From a20264bcafce240dd6188be991e7773998802af1 Mon Sep 17 00:00:00 2001 From: Andras Schmelczer Date: Sat, 21 Mar 2026 12:47:39 +0000 Subject: [PATCH] ai --- CLAUDE.md | 79 +- frontend/deterministic-tests/src/consts.ts | 2 +- .../deterministic-tests/src/test-runner.ts | 1 - frontend/eslint.config.mjs | 3 +- frontend/history-ui/index.html | 13 + frontend/history-ui/package.json | 16 + frontend/history-ui/src/App.svelte | 71 + frontend/history-ui/src/app.css | 101 + .../src/components/ActivityFeed.svelte | 346 ++++ .../src/components/ConfirmDialog.svelte | 167 ++ .../src/components/Dashboard.svelte | 507 +++++ .../history-ui/src/components/DiffView.svelte | 288 +++ .../src/components/DocumentDetail.svelte | 712 +++++++ .../history-ui/src/components/FileTree.svelte | 124 ++ .../history-ui/src/components/Header.svelte | 126 ++ .../history-ui/src/components/Login.svelte | 194 ++ .../src/components/TimeSlider.svelte | 191 ++ .../src/components/ToastContainer.svelte | 80 + frontend/history-ui/src/lib/api.ts | 109 + frontend/history-ui/src/lib/stores.svelte.ts | 291 +++ frontend/history-ui/src/lib/types.ts | 54 + frontend/history-ui/src/main.ts | 7 + frontend/history-ui/svelte.config.js | 5 + frontend/history-ui/tsconfig.json | 16 + frontend/history-ui/vite.config.ts | 15 + frontend/local-client-cli/README.md | 32 +- frontend/local-client-cli/src/args.test.ts | 162 +- frontend/local-client-cli/src/args.ts | 63 +- frontend/local-client-cli/src/cli.ts | 102 +- frontend/local-client-cli/src/file-watcher.ts | 36 +- .../local-client-cli/src/node-filesystem.ts | 42 +- .../local-client-cli/src/path-utils.test.ts | 65 + frontend/local-client-cli/src/path-utils.ts | 74 + frontend/obsidian-plugin/package.json | 2 +- .../views/cursors/remote-cursors-plugin.ts | 3 +- .../src/views/settings/settings-tab.ts | 16 - frontend/package-lock.json | 1769 ++++++++++++++++- frontend/package.json | 3 +- frontend/sync-client/ARCHITECTURE.md | 197 ++ frontend/sync-client/package.json | 12 +- frontend/sync-client/src/consts.ts | 2 + .../file-operations/file-operations.test.ts | 28 +- .../src/file-operations/file-operations.ts | 226 ++- .../sync-client/src/persistence/database.ts | 385 +--- .../sync-client/src/persistence/settings.ts | 2 - frontend/sync-client/src/persistence/vfs.ts | 820 ++++++++ .../src/services/fetch-controller.ts | 26 +- .../sync-client/src/services/sync-service.ts | 97 +- .../services/types/DeleteDocumentVersion.ts | 2 +- .../services/types/WebSocketClientMessage.ts | 2 +- .../src/services/websocket-manager.ts | 92 +- frontend/sync-client/src/sync-client.ts | 104 +- .../src/sync-operations/cursor-tracker.ts | 151 +- .../src/sync-operations/sync-actions.ts | 1182 +++++++++++ .../src/sync-operations/sync-event-queue.ts | 268 +++ .../src/sync-operations/sync-events.ts | 301 +++ .../sync-client/src/sync-operations/syncer.ts | 949 +++++---- .../sync-operations/unrestricted-syncer.ts | 826 -------- frontend/sync-client/src/utils/decode-text.ts | 46 + .../src/utils/find-matching-file.ts | 14 - frontend/sync-client/src/utils/hash.ts | 38 +- frontend/sync-client/src/utils/is-binary.ts | 23 +- .../src/utils/validate-relative-path.test.ts | 81 + .../src/utils/validate-relative-path.ts | 46 + frontend/test-client/src/agent/mock-agent.ts | 214 +- frontend/test-client/src/cli.ts | 186 +- .../src/utils/test-error-tracker.ts | 34 + scripts/e2e.sh | 59 +- scripts/utils/wait-for-server.sh | 4 +- sync-server/Cargo.lock | 433 +++- sync-server/Cargo.toml | 9 +- sync-server/build.rs | 13 +- sync-server/config-e2e.yml | 6 +- sync-server/rust-toolchain.toml | 2 +- sync-server/src/app_state.rs | 22 +- sync-server/src/app_state/cursors.rs | 97 +- sync-server/src/app_state/database.rs | 558 ++++-- ...00_add_unique_index_on_idempotency_key.sql | 2 + ...0260319000000_add_index_on_document_id.sql | 2 + sync-server/src/app_state/database/models.rs | 8 +- .../src/app_state/websocket/broadcasts.rs | 61 +- sync-server/src/app_state/websocket/models.rs | 5 +- sync-server/src/app_state/websocket/utils.rs | 10 +- sync-server/src/config.rs | 29 +- sync-server/src/config/server_config.rs | 89 +- sync-server/src/config/user_config.rs | 30 +- sync-server/src/consts.rs | 9 + sync-server/src/errors.rs | 16 +- sync-server/src/main.rs | 10 +- sync-server/src/server.rs | 146 +- sync-server/src/server/auth.rs | 10 +- sync-server/src/server/create_document.rs | 148 +- sync-server/src/server/delete_document.rs | 27 +- sync-server/src/server/device_id_header.rs | 29 +- .../src/server/fetch_document_version.rs | 4 +- .../server/fetch_document_version_content.rs | 4 +- .../src/server/fetch_document_versions.rs | 42 + sync-server/src/server/fetch_vault_history.rs | 70 + sync-server/src/server/index.rs | 149 +- sync-server/src/server/rate_limit.rs | 72 + sync-server/src/server/requests.rs | 10 +- sync-server/src/server/resolve_keys.rs | 19 +- sync-server/src/server/responses.rs | 9 + .../src/server/restore_document_version.rs | 148 ++ sync-server/src/server/update_document.rs | 250 ++- sync-server/src/server/websocket.rs | 245 ++- sync-server/src/utils.rs | 1 + sync-server/src/utils/decode_text.rs | 41 + sync-server/src/utils/dedup_paths.rs | 53 +- .../src/utils/find_first_available_path.rs | 21 +- sync-server/src/utils/is_binary.rs | 25 +- sync-server/src/utils/rotating_file_writer.rs | 23 +- 112 files changed, 12567 insertions(+), 2694 deletions(-) create mode 100644 frontend/history-ui/index.html create mode 100644 frontend/history-ui/package.json create mode 100644 frontend/history-ui/src/App.svelte create mode 100644 frontend/history-ui/src/app.css create mode 100644 frontend/history-ui/src/components/ActivityFeed.svelte create mode 100644 frontend/history-ui/src/components/ConfirmDialog.svelte create mode 100644 frontend/history-ui/src/components/Dashboard.svelte create mode 100644 frontend/history-ui/src/components/DiffView.svelte create mode 100644 frontend/history-ui/src/components/DocumentDetail.svelte create mode 100644 frontend/history-ui/src/components/FileTree.svelte create mode 100644 frontend/history-ui/src/components/Header.svelte create mode 100644 frontend/history-ui/src/components/Login.svelte create mode 100644 frontend/history-ui/src/components/TimeSlider.svelte create mode 100644 frontend/history-ui/src/components/ToastContainer.svelte create mode 100644 frontend/history-ui/src/lib/api.ts create mode 100644 frontend/history-ui/src/lib/stores.svelte.ts create mode 100644 frontend/history-ui/src/lib/types.ts create mode 100644 frontend/history-ui/src/main.ts create mode 100644 frontend/history-ui/svelte.config.js create mode 100644 frontend/history-ui/tsconfig.json create mode 100644 frontend/history-ui/vite.config.ts create mode 100644 frontend/local-client-cli/src/path-utils.test.ts create mode 100644 frontend/local-client-cli/src/path-utils.ts create mode 100644 frontend/sync-client/ARCHITECTURE.md create mode 100644 frontend/sync-client/src/persistence/vfs.ts create mode 100644 frontend/sync-client/src/sync-operations/sync-actions.ts create mode 100644 frontend/sync-client/src/sync-operations/sync-event-queue.ts create mode 100644 frontend/sync-client/src/sync-operations/sync-events.ts delete mode 100644 frontend/sync-client/src/sync-operations/unrestricted-syncer.ts create mode 100644 frontend/sync-client/src/utils/decode-text.ts delete mode 100644 frontend/sync-client/src/utils/find-matching-file.ts create mode 100644 frontend/sync-client/src/utils/validate-relative-path.test.ts create mode 100644 frontend/sync-client/src/utils/validate-relative-path.ts create mode 100644 frontend/test-client/src/utils/test-error-tracker.ts create mode 100644 sync-server/src/app_state/database/migrations/20260315000000_add_unique_index_on_idempotency_key.sql create mode 100644 sync-server/src/app_state/database/migrations/20260319000000_add_index_on_document_id.sql create mode 100644 sync-server/src/server/fetch_document_versions.rs create mode 100644 sync-server/src/server/fetch_vault_history.rs create mode 100644 sync-server/src/server/rate_limit.rs create mode 100644 sync-server/src/server/restore_document_version.rs create mode 100644 sync-server/src/utils/decode_text.rs diff --git a/CLAUDE.md b/CLAUDE.md index 9cd20feb..deb2ae63 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -15,11 +15,13 @@ VaultLink is a self-hosted Obsidian plugin for real-time collaborative file sync - **frontend/obsidian-plugin/**: Obsidian plugin that integrates the sync client with Obsidian's API - **frontend/test-client/**: CLI testing tool for simulating multiple concurrent users - **frontend/local-client-cli/**: Standalone CLI for VaultLink sync client +- **frontend/history-ui/**: Svelte 5 web UI for browsing vault history, viewing diffs, and restoring versions ### Key Technologies - **Backend**: Rust with Axum framework, SQLite with SQLx, WebSockets for real-time sync - **Frontend**: TypeScript, Webpack for bundling, Node.js native test runner +- **History UI**: Svelte 5 with runes, Vite for bundling, embedded in server binary via `rust-embed` - **Sync Algorithm**: Uses reconcile-text library for operational transformation ### Architectural Patterns @@ -47,6 +49,32 @@ The sync-client builds two separate bundles: - `sync-client.web.js`: Browser-compatible UMD bundle (excludes `ws` package) - `sync-client.node.js`: Node.js CommonJS bundle with WebSocket support +**History UI Architecture:** + +The history UI (`frontend/history-ui/`) is a standalone Svelte 5 SPA that provides read-only vault history browsing. It communicates with the server via the same REST API used by sync clients, plus three additional endpoints: + +- `GET /vaults/:vault_id/documents/:document_id/versions` — all versions of a document (without content) +- `GET /vaults/:vault_id/history?limit=&before_update_id=` — paginated vault-wide version history (cursor-based) +- `POST /vaults/:vault_id/documents/:document_id/restore` — restore a document to a historical version (creates a new version with old content) + +Server-side implementation: +- Database methods: `get_document_versions()` and `get_vault_history()` in `database.rs`, plus a `VaultHistoryRow` helper struct for `sqlx::query_as!` +- Handlers: `fetch_document_versions.rs`, `fetch_vault_history.rs`, `restore_document_version.rs` +- Response type: `VaultHistoryResponse { versions, hasMore }` in `responses.rs` +- SPA serving: `rust-embed` embeds `frontend/history-ui/dist/` into the binary; `index.rs` serves the SPA at `/` and assets at `/assets/*` + +Client-side component hierarchy: +- `App.svelte` — session restore, routing +- `Login.svelte` — vault name + token auth via `/ping` +- `Dashboard.svelte` — main layout: file tree sidebar, activity feed, time-travel slider +- `DocumentDetail.svelte` — version timeline, content preview, diff view, restore +- `DiffView.svelte` — unified diff with LCS algorithm +- `FileTree.svelte` — recursive tree built from flat `relativePath` values +- `ActivityFeed.svelte` — git-log-style feed with action pills (created/updated/renamed/deleted/restored) +- `TimeSlider.svelte` — scrubs through `vaultUpdateId` range, reconstructs vault state at any point + +State is managed with Svelte 5 runes (`$state`, `$derived`, `$effect`) in `lib/stores.svelte.ts`. Auth is stored in `sessionStorage`. The API client (`lib/api.ts`) sets `Authorization: Bearer` and `device-id: history-ui` headers on all requests. + ## Development Commands ### Initial Setup @@ -101,6 +129,23 @@ npm run test -w sync-client # Run tests for specific workspace npm run lint # Lint and format TypeScript code with ESLint + Prettier ``` +### History UI Development + +```bash +cd frontend +npm run dev -w history-ui # Start Vite dev server (localhost:5173, proxies API to localhost:3000) +npm run build -w history-ui # Build for production (output: frontend/history-ui/dist/) +``` + +The history UI is a Svelte 5 SPA embedded in the server binary via `rust-embed`. The build flow is: + +1. `npm run build -w history-ui` produces `frontend/history-ui/dist/` +2. The Rust server embeds these files at compile time (`sync-server/src/server/index.rs`) +3. The server serves `index.html` at `GET /` and static assets at `GET /assets/*` +4. If the dist directory doesn't exist at Rust compile time, `build.rs` creates a placeholder + +During development, run the Vite dev server separately and use its proxy to forward API calls to the running sync server. + ### Database Operations ```bash @@ -129,12 +174,13 @@ sqlx migrate run --source src/app_state/database/migrations --database-url sqlit ### Workspace Configuration -The frontend uses npm workspaces with four packages: +The frontend uses npm workspaces with five packages: - `sync-client`: Core synchronization logic (builds dual bundles for web and Node.js) - `obsidian-plugin`: Obsidian-specific integration - `test-client`: Testing utilities for E2E tests - `local-client-cli`: Standalone CLI for VaultLink sync client +- `history-ui`: Svelte 5 SPA for vault history browsing (built with Vite, embedded in server binary) ### Type Generation and API Updates @@ -201,6 +247,13 @@ scripts/clean-up.sh # Clean up after tests - Configuration in `frontend/package.json` - Run `npm run lint` to format and fix issues +### Svelte (History UI) + +- Uses Svelte 5 runes syntax (`$state`, `$derived`, `$effect`, `$props`) +- Vite as bundler with `@sveltejs/vite-plugin-svelte` +- Excluded from the main ESLint config (Svelte files need different linting); `history-ui/**` is in the eslint ignores list +- CSS is component-scoped via Svelte's ` diff --git a/frontend/history-ui/src/app.css b/frontend/history-ui/src/app.css new file mode 100644 index 00000000..ff3e6a9c --- /dev/null +++ b/frontend/history-ui/src/app.css @@ -0,0 +1,101 @@ +:root { + --bg: #0d1117; + --bg-secondary: #161b22; + --bg-tertiary: #21262d; + --bg-hover: #30363d; + --border: #30363d; + --border-light: #21262d; + --text: #e6edf3; + --text-muted: #8b949e; + --text-subtle: #6e7681; + --accent: #58a6ff; + --accent-hover: #79c0ff; + --green: #3fb950; + --green-bg: rgba(63, 185, 80, 0.15); + --red: #f85149; + --red-bg: rgba(248, 81, 73, 0.15); + --orange: #d29922; + --orange-bg: rgba(210, 153, 34, 0.15); + --purple: #bc8cff; + --purple-bg: rgba(188, 140, 255, 0.15); + --blue: #58a6ff; + --blue-bg: rgba(88, 166, 255, 0.15); + --mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace; + --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Noto Sans, Helvetica, Arial, sans-serif; + --radius: 6px; + --radius-sm: 4px; + --shadow: 0 1px 3px rgba(0, 0, 0, 0.3); +} + +* { + margin: 0; + padding: 0; + box-sizing: border-box; +} + +html, body, #app { + height: 100%; + width: 100%; + overflow: hidden; +} + +body { + font-family: var(--sans); + font-size: 14px; + line-height: 1.5; + color: var(--text); + background: var(--bg); + -webkit-font-smoothing: antialiased; +} + +button { + font-family: inherit; + font-size: inherit; + cursor: pointer; + border: none; + background: none; + color: inherit; +} + +input { + font-family: inherit; + font-size: inherit; + color: inherit; + background: var(--bg); + border: 1px solid var(--border); + border-radius: var(--radius); + padding: 8px 12px; + outline: none; + transition: border-color 0.15s; +} + +input:focus { + border-color: var(--accent); +} + +a { + color: var(--accent); + text-decoration: none; +} + +a:hover { + text-decoration: underline; +} + +::-webkit-scrollbar { + width: 8px; + height: 8px; +} + +::-webkit-scrollbar-track { + background: transparent; +} + +::-webkit-scrollbar-thumb { + background: var(--bg-tertiary); + border-radius: 4px; +} + +::-webkit-scrollbar-thumb:hover { + background: var(--bg-hover); +} diff --git a/frontend/history-ui/src/components/ActivityFeed.svelte b/frontend/history-ui/src/components/ActivityFeed.svelte new file mode 100644 index 00000000..c1c82c29 --- /dev/null +++ b/frontend/history-ui/src/components/ActivityFeed.svelte @@ -0,0 +1,346 @@ + + +
+ {#if loading && versions.length === 0} +
Loading activity...
+ {:else if versions.length === 0} +
+ No activity yet. Documents will appear here as sync clients + make changes. +
+ {:else} + {#each grouped as group} +
+
{group.date}
+
+ {#each group.items as event} +
+ + +
+ {/each} +
+
+ {/each} + + {#if hasMore} +
+ +
+ {/if} + {/if} +
+ + diff --git a/frontend/history-ui/src/components/ConfirmDialog.svelte b/frontend/history-ui/src/components/ConfirmDialog.svelte new file mode 100644 index 00000000..e91f790a --- /dev/null +++ b/frontend/history-ui/src/components/ConfirmDialog.svelte @@ -0,0 +1,167 @@ + + + + + + + + diff --git a/frontend/history-ui/src/components/Dashboard.svelte b/frontend/history-ui/src/components/Dashboard.svelte new file mode 100644 index 00000000..d7fab282 --- /dev/null +++ b/frontend/history-ui/src/components/Dashboard.svelte @@ -0,0 +1,507 @@ + + +
+
+ +
+ + + + +
+ {#if maxUpdateId > 0} +
+ { + timeSliderValue = v; + }} + /> +
+ {/if} + + {#if selectedDocumentId} + nav.goHome()} + onRestore={handleRefresh} + /> + {:else} +
+ + +
+ + {#if activeTab === "activity"} + { + timeSliderValue = id >= maxUpdateId ? null : id; + }} + /> + {:else} +
+ {#each latestDocuments + .filter((d) => showDeleted || !d.isDeleted) + .sort((a, b) => b.vaultUpdateId - a.vaultUpdateId) as doc} + + {/each} +
+ {/if} + {/if} +
+
+
+ + diff --git a/frontend/history-ui/src/components/DiffView.svelte b/frontend/history-ui/src/components/DiffView.svelte new file mode 100644 index 00000000..be97952c --- /dev/null +++ b/frontend/history-ui/src/components/DiffView.svelte @@ -0,0 +1,288 @@ + + +
+
+ {oldLabel} + → + {newLabel} + + +{stats.added} + -{stats.removed} + +
+
+ {#each diffLines as line} +
+ + {line.oldLineNo ?? ""} + + + {line.newLineNo ?? ""} + + + {#if line.type === "add"}+{:else if line.type === "remove"}-{:else} {/if} + + {line.content} +
+ {/each} +
+
+ + diff --git a/frontend/history-ui/src/components/DocumentDetail.svelte b/frontend/history-ui/src/components/DocumentDetail.svelte new file mode 100644 index 00000000..556a5e8d --- /dev/null +++ b/frontend/history-ui/src/components/DocumentDetail.svelte @@ -0,0 +1,712 @@ + + +
+ +
+ +
+
+ + {currentPath} + + {#if isDeleted} + Deleted + {:else} + Active + {/if} +
+
+ + {documentId.substring(0, 8)}... + + {#if latest} + · + {versions.length} version{versions.length !== 1 ? "s" : ""} + · + Last by {latest.userId} + {/if} +
+
+
+ + {#if loading} +
Loading versions...
+ {:else} + +
+
+ {#if selectedVersion} +
+ + +
+ + Viewing v#{selectedVersion.vaultUpdateId} + · + {relativeTime(selectedVersion.updatedDate)} + +
+ +
+ {#if loadingContent} +
Loading content...
+ {:else if activeTab === "diff" && diffOldContent !== null && diffNewContent !== null} + + {:else if activeTab === "preview"} + {#if isTextFile(selectedVersion.relativePath) || fileExtension(selectedVersion.relativePath) === ""} + 
{loadedContent ?? ""}
+ {:else if isImageFile(selectedVersion.relativePath) && loadedContentBytes} +
+ {selectedVersion.relativePath} +
+ {:else} +
+
📦
+
Binary file
+
+ {formatBytes(selectedVersion.contentSize)} +
+
+ {/if} + {/if} +
+ {/if} +
+ + +
+
Version History
+
+ {#each [...versionEvents].reverse() as event, i} + {@const v = event.version} + {@const isSelected = selectedVersion?.vaultUpdateId === v.vaultUpdateId} +
+ + {#if event.previousPath} +
+ {event.previousPath} → {v.relativePath} +
+ {/if} +
+ {#if i < versionEvents.length - 1} + + {/if} + {#if v !== latest} + + {/if} +
+
+ {/each} +
+
+
+ {/if} +
+ +{#if showRestoreDialog && restoreTarget} + { + showRestoreDialog = false; + restoreTarget = null; + }} + /> +{/if} + + diff --git a/frontend/history-ui/src/components/FileTree.svelte b/frontend/history-ui/src/components/FileTree.svelte new file mode 100644 index 00000000..ec72cbf9 --- /dev/null +++ b/frontend/history-ui/src/components/FileTree.svelte @@ -0,0 +1,124 @@ + + +{#if node.isFolder && depth === 0} + {#each node.children as child} + + {/each} +{:else if node.isFolder} +
+ + {#if isExpanded(node.path)} + {#each node.children as child} + + {/each} + {/if} +
+{:else} + +{/if} + + diff --git a/frontend/history-ui/src/components/Header.svelte b/frontend/history-ui/src/components/Header.svelte new file mode 100644 index 00000000..882781b5 --- /dev/null +++ b/frontend/history-ui/src/components/Header.svelte @@ -0,0 +1,126 @@ + + +
+
+ + + + + + VaultLink + / + {vaultId} +
+ +
+ v{serverVersion} + + +
+
+ + diff --git a/frontend/history-ui/src/components/Login.svelte b/frontend/history-ui/src/components/Login.svelte new file mode 100644 index 00000000..96ec2fad --- /dev/null +++ b/frontend/history-ui/src/components/Login.svelte @@ -0,0 +1,194 @@ + + + + + diff --git a/frontend/history-ui/src/components/TimeSlider.svelte b/frontend/history-ui/src/components/TimeSlider.svelte new file mode 100644 index 00000000..79e9e5de --- /dev/null +++ b/frontend/history-ui/src/components/TimeSlider.svelte @@ -0,0 +1,191 @@ + + +
+
+ + + + + Time Travel +
+ +
+ +
+ +
+ {#if isNow} + Now + {:else if currentVersion} + + #{value} + · + {relativeTime(currentVersion.updatedDate)} + + {:else} + #{value} + {/if} +
+ + {#if !isNow} + + {/if} +
+ + diff --git a/frontend/history-ui/src/components/ToastContainer.svelte b/frontend/history-ui/src/components/ToastContainer.svelte new file mode 100644 index 00000000..39ab1705 --- /dev/null +++ b/frontend/history-ui/src/components/ToastContainer.svelte @@ -0,0 +1,80 @@ + + +{#if toasts.items.length > 0} +
+ {#each toasts.items as toast (toast.id)} +
+ {toast.message} + +
+ {/each} +
+{/if} + + diff --git a/frontend/history-ui/src/lib/api.ts b/frontend/history-ui/src/lib/api.ts new file mode 100644 index 00000000..db57831f --- /dev/null +++ b/frontend/history-ui/src/lib/api.ts @@ -0,0 +1,109 @@ +import type { + DocumentVersion, + DocumentVersionWithoutContent, + FetchLatestDocumentsResponse, + PingResponse, + VaultHistoryResponse +} from "./types"; + +export class ApiClient { + constructor( + private vaultId: string, + private token: string + ) {} + + private get baseUrl(): string { + return `/vaults/${encodeURIComponent(this.vaultId)}`; + } + + private headers(): Record { + return { + Authorization: `Bearer ${this.token}`, + "device-id": "history-ui" + }; + } + + private async fetchJson( + path: string, + init?: RequestInit + ): Promise { + const response = await fetch(path, { + ...init, + headers: { ...this.headers(), ...init?.headers } + }); + if (!response.ok) { + const body = await response.text(); + throw new Error(`HTTP ${response.status}: ${body}`); + } + return response.json() as Promise; + } + + async ping(): Promise { + return this.fetchJson(`${this.baseUrl}/ping`); + } + + async fetchLatestDocuments(): Promise { + return this.fetchJson(`${this.baseUrl}/documents`); + } + + async fetchDocumentVersions( + documentId: string + ): Promise { + return this.fetchJson( + `${this.baseUrl}/documents/${documentId}/versions` + ); + } + + async fetchDocumentVersion( + documentId: string, + vaultUpdateId: number + ): Promise { + return this.fetchJson( + `${this.baseUrl}/documents/${documentId}/versions/${vaultUpdateId}` + ); + } + + async fetchDocumentVersionContent( + documentId: string, + vaultUpdateId: number + ): Promise { + const response = await fetch( + `${this.baseUrl}/documents/${documentId}/versions/${vaultUpdateId}/content`, + { headers: this.headers() } + ); + if (!response.ok) { + throw new Error(`HTTP ${response.status}`); + } + return response.arrayBuffer(); + } + + async fetchVaultHistory( + limit?: number, + beforeUpdateId?: number + ): Promise { + const params = new URLSearchParams(); + if (limit !== undefined) params.set("limit", String(limit)); + if (beforeUpdateId !== undefined) + params.set("before_update_id", String(beforeUpdateId)); + const qs = params.toString(); + return this.fetchJson( + `${this.baseUrl}/history${qs ? `?${qs}` : ""}` + ); + } + + async restoreVersion( + documentId: string, + vaultUpdateId: number + ): Promise { + return this.fetchJson( + `${this.baseUrl}/documents/${documentId}/restore`, + { + method: "POST", + headers: { + "Content-Type": "application/json" + }, + body: JSON.stringify({ vaultUpdateId }) + } + ); + } +} diff --git a/frontend/history-ui/src/lib/stores.svelte.ts b/frontend/history-ui/src/lib/stores.svelte.ts new file mode 100644 index 00000000..2046bc9d --- /dev/null +++ b/frontend/history-ui/src/lib/stores.svelte.ts @@ -0,0 +1,291 @@ +import { ApiClient } from "./api"; +import type { + DocumentVersionWithoutContent, + VersionEvent, + ActionType, + TreeNode +} from "./types"; + +class AuthStore { + vaultId = $state(""); + token = $state(""); + isAuthenticated = $state(false); + serverVersion = $state(""); + api = $state(null); + + login(vaultId: string, token: string, serverVersion: string) { + this.vaultId = vaultId; + this.token = token; + this.serverVersion = serverVersion; + this.isAuthenticated = true; + this.api = new ApiClient(vaultId, token); + sessionStorage.setItem( + "vaultlink_auth", + JSON.stringify({ vaultId, token }) + ); + } + + logout() { + this.vaultId = ""; + this.token = ""; + this.isAuthenticated = false; + this.serverVersion = ""; + this.api = null; + sessionStorage.removeItem("vaultlink_auth"); + } + + tryRestore(): { vaultId: string; token: string } | null { + const stored = sessionStorage.getItem("vaultlink_auth"); + if (!stored) return null; + try { + return JSON.parse(stored) as { + vaultId: string; + token: string; + }; + } catch { + return null; + } + } +} + +export const auth = new AuthStore(); + +// Navigation +export type View = + | { kind: "dashboard" } + | { kind: "document"; documentId: string }; + +class NavStore { + current = $state({ kind: "dashboard" }); + + goto(view: View) { + this.current = view; + } + + goHome() { + this.current = { kind: "dashboard" }; + } +} + +export const nav = new NavStore(); + +// Toasts +export interface Toast { + id: number; + message: string; + type: "success" | "error" | "info"; +} + +class ToastStore { + items = $state([]); + private nextId = 0; + + add(message: string, type: Toast["type"] = "info") { + const id = this.nextId++; + this.items.push({ id, message, type }); + setTimeout(() => this.dismiss(id), 5000); + } + + dismiss(id: number) { + this.items = this.items.filter((t) => t.id !== id); + } +} + +export const toasts = new ToastStore(); + +// Utilities + +export function inferAction( + version: DocumentVersionWithoutContent, + previousVersion?: DocumentVersionWithoutContent +): ActionType { + if (version.isDeleted) return "deleted"; + if (!previousVersion) return "created"; + if ( + previousVersion.isDeleted && + !version.isDeleted + ) + return "restored"; + if (previousVersion.relativePath !== version.relativePath) + return "renamed"; + return "updated"; +} + +export function enrichVersions( + versions: DocumentVersionWithoutContent[] +): VersionEvent[] { + // versions should be sorted by vaultUpdateId ascending + const sorted = [...versions].sort( + (a, b) => a.vaultUpdateId - b.vaultUpdateId + ); + const byDoc = new Map(); + for (const v of sorted) { + let arr = byDoc.get(v.documentId); + if (!arr) { + arr = []; + byDoc.set(v.documentId, arr); + } + arr.push(v); + } + + return sorted.map((v) => { + const docVersions = byDoc.get(v.documentId)!; + const idx = docVersions.indexOf(v); + const prev = idx > 0 ? docVersions[idx - 1] : undefined; + const action = inferAction(v, prev); + return { + ...v, + action, + previousPath: + action === "renamed" ? prev?.relativePath : undefined + }; + }); +} + +export function buildTree( + documents: DocumentVersionWithoutContent[], + showDeleted: boolean +): TreeNode { + const root: TreeNode = { + name: "", + path: "", + isFolder: true, + children: [] + }; + + const filtered = showDeleted + ? documents + : documents.filter((d) => !d.isDeleted); + + for (const doc of filtered) { + const parts = doc.relativePath.split("/"); + let current = root; + + for (let i = 0; i < parts.length; i++) { + const part = parts[i]; + const isFile = i === parts.length - 1; + const path = parts.slice(0, i + 1).join("/"); + + if (isFile) { + current.children.push({ + name: part, + path, + isFolder: false, + children: [], + document: doc, + isDeleted: doc.isDeleted + }); + } else { + let folder = current.children.find( + (c) => c.isFolder && c.name === part + ); + if (!folder) { + folder = { + name: part, + path, + isFolder: true, + children: [] + }; + current.children.push(folder); + } + current = folder; + } + } + } + + sortTree(root); + return root; +} + +function sortTree(node: TreeNode) { + node.children.sort((a, b) => { + if (a.isFolder !== b.isFolder) return a.isFolder ? -1 : 1; + return a.name.localeCompare(b.name); + }); + for (const child of node.children) { + if (child.isFolder) sortTree(child); + } +} + +export function relativeTime(dateStr: string): string { + const date = new Date(dateStr); + const now = Date.now(); + const diff = now - date.getTime(); + const seconds = Math.floor(diff / 1000); + const minutes = Math.floor(seconds / 60); + const hours = Math.floor(minutes / 60); + const days = Math.floor(hours / 24); + + if (seconds < 60) return "just now"; + if (minutes < 60) return `${minutes}m ago`; + if (hours < 24) return `${hours}h ago`; + if (days < 7) return `${days}d ago`; + return date.toLocaleDateString("en-US", { + month: "short", + day: "numeric", + year: days > 365 ? "numeric" : undefined + }); +} + +export function absoluteTime(dateStr: string): string { + return new Date(dateStr).toLocaleString(); +} + +export function formatBytes(bytes: number): string { + if (bytes === 0) return "0 B"; + const k = 1024; + const sizes = ["B", "KB", "MB", "GB"]; + const i = Math.floor(Math.log(bytes) / Math.log(k)); + return `${parseFloat((bytes / Math.pow(k, i)).toFixed(1))} ${sizes[i]}`; +} + +export function fileExtension(path: string): string { + const dot = path.lastIndexOf("."); + return dot > -1 ? path.substring(dot + 1).toLowerCase() : ""; +} + +export function isTextFile(path: string): boolean { + const textExts = new Set([ + "md", + "txt", + "json", + "yaml", + "yml", + "toml", + "xml", + "html", + "css", + "js", + "ts", + "svelte", + "rs", + "py", + "sh", + "bash", + "zsh", + "csv", + "svg", + "log", + "conf", + "cfg", + "ini", + "env", + "gitignore", + "editorconfig" + ]); + return textExts.has(fileExtension(path)); +} + +export function isImageFile(path: string): boolean { + const imageExts = new Set([ + "png", + "jpg", + "jpeg", + "gif", + "webp", + "svg", + "ico", + "bmp" + ]); + return imageExts.has(fileExtension(path)); +} diff --git a/frontend/history-ui/src/lib/types.ts b/frontend/history-ui/src/lib/types.ts new file mode 100644 index 00000000..ea7a361f --- /dev/null +++ b/frontend/history-ui/src/lib/types.ts @@ -0,0 +1,54 @@ +export interface DocumentVersionWithoutContent { + vaultUpdateId: number; + documentId: string; + relativePath: string; + updatedDate: string; + isDeleted: boolean; + userId: string; + deviceId: string; + contentSize: number; +} + +export interface DocumentVersion { + vaultUpdateId: number; + documentId: string; + relativePath: string; + updatedDate: string; + contentBase64: string; + isDeleted: boolean; + userId: string; + deviceId: string; +} + +export interface FetchLatestDocumentsResponse { + latestDocuments: DocumentVersionWithoutContent[]; + lastUpdateId: number; +} + +export interface VaultHistoryResponse { + versions: DocumentVersionWithoutContent[]; + hasMore: boolean; +} + +export interface PingResponse { + serverVersion: string; + isAuthenticated: boolean; + mergeableFileExtensions: string[]; + supportedApiVersion: number; +} + +export type ActionType = "created" | "updated" | "renamed" | "deleted" | "restored"; + +export interface VersionEvent extends DocumentVersionWithoutContent { + action: ActionType; + previousPath?: string; +} + +export interface TreeNode { + name: string; + path: string; + isFolder: boolean; + children: TreeNode[]; + document?: DocumentVersionWithoutContent; + isDeleted?: boolean; +} diff --git a/frontend/history-ui/src/main.ts b/frontend/history-ui/src/main.ts new file mode 100644 index 00000000..c72cabd0 --- /dev/null +++ b/frontend/history-ui/src/main.ts @@ -0,0 +1,7 @@ +import { mount } from "svelte"; +import App from "./App.svelte"; +import "./app.css"; + +const app = mount(App, { target: document.getElementById("app")! }); + +export default app; diff --git a/frontend/history-ui/svelte.config.js b/frontend/history-ui/svelte.config.js new file mode 100644 index 00000000..76a68bfc --- /dev/null +++ b/frontend/history-ui/svelte.config.js @@ -0,0 +1,5 @@ +import { vitePreprocess } from "@sveltejs/vite-plugin-svelte"; + +export default { + preprocess: vitePreprocess() +}; diff --git a/frontend/history-ui/tsconfig.json b/frontend/history-ui/tsconfig.json new file mode 100644 index 00000000..216dc140 --- /dev/null +++ b/frontend/history-ui/tsconfig.json @@ -0,0 +1,16 @@ +{ + "compilerOptions": { + "target": "ESNext", + "module": "ESNext", + "moduleResolution": "bundler", + "strict": true, + "esModuleInterop": true, + "skipLibCheck": true, + "forceConsistentCasingInFileNames": true, + "resolveJsonModule": true, + "isolatedModules": true, + "verbatimModuleSyntax": true, + "types": ["svelte"] + }, + "include": ["src/**/*", "src/**/*.svelte"] +} diff --git a/frontend/history-ui/vite.config.ts b/frontend/history-ui/vite.config.ts new file mode 100644 index 00000000..4c1d6004 --- /dev/null +++ b/frontend/history-ui/vite.config.ts @@ -0,0 +1,15 @@ +import { defineConfig } from "vite"; +import { svelte } from "@sveltejs/vite-plugin-svelte"; + +export default defineConfig({ + plugins: [svelte()], + build: { + outDir: "dist", + emptyOutDir: true + }, + server: { + proxy: { + "/vaults": "http://localhost:3011" + } + } +}); diff --git a/frontend/local-client-cli/README.md b/frontend/local-client-cli/README.md index 731160e6..114b25cb 100644 --- a/frontend/local-client-cli/README.md +++ b/frontend/local-client-cli/README.md @@ -56,15 +56,16 @@ vaultlink \ ### Optional -| Option | Default | Description | -| ------------------------------------ | ------- | -------------------------------------- | -| `--sync-concurrency ` | `1` | Concurrent sync operations | -| `--max-file-size-mb ` | `10` | Maximum file size in MB | -| `--ignore-pattern ` | - | Glob pattern to ignore (repeatable) | -| `--websocket-retry-interval-ms ` | `3500` | WebSocket reconnection interval | -| `--log-level ` | `INFO` | Log level: DEBUG, INFO, WARNING, ERROR | -| `-h, --help` | - | Show help | -| `-V, --version` | - | Show version | +| Option | Default | Description | +| ------------------------------------ | ------- | ---------------------------------------------------- | +| `--max-file-size-mb ` | `10` | Maximum file size in MB | +| `--ignore-pattern ` | - | Glob pattern to ignore (repeatable) | +| `--websocket-retry-interval-ms ` | `3500` | WebSocket reconnection interval | +| `--log-level ` | `INFO` | Log level: DEBUG, INFO, WARNING, ERROR | +| `--line-endings ` | `auto` | Line ending style: auto, lf, crlf | +| `-q, --quiet` | - | Suppress startup banner for non-interactive use | +| `-h, --help` | - | Show help | +| `-V, --version` | - | Show version | ### Auto-Ignored Patterns @@ -83,16 +84,23 @@ With ignore patterns: ```bash vaultlink -l ./vault -r wss://sync.example.com -t token123 -v default \ - --ignore-pattern "*.tmp" \ + --ignore-pattern "**/*.tmp" \ --ignore-pattern ".DS_Store" \ --ignore-pattern "node_modules/**" ``` -With debug logging: +With debug logging and quiet startup: ```bash vaultlink -l ./vault -r wss://sync.example.com -t token123 -v default \ - --log-level DEBUG + --log-level DEBUG --quiet +``` + +Force LF line endings (useful for cross-platform vaults): + +```bash +vaultlink -l ./vault -r wss://sync.example.com -t token123 -v default \ + --line-endings lf ``` ## Docker Deployment diff --git a/frontend/local-client-cli/src/args.test.ts b/frontend/local-client-cli/src/args.test.ts index 46760c3b..c075d193 100644 --- a/frontend/local-client-cli/src/args.test.ts +++ b/frontend/local-client-cli/src/args.test.ts @@ -55,13 +55,10 @@ test("parseArgs - parse with optional arguments", () => { "mytoken", "-v", "default", - "--sync-concurrency", - "5", "--max-file-size-mb", "20" ]); - assert.equal(args.syncConcurrency, 5); assert.equal(args.maxFileSizeMB, 20); }); @@ -292,3 +289,162 @@ test("parseArgs - reads log level from environment variable", () => { delete process.env.VAULTLINK_LOG_LEVEL; } }); + +test("parseArgs - quiet defaults to false", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default" + ]); + + assert.equal(args.quiet, false); +}); + +test("parseArgs - parse --quiet flag", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default", + "--quiet" + ]); + + assert.equal(args.quiet, true); +}); + +test("parseArgs - parse -q short flag", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default", + "-q" + ]); + + assert.equal(args.quiet, true); +}); + +test("parseArgs - line-endings defaults to auto", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default" + ]); + + assert.equal(args.lineEndings, "auto"); +}); + +test("parseArgs - parse --line-endings lf", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default", + "--line-endings", + "lf" + ]); + + assert.equal(args.lineEndings, "lf"); +}); + +test("parseArgs - parse --line-endings crlf", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "https://sync.example.com", + "-t", + "mytoken", + "-v", + "default", + "--line-endings", + "crlf" + ]); + + assert.equal(args.lineEndings, "crlf"); +}); + +test("parseArgs - throws on invalid remote URI protocol", () => { + assert.throws(() => { + parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "ftp://sync.example.com", + "-t", + "mytoken", + "-v", + "default" + ]); + }, /Invalid remote URI/); +}); + +test("parseArgs - accepts http:// remote URI", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "http://localhost:3000", + "-t", + "mytoken", + "-v", + "default" + ]); + + assert.equal(args.remoteUri, "http://localhost:3000"); +}); + +test("parseArgs - accepts wss:// remote URI", () => { + const args = parseArgs([ + "node", + "cli.js", + "-l", + "/path/to/vault", + "-r", + "wss://sync.example.com", + "-t", + "mytoken", + "-v", + "default" + ]); + + assert.equal(args.remoteUri, "wss://sync.example.com"); +}); diff --git a/frontend/local-client-cli/src/args.ts b/frontend/local-client-cli/src/args.ts index 44a6dc1f..80ac146b 100644 --- a/frontend/local-client-cli/src/args.ts +++ b/frontend/local-client-cli/src/args.ts @@ -2,20 +2,25 @@ import { Command, Option } from "commander"; import packageJson from "../package.json"; import { LogLevel } from "sync-client"; +export type LineEndingMode = "auto" | "lf" | "crlf"; + export interface CliArgs { remoteUri: string; token: string; vaultName: string; localPath: string; - syncConcurrency?: number; maxFileSizeMB?: number; ignorePatterns?: string[]; webSocketRetryIntervalMs?: number; logLevel: LogLevel; health?: string; enableTelemetry?: boolean; + quiet: boolean; + lineEndings: LineEndingMode; } +const VALID_URI_PREFIXES = ["http://", "https://", "ws://", "wss://"]; + export function parseArgs(argv: string[]): CliArgs { const program = new Command(); @@ -49,14 +54,6 @@ export function parseArgs(argv: string[]): CliArgs { "Vault name" ).env("VAULTLINK_VAULT_NAME") ) - .addOption( - new Option( - "--sync-concurrency ", - "[OPTIONAL] Number of concurrent sync operations" - ) - .argParser(parseInt) - .env("VAULTLINK_SYNC_CONCURRENCY") - ) .addOption( new Option( "--max-file-size-mb ", @@ -99,15 +96,30 @@ export function parseArgs(argv: string[]): CliArgs { "[OPTIONAL] Enable telemetry (disabled by default)" ).env("VAULTLINK_ENABLE_TELEMETRY") ) + .addOption( + new Option( + "-q, --quiet", + "[OPTIONAL] Suppress startup banner for non-interactive use" + ).env("VAULTLINK_QUIET") + ) + .addOption( + new Option( + "--line-endings ", + "[OPTIONAL] Line ending style: auto (platform default), lf, crlf" + ) + .default("auto") + .choices(["auto", "lf", "crlf"]) + .env("VAULTLINK_LINE_ENDINGS") + ) .addHelpText( "after", ` Examples: $ vaultlink -l ./my-vault -r https://sync.example.com -t mytoken -v default $ vaultlink -l ./my-vault -r https://sync.example.com -t mytoken -v default \\ - --ignore-pattern ".git/**" --ignore-pattern "*.tmp" + --ignore-pattern ".git/**" --ignore-pattern "**/*.tmp" $ vaultlink -l ./my-vault -r https://sync.example.com -t mytoken -v default \\ - --log-level DEBUG + --log-level DEBUG --quiet Environment variables: All options can be configured via VAULTLINK_ prefixed environment variables. @@ -123,7 +135,6 @@ Environment variables: const remoteUri = opts.remoteUri as string | undefined; const token = opts.token as string | undefined; const vaultName = opts.vaultName as string | undefined; - const syncConcurrency = opts.syncConcurrency as number | undefined; const maxFileSizeMb = opts.maxFileSizeMb as number | undefined; const ignorePattern = opts.ignorePattern as string[] | undefined; const websocketRetryIntervalMs = opts.websocketRetryIntervalMs as @@ -132,6 +143,8 @@ Environment variables: const logLevelStr = (opts.logLevel as string | undefined) ?? "INFO"; const health = opts.health as string | undefined; const enableTelemetry = opts.enableTelemetry as boolean | undefined; + const quiet = (opts.quiet as boolean | undefined) ?? false; + const lineEndingsStr = (opts.lineEndings as string | undefined) ?? "auto"; /* eslint-enable @typescript-eslint/no-unsafe-type-assertion */ const requireOption = ( @@ -142,9 +155,12 @@ Environment variables: const option = program.options.find( (o) => o.attributeName() === name ); + const envHint = + option?.envVar !== undefined + ? ` (or set ${option.envVar})` + : ""; throw new Error( - `required option '${option?.flags ?? name}' not specified` + - (option?.envVar ? ` (or set ${option.envVar})` : "") + `required option '${option?.flags ?? name}' not specified${envHint}` ); } return value; @@ -155,6 +171,17 @@ Environment variables: const requiredToken = requireOption(token, "token"); const requiredVaultName = requireOption(vaultName, "vaultName"); + // Validate remote URI protocol + if ( + !VALID_URI_PREFIXES.some((prefix) => + requiredRemoteUri.startsWith(prefix) + ) + ) { + throw new Error( + `Invalid remote URI '${requiredRemoteUri}'. Must start with ${VALID_URI_PREFIXES.join(", ")}` + ); + } + // Validate and parse log level const logLevelUpper = logLevelStr.toUpperCase(); const validLogLevels = Object.values(LogLevel); @@ -168,17 +195,21 @@ Environment variables: } const logLevel = logLevelUpper; + // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion + const lineEndings = lineEndingsStr as LineEndingMode; + return { localPath: requiredLocalPath, remoteUri: requiredRemoteUri, token: requiredToken, vaultName: requiredVaultName, - syncConcurrency, maxFileSizeMB: maxFileSizeMb, ignorePatterns: ignorePattern, webSocketRetryIntervalMs: websocketRetryIntervalMs, logLevel, health, - enableTelemetry + enableTelemetry, + quiet, + lineEndings }; } diff --git a/frontend/local-client-cli/src/cli.ts b/frontend/local-client-cli/src/cli.ts index 02f5b4f9..9c963b91 100644 --- a/frontend/local-client-cli/src/cli.ts +++ b/frontend/local-client-cli/src/cli.ts @@ -37,6 +37,20 @@ const LOG_LEVEL_ORDER = { }; const HEALTH_CHECK_INTERVAL_MS = 30 * 1000; +const PROGRESS_LOG_INTERVAL_MS = 2000; + +function resolveLineEndings( + mode: "auto" | "lf" | "crlf" +): string { + switch (mode) { + case "lf": + return "\n"; + case "crlf": + return "\r\n"; + case "auto": + return process.platform === "win32" ? "\r\n" : "\n"; + } +} async function main(): Promise { const args = parseArgs(process.argv); @@ -64,21 +78,28 @@ async function main(): Promise { process.exit(1); } - console.log( - styleText("VaultLink Local CLI", "bold", "cyan") + - colorize(` v${packageJson.version}`, "dim") - ); - console.log(colorize("=".repeat(50), "dim")); - console.log( - `${colorize("Local path:", "dim")} ${colorize(absolutePath, "green")}` - ); - console.log( - `${colorize("Remote URI:", "dim")} ${colorize(args.remoteUri, "cyan")}` - ); - console.log( - `${colorize("Vault name:", "dim")} ${colorize(args.vaultName, "green")}` - ); - console.log(""); + if (!args.quiet) { + console.log( + styleText("VaultLink Local CLI", "bold", "cyan") + + colorize(` v${packageJson.version}`, "dim") + ); + console.log(colorize("=".repeat(50), "dim")); + console.log( + `${colorize("Local path:", "dim")} ${colorize(absolutePath, "green")}` + ); + console.log( + `${colorize("Remote URI:", "dim")} ${colorize(args.remoteUri, "cyan")}` + ); + console.log( + `${colorize("Vault name:", "dim")} ${colorize(args.vaultName, "green")}` + ); + if (args.lineEndings !== "auto") { + console.log( + `${colorize("Line endings:", "dim")} ${colorize(args.lineEndings.toUpperCase(), "green")}` + ); + } + console.log(""); + } const dataDir = path.join(absolutePath, ".vaultlink"); const dataFile = path.join(dataDir, "sync-data.json"); @@ -98,8 +119,6 @@ async function main(): Promise { remoteUri: args.remoteUri, token: args.token, vaultName: args.vaultName, - syncConcurrency: - args.syncConcurrency ?? DEFAULT_SETTINGS.syncConcurrency, maxFileSizeMB: args.maxFileSizeMB ?? DEFAULT_SETTINGS.maxFileSizeMB, ignorePatterns, webSocketRetryIntervalMs: @@ -141,7 +160,7 @@ async function main(): Promise { ); } }, - nativeLineEndings: process.platform === "win32" ? "\r\n" : "\n" + nativeLineEndings: resolveLineEndings(args.lineEndings) }); if (args.health !== undefined) { @@ -183,11 +202,32 @@ async function main(): Promise { ); }); + // Throttled progress reporting + let syncBatchSize = 0; + let totalSyncOps = 0; + let lastProgressLogTime = 0; + client.onRemainingOperationsCountChanged.add((remaining) => { + if (remaining > syncBatchSize) { + syncBatchSize = remaining; + } + if (remaining === 0) { - client.logger.info("All sync operations completed"); + if (syncBatchSize > 0) { + totalSyncOps += syncBatchSize; + client.logger.info( + `Sync batch complete (${syncBatchSize} operations)` + ); + syncBatchSize = 0; + } } else { - client.logger.info(`${remaining} sync operations remaining`); + const now = Date.now(); + if (now - lastProgressLogTime >= PROGRESS_LOG_INTERVAL_MS) { + client.logger.info( + `Syncing: ${remaining} operations remaining` + ); + lastProgressLogTime = now; + } } }); @@ -208,7 +248,17 @@ async function main(): Promise { fileWatcher.stop(); await client.waitUntilFinished(); await client.destroy(); - console.log(colorize("Shutdown complete", "green")); + + if (totalSyncOps > 0) { + console.log( + colorize( + `Shutdown complete (${totalSyncOps} operations synced)`, + "green" + ) + ); + } else { + console.log(colorize("Shutdown complete", "green")); + } process.exit(0); }; @@ -231,9 +281,13 @@ async function main(): Promise { process.exit(1); } - console.log(`${colorize("✓", "green")} Server connection successful`); - console.log(colorize("Press Ctrl+C to stop", "dim")); - console.log(""); + if (!args.quiet) { + console.log( + `${colorize("✓", "green")} Server connection successful` + ); + console.log(colorize("Press Ctrl+C to stop", "dim")); + console.log(""); + } await client.start(); fileWatcher.start(); diff --git a/frontend/local-client-cli/src/file-watcher.ts b/frontend/local-client-cli/src/file-watcher.ts index 81e83cab..0353b495 100644 --- a/frontend/local-client-cli/src/file-watcher.ts +++ b/frontend/local-client-cli/src/file-watcher.ts @@ -1,16 +1,20 @@ import Watcher from "watcher"; import * as path from "path"; import type { SyncClient, RelativePath } from "sync-client"; +import { toUnixPath, compileGlobPattern } from "./path-utils"; export class FileWatcher { private watcher: Watcher | undefined; private isRunning = false; + private readonly compiledPatterns: RegExp[]; public constructor( private readonly basePath: string, private readonly client: SyncClient, - private readonly ignorePatterns: string[] = [] - ) {} + ignorePatterns: string[] = [] + ) { + this.compiledPatterns = ignorePatterns.map(compileGlobPattern); + } public start(): void { if (this.isRunning) { @@ -24,7 +28,8 @@ export class FileWatcher { renameDetection: true, renameTimeout: 125, ignoreInitial: true, - ignore: (filePath: string) => this.shouldIgnore(filePath) + ignore: (filePath: string): boolean => + this.shouldIgnore(filePath) }); this.watcher.on("add", (filePath: string) => { @@ -59,16 +64,8 @@ export class FileWatcher { } private shouldIgnore(filePath: string): boolean { - const rel = path - .relative(this.basePath, filePath) - .replace(/\\/g, "/"); - return this.ignorePatterns.some((pattern) => { - if (pattern.endsWith("/**")) { - const prefix = pattern.slice(0, -3); - return rel === prefix || rel.startsWith(prefix + "/"); - } - return rel === pattern; - }); + const rel = toUnixPath(path.relative(this.basePath, filePath)); + return this.compiledPatterns.some((regex) => regex.test(rel)); } private handleCreate(relativePath: RelativePath): void { @@ -116,18 +113,7 @@ export class FileWatcher { } private toRelativePath(absolutePath: string): RelativePath { - const relative = path.relative(this.basePath, absolutePath); - return this.toUnixPath(relative); - } - - /** - * Convert a native platform path to forward slashes - */ - private toUnixPath(nativePath: string): string { - if (path.sep === "\\") { - return nativePath.replace(/\\/g, "/"); - } - return nativePath; + return toUnixPath(path.relative(this.basePath, absolutePath)); } private formatError(err: unknown): string { diff --git a/frontend/local-client-cli/src/node-filesystem.ts b/frontend/local-client-cli/src/node-filesystem.ts index 734894a3..024e1073 100644 --- a/frontend/local-client-cli/src/node-filesystem.ts +++ b/frontend/local-client-cli/src/node-filesystem.ts @@ -6,6 +6,7 @@ import type { RelativePath, TextWithCursors } from "sync-client"; +import { toUnixPath, toNativePath } from "./path-utils"; export class NodeFileSystemOperations implements FileSystemOperations { public constructor(private readonly basePath: string) {} @@ -15,7 +16,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { ): Promise { const files: RelativePath[] = []; await this.walkDirectory( - directory !== undefined ? this.toNativePath(directory) : "", + directory !== undefined ? toNativePath(directory) : "", files ); return files; @@ -24,7 +25,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { public async read(relativePath: RelativePath): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { return await fs.readFile(fullPath); @@ -41,7 +42,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { ): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); const dir = path.dirname(fullPath); @@ -61,7 +62,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { ): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { @@ -79,7 +80,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { public async getFileSize(relativePath: RelativePath): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { const stats = await fs.stat(fullPath); @@ -94,7 +95,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { public async exists(relativePath: RelativePath): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { await fs.access(fullPath); @@ -107,7 +108,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { public async createDirectory(relativePath: RelativePath): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { await fs.mkdir(fullPath, { recursive: false }); @@ -121,7 +122,7 @@ export class NodeFileSystemOperations implements FileSystemOperations { public async delete(relativePath: RelativePath): Promise { const fullPath = path.join( this.basePath, - this.toNativePath(relativePath) + toNativePath(relativePath) ); try { await fs.unlink(fullPath); @@ -138,11 +139,11 @@ export class NodeFileSystemOperations implements FileSystemOperations { ): Promise { const oldFullPath = path.join( this.basePath, - this.toNativePath(oldPath) + toNativePath(oldPath) ); const newFullPath = path.join( this.basePath, - this.toNativePath(newPath) + toNativePath(newPath) ); const newDir = path.dirname(newFullPath); @@ -192,28 +193,9 @@ export class NodeFileSystemOperations implements FileSystemOperations { await this.walkDirectory(entryRelativePath, files); } else if (entry.isFile()) { // Always return forward slashes - files.push(this.toUnixPath(entryRelativePath)); + files.push(toUnixPath(entryRelativePath)); } } } - /** - * Convert a forward-slash path to native platform path separators - */ - private toNativePath(relativePath: string): string { - if (path.sep === "\\") { - return relativePath.replace(/\//g, "\\"); - } - return relativePath; - } - - /** - * Convert a native platform path to forward slashes - */ - private toUnixPath(nativePath: string): string { - if (path.sep === "\\") { - return nativePath.replace(/\\/g, "/"); - } - return nativePath; - } } diff --git a/frontend/local-client-cli/src/path-utils.test.ts b/frontend/local-client-cli/src/path-utils.test.ts new file mode 100644 index 00000000..4162f290 --- /dev/null +++ b/frontend/local-client-cli/src/path-utils.test.ts @@ -0,0 +1,65 @@ +import { test } from "node:test"; +import * as assert from "node:assert/strict"; +import { compileGlobPattern, toUnixPath } from "./path-utils"; + +function matches(path: string, pattern: string): boolean { + return compileGlobPattern(pattern).test(path); +} + +test("compileGlobPattern - exact match", () => { + assert.equal(matches(".DS_Store", ".DS_Store"), true); + assert.equal(matches("other", ".DS_Store"), false); +}); + +test("compileGlobPattern - dir/** matches directory and contents", () => { + assert.equal(matches(".git", ".git/**"), true); + assert.equal(matches(".git/config", ".git/**"), true); + assert.equal(matches(".git/refs/heads/main", ".git/**"), true); + assert.equal(matches(".gitignore", ".git/**"), false); +}); + +test("compileGlobPattern - * matches within a single segment", () => { + assert.equal(matches("foo.tmp", "*.tmp"), true); + assert.equal(matches("bar.tmp", "*.tmp"), true); + assert.equal(matches("foo.md", "*.tmp"), false); + // * does NOT cross path separators + assert.equal(matches("dir/foo.tmp", "*.tmp"), false); +}); + +test("compileGlobPattern - **/*.ext matches at any depth", () => { + assert.equal(matches("foo.tmp", "**/*.tmp"), true); + assert.equal(matches("dir/foo.tmp", "**/*.tmp"), true); + assert.equal(matches("a/b/c/foo.tmp", "**/*.tmp"), true); + assert.equal(matches("foo.md", "**/*.tmp"), false); +}); + +test("compileGlobPattern - ? matches single character", () => { + assert.equal(matches("a.md", "?.md"), true); + assert.equal(matches("ab.md", "?.md"), false); + assert.equal(matches(".md", "?.md"), false); +}); + +test("compileGlobPattern - dots are escaped", () => { + assert.equal(matches(".DS_Store", ".DS_Store"), true); + assert.equal(matches("xDS_Store", ".DS_Store"), false); +}); + +test("compileGlobPattern - node_modules/** matches directory tree", () => { + assert.equal(matches("node_modules", "node_modules/**"), true); + assert.equal(matches("node_modules/foo", "node_modules/**"), true); + assert.equal( + matches("node_modules/foo/bar/baz.js", "node_modules/**"), + true + ); + assert.equal(matches("not_node_modules", "node_modules/**"), false); +}); + +test("compileGlobPattern - **/ prefix matches zero or more segments", () => { + assert.equal(matches("test.log", "**/test.log"), true); + assert.equal(matches("dir/test.log", "**/test.log"), true); + assert.equal(matches("a/b/test.log", "**/test.log"), true); +}); + +test("toUnixPath - forward slashes unchanged", () => { + assert.equal(toUnixPath("foo/bar/baz"), "foo/bar/baz"); +}); diff --git a/frontend/local-client-cli/src/path-utils.ts b/frontend/local-client-cli/src/path-utils.ts new file mode 100644 index 00000000..6cec10d5 --- /dev/null +++ b/frontend/local-client-cli/src/path-utils.ts @@ -0,0 +1,74 @@ +import * as path from "path"; + +/** + * Convert a native platform path to forward slashes. + * On non-Windows platforms this is a no-op. + */ +export function toUnixPath(nativePath: string): string { + if (path.sep === "\\") { + return nativePath.replace(/\\/g, "/"); + } + return nativePath; +} + +/** + * Convert a forward-slash path to native platform path separators. + * On non-Windows platforms this is a no-op. + */ +export function toNativePath(forwardSlashPath: string): string { + if (path.sep === "\\") { + return forwardSlashPath.replace(/\//g, "\\"); + } + return forwardSlashPath; +} + +function escapeRegex(str: string): string { + return str.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"); +} + +/** + * Compile a glob pattern into a RegExp for repeated matching. + * Supports: + * - `*` matches any characters within a single path segment + * - `**` matches zero or more path segments + * - `?` matches a single character (not `/`) + * - `dir/**` matches the directory itself and all its contents + * - combined with `*.ext` matches files with the extension at any depth + */ +export function compileGlobPattern(pattern: string): RegExp { + // Trailing /** matches the directory itself and all its contents + if (pattern.endsWith("/**")) { + const prefix = escapeRegex(pattern.slice(0, -3)); + return new RegExp(`^${prefix}(/.*)?$`); + } + + let result = "^"; + let i = 0; + while (i < pattern.length) { + const c = pattern[i]; + if (c === "*" && pattern[i + 1] === "*") { + if (pattern[i + 2] === "/") { + // **/ matches zero or more directory segments + result += "(?:.+/)?"; + i += 3; + } else { + result += ".*"; + i += 2; + } + } else if (c === "*") { + result += "[^/]*"; + i++; + } else if (c === "?") { + result += "[^/]"; + i++; + } else if (".+^${}()|[]\\".includes(c)) { + result += "\\" + c; + i++; + } else { + result += c; + i++; + } + } + result += "$"; + return new RegExp(result); +} diff --git a/frontend/obsidian-plugin/package.json b/frontend/obsidian-plugin/package.json index d735f98e..d24e537b 100644 --- a/frontend/obsidian-plugin/package.json +++ b/frontend/obsidian-plugin/package.json @@ -20,7 +20,7 @@ "fs-extra": "^11.3.2", "mini-css-extract-plugin": "^2.9.4", "obsidian": "1.11.0", - "reconcile-text": "^0.8.0", + "reconcile-text": "^0.11.0", "resolve-url-loader": "^5.0.0", "sass": "^1.96.0", "sass-loader": "^16.0.6", diff --git a/frontend/obsidian-plugin/src/views/cursors/remote-cursors-plugin.ts b/frontend/obsidian-plugin/src/views/cursors/remote-cursors-plugin.ts index 1191d9a2..d6650dcb 100644 --- a/frontend/obsidian-plugin/src/views/cursors/remote-cursors-plugin.ts +++ b/frontend/obsidian-plugin/src/views/cursors/remote-cursors-plugin.ts @@ -132,7 +132,8 @@ export class RemoteCursorsPluginValue implements PluginValue { ] ) }, - edited + edited, + "Markdown" ); reconciled.cursors.forEach(({ id, position }) => { diff --git a/frontend/obsidian-plugin/src/views/settings/settings-tab.ts b/frontend/obsidian-plugin/src/views/settings/settings-tab.ts index e38850a2..a0c81522 100644 --- a/frontend/obsidian-plugin/src/views/settings/settings-tab.ts +++ b/frontend/obsidian-plugin/src/views/settings/settings-tab.ts @@ -350,22 +350,6 @@ export class SyncSettingsTab extends PluginSettingTab { }) ); - new Setting(containerEl) - .setName("Sync concurrency") - .setDesc( - "How many concurrent sync operations to run. Setting this value higher may increase the overall performance, however, it will require more memory as well. If you notice frequent crashes, especially on mobile, set this to 1." - ) - .addSlider((text) => - text - .setLimits(1, 16, 1) - .setDynamicTooltip() - .setInstant(false) - .setValue(this.syncClient.getSettings().syncConcurrency) - .onChange(async (value) => - this.syncClient.setSetting("syncConcurrency", value) - ) - ); - new Setting(containerEl) .setName("Maximum file size to be uploaded (MB)") .setDesc( diff --git a/frontend/package-lock.json b/frontend/package-lock.json index e554899d..6b8d31f3 100644 --- a/frontend/package-lock.json +++ b/frontend/package-lock.json @@ -10,7 +10,8 @@ "obsidian-plugin", "test-client", "deterministic-tests", - "local-client-cli" + "local-client-cli", + "history-ui" ], "devDependencies": { "concurrently": "^9.2.1", @@ -36,6 +37,14 @@ "webpack-cli": "^6.0.1" } }, + "history-ui": { + "version": "0.14.0", + "devDependencies": { + "@sveltejs/vite-plugin-svelte": "^5.0.0", + "svelte": "^5.0.0", + "vite": "^6.0.0" + } + }, "local-client-cli": { "version": 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"peerDependencies": { + "vite": "^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0 || ^7.0.0 || ^8.0.0-beta.0" + }, + "peerDependenciesMeta": { + "vite": { + "optional": true + } + } + }, "node_modules/w3c-keyname": { "version": "2.2.8", "resolved": "https://registry.npmjs.org/w3c-keyname/-/w3c-keyname-2.2.8.tgz", "integrity": "sha512-dpojBhNsCNN7T82Tm7k26A6G9ML3NkhDsnw9n/eoxSRlVBB4CEtIQ/KTCLI2Fwf3ataSXRhYFkQi3SlnFwPvPQ==", "dev": true, - "license": "MIT" + "license": "MIT", + "peer": true }, "node_modules/watcher": { "version": "2.3.1", @@ -3861,7 +5568,6 @@ "integrity": "sha512-HU1JOuV1OavsZ+mfigY0j8d1TgQgbZ6M+J75zDkpEAwYeXjWSqrGJtgnPblJjd/mAyTNQ7ygw0MiKOn6etz8yw==", "dev": true, "license": "MIT", - "peer": true, "dependencies": { "@types/eslint-scope": "^3.7.7", "@types/estree": "^1.0.8", @@ -3909,7 +5615,6 @@ "version": "6.0.1", "dev": true, "license": "MIT", - "peer": true, "dependencies": { "@discoveryjs/json-ext": "^0.6.1", "@webpack-cli/configtest": "^3.0.1", @@ -3988,7 +5693,6 @@ 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+ "murmurhash3js-revisited": "^3.0.0" + }, "devDependencies": { "@sentry/browser": "^10.30.0", + "@types/murmurhash3js-revisited": "^3.0.3", "@types/node": "^25.0.2", "byte-base64": "^1.1.0", "minimatch": "^10.1.1", "p-queue": "^9.0.1", - "reconcile-text": "^0.8.0", + "reconcile-text": "^0.11.0", "ts-loader": "^9.5.4", "tslib": "2.8.1", "tsx": "^4.21.0", diff --git a/frontend/package.json b/frontend/package.json index 2d95c443..69edb1fe 100644 --- a/frontend/package.json +++ b/frontend/package.json @@ -6,7 +6,8 @@ "obsidian-plugin", "test-client", "deterministic-tests", - "local-client-cli" + "local-client-cli", + "history-ui" ], "prettier": { "trailingComma": "none", diff --git a/frontend/sync-client/ARCHITECTURE.md b/frontend/sync-client/ARCHITECTURE.md new file mode 100644 index 00000000..bdfca351 --- /dev/null +++ b/frontend/sync-client/ARCHITECTURE.md @@ -0,0 +1,197 @@ +# Sync Client Architecture + +## Overview + +The sync client synchronizes Obsidian vault files between clients via a central server. It handles offline edits, concurrent multi-client changes, crash recovery, and real-time updates via WebSocket. + +## Architecture Layers + +``` +SyncClient (public API — unchanged) + │ + ├── Syncer (event router + reconciliation orchestrator) + │ │ + │ ├── SyncEventQueue (per-document coalescing FIFO) + │ │ │ + │ │ └── executor callback → sync-actions functions + │ │ + │ └── VirtualFilesystem (document identity + state tracking) + │ + ├── WebSocketManager (connection, message serialization) + ├── FileOperations (filesystem abstraction, 3-way merge on write) + ├── SyncService (HTTP client for server REST API) + ├── CursorTracker (collaborative cursor positions) + └── ContentCache (LRU cache for diff computation) +``` + +## Key Design Decisions + +### 1. Sequential Processing + +All sync operations run one at a time. No concurrent sync operations, no locks, no deadlock prevention, no generation counters. The server uses SQLite which serializes writes anyway, so client-side parallelism provided no real benefit while creating enormous complexity. + +The only concurrency that remains is between the sync queue and the WebSocket message handler, but both funnel events into the same sequential queue. + +### 2. Virtual Filesystem (VFS) + +Replaces the old `Database` class. Documents have explicit states as a discriminated union: + +```typescript +type VirtualDocument = + | PendingDocument // Created locally, server doesn't know yet + | TrackedDocument // Synced with server + | DeletedLocallyDocument // Deleted locally, server not yet notified +``` + +Three internal indexes replace the old flat array + `parallelVersion` system: +- `pathIndex` — at most one live document per path +- `documentIdIndex` — all documents with a server-assigned ID +- `idempotencyKeyIndex` — pending documents only + +No more inferring state from `metadata === undefined` + `isDeleted` + `parentVersionId === 0`. The state field is the discriminator. + +### 3. Per-Document Event Coalescing + +Events from file watchers and WebSocket broadcasts are grouped by document identity and coalesced: +- 10 rapid edits → 1 sync operation (content read at execution time) +- create then delete → noop (file never reached the server) +- move A→B then B→C → move A→C + +This replaces the old opaque-closure FIFO where every event was independent. + +### 4. Server Protocol Unchanged + +The server still does 3-way merging via `reconcile-text`. Response types (`FastForwardUpdate`, `MergingUpdate`) are unchanged. The client content cache remains for diff computation (needed for mobile bandwidth). Idempotency keys remain for crash-safe creates. No server changes were made. + +## Module Descriptions + +### `persistence/vfs.ts` — Virtual Filesystem + +Tracks document identity across creates, moves, deletes. Provides: +- State transitions: `createPending()`, `confirmCreate()`, `assignDocumentId()`, `updateTracked()`, `deleteLocally()`, `confirmDelete()` +- Queries: `getByPath()`, `getByDocumentId()`, `getByIdempotencyKey()` +- Disk reconciliation: `reconcileWithDisk()` returns a pure result comparing VFS state against filesystem +- Persistence: serializes to `StoredDatabase` format (backward compatible) + +### `sync-operations/sync-events.ts` — Event Types + Coalescing + +Pure functions with no side effects. Defines `SyncEvent` (6 types from file watchers and WebSocket) and `CoalescedAction` (8 possible merged actions). The `coalesce()` function implements a 48-entry transition table. + +### `sync-operations/sync-event-queue.ts` — Event Queue + +Per-document coalescing FIFO. Maps each event to a document key (documentId for tracked docs, `path:` for pending docs). Processes one document at a time via an injected executor. Supports key migration when pending docs receive a documentId. + +On reset (WebSocket disconnect): remote events are cleared (server replays on reconnect), local events are preserved (unsynced user actions). + +### `sync-operations/sync-actions.ts` — Sync Action Implementations + +Extracted from the old `unrestricted-syncer.ts`. Each function takes explicit dependencies (`SyncDeps`) and a VFS document: + +- `executeSyncCreate()` — POST to server with idempotencyKey, handle response +- `executeSyncUpdate()` — compute diff from cache, PUT to server +- `executeSyncDelete()` — DELETE on server, confirm in VFS +- `executeRemoteUpdate()` — download content, write to disk, update VFS +- `applyServerResponse()` — handle MergingUpdate/FastForwardUpdate, path changes, idempotent returns + +### `sync-operations/syncer.ts` — Orchestrator + +Thin layer that: +- Converts file change events → `SyncEvent` objects → enqueue +- Converts WebSocket broadcasts → `SyncEvent` objects → enqueue +- Sets up the executor that dispatches `CoalescedAction` → sync-actions functions +- Runs offline reconciliation: resolve idempotency keys → scan filesystem → enqueue results +- Manages the `scheduleSyncForOfflineChanges` lifecycle + +## Offline Reconciliation Algorithm + +Runs on startup and WebSocket reconnect: + +1. **Resolve idempotency keys** — call server for pending creates whose responses were lost +2. **Clean up orphans** — remove pending docs whose files no longer exist +3. **Scan filesystem** — `vfs.reconcileWithDisk()` compares VFS state vs actual files +4. **Apply moves** — update VFS for detected file moves (content hash matching) +5. **Enqueue events** in order: + - Interrupted deletes (VFS says deleted-locally, file gone, server not notified) + - Moves (detected via hash matching) + - Updates (file content changed) + - Creates (new files with no VFS entry) + - Delete candidates (VFS entry but file missing, not matched as a move) + +Creates run before delete candidates so the server can merge creates with existing documents (preserving documentIds). + +## Document Lifecycle + +``` +[File created locally] + → VFS: createPending(path) → PendingDocument + → Queue: enqueue local-create + → Action: POST /documents with idempotencyKey + → Server: returns FastForwardUpdate or MergingUpdate + → VFS: confirmCreate() → TrackedDocument + +[File edited locally] + → Queue: enqueue local-update + → Action: compute diff, PUT /documents/:id/text + → Server: returns FastForwardUpdate or MergingUpdate + → VFS: updateTracked() + +[File deleted locally] + → VFS: deleteLocally() → DeletedLocallyDocument (or removed if pending) + → Queue: enqueue local-delete + → Action: DELETE /documents/:id + → VFS: confirmDelete() → removed + +[Remote update via WebSocket] + → Queue: enqueue remote-update + → Action: fetch content, write to disk + → VFS: updateTracked() + +[Crash during create → restart] + → VFS loads PendingDocument from disk (idempotencyKey preserved) + → resolveIdempotencyKeys() maps key → documentId + → VFS: assignDocumentId() → TrackedDocument with serverVersion=0 + → Queue: enqueue local-create (retry) + → Server: returns existing document (idempotent) + → VFS: updateTracked() with real serverVersion +``` + +## Invariants + +1. **All state mutations go through the sequential queue.** No document state can change while a sync operation is running. File-change handlers and WebSocket handlers only enqueue events. + +2. **Content cache stores server content after merges.** The cache is used for diff computation: `diff(cached_server_content, new_local_content)`. The server applies diffs against its content at `parentVersionId`. + +3. **Idempotency keys survive crashes.** VFS persists pending documents with their keys. On restart, `resolveIdempotencyKeys` maps keys to documentIds. The key is preserved on TrackedDocument when `serverVersion === 0` so retry creates remain idempotent. + +4. **Write file before updating metadata.** If the write fails, metadata still points to the old version. On recovery, the stale `serverVersion` triggers a re-fetch from server. + +5. **Local events survive reset.** When the WebSocket disconnects, remote events are cleared (server replays on reconnect) but local events are preserved in the queue as unsynced user actions. + +6. **Creates run before delete candidates** in the reconciliation ordering. A create may adopt a "deleted" document's identity via server-side merge. + +## What Was Removed + +- **PQueue** — configurable concurrency queue (replaced by sequential event queue) +- **Locks** — per-document multi-key locks with alphabetical ordering +- **Generation counters** — `resetGeneration` for stale operation detection +- **`containsDocument` guards** — 11 guards after async operations for concurrent-delete protection +- **`parentVersionIdForUpdate` snapshots** — mutable reference protection +- **`parallelVersion`** — collision tracking for multiple docs at same path +- **`UnrestrictedSyncer`** — 1,169-line class with nested if/else (replaced by sync-actions.ts with explicit dispatch) +- **`Database` class usage** — replaced by VFS everywhere (class still exists for type exports) + +## Files + +``` +persistence/ + vfs.ts 779 lines — Virtual Filesystem + database.ts 535 lines — Type definitions only (StoredDatabase, RelativePath, etc.) + +sync-operations/ + syncer.ts 615 lines — Orchestrator + sync-actions.ts 1229 lines — Action implementations + sync-event-queue.ts 242 lines — Per-document coalescing queue + sync-events.ts 297 lines — Event types + coalescing logic + unrestricted-syncer.ts 1169 lines — DEAD CODE (not imported, to be deleted) + cursor-tracker.ts 273 lines — Cursor position tracking +``` diff --git a/frontend/sync-client/package.json b/frontend/sync-client/package.json index 45c33764..4c032d4c 100644 --- a/frontend/sync-client/package.json +++ b/frontend/sync-client/package.json @@ -13,18 +13,22 @@ "test": "tsx --test 'src/**/*.test.ts'" }, "devDependencies": { + "@sentry/browser": "^10.30.0", + "@types/murmurhash3js-revisited": "^3.0.3", + "@types/node": "^25.0.2", "byte-base64": "^1.1.0", "minimatch": "^10.1.1", "p-queue": "^9.0.1", - "reconcile-text": "^0.8.0", - "@types/node": "^25.0.2", + "reconcile-text": "^0.11.0", "ts-loader": "^9.5.4", "tslib": "2.8.1", "tsx": "^4.21.0", "typescript": "5.9.3", "webpack": "^5.103.0", "webpack-cli": "^6.0.1", - "webpack-merge": "^6.0.1", - "@sentry/browser": "^10.30.0" + "webpack-merge": "^6.0.1" + }, + "dependencies": { + "murmurhash3js-revisited": "^3.0.0" } } diff --git a/frontend/sync-client/src/consts.ts b/frontend/sync-client/src/consts.ts index 9e4fa7d2..9e983c72 100644 --- a/frontend/sync-client/src/consts.ts +++ b/frontend/sync-client/src/consts.ts @@ -5,3 +5,5 @@ export const MAX_HISTORY_ENTRY_COUNT = 5000; export const SUPPORTED_API_VERSION = 3; export const WEBSOCKET_DISCONNECT_TIMEOUT_IN_SECONDS = 10; export const WEBSOCKET_CONNECTION_TIMEOUT_IN_SECONDS = 10; +export const WEBSOCKET_HEARTBEAT_INTERVAL_MS = 30_000; +export const WEBSOCKET_HEARTBEAT_TIMEOUT_MS = 90_000; diff --git a/frontend/sync-client/src/file-operations/file-operations.test.ts b/frontend/sync-client/src/file-operations/file-operations.test.ts index 27724ee9..f454d2ca 100644 --- a/frontend/sync-client/src/file-operations/file-operations.test.ts +++ b/frontend/sync-client/src/file-operations/file-operations.test.ts @@ -1,9 +1,6 @@ import { describe, it } from "node:test"; -import type { - Database, - DocumentRecord, - RelativePath -} from "../persistence/database"; +import type { RelativePath } from "../persistence/database"; +import type { VirtualFilesystem } from "../persistence/vfs"; import { FileOperations } from "./file-operations"; import { Logger } from "../tracing/logger"; import { assertSetContainsExactly } from "../utils/assert-set-contains-exactly"; @@ -21,17 +18,14 @@ class MockServerConfig implements Pick { } } -class MockDatabase implements Partial { - public getLatestDocumentByRelativePath( - _target: RelativePath - ): DocumentRecord | undefined { - // no-op +class MockVfs implements Partial { + public getByPath(_path: string): undefined { return undefined; } public move( - _oldRelativePath: RelativePath, - _newRelativePath: RelativePath + _oldPath: string, + _newPath: string ): void { // no-op } @@ -89,7 +83,7 @@ describe("File operations", () => { const fileSystemOperations = new FakeFileSystemOperations(); const fileOperations = new FileOperations( new Logger(), - new MockDatabase() as Database, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + new MockVfs() as VirtualFilesystem, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion fileSystemOperations, new MockServerConfig() as ServerConfig // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion ); @@ -119,7 +113,7 @@ describe("File operations", () => { const fileSystemOperations = new FakeFileSystemOperations(); const fileOperations = new FileOperations( new Logger(), - new MockDatabase() as Database, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + new MockVfs() as VirtualFilesystem, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion fileSystemOperations, new MockServerConfig() as ServerConfig // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion ); @@ -159,7 +153,7 @@ describe("File operations", () => { const fileSystemOperations = new FakeFileSystemOperations(); const fileOperations = new FileOperations( new Logger(), - new MockDatabase() as Database, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + new MockVfs() as VirtualFilesystem, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion fileSystemOperations, new MockServerConfig() as ServerConfig // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion ); @@ -178,7 +172,7 @@ describe("File operations", () => { const fileSystemOperations = new FakeFileSystemOperations(); const fileOperations = new FileOperations( new Logger(), - new MockDatabase() as Database, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + new MockVfs() as VirtualFilesystem, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion fileSystemOperations, new MockServerConfig() as ServerConfig // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion ); @@ -207,7 +201,7 @@ describe("File operations", () => { const fileSystemOperations = new FakeFileSystemOperations(); const fileOperations = new FileOperations( new Logger(), - new MockDatabase() as Database, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + new MockVfs() as VirtualFilesystem, // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion fileSystemOperations, new MockServerConfig() as ServerConfig // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion ); diff --git a/frontend/sync-client/src/file-operations/file-operations.ts b/frontend/sync-client/src/file-operations/file-operations.ts index 863f62af..e75177c9 100644 --- a/frontend/sync-client/src/file-operations/file-operations.ts +++ b/frontend/sync-client/src/file-operations/file-operations.ts @@ -1,12 +1,15 @@ import type { Logger } from "../tracing/logger"; import type { FileSystemOperations } from "./filesystem-operations"; -import type { Database, RelativePath } from "../persistence/database"; +import type { RelativePath } from "../persistence/database"; +import type { VirtualFilesystem } from "../persistence/vfs"; import { SafeFileSystemOperations } from "./safe-filesystem-operations"; import type { TextWithCursors } from "reconcile-text"; import { reconcile } from "reconcile-text"; import { isFileTypeMergable } from "../utils/is-file-type-mergable"; import { isBinary } from "../utils/is-binary"; +import { decodeText, normalizeToUtf8 } from "../utils/decode-text"; import type { ServerConfig } from "../services/server-config"; +import { validateRelativePath } from "../utils/validate-relative-path"; export class FileOperations { private static readonly PARENTHESES_REGEX = / \((?\d+)\)$/; @@ -14,7 +17,7 @@ export class FileOperations { public constructor( private readonly logger: Logger, - private readonly database: Database, + private readonly vfs: VirtualFilesystem, fs: FileSystemOperations, private readonly serverConfig: ServerConfig, private readonly nativeLineEndings = "\n" @@ -41,7 +44,8 @@ export class FileOperations { } public async read(path: RelativePath): Promise { - return this.fromNativeLineEndings(await this.fs.read(path)); + const raw = await this.fs.read(path); + return this.fromNativeLineEndings(normalizeToUtf8(raw)); } /** @@ -54,25 +58,96 @@ export class FileOperations { path: RelativePath, newContent: Uint8Array ): Promise { + validateRelativePath(path); await this.ensureClearPath(path); return this.fs.write(path, this.toNativeLineEndings(newContent)); } - public async ensureClearPath(path: RelativePath): Promise { - if (await this.fs.exists(path)) { + public async ensureClearPath(path: RelativePath): Promise { + validateRelativePath(path); + // Acquire the lock on `path` first, then check existence inside the + // lock. The previous code checked exists() before locking, which + // created a TOCTOU race: two concurrent calls could both see the + // file as existing, but the second one would try to rename a file + // that was already moved by the first. + await this.fs.waitForLock(path); + try { + return await this.ensureClearPathLocked(path); + } finally { + this.fs.unlock(path); + } + } + + /** + * Internal implementation of `ensureClearPath` that assumes the caller + * already holds the file-level lock on `path`. This allows callers like + * `move()` to keep the lock held across both the clear and the subsequent + * rename, closing the race window where another operation could create a + * file at `path` between the two steps. + */ + private async ensureClearPathLocked( + path: RelativePath + ): Promise { + if (await this.fs.exists(path, true)) { const deconflictedPath = await this.deconflictPath(path); try { this.logger.debug( `Didn't expect ${path} to exist, deconflicting by moving it to '${deconflictedPath}'` ); - this.database.move(path, deconflictedPath); + // deconflictedPath is already locked via tryLock in + // deconflictPath(), so we pass skipLock=true to the + // rename to avoid deadlocking on the destination lock. await this.fs.rename(path, deconflictedPath, true); + try { + this.vfs.move(path, deconflictedPath); + + // Tell the sync system this displacement is system-initiated + // (not a user rename) by setting remoteRelativePath to the + // deconflicted path. This makes the check in + // syncLocallyUpdatedFile (remoteRelativePath === relativePath) + // pass, preventing the displacement from being uploaded as a + // rename to the server. Without this, the rename event from + // fs.rename() triggers an update with the deconflicted path, + // the server deconflicts further, and an infinite cascade + // ensues. The force:true content-match shortcut ensures that + // when the server eventually broadcasts the document's real + // path, the client just updates metadata without moving the + // file back. + const displacedDoc = + this.vfs.getByPath(deconflictedPath); + if ( + displacedDoc?.state === "tracked" && + displacedDoc.remoteRelativePath !== undefined + ) { + displacedDoc.remoteRelativePath = + deconflictedPath; + } + } catch (e) { + // vfs.move() failed (e.g., a non-deleted document + // already exists at deconflictedPath). Revert the + // filesystem rename to keep file and VFS + // consistent. If the revert also fails, log it — + // scheduleSyncForOfflineChanges will reconcile. + this.logger.warn( + `vfs.move(${path}, ${deconflictedPath}) failed in ensureClearPath: ${e}, reverting filesystem rename` + ); + try { + await this.fs.rename(deconflictedPath, path, true); + } catch (revertError) { + this.logger.warn( + `Failed to revert filesystem rename from ${deconflictedPath} to ${path}: ${revertError}` + ); + } + throw e; + } } finally { this.fs.unlock(deconflictedPath); } + return deconflictedPath; } else { await this.createParentDirectories(path); + return undefined; } } @@ -87,6 +162,7 @@ export class FileOperations { expectedContent: Uint8Array, newContent: Uint8Array ): Promise { + validateRelativePath(path); if (!(await this.fs.exists(path))) { this.logger.debug( `The caller assumed ${path} exists, but it no longer, so we wont recreate it` @@ -113,8 +189,10 @@ export class FileOperations { return; } - const expectedText = new TextDecoder().decode(expectedContent); // this comes from a previous read which must only have \n line endings - const newText = new TextDecoder().decode(newContent); // this comes from the server which stores text with \n line endings + const expectedText = (decodeText(expectedContent) ?? "").normalize( + "NFC" + ); // this comes from a previous read which must only have \n line endings + const newText = (decodeText(newContent) ?? "").normalize("NFC"); // this comes from the server which stores text with \n line endings await this.fs.atomicUpdateText( path, @@ -123,12 +201,29 @@ export class FileOperations { `Performing a 3-way merge for ${path} with the expected content` ); - text = text.replaceAll(this.nativeLineEndings, "\n"); - const merged = reconcile( - expectedText, - { text, cursors }, - newText - ); + text = text + .replaceAll(this.nativeLineEndings, "\n") + .normalize("NFC"); + + let merged: TextWithCursors; + try { + merged = reconcile( + expectedText, + { text, cursors }, + newText, + "Markdown" + ); + } catch { + // 3-way merge failed (e.g., content was fully replaced + // by another agent). Save the local content as a conflict + // file before overwriting with the server's content, so + // the user's edits are never silently lost. + this.logger.info( + `3-way merge failed for ${path}, saving local content as conflict file and using server content` + ); + this.saveConflictFile(path, text); + merged = { text: newText, cursors: [] }; + } const resultText = merged.text.replaceAll( "\n", @@ -144,6 +239,7 @@ export class FileOperations { } public async delete(path: RelativePath): Promise { + validateRelativePath(path); if (await this.exists(path)) { await this.fs.delete(path); await this.deletingEmptyParentDirectoriesOfDeletedFile(path); @@ -164,13 +260,46 @@ export class FileOperations { oldPath: RelativePath, newPath: RelativePath ): Promise { + validateRelativePath(oldPath); + validateRelativePath(newPath); if (oldPath === newPath) { return; } - await this.ensureClearPath(newPath); - this.database.move(oldPath, newPath); - await this.fs.rename(oldPath, newPath); + // Hold the newPath lock across both ensureClearPath and rename. + // Without this, another operation could create a file at newPath + // between ensureClearPath releasing the lock and rename acquiring + // it, causing the rename to silently overwrite the new file. + await this.fs.waitForLock(newPath); + try { + await this.ensureClearPathLocked(newPath); + // skipLock=true because we already hold the newPath lock. + // The oldPath lock is not needed; sync operations run + // sequentially so no concurrent operation can race on paths. + await this.fs.rename(oldPath, newPath, true); + } finally { + this.fs.unlock(newPath); + } + try { + this.vfs.move(oldPath, newPath); + } catch (e) { + // vfs.move() failed (e.g., a non-deleted document already + // exists at newPath). Revert the filesystem rename to keep the + // file and VFS consistent. If the revert also fails, log + // it — scheduleSyncForOfflineChanges will reconcile on the + // next cycle. + this.logger.warn( + `vfs.move(${oldPath}, ${newPath}) failed: ${e}, reverting filesystem rename` + ); + try { + await this.fs.rename(newPath, oldPath); + } catch (revertError) { + this.logger.warn( + `Failed to revert filesystem rename from ${newPath} to ${oldPath}: ${revertError}` + ); + } + throw e; + } await this.deletingEmptyParentDirectoriesOfDeletedFile(oldPath); } @@ -204,25 +333,60 @@ export class FileOperations { } private fromNativeLineEndings(content: Uint8Array): Uint8Array { - if (isBinary(content)) { + const text = decodeText(content); + if (text === undefined) { return content; } - const decoder = new TextDecoder("utf-8"); - let text = decoder.decode(content); - text = text.replaceAll(this.nativeLineEndings, "\n"); - return new TextEncoder().encode(text); + const normalized = text.replaceAll(this.nativeLineEndings, "\n"); + return new TextEncoder().encode(normalized); } private toNativeLineEndings(content: Uint8Array): Uint8Array { - if (isBinary(content)) { + const text = decodeText(content); + if (text === undefined) { return content; } - const decoder = new TextDecoder("utf-8"); - let text = decoder.decode(content); - text = text.replaceAll("\n", this.nativeLineEndings); - return new TextEncoder().encode(text); + const normalized = text.replaceAll("\n", this.nativeLineEndings); + return new TextEncoder().encode(normalized); + } + + /** + * Save the local content of a file as a conflict file when 3-way merge + * fails, so the user's edits are never silently lost. The conflict file + * is created at a deconflicted path (e.g., "file (conflict 1).md"). + * + * This is fire-and-forget — errors are logged but do not prevent the + * caller from proceeding with the server's content. + */ + private saveConflictFile( + path: RelativePath, + localContent: string + ): void { + const contentBytes = new TextEncoder().encode( + localContent.replaceAll("\n", this.nativeLineEndings) + ); + // Fire-and-forget: we don't want a failed conflict-save to prevent + // the server content from being written. + void (async () => { + try { + const conflictPath = + await this.deconflictPath(path); + try { + await this.fs.write(conflictPath, contentBytes); + this.logger.info( + `Saved local content as conflict file: ${conflictPath}` + ); + } finally { + this.fs.unlock(conflictPath); + } + } catch (e) { + this.logger.warn( + `Failed to save conflict file for ${path}: ${e}` + ); + } + })(); } private async createParentDirectories(path: string): Promise { @@ -275,10 +439,12 @@ export class FileOperations { // Avoid multiple deconflictPath calls returning the same path if (this.fs.tryLock(newName)) { - const newDocument = - this.database.getLatestDocumentByRelativePath(newName); + // getByPath only returns live docs (pending/tracked), not + // deleted-locally ones, so a non-undefined result means + // the path is occupied. + const existingDoc = this.vfs.getByPath(newName); if ( - newDocument?.isDeleted === false || // the document might have been confirmed by the server at a new path but haven't yet moved there locally + existingDoc !== undefined || // the document might have been confirmed by the server at a new path but haven't yet moved there locally (await this.fs.exists(newName, true)) ) { this.fs.unlock(newName); diff --git a/frontend/sync-client/src/persistence/database.ts b/frontend/sync-client/src/persistence/database.ts index 91d9473c..e19abf48 100644 --- a/frontend/sync-client/src/persistence/database.ts +++ b/frontend/sync-client/src/persistence/database.ts @@ -1,26 +1,14 @@ -import type { Logger } from "../tracing/logger"; -import { EMPTY_HASH } from "../utils/hash"; -import { CoveredValues } from "../utils/data-structures/min-covered"; -import { awaitAll } from "../utils/await-all"; -import { removeFromArray } from "../utils/remove-from-array"; - export type VaultUpdateId = number; export type DocumentId = string; export type RelativePath = string; -export interface DocumentMetadata { - documentId: DocumentId; - parentVersionId: VaultUpdateId; - hash: string; - remoteRelativePath?: RelativePath; -} - export interface StoredDocumentMetadata { relativePath: RelativePath; documentId: DocumentId; parentVersionId: VaultUpdateId; remoteRelativePath?: RelativePath; hash: string; + isDeleted?: boolean; } export interface StoredPendingDocument { @@ -34,374 +22,3 @@ export interface StoredDatabase { pendingDocuments?: StoredPendingDocument[]; lastSeenUpdateId: VaultUpdateId | undefined; } - -/** - * Represents a document in the database. - * - * It is mutable and its content should always represent the latest - * state of the document on disk based on the update events we have seen. - */ -export interface DocumentRecord { - relativePath: RelativePath; - metadata: DocumentMetadata | undefined; - isDeleted: boolean; - parallelVersion: number; - /** The path when this pending document was first created locally. - * Survives renames so we can match it against server responses - * when a create request succeeded but the response was lost. */ - originalCreationPath?: RelativePath; - idempotencyKey?: string; -} - -export class Database { - private documents: DocumentRecord[]; - private lastSeenUpdateIds: CoveredValues; - - public constructor( - private readonly logger: Logger, - initialState: Partial | undefined, - private readonly saveData: (data: StoredDatabase) => Promise - ) { - initialState ??= {}; - - const validDocuments = (initialState.documents ?? []).filter( - (doc) => - this.validateStoredField(doc, "relativePath", "string") && - this.validateStoredField(doc, "documentId", "string") && - this.validateStoredField(doc, "parentVersionId", "number") - ); - - this.documents = validDocuments.map( - ({ relativePath, ...metadata }) => ({ - relativePath, - metadata, - isDeleted: false, - parallelVersion: 0 - }) - ); - - const validPendingDocuments = ( - initialState.pendingDocuments ?? [] - ).filter( - (doc) => - this.validateStoredField(doc, "relativePath", "string") && - this.validateStoredField(doc, "idempotencyKey", "string") - ); - - for (const pending of validPendingDocuments) { - const existing = this.getLatestDocumentByRelativePath( - pending.relativePath - ); - this.documents.push({ - relativePath: pending.relativePath, - metadata: undefined, - isDeleted: false, - parallelVersion: - existing !== undefined - ? existing.parallelVersion + 1 - : 0, - originalCreationPath: pending.originalCreationPath, - idempotencyKey: pending.idempotencyKey - }); - } - - this.ensureConsistency(); - this.logger.debug(`Loaded ${this.documents.length} documents`); - - const { lastSeenUpdateId } = initialState; - this.logger.debug(`Loaded last seen update id: ${lastSeenUpdateId}`); - this.lastSeenUpdateIds = new CoveredValues( - Math.max(0, lastSeenUpdateId ?? 0) // the first updateId will be 1 which is the first integer after -1 - ); - - this.documents.forEach((doc) => { - this.lastSeenUpdateIds.add(doc.metadata?.parentVersionId); - }); - } - - private validateStoredField( - doc: object, - field: string, - expectedType: "string" | "number" - ): boolean { - const value = (doc as Record)[field]; - if ( - typeof value !== expectedType || - (expectedType === "string" && !value) || - (expectedType === "number" && isNaN(value as number)) - ) { - this.logger.warn( - `Skipping stored document with invalid ${field}: ${JSON.stringify(doc)}` - ); - return false; - } - return true; - } - - public get length(): number { - return this.documents.length; - } - - public get resolvedDocuments(): DocumentRecord[] { - const paths = new Map(); - this.documents - // eslint-disable-next-line no-restricted-syntax -- Type narrowing, not removing a specific item - .filter(({ metadata }) => metadata !== undefined) - .forEach((record) => - paths.set(record.relativePath, [ - record, - ...(paths.get(record.relativePath) ?? []) - ]) - ); - - return Array.from(paths.values()).map((records) => { - records.sort( - (a, b) => b.parallelVersion - a.parallelVersion // descending - ); - - if ( - records.length > 1 && - records.some((current, i) => - i === 0 - ? false - : records[i - 1].parallelVersion === - current.parallelVersion - ) - ) { - throw new Error( - `Multiple documents with the same parallel version and path at ${records[0].relativePath}` - ); - } - return records[0]; - }); - } - - public get pendingDocuments(): DocumentRecord[] { - return this.documents.filter( - (doc) => doc.metadata === undefined && !doc.isDeleted - ); - } - - public updateDocumentMetadata( - metadata: { - documentId: DocumentId; - parentVersionId: VaultUpdateId; - hash: string; - remoteRelativePath: RelativePath; - }, - target: DocumentRecord - ): void { - if (!this.documents.includes(target)) { - throw new Error("Document not found in database"); - } - - this.logger.debug( - `Updating document metadata for ${target.relativePath} from ${JSON.stringify( - target.metadata, - null, - 2 - )} to ${JSON.stringify(metadata, null, 2)}` - ); - - target.metadata = metadata; - - this.saveInTheBackground(); - } - - public getLatestDocumentByRelativePath( - target: RelativePath - ): DocumentRecord | undefined { - const candidates = this.documents.filter( - ({ relativePath }) => relativePath === target - ); - candidates.sort((a, b) => b.parallelVersion - a.parallelVersion); // descending - return candidates[0]; - } - - public createNewPendingDocument( - relativePath: RelativePath - ): DocumentRecord { - this.logger.debug(`Creating new pending document: ${relativePath}`); - const previousEntry = - this.getLatestDocumentByRelativePath(relativePath); - - const entry: DocumentRecord = { - relativePath, - metadata: undefined, - isDeleted: false, - parallelVersion: - previousEntry?.parallelVersion === undefined - ? 0 - : previousEntry.parallelVersion + 1, - originalCreationPath: relativePath, - idempotencyKey: crypto.randomUUID() - }; - - this.documents.push(entry); - - // Save without consistency check — pending docs can't violate - // the documentId uniqueness invariant since they have no metadata. - void this.save().catch((error: unknown) => { - this.logger.error(`Error saving data: ${error}`); - }); - - return entry; - } - - public getDocumentByDocumentId( - target: DocumentId - ): DocumentRecord | undefined { - return this.documents.find( - ({ metadata }) => metadata?.documentId === target - ); - } - - public move( - oldRelativePath: RelativePath, - newRelativePath: RelativePath - ): void { - const oldDocument = - this.getLatestDocumentByRelativePath(oldRelativePath); - - if (oldDocument === undefined) { - return; - } - - const newDocument = - this.getLatestDocumentByRelativePath(newRelativePath); - if (newDocument?.isDeleted === false) { - throw new Error( - `Document already exists at new location: ${newRelativePath}` - ); - } - - oldDocument.relativePath = newRelativePath; - // We might be in a strange state where the target of the move has just got deleted, - // however, its metadata might already have a bunch of updates queued up for - // the document at the new location. We need to keep these updates. - oldDocument.parallelVersion = - newDocument !== undefined ? newDocument.parallelVersion + 1 : 0; - - this.saveInTheBackground(); - } - - public delete(relativePath: RelativePath): void { - const candidate = this.getLatestDocumentByRelativePath(relativePath); - if (candidate === undefined) { - return; - } - candidate.isDeleted = true; - } - - public removeDocument(target: DocumentRecord): void { - removeFromArray(this.documents, target); - this.saveInTheBackground(); - } - - public containsDocument(target: DocumentRecord): boolean { - return this.documents.includes(target); - } - - public getLastSeenUpdateId(): VaultUpdateId { - return this.lastSeenUpdateIds.min; - } - - public addSeenUpdateId(value: number): void { - const previousMin = this.lastSeenUpdateIds.min; - this.lastSeenUpdateIds.add(value); - if (previousMin !== this.lastSeenUpdateIds.min) { - this.saveInTheBackground(); - } - } - - public setLastSeenUpdateId(value: number): void { - this.lastSeenUpdateIds.min = value; - this.saveInTheBackground(); - } - - public reset(): void { - this.documents = []; - this.lastSeenUpdateIds = new CoveredValues( - 0 // the first updateId will be 1 which is the first integer after -1 - ); - this.saveInTheBackground(); - } - - public async save(): Promise { - return this.saveData({ - documents: this.resolvedDocuments.map( - ({ relativePath, metadata }) => ({ - relativePath, - // eslint-disable-next-line @typescript-eslint/no-non-null-assertion - ...metadata! // filtered to only docs with metadata set - }) - ), - pendingDocuments: this.pendingDocuments.map( - ({ relativePath, idempotencyKey, originalCreationPath }) => ({ - relativePath, - idempotencyKey: idempotencyKey!, - originalCreationPath: originalCreationPath! - }) - ), - lastSeenUpdateId: this.lastSeenUpdateIds.min - }); - } - - private ensureConsistency(): void { - // Check for duplicate documentIds across ALL documents with metadata, - // not just the deduplicated resolvedDocuments view. A duplicate on a - // lower-parallelVersion record would otherwise go undetected. - const allWithMetadata = this.documents - // eslint-disable-next-line no-restricted-syntax -- Type narrowing, not removing a specific item - .filter((d) => d.metadata !== undefined); - const documentIdSet = new Set(); - for (const doc of allWithMetadata) { - // eslint-disable-next-line @typescript-eslint/no-non-null-assertion - const docId = doc.metadata!.documentId; - if (documentIdSet.has(docId)) { - throw new Error( - `Duplicate documentId ${docId} found in database` - ); - } - documentIdSet.add(docId); - } - - // Also check the deduplicated view for path-level invariants - const idToPath = new Map(); - - this.resolvedDocuments.forEach(({ relativePath, metadata }) => { - if (metadata === undefined) { - return; - } - idToPath.set(metadata.documentId, [ - ...(idToPath.get(metadata.documentId) ?? []), - relativePath - ]); - }); - - const duplicates = Array.from(idToPath.entries()) - .filter(([_, paths]) => paths.length > 1) - .map(([id, paths]) => { - let details = ""; - for (const path of paths) { - const doc = this.getLatestDocumentByRelativePath(path); - details += `\n- ${JSON.stringify(doc, null, 2)}`; - } - return `${id} (${paths.join(", ")}): ${details}`; - }); - - if (duplicates.length > 0) { - throw new Error( - "Document IDs are not unique, found duplicates: " + - duplicates.join("; ") - ); - } - } - - private saveInTheBackground(): void { - this.ensureConsistency(); - void this.save().catch((error: unknown) => { - this.logger.error(`Error saving data: ${error}`); - }); - } -} diff --git a/frontend/sync-client/src/persistence/settings.ts b/frontend/sync-client/src/persistence/settings.ts index 9771b7f1..1d5418f7 100644 --- a/frontend/sync-client/src/persistence/settings.ts +++ b/frontend/sync-client/src/persistence/settings.ts @@ -6,7 +6,6 @@ export interface SyncSettings { remoteUri: string; token: string; vaultName: string; - syncConcurrency: number; isSyncEnabled: boolean; maxFileSizeMB: number; ignorePatterns: string[]; @@ -21,7 +20,6 @@ export const DEFAULT_SETTINGS: SyncSettings = { remoteUri: "", token: "", vaultName: "default", - syncConcurrency: 1, isSyncEnabled: false, maxFileSizeMB: 10, ignorePatterns: [], diff --git a/frontend/sync-client/src/persistence/vfs.ts b/frontend/sync-client/src/persistence/vfs.ts new file mode 100644 index 00000000..3464fdfe --- /dev/null +++ b/frontend/sync-client/src/persistence/vfs.ts @@ -0,0 +1,820 @@ +import type { Logger } from "../tracing/logger"; +import { EMPTY_HASH } from "../utils/hash"; +import { CoveredValues } from "../utils/data-structures/min-covered"; +import type { + StoredDatabase, + StoredDocumentMetadata, + StoredPendingDocument, + VaultUpdateId, + DocumentId, + RelativePath +} from "./database"; + +// --------------------------------------------------------------------------- +// Document state types (discriminated union) +// --------------------------------------------------------------------------- + +export interface PendingDocument { + readonly state: "pending"; + relativePath: string; + readonly idempotencyKey: string; + readonly originalCreationPath: string; +} + +export interface TrackedDocument { + readonly state: "tracked"; + relativePath: string; + documentId: string; + serverVersion: number; + localHash: string; + remoteRelativePath: string; + idempotencyKey?: string; +} + +export interface DeletedLocallyDocument { + readonly state: "deleted-locally"; + relativePath: string; + readonly documentId: string; + readonly serverVersion: number; + readonly remoteRelativePath: string; +} + +export type VirtualDocument = + | PendingDocument + | TrackedDocument + | DeletedLocallyDocument; + +// --------------------------------------------------------------------------- +// Reconciliation result +// --------------------------------------------------------------------------- + +export interface ReconciliationResult { + newFiles: string[]; + modifiedFiles: { path: string; documentId: string }[]; + missingFiles: VirtualDocument[]; + movedFiles: { document: TrackedDocument; newPath: string }[]; +} + +// --------------------------------------------------------------------------- +// VirtualFilesystem +// --------------------------------------------------------------------------- + +export class VirtualFilesystem { + /** One live document per path (pending or tracked, NOT deleted-locally). */ + private readonly pathIndex = new Map(); + + /** All documents that have a documentId (tracked + deleted-locally). */ + private readonly documentIdIndex = new Map(); + + /** Pending documents by idempotency key. */ + private readonly idempotencyKeyIndex = new Map(); + + private lastSeenUpdateIds: CoveredValues; + + private pendingSave: Promise = Promise.resolve(); + + public constructor( + private readonly logger: Logger, + initialState: Partial | undefined, + private readonly saveData: (data: StoredDatabase) => Promise + ) { + const state: Partial = initialState ?? {}; + + const validDocuments = (state.documents ?? []).filter( + (doc) => + this.validateStoredField(doc, "relativePath", "string") && + this.validateStoredField(doc, "documentId", "string") && + this.validateStoredField(doc, "parentVersionId", "number") + ); + + for (const stored of validDocuments) { + if (stored.isDeleted === true) { + const doc: DeletedLocallyDocument = { + state: "deleted-locally", + relativePath: stored.relativePath, + documentId: stored.documentId, + serverVersion: stored.parentVersionId, + remoteRelativePath: + stored.remoteRelativePath ?? stored.relativePath + }; + // deleted-locally docs go into documentIdIndex only + this.documentIdIndex.set(doc.documentId, doc); + } else { + const doc: TrackedDocument = { + state: "tracked", + relativePath: stored.relativePath, + documentId: stored.documentId, + serverVersion: stored.parentVersionId, + localHash: stored.hash, + remoteRelativePath: + stored.remoteRelativePath ?? stored.relativePath + }; + // If two stored documents have the same path, last one wins + // (matches old behavior where highest parallelVersion wins) + this.pathIndex.set(doc.relativePath, doc); + this.documentIdIndex.set(doc.documentId, doc); + } + } + + const validPendingDocuments = (state.pendingDocuments ?? []).filter( + (doc) => + this.validateStoredField(doc, "relativePath", "string") && + this.validateStoredField(doc, "idempotencyKey", "string") + ); + + for (const stored of validPendingDocuments) { + // If a live doc already exists at this path, skip the pending one + // only if the live doc is tracked (has metadata). If a pending doc + // already exists, skip duplicates. + const existing = this.pathIndex.get(stored.relativePath); + if (existing?.state === "pending") { + this.logger.debug( + `Skipping duplicate pending document at ${stored.relativePath}` + ); + continue; + } + + const doc: PendingDocument = { + state: "pending", + relativePath: stored.relativePath, + idempotencyKey: stored.idempotencyKey, + originalCreationPath: + stored.originalCreationPath ?? stored.relativePath + }; + + // A pending doc at a path where a tracked doc exists: the pending + // doc takes precedence in pathIndex (mirrors old behavior where + // pending has higher parallelVersion). + this.pathIndex.set(doc.relativePath, doc); + this.idempotencyKeyIndex.set(doc.idempotencyKey, doc); + } + + this.ensureConsistency(); + + const totalDocs = + this.pathIndex.size + this.deletedLocallyDocuments().length; + this.logger.debug(`Loaded ${totalDocs} documents`); + + const { lastSeenUpdateId } = state; + this.logger.debug(`Loaded last seen update id: ${lastSeenUpdateId}`); + this.lastSeenUpdateIds = new CoveredValues( + Math.max(0, lastSeenUpdateId ?? 0) + ); + + // Seed CoveredValues with known server versions + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "tracked") { + this.lastSeenUpdateIds.add(doc.serverVersion); + } else if (doc.state === "deleted-locally") { + this.lastSeenUpdateIds.add(doc.serverVersion); + } + } + } + + // ----------------------------------------------------------------------- + // Validation helper + // ----------------------------------------------------------------------- + + private validateStoredField( + doc: object, + field: string, + expectedType: "string" | "number" + ): boolean { + const value = (doc as Record)[field]; + if ( + typeof value !== expectedType || + (expectedType === "string" && !value) || + (expectedType === "number" && isNaN(value as number)) + ) { + this.logger.warn( + `Skipping stored document with invalid ${field}: ${JSON.stringify(doc)}` + ); + return false; + } + return true; + } + + // ----------------------------------------------------------------------- + // Queries + // ----------------------------------------------------------------------- + + public getByPath(path: string): VirtualDocument | undefined { + return this.pathIndex.get(path); + } + + public getByDocumentId(id: string): VirtualDocument | undefined { + return this.documentIdIndex.get(id); + } + + public getByIdempotencyKey(key: string): PendingDocument | undefined { + return this.idempotencyKeyIndex.get(key); + } + + public trackedDocuments(): TrackedDocument[] { + const result: TrackedDocument[] = []; + for (const doc of this.pathIndex.values()) { + if (doc.state === "tracked") { + result.push(doc); + } + } + return result; + } + + public pendingDocuments(): PendingDocument[] { + const result: PendingDocument[] = []; + for (const doc of this.pathIndex.values()) { + if (doc.state === "pending") { + result.push(doc); + } + } + return result; + } + + public deletedLocallyDocuments(): DeletedLocallyDocument[] { + const result: DeletedLocallyDocument[] = []; + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "deleted-locally") { + result.push(doc); + } + } + return result; + } + + /** All live documents (pending + tracked) that occupy a path. */ + public allLiveDocuments(): VirtualDocument[] { + return Array.from(this.pathIndex.values()); + } + + /** Total number of documents across all indexes (live + deleted-locally). */ + public get length(): number { + // pathIndex has live docs (pending + tracked). + // documentIdIndex has tracked + deleted-locally. + // Tracked docs appear in both, so count: + // pending (pathIndex only) + tracked (both) + deleted-locally (documentIdIndex only) + // = pathIndex.size + deletedLocally count + let deletedCount = 0; + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "deleted-locally") { + deletedCount++; + } + } + return this.pathIndex.size + deletedCount; + } + + public contains(doc: VirtualDocument): boolean { + switch (doc.state) { + case "pending": + return this.idempotencyKeyIndex.get(doc.idempotencyKey) === doc; + case "tracked": + return this.documentIdIndex.get(doc.documentId) === doc; + case "deleted-locally": + return this.documentIdIndex.get(doc.documentId) === doc; + } + } + + // ----------------------------------------------------------------------- + // Update ID tracking + // ----------------------------------------------------------------------- + + public getLastSeenUpdateId(): number { + return this.lastSeenUpdateIds.min; + } + + public addSeenUpdateId(value: number): void { + const previousMin = this.lastSeenUpdateIds.min; + this.lastSeenUpdateIds.add(value); + if (previousMin !== this.lastSeenUpdateIds.min) { + this.saveInTheBackground(); + } + } + + public setLastSeenUpdateId(value: number): void { + this.lastSeenUpdateIds.min = value; + this.saveInTheBackground(); + } + + // ----------------------------------------------------------------------- + // Mutations + // ----------------------------------------------------------------------- + + /** + * Create a pending document at the given path. If a pending document + * already exists at the path, return it (idempotent). Generates a new + * idempotency key via `crypto.randomUUID()`. + * + * Awaits save() so the idempotency key is persisted before any HTTP + * request is sent. + */ + public async createPending(path: string): Promise { + this.logger.debug(`Creating new pending document: ${path}`); + + const existing = this.pathIndex.get(path); + if (existing?.state === "pending") { + this.logger.debug( + `Pending document already exists at ${path}, reusing it` + ); + return existing; + } + + const doc: PendingDocument = { + state: "pending", + relativePath: path, + idempotencyKey: crypto.randomUUID(), + originalCreationPath: path + }; + + this.pathIndex.set(path, doc); + this.idempotencyKeyIndex.set(doc.idempotencyKey, doc); + + // Awaited so the idempotency key is persisted before any HTTP + // request is sent — a crash before save would lose the key. + await this.save(); + + return doc; + } + + /** + * Confirm a pending create: transition from pending to tracked. + * Removes the pending doc and inserts a tracked doc with full metadata. + */ + public confirmCreate( + idempotencyKey: string, + documentId: DocumentId, + serverVersion: VaultUpdateId, + localHash: string, + remoteRelativePath: RelativePath + ): TrackedDocument { + const pending = this.idempotencyKeyIndex.get(idempotencyKey); + if (pending === undefined) { + // The pending doc was already promoted to tracked by + // assignDocumentId (resolveIdempotencyKeys) or a previous + // confirmCreate call. Find the tracked doc and update it. + // Try by documentId first, then by scanning for the key. + let existing = this.documentIdIndex.get(documentId); + if (existing?.state !== "tracked") { + // The server may have assigned a different documentId + // (e.g., merge). Scan all tracked docs for the key. + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "tracked" && doc.idempotencyKey === idempotencyKey) { + existing = doc; + break; + } + } + } + if (existing?.state === "tracked") { + // If the server assigned a different documentId than what + // assignDocumentId set, update the index. + if (existing.documentId !== documentId) { + this.documentIdIndex.delete(existing.documentId); + existing.documentId = documentId; + this.documentIdIndex.set(documentId, existing); + } + existing.serverVersion = serverVersion; + existing.localHash = localHash; + existing.remoteRelativePath = remoteRelativePath; + existing.idempotencyKey = undefined; + this.lastSeenUpdateIds.add(serverVersion); + this.saveInTheBackground(); + return existing; + } + // Truly not found — nothing to update + throw new Error( + `No pending document with idempotency key ${idempotencyKey}` + ); + } + + const tracked: TrackedDocument = { + state: "tracked", + relativePath: pending.relativePath, + documentId, + serverVersion, + localHash, + remoteRelativePath + }; + + // Remove pending from indexes + this.idempotencyKeyIndex.delete(idempotencyKey); + + // Update pathIndex (pending -> tracked at same path) + this.pathIndex.set(tracked.relativePath, tracked); + + // Add to documentIdIndex + this.documentIdIndex.set(tracked.documentId, tracked); + + this.lastSeenUpdateIds.add(serverVersion); + + this.saveInTheBackground(); + return tracked; + } + + /** + * Assign a documentId to a pending document (used by resolveIdempotencyKeys). + * Sets serverVersion = 0 as a placeholder — the sync path must treat + * serverVersion === 0 as needing a create retry. + * + * Returns the new TrackedDocument, or undefined if the key is not found. + */ + public assignDocumentId( + idempotencyKey: string, + documentId: DocumentId + ): TrackedDocument | undefined { + const pending = this.idempotencyKeyIndex.get(idempotencyKey); + if (pending === undefined) { + return undefined; + } + + const tracked: TrackedDocument = { + state: "tracked", + relativePath: pending.relativePath, + documentId, + serverVersion: 0, + localHash: "", + remoteRelativePath: pending.relativePath, + idempotencyKey: pending.idempotencyKey + }; + + // Remove pending from indexes + this.idempotencyKeyIndex.delete(idempotencyKey); + + // Update pathIndex + this.pathIndex.set(tracked.relativePath, tracked); + + // Add to documentIdIndex + this.documentIdIndex.set(tracked.documentId, tracked); + + this.saveInTheBackground(); + return tracked; + } + + /** + * Update an existing tracked document's metadata. + */ + public updateTracked( + documentId: DocumentId, + serverVersion: VaultUpdateId, + localHash: string, + remoteRelativePath: RelativePath + ): void { + const doc = this.documentIdIndex.get(documentId); + if (doc?.state !== "tracked") { + throw new Error( + `Tracked document with id ${documentId} not found` + ); + } + + doc.serverVersion = serverVersion; + doc.localHash = localHash; + doc.remoteRelativePath = remoteRelativePath; + + this.lastSeenUpdateIds.add(serverVersion); + + this.saveInTheBackground(); + } + + /** + * Move a document from one path to another. Throws if the target path + * is occupied by a live document. + */ + public move(oldPath: string, newPath: string): void { + const doc = this.pathIndex.get(oldPath); + if (doc === undefined) { + return; + } + + // If another document occupies the target path, it was likely + // orphaned by an earlier displacement that wasn't reconciled. + // Remove it from the path index — reconcileWithDisk will + // re-discover the file if it still exists on disk. + const existingAtNew = this.pathIndex.get(newPath); + if (existingAtNew !== undefined && existingAtNew !== doc) { + this.pathIndex.delete(newPath); + } + + // Remove from old path + this.pathIndex.delete(oldPath); + + // Update the document's relativePath + doc.relativePath = newPath; + + // Insert at new path + this.pathIndex.set(newPath, doc); + + this.saveInTheBackground(); + } + + /** + * Mark a document as deleted locally. + * - Pending: remove entirely (no server-side state to track). + * - Tracked: transition to deleted-locally (keep in documentIdIndex). + */ + public deleteLocally(path: string): void { + const doc = this.pathIndex.get(path); + if (doc === undefined) { + return; + } + + // Remove from pathIndex in all cases + this.pathIndex.delete(path); + + if (doc.state === "pending") { + // Remove from idempotencyKeyIndex too + this.idempotencyKeyIndex.delete(doc.idempotencyKey); + } else if (doc.state === "tracked") { + // Transition to deleted-locally + const deleted: DeletedLocallyDocument = { + state: "deleted-locally", + relativePath: doc.relativePath, + documentId: doc.documentId, + serverVersion: doc.serverVersion, + remoteRelativePath: doc.remoteRelativePath + }; + // Replace in documentIdIndex + this.documentIdIndex.set(deleted.documentId, deleted); + } + + this.saveInTheBackground(); + } + + /** + * Confirm a server-side delete: remove the document entirely. + */ + public confirmDelete(documentId: DocumentId): void { + const doc = this.documentIdIndex.get(documentId); + if (doc === undefined) { + return; + } + + this.documentIdIndex.delete(documentId); + + // Also remove from pathIndex if present (tracked docs are in both) + if (doc.state === "tracked") { + const atPath = this.pathIndex.get(doc.relativePath); + if (atPath === doc) { + this.pathIndex.delete(doc.relativePath); + } + } + + this.saveInTheBackground(); + } + + /** + * Remove a document from all indexes entirely. + */ + public remove(doc: VirtualDocument): void { + switch (doc.state) { + case "pending": { + this.idempotencyKeyIndex.delete(doc.idempotencyKey); + const atPath = this.pathIndex.get(doc.relativePath); + if (atPath === doc) { + this.pathIndex.delete(doc.relativePath); + } + break; + } + case "tracked": { + this.documentIdIndex.delete(doc.documentId); + const atPath = this.pathIndex.get(doc.relativePath); + if (atPath === doc) { + this.pathIndex.delete(doc.relativePath); + } + break; + } + case "deleted-locally": { + this.documentIdIndex.delete(doc.documentId); + break; + } + } + + this.saveInTheBackground(); + } + + /** + * Ensure no other document has the given documentId. If a different + * document already holds it, remove that document and return it (so + * the caller can do optional file-level cleanup). Returns undefined + * if no conflict exists. + */ + public ensureUniqueDocumentId( + documentId: DocumentId, + keeper: VirtualDocument + ): VirtualDocument | undefined { + const existing = this.documentIdIndex.get(documentId); + if (existing !== undefined && existing !== keeper) { + this.remove(existing); + return existing; + } + return undefined; + } + + // ----------------------------------------------------------------------- + // Persistence + // ----------------------------------------------------------------------- + + public async save(): Promise { + const data = this.snapshotForSave(); + const previousSave = this.pendingSave; + const thisSave = (async () => { + await previousSave.catch(() => {}); + await this.saveData(data); + })(); + this.pendingSave = thisSave.catch(() => {}); + return thisSave; + } + + public saveInTheBackground(): void { + this.ensureConsistency(); + void this.save().catch((error: unknown) => { + this.logger.error(`Error saving data: ${error}`); + }); + } + + public reset(): void { + this.pathIndex.clear(); + this.documentIdIndex.clear(); + this.idempotencyKeyIndex.clear(); + this.lastSeenUpdateIds = new CoveredValues(0); + this.saveInTheBackground(); + } + + /** + * Serialize to StoredDatabase format for backward compatibility. + */ + private snapshotForSave(): StoredDatabase { + const documents: StoredDocumentMetadata[] = []; + + // Tracked documents + for (const doc of this.pathIndex.values()) { + if (doc.state === "tracked") { + documents.push({ + relativePath: doc.relativePath, + documentId: doc.documentId, + parentVersionId: doc.serverVersion, + hash: doc.localHash, + remoteRelativePath: doc.remoteRelativePath + }); + } + } + + // Deleted-locally documents (with isDeleted flag) + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "deleted-locally") { + documents.push({ + relativePath: doc.relativePath, + documentId: doc.documentId, + parentVersionId: doc.serverVersion, + hash: "", + isDeleted: true, + remoteRelativePath: doc.remoteRelativePath + }); + } + } + + // Pending documents + const pendingDocuments: StoredPendingDocument[] = []; + for (const doc of this.idempotencyKeyIndex.values()) { + pendingDocuments.push({ + relativePath: doc.relativePath, + idempotencyKey: doc.idempotencyKey, + originalCreationPath: doc.originalCreationPath + }); + } + + return { + documents, + pendingDocuments, + lastSeenUpdateId: this.lastSeenUpdateIds.min + }; + } + + // ----------------------------------------------------------------------- + // Consistency check + // ----------------------------------------------------------------------- + + private ensureConsistency(): void { + // Check that documentIdIndex has no duplicates (by construction it + // shouldn't, since it's a Map keyed by documentId). But verify that + // pathIndex entries with documentIds are consistent. + const seenDocIds = new Set(); + for (const doc of this.pathIndex.values()) { + if (doc.state === "tracked") { + if (seenDocIds.has(doc.documentId)) { + throw new Error( + `Duplicate documentId ${doc.documentId} found in VFS pathIndex` + ); + } + seenDocIds.add(doc.documentId); + } + } + for (const doc of this.documentIdIndex.values()) { + if (doc.state === "deleted-locally") { + if (seenDocIds.has(doc.documentId)) { + throw new Error( + `Duplicate documentId ${doc.documentId} found across live and deleted documents` + ); + } + seenDocIds.add(doc.documentId); + } + } + } + + // ----------------------------------------------------------------------- + // Disk reconciliation + // ----------------------------------------------------------------------- + + /** + * Compare VFS entries against files on disk and produce a pure result + * describing what changed. Does NOT mutate the VFS. + * + * @param diskFiles - List of relative paths that currently exist on disk. + * @param readAndHash - Callback to read a file and return its hash, or + * undefined if the file cannot be read. + */ + public async reconcileWithDisk( + diskFiles: string[], + readAndHash: (path: string) => Promise + ): Promise { + const diskSet = new Set(diskFiles); + + const newFiles: string[] = []; + const modifiedFiles: { path: string; documentId: string }[] = []; + const missingFiles: VirtualDocument[] = []; + const movedFiles: { document: TrackedDocument; newPath: string }[] = []; + + // Collect missing tracked/pending docs (file not on disk) + const missingTracked: TrackedDocument[] = []; + for (const doc of this.pathIndex.values()) { + if (!diskSet.has(doc.relativePath)) { + if (doc.state === "tracked") { + missingTracked.push(doc); + } + missingFiles.push(doc); + } + } + + // For each disk file, classify it + for (const path of diskFiles) { + const doc = this.pathIndex.get(path); + + if (doc === undefined) { + // File on disk, not in VFS — could be new or a move + newFiles.push(path); + } else if (doc.state === "tracked") { + // Check if content changed + const fileHash = await readAndHash(path); + if ( + fileHash !== undefined && + fileHash !== doc.localHash + ) { + modifiedFiles.push({ + path, + documentId: doc.documentId + }); + } + } + // If pending, nothing to reconcile — it's already pending + } + + // Attempt move detection: for each new file, try to match against + // a missing tracked doc by content hash + if (missingTracked.length > 0 && newFiles.length > 0) { + const remainingNew: string[] = []; + + for (const path of newFiles) { + const fileHash = await readAndHash(path); + if (fileHash === undefined || fileHash === EMPTY_HASH) { + remainingNew.push(path); + continue; + } + + // Find a single unique match among missing tracked docs + const matches = missingTracked.filter( + (doc) => doc.localHash === fileHash + ); + + if (matches.length === 1) { + const match = matches[0]; + movedFiles.push({ document: match, newPath: path }); + + // Remove from missingTracked so it can't match again + const idx = missingTracked.indexOf(match); + if (idx !== -1) { + missingTracked.splice(idx, 1); + } + + // Remove from missingFiles too + const missingIdx = missingFiles.indexOf(match); + if (missingIdx !== -1) { + missingFiles.splice(missingIdx, 1); + } + } else { + remainingNew.push(path); + } + } + + // Replace newFiles with the remaining unmatched ones + newFiles.length = 0; + newFiles.push(...remainingNew); + } + + return { newFiles, modifiedFiles, missingFiles, movedFiles }; + } +} diff --git a/frontend/sync-client/src/services/fetch-controller.ts b/frontend/sync-client/src/services/fetch-controller.ts index e30739da..e330e6fc 100644 --- a/frontend/sync-client/src/services/fetch-controller.ts +++ b/frontend/sync-client/src/services/fetch-controller.ts @@ -6,6 +6,8 @@ import { SyncResetError } from "../errors/sync-reset-error"; * Offers a resettable fetch implementation that waits until syncing is enabled * and aborts outstanding requests when a reset is started. */ +const HTTP_REQUEST_TIMEOUT_MS = 30_000; + export class FetchController { private static readonly UNTIL_RESOLUTION = Symbol(); @@ -81,7 +83,17 @@ export class FetchController { } this.isResetting = false; - [this.until, this.resolveUntil, this.rejectUntil] = createPromise(); + // Capture the old resolve before creating a fresh promise, then + // resolve the old one — exactly the same pattern the canFetch + // setter uses. This wakes up any fetches that entered the + // while-loop between startReset and finishReset so they re-check + // the condition. Without this, a canFetch change that occurred + // during the reset (setter skips resolution while isResetting is + // true) would leave fetches blocking on an unresolved promise. + const previousResolve = this.resolveUntil; + [this.until, this.resolveUntil, this.rejectUntil] = + createPromise(); + previousResolve(FetchController.UNTIL_RESOLUTION); } /** @@ -117,7 +129,17 @@ export class FetchController { ? input.clone() : input; - const fetchPromise = fetch(_input, init); + const combinedSignal = init?.signal + ? AbortSignal.any([ + AbortSignal.timeout(HTTP_REQUEST_TIMEOUT_MS), + init.signal + ]) + : AbortSignal.timeout(HTTP_REQUEST_TIMEOUT_MS); + + const fetchPromise = fetch(_input, { + ...init, + signal: combinedSignal + }); // We only want to catch rejections from `this.until` let result: symbol | Response | undefined = undefined; diff --git a/frontend/sync-client/src/services/sync-service.ts b/frontend/sync-client/src/services/sync-service.ts index 458d8efe..ea2efc43 100644 --- a/frontend/sync-client/src/services/sync-service.ts +++ b/frontend/sync-client/src/services/sync-service.ts @@ -49,13 +49,44 @@ export class SyncService { .get("Content-Type") ?.includes("application/json") == true ) { - const result: SerializedError = - (await response.json()) as SerializedError; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion - return SyncService.formatError(result); + try { + const result: SerializedError = + (await response.json()) as SerializedError; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + return SyncService.formatError(result); + } catch { + return `HTTP ${response.status}: ${response.statusText} (failed to parse error response body)`; + } } return `HTTP ${response.status}: ${response.statusText}`; } + /** + * Safely parse JSON from a response body. If parsing fails (e.g., malformed + * JSON from the server), throws an HttpClientError with status 0 so that + * retryForever does not retry indefinitely. + */ + private static async parseJsonResponse( + response: Response + ): Promise { + try { + return (await response.json()) as T; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + } catch (error) { + // Timeout and abort errors are transient — let them propagate + // so retryForever can retry. Only wrap genuine parse failures + // (malformed JSON) as HttpClientError to prevent infinite retries. + if ( + error instanceof Error && + (error.name === "TimeoutError" || error.name === "AbortError") + ) { + throw error; + } + throw new HttpClientError( + 0, + `Failed to parse JSON response: ${error}` + ); + } + } + private static formatError(error: SerializedError): string { let result = error.message; if (error.causes.length > 0) { @@ -117,7 +148,9 @@ export class SyncService { } const result: DocumentUpdateResponse = - (await response.json()) as DocumentUpdateResponse; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug(`Created document ${JSON.stringify(result)}`); @@ -164,7 +197,9 @@ export class SyncService { } const result: DocumentUpdateResponse = - (await response.json()) as DocumentUpdateResponse; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug( `Updated document ${JSON.stringify(result)} with id ${result.documentId @@ -215,7 +250,9 @@ export class SyncService { } const result: DocumentUpdateResponse = - (await response.json()) as DocumentUpdateResponse; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug( `Updated document ${JSON.stringify(result)} with id ${result.documentId @@ -234,9 +271,7 @@ export class SyncService { relativePath: RelativePath; }): Promise { return this.retryForever(async () => { - const request: DeleteDocumentVersion = { - relativePath - }; + const request: DeleteDocumentVersion = {}; this.logger.debug( `Delete document with id ${documentId} and relative path ${relativePath}` @@ -259,7 +294,9 @@ export class SyncService { } const result: DocumentVersionWithoutContent = - (await response.json()) as DocumentVersionWithoutContent; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug( `Deleted document ${relativePath} with id ${documentId}` @@ -292,7 +329,9 @@ export class SyncService { } const result: DocumentVersion = - (await response.json()) as DocumentVersion; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug(`Got document ${JSON.stringify(result)}`); @@ -361,7 +400,9 @@ export class SyncService { } const result: FetchLatestDocumentsResponse = - (await response.json()) as FetchLatestDocumentsResponse; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + await SyncService.parseJsonResponse( + response + ); this.logger.debug( `Got ${result.latestDocuments.length} document metadata` @@ -389,15 +430,16 @@ export class SyncService { ); if (!response.ok) { - throw new Error( - `Failed to resolve idempotency keys: ${await SyncService.errorFromResponse( - response - )}` + await SyncService.throwHttpError( + response, + "Failed to resolve idempotency keys" ); } - const result: { resolved: Record } = - (await response.json()) as { resolved: Record }; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + const result = + await SyncService.parseJsonResponse<{ + resolved: Record; + }>(response); const resolved = new Map( Object.entries(result.resolved) @@ -425,7 +467,8 @@ export class SyncService { ); } - const result: PingResponse = (await response.json()) as PingResponse; // eslint-disable-line @typescript-eslint/no-unsafe-type-assertion + const result: PingResponse = + await SyncService.parseJsonResponse(response); this.logger.debug( `Pinged server, got response: ${JSON.stringify(result)}` @@ -457,6 +500,7 @@ export class SyncService { } private async retryForever(fn: () => Promise): Promise { + let attempt = 0; // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition while (true) { try { @@ -473,12 +517,19 @@ export class SyncService { throw e; } - const retryInterval = + attempt++; + const baseDelay = this.settings.getSettings().networkRetryIntervalMs; - this.logger.error( - `Failed network call (${e}), retrying in ${retryInterval}ms` + const exponentialDelay = Math.min( + baseDelay * Math.pow(2, Math.min(attempt - 1, 5)), + 30000 ); - await sleep(retryInterval); + const jitter = Math.random() * exponentialDelay * 0.5; + const delay = exponentialDelay + jitter; + this.logger.error( + `Failed network call (${e}), retrying in ${Math.round(delay)}ms (attempt ${attempt})` + ); + await sleep(delay); } } } diff --git a/frontend/sync-client/src/services/types/DeleteDocumentVersion.ts b/frontend/sync-client/src/services/types/DeleteDocumentVersion.ts index 5d4bad98..f160406f 100644 --- a/frontend/sync-client/src/services/types/DeleteDocumentVersion.ts +++ b/frontend/sync-client/src/services/types/DeleteDocumentVersion.ts @@ -1,3 +1,3 @@ // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually. -export interface DeleteDocumentVersion { relativePath: string, } +export type DeleteDocumentVersion = Record; diff --git a/frontend/sync-client/src/services/types/WebSocketClientMessage.ts b/frontend/sync-client/src/services/types/WebSocketClientMessage.ts index 5765a0d0..3dff01aa 100644 --- a/frontend/sync-client/src/services/types/WebSocketClientMessage.ts +++ b/frontend/sync-client/src/services/types/WebSocketClientMessage.ts @@ -2,4 +2,4 @@ import type { CursorPositionFromClient } from "./CursorPositionFromClient"; import type { WebSocketHandshake } from "./WebSocketHandshake"; -export type WebSocketClientMessage = { "type": "handshake" } & WebSocketHandshake | { "type": "cursorPositions" } & CursorPositionFromClient; +export type WebSocketClientMessage = { "type": "handshake" } & WebSocketHandshake | { "type": "cursorPositions" } & CursorPositionFromClient | { "type": "ping" }; diff --git a/frontend/sync-client/src/services/websocket-manager.ts b/frontend/sync-client/src/services/websocket-manager.ts index 4f06d0b9..d84620c2 100644 --- a/frontend/sync-client/src/services/websocket-manager.ts +++ b/frontend/sync-client/src/services/websocket-manager.ts @@ -34,6 +34,14 @@ export class WebSocketManager { private readonly outstandingPromises: Promise[] = []; + /** + * Chains WebSocket message processing so only one message is handled + * at a time. Without this, a burst of messages would create many + * concurrent sync operations (each calling scheduleSyncForOfflineChanges + * and processing documents in parallel). + */ + private messageProcessingChain: Promise = Promise.resolve(); + private webSocket: WebSocket | undefined; public constructor( @@ -102,6 +110,11 @@ export class WebSocketManager { } } + // Wait for any already-enqueued message handlers to finish. + // The isStopped guard in onmessage prevents NEW messages from + // being enqueued, but handlers that were chained before stop() + // set the flag may still be in flight. + await this.messageProcessingChain; await this.waitUntilFinished(); } @@ -216,29 +229,75 @@ export class WebSocketManager { }; this.webSocket.onmessage = (event): void => { + // Discard messages received after stop() has been called. + // Without this guard, messages arriving between close() + // and the onclose event would be enqueued into + // messageProcessingChain and execute after stop() returns. + if (this.isStopped) { + return; + } + try { // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion const message = JSON.parse( event.data ) as WebSocketServerMessage; - // Track the message handling promise - const messageHandlingPromise = this.handleWebSocketMessage( - message - ) + // Cursor updates are pure reads (update an in-memory map) — + // handle immediately without blocking behind vault update + // processing. This avoids cursor latency during large syncs. + if (message.type === "cursorPositions") { + this.logger.debug( + `Received cursor positions for ${JSON.stringify(message.clients)}` + ); + const cursorPromise = + this.onRemoteCursorsUpdateReceived + .triggerAsync(message.clients) + .catch((error: unknown) => { + this.logger.error( + `Error handling cursor update: ${String(error)}` + ); + }); + // Track for waitUntilFinished / hasOutstandingWork + this.outstandingPromises.push(cursorPromise); + void cursorPromise.finally(() => { + removeFromArray( + this.outstandingPromises, + cursorPromise + ); + }); + return; + } + + // Vault updates require serialization: each waits for the + // previous one to finish. This provides back-pressure so a + // burst of WebSocket messages doesn't create unbounded + // concurrent sync operations. + // + // Read-reassign safety: we read messageProcessingChain, + // chain a .then() onto it, and assign the resulting promise + // back. This is safe because JavaScript is single-threaded: + // no other code can run between the read and the assignment. + // The next onmessage invocation will see the updated chain + // and append after this handler, preserving FIFO order. + this.messageProcessingChain = this.messageProcessingChain + .then(async () => this.handleWebSocketMessage(message)) .catch((error: unknown) => { this.logger.error( `Error handling WebSocket message: ${String(error)}` ); - }) - .finally(() => { - removeFromArray( - this.outstandingPromises, - messageHandlingPromise - ); }); - void this.outstandingPromises.push(messageHandlingPromise); // ignore the returned promise + const messageHandlingPromise = this.messageProcessingChain; + + // Track the promise for waitUntilFinished / hasOutstandingWork + this.outstandingPromises.push(messageHandlingPromise); + void messageHandlingPromise.finally(() => { + removeFromArray( + this.outstandingPromises, + messageHandlingPromise + ); + }); } catch (error) { this.logger.error( `Error parsing WebSocket message: ${String(error)}` @@ -283,17 +342,8 @@ export class WebSocketManager { ): Promise { if (message.type === "vaultUpdate") { await this.onRemoteVaultUpdateReceived.triggerAsync(message); - - // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition - } else if (message.type === "cursorPositions") { - this.logger.debug( - `Received cursor positions for ${JSON.stringify(message.clients)}` - ); - - await this.onRemoteCursorsUpdateReceived.triggerAsync( - message.clients - ); } else { + // Cursor messages are handled inline in onmessage (not chained) this.logger.warn( `Received unknown message type: ${JSON.stringify(message)}` ); diff --git a/frontend/sync-client/src/sync-client.ts b/frontend/sync-client/src/sync-client.ts index 3edd9a70..80235846 100644 --- a/frontend/sync-client/src/sync-client.ts +++ b/frontend/sync-client/src/sync-client.ts @@ -3,7 +3,6 @@ import type { HistoryEntry, HistoryStats } from "./tracing/sync-history"; import { SyncHistory } from "./tracing/sync-history"; import { Logger, LogLevel, LogLine } from "./tracing/logger"; import type { RelativePath, StoredDatabase } from "./persistence/database"; -import { Database } from "./persistence/database"; import * as Sentry from "@sentry/browser"; import type { SyncSettings } from "./persistence/settings"; import { DEFAULT_SETTINGS, Settings } from "./persistence/settings"; @@ -12,7 +11,8 @@ import { Syncer } from "./sync-operations/syncer"; import type { FileSystemOperations } from "./file-operations/filesystem-operations"; import { FileOperations } from "./file-operations/file-operations"; import { FetchController } from "./services/fetch-controller"; -import { UnrestrictedSyncer } from "./sync-operations/unrestricted-syncer"; +import { VirtualFilesystem } from "./persistence/vfs"; +import type { SyncDeps } from "./sync-operations/sync-actions"; import { rateLimit } from "./utils/rate-limit"; import type { NetworkConnectionStatus } from "./types/network-connection-status"; import { DocumentSyncStatus } from "./types/document-sync-status"; @@ -25,7 +25,6 @@ import type { MaybeOutdatedClientCursors } from "./types/maybe-outdated-client-c import { FileChangeNotifier } from "./sync-operations/file-change-notifier"; import { FixedSizeDocumentCache } from "./utils/data-structures/fix-sized-cache"; import { setUpTelemetry } from "./utils/set-up-telemetry"; -import { DIFF_CACHE_SIZE_MB } from "./consts"; import { ServerConfig } from "./services/server-config"; import type { EventListeners } from "./utils/data-structures/event-listeners"; @@ -41,7 +40,7 @@ export class SyncClient { public readonly logger: Logger, private readonly history: SyncHistory, private readonly settings: Settings, - private readonly database: Database, + private readonly vfs: VirtualFilesystem, private readonly syncer: Syncer, private readonly webSocketManager: WebSocketManager, private readonly fetchController: FetchController, @@ -59,7 +58,7 @@ export class SyncClient { ) { } public get documentCount(): number { - return this.database.length; + return this.vfs.length; } public get isWebSocketConnected(): boolean { @@ -148,7 +147,7 @@ export class SyncClient { () => settings.getSettings().minimumSaveIntervalMs ); - const database = new Database( + const vfs = new VirtualFilesystem( logger, state.database, async (data): Promise => { @@ -174,25 +173,26 @@ export class SyncClient { const fileOperations = new FileOperations( logger, - database, + vfs, fs, serverConfig, nativeLineEndings ); const contentCache = new FixedSizeDocumentCache( - 1024 * 1024 * DIFF_CACHE_SIZE_MB + 1024 * 1024 * settings.getSettings().diffCacheSizeMB ); - const unrestrictedSyncer = new UnrestrictedSyncer( + + const syncDeps: SyncDeps = { logger, - database, - settings, + vfs, syncService, - fileOperations, + operations: fileOperations, history, contentCache, - serverConfig - ); + serverConfig, + settings + }; const webSocketManager = new WebSocketManager( logger, @@ -203,17 +203,17 @@ export class SyncClient { const syncer = new Syncer( deviceId, logger, - database, + vfs, settings, webSocketManager, fileOperations, - unrestrictedSyncer + syncDeps ); const fileChangeNotifier = new FileChangeNotifier(); const cursorTracker = new CursorTracker( logger, - database, + vfs, webSocketManager, fileOperations, fileChangeNotifier @@ -222,7 +222,7 @@ export class SyncClient { logger, history, settings, - database, + vfs, syncer, webSocketManager, fetchController, @@ -333,8 +333,8 @@ export class SyncClient { // clear all local state this.logger.info("Resetting SyncClient's local state"); - this.database.reset(); - await this.database.save(); // ensure the new database reads as empty + this.vfs.reset(); + await this.vfs.save(); // ensure the new database reads as empty this.resetInMemoryState(); this.hasFinishedOfflineSync = false; this.serverConfig.reset(); @@ -433,14 +433,34 @@ export class SyncClient { while (true) { iteration++; this.logger.info(`waitUntilFinished: iteration ${iteration}`); - await this.webSocketManager.waitUntilFinished(); await this.syncer.waitUntilFinished(); + await this.webSocketManager.waitUntilFinished(); // Check if anything new arrived while we were waiting - if (!this.webSocketManager.hasOutstandingWork()) { + if ( + !this.webSocketManager.hasOutstandingWork() && + !this.syncer.hasOutstandingWork() + ) { break; } } - await this.database.save(); // flush all changes to disk + + // Run a final filesystem scan to catch any operations that were + // silently dropped (e.g., due to mutable document references + // pointing to a moved path after concurrent renames). + await this.syncer.runFinalConsistencyCheck(); + // Wait for any work produced by the final scan + while (true) { + await this.syncer.waitUntilFinished(); + await this.webSocketManager.waitUntilFinished(); + if ( + !this.webSocketManager.hasOutstandingWork() && + !this.syncer.hasOutstandingWork() + ) { + break; + } + } + + await this.vfs.save(); // flush all changes to disk } /** @@ -467,6 +487,8 @@ export class SyncClient { this.resetInMemoryState(); // Clean up event listeners to prevent memory leaks + this.syncer.destroy(); + this.cursorTracker.destroy(); this.eventUnsubscribers.forEach((unsubscribe) => { unsubscribe(); }); @@ -491,10 +513,16 @@ export class SyncClient { } /** - * Hard pause: aborts all in-flight HTTP operations via FetchController reset. - * Used when the SyncClient is being destroyed or fully reset (connection - * settings changed). This is the nuclear option — every outstanding fetch - * is rejected with SyncResetError so the queue drains immediately. + * Pause syncing: aborts all in-flight HTTP operations via FetchController + * reset, stops the WebSocket, and waits for the sync queue to drain. + * + * Used by both destroy/reset (connection settings changed) and when the + * user toggles sync off. In both cases, `fetchController.startReset()` is + * needed because the settings-change listener may have already set + * `canFetch = false`, which would cause controlled fetches to block + * indefinitely. The WebSocket close handler triggers `syncer.reset()` + * automatically via the `onWebSocketStatusChanged` listener, so an + * explicit `syncer.reset()` call is not needed here. */ private async pause(): Promise { this.hasFinishedOfflineSync = false; @@ -504,29 +532,15 @@ export class SyncClient { await this.waitUntilFinished(); } catch (e) { // SyncResetError is expected here — we just called startReset() - // which rejects in-flight fetches. Only re-throw non-reset errors - // (after ensuring the FetchController is left in a usable state). - this.fetchController.finishReset(); + // which rejects in-flight fetches. Only re-throw non-reset errors. if (!(e instanceof SyncResetError)) { throw e; } + } finally { + this.fetchController.finishReset(); } } - /** - * Soft pause: stops the WebSocket and clears the sync queue, but lets - * in-flight HTTP operations complete naturally. Used when the user toggles - * sync off — we don't want to abort creates/updates that are mid-flight - * because they'd just be re-queued on re-enable, potentially leading to - * an infinite retry loop with flaky connections. - */ - private async softPause(): Promise { - this.hasFinishedOfflineSync = false; - await this.webSocketManager.stop(); - this.syncer.reset(); - await this.waitUntilFinished(); - } - private resetInMemoryState(): void { this.history.reset(); this.contentCache.reset(); @@ -553,7 +567,7 @@ export class SyncClient { if (newSettings.isSyncEnabled) { await this.startSyncing(); } else { - await this.softPause(); + await this.pause(); } } diff --git a/frontend/sync-client/src/sync-operations/cursor-tracker.ts b/frontend/sync-client/src/sync-operations/cursor-tracker.ts index abbfc973..9053955b 100644 --- a/frontend/sync-client/src/sync-operations/cursor-tracker.ts +++ b/frontend/sync-client/src/sync-operations/cursor-tracker.ts @@ -1,5 +1,6 @@ import type { FileOperations } from "../file-operations/file-operations"; -import type { Database, RelativePath } from "../persistence/database"; +import type { RelativePath } from "../persistence/database"; +import type { VirtualFilesystem } from "../persistence/vfs"; import type { ClientCursors } from "../services/types/ClientCursors"; import type { CursorSpan } from "../services/types/CursorSpan"; import type { DocumentWithCursors } from "../services/types/DocumentWithCursors"; @@ -24,6 +25,7 @@ export class CursorTracker { >(); private readonly updateLock: Lock; + private readonly eventUnsubscribers: (() => void)[] = []; private knownRemoteCursors: (ClientCursors & { upToDateness: DocumentUpToDateness; @@ -35,61 +37,68 @@ export class CursorTracker { public constructor( private readonly logger: Logger, - private readonly database: Database, + private readonly vfs: VirtualFilesystem, private readonly webSocketManager: WebSocketManager, private readonly fileOperations: FileOperations, private readonly fileChangeNotifier: FileChangeNotifier ) { this.updateLock = new Lock(CursorTracker.name, logger); - this.webSocketManager.onRemoteCursorsUpdateReceived.add( - async (clientCursors) => { - await this.updateLock.withLock(async () => { - // The latest message will contain all active clients, so we can delete the ones - // from the local list which are no longer active. - const allIds = new Set( - clientCursors.map((c) => c.deviceId) - ); - const updatedKnownRemoteCursors = - this.knownRemoteCursors.filter((c) => - allIds.has(c.deviceId) + this.eventUnsubscribers.push( + this.webSocketManager.onRemoteCursorsUpdateReceived.add( + async (clientCursors) => { + await this.updateLock.withLock(async () => { + // The latest message will contain all active clients, so we can delete the ones + // from the local list which are no longer active. + const allIds = new Set( + clientCursors.map((c) => c.deviceId) ); + const updatedKnownRemoteCursors = + this.knownRemoteCursors.filter((c) => + allIds.has(c.deviceId) + ); - for (const cursor of clientCursors.filter((client) => - client.documentsWithCursors.every( - (doc) => doc.vault_update_id != null - ) - )) { - updatedKnownRemoteCursors.push({ - ...cursor, - upToDateness: - await this.getDocumentsUpToDateness(cursor) - }); - } + for (const cursor of clientCursors.filter((client) => + client.documentsWithCursors.every( + (doc) => doc.vault_update_id != null + ) + )) { + updatedKnownRemoteCursors.push({ + ...cursor, + upToDateness: + await this.getDocumentsUpToDateness(cursor) + }); + } - this.knownRemoteCursors = updatedKnownRemoteCursors; - }); + this.knownRemoteCursors = updatedKnownRemoteCursors; + }); - this.onRemoteCursorsUpdated.trigger( - this.getRelevantAndPruneKnownClientCursors() - ); - } + this.onRemoteCursorsUpdated.trigger( + this.getRelevantAndPruneKnownClientCursors() + ); + } + ) ); - this.fileChangeNotifier.onFileChanged.add(async (relativePath) => - this.updateLock.withLock(async () => { - for (const clientCursor of this.knownRemoteCursors) { - if ( - clientCursor.documentsWithCursors.some( - (document) => - document.relative_path === relativePath - ) - ) { - clientCursor.upToDateness = - await this.getDocumentsUpToDateness(clientCursor); - } - } - }) + this.eventUnsubscribers.push( + this.fileChangeNotifier.onFileChanged.add( + async (relativePath) => + this.updateLock.withLock(async () => { + for (const clientCursor of this.knownRemoteCursors) { + if ( + clientCursor.documentsWithCursors.some( + (document) => + document.relative_path === relativePath + ) + ) { + clientCursor.upToDateness = + await this.getDocumentsUpToDateness( + clientCursor + ); + } + } + }) + ) ); } @@ -104,21 +113,20 @@ export class CursorTracker { for (const [relativePath, cursors] of Object.entries( documentToCursors )) { - const record = - this.database.getLatestDocumentByRelativePath(relativePath); + const doc = this.vfs.getByPath(relativePath); - if (!record) { + if (!doc) { continue; // Let's wait for the file to be created before sending cursors } - if (!record.metadata) { - continue; // this is a new document, no need to sync the cursors + if (doc.state !== "tracked") { + continue; // this is a pending document, no need to sync the cursors } documentsWithCursors.push({ relative_path: relativePath, - document_id: record.metadata.documentId, - vault_update_id: record.metadata.parentVersionId, + document_id: doc.documentId, + vault_update_id: doc.serverVersion, cursors: cursors.map(({ start, end }) => ({ start: Math.min(start, end), end: Math.max(start, end) @@ -139,10 +147,10 @@ export class CursorTracker { const readContent = await this.fileOperations.read( doc.relative_path ); - const record = this.database.getLatestDocumentByRelativePath( - doc.relative_path - ); - if (record?.metadata?.hash !== hash(readContent)) { + const vfsDoc = this.vfs.getByPath(doc.relative_path); + const storedHash = + vfsDoc?.state === "tracked" ? vfsDoc.localHash : undefined; + if (storedHash !== hash(readContent)) { doc.vault_update_id = null; } } @@ -166,6 +174,12 @@ export class CursorTracker { this.updateLock.reset(); } + public destroy(): void { + for (const unsubscribe of this.eventUnsubscribers) { + unsubscribe(); + } + } + private getRelevantAndPruneKnownClientCursors(): MaybeOutdatedClientCursors[] { const result: MaybeOutdatedClientCursors[] = []; const included = new Set(); @@ -227,24 +241,19 @@ export class CursorTracker { private async getDocumentUpToDateness( document: DocumentWithCursors ): Promise { - const record = this.database.getLatestDocumentByRelativePath( - document.relative_path - ); + const vfsDoc = this.vfs.getByPath(document.relative_path); - if (!record) { + if (!vfsDoc) { // the document of the cursor must be from the future return DocumentUpToDateness.Later; } - if ( - (record.metadata?.parentVersionId ?? 0) < - (document.vault_update_id ?? 0) - ) { + const serverVersion = + vfsDoc.state === "tracked" ? vfsDoc.serverVersion : 0; + + if (serverVersion < (document.vault_update_id ?? 0)) { return DocumentUpToDateness.Later; - } else if ( - (document.vault_update_id ?? 0) < - (record.metadata?.parentVersionId ?? 0) - ) { + } else if ((document.vault_update_id ?? 0) < serverVersion) { // the document of the cursor must be from the past return DocumentUpToDateness.Prior; } @@ -253,9 +262,11 @@ export class CursorTracker { document.relative_path ); - return this.database.getLatestDocumentByRelativePath( - document.relative_path - )?.metadata?.hash === hash(currentContent) + const freshDoc = this.vfs.getByPath(document.relative_path); + const storedHash = + freshDoc?.state === "tracked" ? freshDoc.localHash : undefined; + + return storedHash === hash(currentContent) ? DocumentUpToDateness.UpToDate : DocumentUpToDateness.Prior; } diff --git a/frontend/sync-client/src/sync-operations/sync-actions.ts b/frontend/sync-client/src/sync-operations/sync-actions.ts new file mode 100644 index 00000000..ece89702 --- /dev/null +++ b/frontend/sync-client/src/sync-operations/sync-actions.ts @@ -0,0 +1,1182 @@ +import type { + VirtualFilesystem, + TrackedDocument, + PendingDocument, + DeletedLocallyDocument, + VirtualDocument +} from "../persistence/vfs"; +import type { SyncService } from "../services/sync-service"; +import type { FileOperations } from "../file-operations/file-operations"; +import type { Logger } from "../tracing/logger"; +import type { + CommonHistoryEntry, + SyncCreateDetails, + SyncDeleteDetails, + SyncDetails, + SyncHistory, + SyncMovedDetails, + SyncUpdateDetails +} from "../tracing/sync-history"; +import { SyncStatus, SyncType } from "../tracing/sync-history"; +import type { FixedSizeDocumentCache } from "../utils/data-structures/fix-sized-cache"; +import type { ServerConfig } from "../services/server-config"; +import type { Settings } from "../persistence/settings"; +import type { DocumentVersionWithoutContent } from "../services/types/DocumentVersionWithoutContent"; +import type { DocumentVersion } from "../services/types/DocumentVersion"; +import type { DocumentUpdateResponse } from "../services/types/DocumentUpdateResponse"; +import type { RelativePath } from "../persistence/database"; + +import { diff } from "reconcile-text"; +import { EMPTY_HASH, hash } from "../utils/hash"; +import { base64ToBytes } from "byte-base64"; +import { FileNotFoundError } from "../errors/file-not-found-error"; +import { HttpClientError } from "../errors/http-client-error"; +import { SyncResetError } from "../errors/sync-reset-error"; +import { globsToRegexes } from "../utils/globs-to-regexes"; +import { isFileTypeMergable } from "../utils/is-file-type-mergable"; +import { isBinary } from "../utils/is-binary"; +import { decodeText } from "../utils/decode-text"; + +// --------------------------------------------------------------------------- +// Dependency bag passed to every action +// --------------------------------------------------------------------------- + +export interface SyncDeps { + logger: Logger; + vfs: VirtualFilesystem; + syncService: SyncService; + operations: FileOperations; + history: SyncHistory; + contentCache: FixedSizeDocumentCache; + serverConfig: ServerConfig; + settings: Settings; +} + +// --------------------------------------------------------------------------- +// Deconflict‑suffix helpers (extracted from UnrestrictedSyncer) +// --------------------------------------------------------------------------- + +const DECONFLICT_SUFFIX = / \(\d+\)$/; + +/** + * Check if `candidate` is a path-deconflicted variant of `basePath`. + * e.g., "file (2).bin" is a variant of "file.bin", but "doc.bin" is not. + */ +export function isDeconflictedVariant( + candidate: string, + basePath: string +): boolean { + const stripExt = (p: string): [string, string] => { + const lastDot = p.lastIndexOf("."); + const lastSlash = p.lastIndexOf("/"); + if (lastDot > lastSlash + 1) { + return [p.substring(0, lastDot), p.substring(lastDot)]; + } + return [p, ""]; + }; + const [candidateStem, candidateExt] = stripExt(candidate); + const [baseStem, baseExt] = stripExt(basePath); + if (candidateExt !== baseExt) return false; + const strippedStem = candidateStem.replace(DECONFLICT_SUFFIX, ""); + return strippedStem === baseStem; +} + +// --------------------------------------------------------------------------- +// Shared helpers +// --------------------------------------------------------------------------- + +function getHistoryEntryForSkippedOversizedFile( + sizeInBytes: number, + relativePath: RelativePath, + settings: Settings +): CommonHistoryEntry | undefined { + const { maxFileSizeMB } = settings.getSettings(); + const maxFileSizeBytes = maxFileSizeMB * 1024 * 1024; + if (sizeInBytes > maxFileSizeBytes) { + const sizeInMB = (sizeInBytes / 1024 / 1024).toFixed(1); + return { + status: SyncStatus.SKIPPED, + details: { + type: SyncType.SKIPPED, + relativePath + }, + message: `File size of ${sizeInMB} MB exceeds the maximum file size limit of ${maxFileSizeMB} MB` + }; + } +} + +async function updateCache( + contentCache: FixedSizeDocumentCache, + serverConfig: ServerConfig, + updateId: number, + contentBytes: Uint8Array, + filePath: RelativePath +): Promise { + if ( + isFileTypeMergable( + filePath, + (await serverConfig.getConfig()).mergeableFileExtensions + ) && + !isBinary(contentBytes) + ) { + contentCache.put(updateId, contentBytes); + } +} + +// Cached ignore-pattern regexes, rebuilt when settings change. +let cachedIgnorePatterns: RegExp[] | undefined; +let cachedSettingsRef: Settings | undefined; + +function getIgnorePatterns(deps: SyncDeps): RegExp[] { + if (cachedSettingsRef !== deps.settings || cachedIgnorePatterns === undefined) { + cachedIgnorePatterns = globsToRegexes( + deps.settings.getSettings().ignorePatterns, + deps.logger + ); + cachedSettingsRef = deps.settings; + } + return cachedIgnorePatterns; +} + +// --------------------------------------------------------------------------- +// executeSync wrapper (error handling, ignore patterns, size checks) +// --------------------------------------------------------------------------- + +async function executeSync( + deps: SyncDeps, + details: SyncDetails, + fn: () => Promise +): Promise { + if (!deps.settings.getSettings().isSyncEnabled) { + deps.logger.info( + `Skipping sync operation for file '${details.relativePath}' because sync is disabled` + ); + return; + } + + for (const pattern of getIgnorePatterns(deps)) { + if (pattern.test(details.relativePath)) { + deps.logger.debug( + `File '${details.relativePath}' is ignored by the ignore pattern: ${pattern}` + ); + return; + } + } + + try { + // Only check the size of files which already exist locally. + if (await deps.operations.exists(details.relativePath)) { + const sizeInBytes = await deps.operations.getFileSize( + details.relativePath + ); + const historyEntryForSkippedOversizedFile = + getHistoryEntryForSkippedOversizedFile( + sizeInBytes, + details.relativePath, + deps.settings + ); + if (historyEntryForSkippedOversizedFile !== undefined) { + deps.history.addHistoryEntry( + historyEntryForSkippedOversizedFile + ); + return; + } + } + + return await fn(); + } catch (e) { + if (e instanceof FileNotFoundError) { + deps.logger.info( + `Skiping file '${details.relativePath}' because it no longer exists when trying to ${details.type.toLocaleLowerCase()} it` + ); + return; + } + if (e instanceof SyncResetError) { + deps.logger.info( + `Interrupting sync operation because of a reset` + ); + return; + } else { + deps.history.addHistoryEntry({ + status: SyncStatus.ERROR, + details, + message: `Failed to sync file '${details.relativePath}' because of ${e} when trying to ${details.type.toLocaleLowerCase()} it` + }); + throw e; + } + } +} + +// --------------------------------------------------------------------------- +// applyRemoteDeleteLocally +// --------------------------------------------------------------------------- + +async function applyRemoteDeleteLocally( + deps: SyncDeps, + doc: VirtualDocument, + response: DocumentVersion | DocumentUpdateResponse +): Promise { + await deps.operations.delete(doc.relativePath); + + // deleteLocally transitions tracked → deleted-locally (new object in + // documentIdIndex). confirmDelete then removes it entirely. No need + // to call updateTracked — the delete already captures the server state. + deps.vfs.deleteLocally(doc.relativePath); + + if (doc.state === "tracked") { + deps.vfs.confirmDelete(response.documentId); + } + // For pending or deleted-locally, deleteLocally already handled removal + + deps.vfs.addSeenUpdateId(response.vaultUpdateId); +} + +// --------------------------------------------------------------------------- +// applyServerResponse (extracted from handleMaybeMergingResponse) +// --------------------------------------------------------------------------- + +export async function applyServerResponse( + deps: SyncDeps, + doc: PendingDocument | TrackedDocument, + response: DocumentVersion | DocumentUpdateResponse, + contentHash: string, + originalRelativePath: string, + originalContentBytes: Uint8Array, + isCreate?: boolean +): Promise { + // Derive at entry before any metadata mutation. True when + // resolveIdempotencyKeys assigned a documentId (serverVersion 0) + // and we retried the create — the server returned the existing version. + const isIdempotentCreateReturn = + isCreate === true && + doc.state === "tracked" && + doc.serverVersion === 0; + + // Check if the document was deleted locally + const currentDoc = deps.vfs.getByPath(doc.relativePath); + if (currentDoc === undefined) { + // Path was removed from pathIndex (deleted locally) + deps.logger.info( + `Document ${doc.relativePath} has been deleted before we could finish updating it` + ); + // For pending docs deleted during create: assign metadata so the + // pending delete can inform the server + if (doc.state === "pending") { + const conflict = deps.vfs.getByDocumentId(response.documentId); + if (conflict !== undefined && conflict !== doc) { + deps.vfs.remove(doc); + } else { + // Transition to tracked so delete can be sent to server + deps.vfs.confirmCreate( + doc.idempotencyKey, + response.documentId, + response.vaultUpdateId, + contentHash, + response.relativePath + ); + // Then delete locally + deps.vfs.deleteLocally(doc.relativePath); + } + } + deps.vfs.addSeenUpdateId(response.vaultUpdateId); + return; + } + + const currentServerVersion = + doc.state === "tracked" ? doc.serverVersion : 0; + + if (currentServerVersion > response.vaultUpdateId) { + deps.logger.debug( + `Document ${doc.relativePath} is already more up to date than the fetched version` + ); + deps.vfs.addSeenUpdateId(response.vaultUpdateId); + return; + } + + if (response.isDeleted) { + return applyRemoteDeleteLocally(deps, doc, response); + } + + let actualPath = doc.relativePath; + + if (isCreate) { + // The server returns a merging update for a document ID that + // may already exist locally (at another path). Remove the stale + // database record so no two records share the same documentId. + const staleDoc = deps.vfs.ensureUniqueDocumentId( + response.documentId, + doc + ); + if (staleDoc !== undefined) { + deps.logger.info( + `Removed stale database record at ${staleDoc.relativePath} — ` + + `server merged documentId ${response.documentId} into ${doc.relativePath}. ` + + `File left on disk for next sync cycle.` + ); + } + } + + // A document's documentId should never change once assigned. + if ( + doc.state === "tracked" && + doc.documentId !== response.documentId + ) { + deps.logger.info( + `Document ${doc.relativePath} already has documentId ${doc.documentId}, ` + + `but response has documentId ${response.documentId}. Ignoring response to prevent documentId corruption.` + ); + deps.vfs.addSeenUpdateId(response.vaultUpdateId); + return; + } + + // Handle path change from server (can't happen on creation path since + // merging responses only occur when a document already exists remotely) + if (response.relativePath !== originalRelativePath) { + if (isIdempotentCreateReturn) { + // The server knows this document at its original creation path, + // but the user renamed the file locally while offline. Don't + // revert the rename — keep the local path and let the next sync + // cycle push the rename to the server. + deps.logger.info( + `Idempotent create return: keeping local path ${doc.relativePath} ` + + `instead of reverting to server path ${response.relativePath}` + ); + } else { + actualPath = response.relativePath; + // Update remote relative path + if (doc.state === "tracked") { + doc.remoteRelativePath = response.relativePath; + } + await deps.operations.move( + doc.relativePath, + response.relativePath + ); // this can throw FileNotFoundError + + // Update the VFS path to match the new location + deps.vfs.move(doc.relativePath, response.relativePath); + } + } + + if (!("type" in response) || response.type === "MergingUpdate") { + const responseBytes = base64ToBytes(response.contentBase64); + + // Write file BEFORE updating metadata so that if the write fails, + // metadata doesn't point to a version whose content was never written. + await deps.operations.write( + actualPath, + originalContentBytes, + responseBytes + ); + + // Re-read and re-hash after write because the 3-way merge in + // operations.write() may produce content different from responseBytes. + const actualContent = await deps.operations.read(actualPath); + const actualHash = hash(actualContent); + + // Transition pending -> tracked or update tracked metadata + if (doc.state === "pending") { + deps.vfs.confirmCreate( + doc.idempotencyKey, + response.documentId, + response.vaultUpdateId, + actualHash, + response.relativePath + ); + } else { + deps.vfs.updateTracked( + response.documentId, + response.vaultUpdateId, + actualHash, + response.relativePath + ); + } + + // Cache the SERVER's content (responseBytes), not the local + // content (actualContent). + await updateCache( + deps.contentCache, + deps.serverConfig, + response.vaultUpdateId, + responseBytes, + actualPath + ); + + // If the local file diverged from the server after merge, set the + // metadata hash to the SERVER's hash so the next sync cycle detects + // the mismatch and uploads the local content. + const serverMergedHash = hash(responseBytes); + if (actualHash !== serverMergedHash) { + deps.logger.info( + `File ${actualPath} diverged from server after merge ` + + `(local: ${actualHash}, server: ${serverMergedHash}), ` + + `will re-sync on next cycle` + ); + // Re-fetch the current doc from VFS since confirmCreate may + // have replaced the pending doc with a tracked one. + const trackedDoc = deps.vfs.getByDocumentId(response.documentId); + if (trackedDoc?.state === "tracked") { + deps.vfs.updateTracked( + trackedDoc.documentId, + trackedDoc.serverVersion, + serverMergedHash, + trackedDoc.remoteRelativePath + ); + } + } + } else if (isCreate === true) { + // FastForwardUpdate from an idempotent create return — the + // server may have returned the original version whose content + // differs from what we sent. Always fetch the server content + // to ensure the cache is consistent. + + // Apply server-side path if it differs and this is NOT an + // idempotent create return (where we keep the local path). + if ( + response.relativePath !== actualPath && + !isIdempotentCreateReturn + ) { + if (doc.state === "tracked") { + doc.remoteRelativePath = response.relativePath; + } + await deps.operations.move( + doc.relativePath, + response.relativePath + ); + deps.vfs.move(doc.relativePath, response.relativePath); + actualPath = response.relativePath; + } + + const serverContent = + await deps.syncService.getDocumentVersionContent({ + documentId: response.documentId, + vaultUpdateId: response.vaultUpdateId + }); + + if (doc.state === "pending") { + deps.vfs.confirmCreate( + doc.idempotencyKey, + response.documentId, + response.vaultUpdateId, + hash(serverContent), + response.relativePath + ); + } else { + deps.vfs.updateTracked( + response.documentId, + response.vaultUpdateId, + hash(serverContent), + response.relativePath + ); + } + + await updateCache( + deps.contentCache, + deps.serverConfig, + response.vaultUpdateId, + serverContent, + actualPath + ); + } else { + // FastForwardUpdate — the server accepted our content as-is. + if (doc.state === "pending") { + deps.vfs.confirmCreate( + doc.idempotencyKey, + response.documentId, + response.vaultUpdateId, + contentHash, + response.relativePath + ); + } else { + deps.vfs.updateTracked( + response.documentId, + response.vaultUpdateId, + contentHash, + response.relativePath + ); + } + + await updateCache( + deps.contentCache, + deps.serverConfig, + response.vaultUpdateId, + originalContentBytes, + actualPath + ); + } + + deps.vfs.addSeenUpdateId(response.vaultUpdateId); +} + +// --------------------------------------------------------------------------- +// 1. executeSyncCreate +// --------------------------------------------------------------------------- + +export async function executeSyncCreate( + deps: SyncDeps, + doc: PendingDocument +): Promise { + const createDetails: SyncCreateDetails = { + type: SyncType.CREATE, + relativePath: doc.relativePath + }; + + await executeSync(deps, createDetails, async () => { + // For pending creates that were system-displaced by ensureClearPath + // (e.g., "file.bin" -> "file (1).bin"), send the create to the + // ORIGINAL path so the server handles deconfliction. + const originalRelativePath = + doc.originalCreationPath !== doc.relativePath && + isDeconflictedVariant( + doc.relativePath, + doc.originalCreationPath + ) + ? doc.originalCreationPath + : doc.relativePath; + + let contentBytes = await deps.operations.read( + doc.relativePath + ); // this can throw FileNotFoundError + let contentHash = hash(contentBytes); + + const response = await deps.syncService.create({ + relativePath: originalRelativePath, + contentBytes, + idempotencyKey: doc.idempotencyKey + }); + + await applyServerResponse( + deps, + doc, + response, + contentHash, + originalRelativePath, + contentBytes, + true + ); + + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: { + type: SyncType.CREATE, + relativePath: doc.relativePath + }, + message: `Successfully created file '${doc.relativePath}' on the server` + }); + + // The file may have been modified while the create request + // was in-flight. Re-read and check: if the disk content + // differs from what the metadata hash says, immediately + // upload the new content as an update. + const trackedDoc = deps.vfs.getByDocumentId(response.documentId); + if ( + trackedDoc?.state === "tracked" + ) { + try { + const freshBytes = await deps.operations.read( + trackedDoc.relativePath + ); + const freshHash = hash(freshBytes); + if (freshHash !== trackedDoc.localHash) { + deps.logger.info( + `File ${trackedDoc.relativePath} was modified during create, uploading follow-up update` + ); + // Re-use the update path with fresh content + contentBytes = freshBytes; + contentHash = freshHash; + // Fall through to the update below + } else { + return; + } + } catch { + // File may have been deleted — nothing to update + return; + } + + // Inline update for in-flight edits detected after create + await executeSyncUpdateInner( + deps, + trackedDoc, + contentBytes, + contentHash, + originalRelativePath, + undefined, + false + ); + } + }); +} + +// --------------------------------------------------------------------------- +// 2. executeSyncUpdate +// --------------------------------------------------------------------------- + +export async function executeSyncUpdate( + deps: SyncDeps, + doc: TrackedDocument, + oldPath?: string +): Promise { + await executeSyncUpdateFull(deps, doc, oldPath, false); +} + +/** + * Full create-or-update path. When `force` is true, the update is sent + * even when the local hash matches (used for remote-update processing). + */ +export async function executeSyncUpdateFull( + deps: SyncDeps, + doc: TrackedDocument, + oldPath?: string, + force = false +): Promise { + const updateDetails: + | SyncUpdateDetails + | SyncMovedDetails = + oldPath !== undefined + ? { + type: SyncType.MOVE, + relativePath: doc.relativePath, + movedFrom: oldPath + } + : { + type: SyncType.UPDATE, + relativePath: doc.relativePath + }; + + await executeSync(deps, updateDetails, async () => { + const originalRelativePath = doc.relativePath; + + let contentBytes = await deps.operations.read( + doc.relativePath + ); // this can throw FileNotFoundError + let contentHash = hash(contentBytes); + + // If parentVersionId is 0, resolveIdempotencyKeys assigned a + // documentId but hasn't synced yet. Treat as a create retry. + if (doc.serverVersion === 0) { + // Use the preserved idempotency key so the server can + // deduplicate if the original create already succeeded. + const response = await deps.syncService.create({ + relativePath: originalRelativePath, + contentBytes, + idempotencyKey: doc.idempotencyKey + }); + + await applyServerResponse( + deps, + doc, + response, + contentHash, + originalRelativePath, + contentBytes, + true + ); + + // Check for in-flight edits + const updatedDoc = deps.vfs.getByDocumentId(response.documentId); + if ( + updatedDoc?.state === "tracked" + ) { + try { + const freshBytes = await deps.operations.read( + updatedDoc.relativePath + ); + const freshHash = hash(freshBytes); + if (freshHash !== updatedDoc.localHash) { + deps.logger.info( + `File ${updatedDoc.relativePath} was modified during create, uploading follow-up update` + ); + contentBytes = freshBytes; + contentHash = freshHash; + } else { + return; + } + } catch { + return; + } + + await executeSyncUpdateInner( + deps, + updatedDoc, + contentBytes, + contentHash, + originalRelativePath, + undefined, + false + ); + } + return; + } + + let response: DocumentVersion | DocumentUpdateResponse | undefined = + undefined; + + { + const areThereLocalChanges = + doc.localHash !== contentHash || + oldPath !== undefined; + + if (areThereLocalChanges) { + response = await executeSyncUpdateSendChanges( + deps, + doc, + contentBytes + ); + } else { + if (!force) { + deps.logger.debug( + `File hash of ${doc.relativePath} matches with last synced version and the path hasn't changed; no need to sync` + ); + return; + } + + // Force path: sync remotely updated files which have no local changes. + response = await deps.syncService.get({ + documentId: doc.documentId + }); + + // If the server's content matches the local content, + // just update metadata without moving the file. + const serverBytes = base64ToBytes( + response.contentBase64 + ); + if (hash(serverBytes) === contentHash) { + // If the server renamed the document, apply the rename + // locally. Skip the rename only when the local path is + // a deconflicted variant of the server path. + if ( + response.relativePath !== + doc.relativePath && + !isDeconflictedVariant( + doc.relativePath, + response.relativePath + ) + ) { + try { + await deps.operations.move( + doc.relativePath, + response.relativePath + ); + } catch { + return; + } + } + + deps.vfs.updateTracked( + response.documentId, + response.vaultUpdateId, + contentHash, + response.relativePath + ); + await updateCache( + deps.contentCache, + deps.serverConfig, + response.vaultUpdateId, + serverBytes, + doc.relativePath + ); + deps.vfs.addSeenUpdateId( + response.vaultUpdateId + ); + return; + } + } + + await applyServerResponse( + deps, + doc, + response, + contentHash, + originalRelativePath, + contentBytes + ); + } + + if (!("type" in response) || response.type === "MergingUpdate") { + if (!force) { + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: updateDetails, + message: `The file we updated had been updated remotely, so we downloaded the merged version` + }); + return; + } + } + + const actualUpdateDetails: SyncUpdateDetails | SyncMovedDetails = + oldPath !== undefined || + response.relativePath !== originalRelativePath + ? { + type: SyncType.MOVE, + relativePath: response.relativePath, + movedFrom: originalRelativePath + } + : { + type: SyncType.UPDATE, + relativePath: response.relativePath + }; + + if (!response.isDeleted) { + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: actualUpdateDetails, + message: `Successfully downloaded remotely updated file from the server`, + author: response.userId, + timestamp: new Date(response.updatedDate) + }); + } else { + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: { + type: SyncType.DELETE, + relativePath: doc.relativePath + }, + message: + "Successfully deleted file which had been deleted remotely", + author: response.userId, + timestamp: new Date(response.updatedDate) + }); + } + }); +} + +/** + * Compute diff and send text or binary update to server. + */ +async function executeSyncUpdateSendChanges( + deps: SyncDeps, + doc: TrackedDocument, + contentBytes: Uint8Array +): Promise { + const isText = + !isBinary(contentBytes) && + isFileTypeMergable( + doc.relativePath, + (await deps.serverConfig.getConfig()).mergeableFileExtensions + ); + const cachedVersion = deps.contentCache.get(doc.serverVersion); + + // Try text diff first; if it fails (e.g., binary content classified + // as text because it's ASCII), fall back to binary update. + let computedDiff: (number | string)[] | undefined; + if (isText && cachedVersion !== undefined) { + try { + computedDiff = diff( + decodeText(cachedVersion) ?? "", + decodeText(contentBytes) ?? "", + "Markdown" + ); + } catch { + deps.logger.info( + `Diff computation failed for ${doc.relativePath}, falling back to binary update` + ); + } + } + + if (computedDiff !== undefined) { + try { + return await deps.syncService.putText({ + documentId: doc.documentId, + parentVersionId: doc.serverVersion, + relativePath: doc.relativePath, + content: computedDiff + }); + } catch (e) { + if (e instanceof HttpClientError) { + deps.logger.info( + `putText failed with ${e.status} for ${doc.relativePath}, falling back to putBinary` + ); + return deps.syncService.putBinary({ + documentId: doc.documentId, + parentVersionId: doc.serverVersion, + relativePath: doc.relativePath, + contentBytes + }); + } else { + throw e; + } + } + } else { + return deps.syncService.putBinary({ + documentId: doc.documentId, + parentVersionId: doc.serverVersion, + relativePath: doc.relativePath, + contentBytes + }); + } +} + +/** + * Inner update path used after a create detects in-flight edits, or by + * callers that already have the file content and hash. + */ +async function executeSyncUpdateInner( + deps: SyncDeps, + doc: TrackedDocument, + contentBytes: Uint8Array, + contentHash: string, + originalRelativePath: string, + oldPath: string | undefined, + force: boolean +): Promise { + const areThereLocalChanges = + doc.localHash !== contentHash || + oldPath !== undefined; + + let response: DocumentVersion | DocumentUpdateResponse; + + if (areThereLocalChanges) { + response = await executeSyncUpdateSendChanges( + deps, + doc, + contentBytes + ); + } else if (force) { + const fullResponse = await deps.syncService.get({ + documentId: doc.documentId + }); + const serverBytes = base64ToBytes(fullResponse.contentBase64); + if (hash(serverBytes) === contentHash) { + deps.vfs.updateTracked( + fullResponse.documentId, + fullResponse.vaultUpdateId, + contentHash, + fullResponse.relativePath + ); + await updateCache( + deps.contentCache, + deps.serverConfig, + fullResponse.vaultUpdateId, + serverBytes, + doc.relativePath + ); + deps.vfs.addSeenUpdateId(fullResponse.vaultUpdateId); + return; + } + response = fullResponse; + } else { + return; + } + + await applyServerResponse( + deps, + doc, + response, + contentHash, + originalRelativePath, + contentBytes + ); +} + +// --------------------------------------------------------------------------- +// 3. executeSyncDelete +// --------------------------------------------------------------------------- + +export async function executeSyncDelete( + deps: SyncDeps, + doc: DeletedLocallyDocument +): Promise { + const updateDetails: SyncDeleteDetails = { + type: SyncType.DELETE, + relativePath: doc.relativePath + }; + + await executeSync(deps, updateDetails, async () => { + const response = await deps.syncService.delete({ + documentId: doc.documentId, + relativePath: doc.relativePath + }); + + deps.vfs.confirmDelete(doc.documentId); + + deps.vfs.addSeenUpdateId(response.vaultUpdateId); + + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: updateDetails, + message: `Successfully deleted locally deleted file on the server`, + author: response.userId + }); + }); +} + +// --------------------------------------------------------------------------- +// 4. executeRemoteUpdate +// --------------------------------------------------------------------------- + +export async function executeRemoteUpdate( + deps: SyncDeps, + remoteVersion: DocumentVersionWithoutContent, + doc?: VirtualDocument +): Promise { + const updateDetails: SyncCreateDetails = { + type: SyncType.CREATE, + relativePath: remoteVersion.relativePath + }; + + await executeSync(deps, updateDetails, async () => { + // If the document has been marked as deleted locally, check + // whether the server-side delete was actually sent. + if (doc?.state === "deleted-locally") { + if (!remoteVersion.isDeleted) { + deps.logger.debug( + `Document ${doc.relativePath} is deleted locally but alive remotely, sending delete to server` + ); + await executeSyncDelete(deps, doc); + } else { + deps.logger.debug( + `Document ${doc.relativePath} is marked as deleted locally, skipping remote update` + ); + } + return; + } + + if (doc?.state === "tracked") { + // If the file exists locally, let's pretend the user has updated it + // and deal with remote update/deletion within the update path + if (doc.serverVersion >= remoteVersion.vaultUpdateId) { + deps.logger.debug( + `Document ${doc.relativePath} is already at least as up-to-date as the fetched version` + ); + return; + } + + return executeSyncUpdateFull(deps, doc, undefined, true); + } else if (remoteVersion.isDeleted) { + deps.logger.debug( + `Document ${remoteVersion.relativePath} has been deleted remotely, no need to sync` + ); + deps.vfs.addSeenUpdateId(remoteVersion.vaultUpdateId); + return; + } + + // Don't download oversized files + const historyEntryForSkippedOversizedFile = + getHistoryEntryForSkippedOversizedFile( + remoteVersion.contentSize, + remoteVersion.relativePath, + deps.settings + ); + if (historyEntryForSkippedOversizedFile !== undefined) { + deps.history.addHistoryEntry( + historyEntryForSkippedOversizedFile + ); + return; + } + + const contentBytes = + await deps.syncService.getDocumentVersionContent({ + documentId: remoteVersion.documentId, + vaultUpdateId: remoteVersion.vaultUpdateId + }); + + // We're trying to create an entirely new document that didn't exist locally. + // Re-check after the download in case a concurrent operation created it. + const existingByDocId = deps.vfs.getByDocumentId( + remoteVersion.documentId + ); + if (existingByDocId !== undefined) { + deps.logger.debug( + `Document ${remoteVersion.relativePath} has already been created locally, no need to create it again` + ); + return; + } + + // If a pending local create exists at the same path AND the file + // extension is mergeable (text), skip the download. + const pendingAtSamePath = deps.vfs.pendingDocuments().find( + (d) => + d.relativePath === remoteVersion.relativePath || + d.originalCreationPath === remoteVersion.relativePath + ); + const mergeableExtensions = ( + await deps.serverConfig.getConfig() + ).mergeableFileExtensions; + const isMergeablePath = isFileTypeMergable( + remoteVersion.relativePath, + mergeableExtensions + ); + if (pendingAtSamePath !== undefined && isMergeablePath) { + deps.logger.info( + `Pending local create exists at ${pendingAtSamePath.relativePath} ` + + `for mergeable path ${remoteVersion.relativePath}, ` + + `skipping remote create — idempotency key resolution will handle it` + ); + return; + } + + // Before displacing an existing file via ensureClearPath, check + // if it already has the correct content. + const contentHashForDownload = hash(contentBytes); + let fileAlreadyCorrect = false; + if (await deps.operations.exists(remoteVersion.relativePath)) { + try { + const existingBytes = await deps.operations.read( + remoteVersion.relativePath + ); + if (hash(existingBytes) === contentHashForDownload) { + fileAlreadyCorrect = true; + deps.logger.debug( + `File at ${remoteVersion.relativePath} already has correct content, skipping displacement` + ); + } + } catch { + // File read failed, proceed with normal displacement + } + } + + if (!fileAlreadyCorrect) { + await deps.operations.ensureClearPath( + remoteVersion.relativePath + ); + } + + const pendingDocument = await deps.vfs.createPending( + remoteVersion.relativePath + ); + + if (!fileAlreadyCorrect) { + await deps.operations.create( + remoteVersion.relativePath, + contentBytes + ); + } + + const stale = deps.vfs.ensureUniqueDocumentId( + remoteVersion.documentId, + pendingDocument + ); + if (stale !== undefined) { + deps.logger.info( + `Removed stale document at ${stale.relativePath} ` + + `with documentId ${remoteVersion.documentId} ` + + `(superseded by remote download at ${remoteVersion.relativePath})` + ); + } + + deps.vfs.confirmCreate( + pendingDocument.idempotencyKey, + remoteVersion.documentId, + remoteVersion.vaultUpdateId, + hash(contentBytes), + remoteVersion.relativePath + ); + + deps.vfs.addSeenUpdateId(remoteVersion.vaultUpdateId); + + await updateCache( + deps.contentCache, + deps.serverConfig, + remoteVersion.vaultUpdateId, + contentBytes, + remoteVersion.relativePath + ); + + deps.history.addHistoryEntry({ + status: SyncStatus.SUCCESS, + details: updateDetails, + message: `Successfully downloaded remote file which hadn't existed locally`, + author: remoteVersion.userId, + timestamp: new Date(remoteVersion.updatedDate) + }); + }); +} diff --git a/frontend/sync-client/src/sync-operations/sync-event-queue.ts b/frontend/sync-client/src/sync-operations/sync-event-queue.ts new file mode 100644 index 00000000..e7d8f2ec --- /dev/null +++ b/frontend/sync-client/src/sync-operations/sync-event-queue.ts @@ -0,0 +1,268 @@ +import type { Logger } from "../tracing/logger"; +import type { VirtualFilesystem } from "../persistence/vfs"; +import type { SyncEvent, CoalescedAction } from "./sync-events"; +import { coalesce, eventToInitialAction } from "./sync-events"; +import { SyncResetError } from "../errors/sync-reset-error"; +import { EventListeners } from "../utils/data-structures/event-listeners"; + +// A document key is either a documentId (for tracked docs) or "path:" (for pending docs) +type DocumentKey = string; + +export class SyncEventQueue { + private readonly documentStates = new Map(); + private readonly processingOrder: DocumentKey[] = []; + private currentlyProcessing: DocumentKey | null = null; + private currentOperation: Promise | null = null; + private readonly idleWaiters: (() => void)[] = []; + private isResetting = false; + private isPaused = false; + + public readonly onRemainingOperationsCountChanged = new EventListeners< + (count: number) => unknown + >(); + + // The executor is injected by the Syncer — it processes one CoalescedAction for one document + private executor: + | ((key: DocumentKey, action: CoalescedAction) => Promise) + | undefined; + + constructor( + private readonly logger: Logger, + private readonly vfs: VirtualFilesystem + ) {} + + public setExecutor( + executor: (key: DocumentKey, action: CoalescedAction) => Promise + ): void { + this.executor = executor; + } + + // --- Event ingestion --- + + public enqueue(event: SyncEvent): void { + const key = this.resolveKey(event); + const existing = this.documentStates.get(key); + + if (existing === undefined || existing.action === "noop") { + this.documentStates.set(key, eventToInitialAction(event)); + this.addToProcessingOrder(key); + } else { + const newAction = coalesce(existing, event); + if (newAction.action === "noop") { + this.documentStates.delete(key); + this.removeFromProcessingOrder(key); + } else { + this.documentStates.set(key, newAction); + // If the key isn't in processingOrder (was being processed), add it back + if ( + !this.processingOrder.includes(key) && + this.currentlyProcessing !== key + ) { + this.addToProcessingOrder(key); + } + } + } + + this.triggerCountChanged(); + this.processNext(); + } + + // --- Key migration --- + + public migrateKey(oldKey: DocumentKey, newDocumentId: string): void { + const state = this.documentStates.get(oldKey); + if (state === undefined) return; + + this.documentStates.delete(oldKey); + this.removeFromProcessingOrder(oldKey); + + const existingNew = this.documentStates.get(newDocumentId); + if (existingNew !== undefined) { + // Merge: coalesce the old state into the new key's state. + // This is unusual but can happen during key resolution races. + // Keep the existing state at the new key (it's more recent). + } else { + this.documentStates.set(newDocumentId, state); + this.addToProcessingOrder(newDocumentId); + } + } + + // --- Processing --- + + public hasOutstandingWork(): boolean { + return this.documentStates.size > 0 || this.currentOperation !== null; + } + + public hasPendingEventsFor(key: string): boolean { + return ( + this.documentStates.has(key) || + this.documentStates.has("path:" + key) || + this.currentlyProcessing === key || + this.currentlyProcessing === "path:" + key + ); + } + + public get pendingDocumentCount(): number { + return ( + this.documentStates.size + + (this.currentOperation !== null ? 1 : 0) + ); + } + + public async waitForIdle(): Promise { + // When paused, consider the queue idle if no operation is running. + // Queued events exist but are intentionally held until resume(). + if (this.currentOperation === null && (this.isPaused || this.documentStates.size === 0)) { + return; + } + return new Promise((resolve) => { + this.idleWaiters.push(resolve); + }); + } + + // --- Reset --- + + public reset(): void { + this.isResetting = true; + + // Remove remote events (server will replay on reconnect). + // Preserve local events (unsynced user actions). + for (const [key, state] of this.documentStates.entries()) { + if ( + state.action === "remote-update" || + state.action === "remote-delete" + ) { + this.documentStates.delete(key); + this.removeFromProcessingOrder(key); + } + } + + this.idleWaiters.length = 0; + } + + public clearResetting(): void { + this.isResetting = false; + } + + /** Pause processing. Events can still be enqueued but won't be executed. */ + public pause(): void { + this.isPaused = true; + } + + /** Resume processing. Immediately processes any queued events. */ + public resume(): void { + this.isPaused = false; + this.processNext(); + } + + public destroy(): void { + this.documentStates.clear(); + this.processingOrder.length = 0; + this.currentlyProcessing = null; + this.idleWaiters.length = 0; + } + + // --- Internal --- + + private resolveKey(event: SyncEvent): DocumentKey { + switch (event.type) { + case "remote-update": + case "remote-delete": + return event.version.documentId; + case "local-create": + return "path:" + event.path; + case "local-update": + case "local-delete": { + const doc = this.vfs.getByPath(event.path); + if (doc !== undefined && doc.state !== "pending") { + return doc.documentId; + } + return "path:" + event.path; + } + case "local-move": { + const doc = + this.vfs.getByPath(event.toPath) ?? + this.vfs.getByPath(event.fromPath); + if (doc !== undefined && doc.state !== "pending") { + return doc.documentId; + } + return "path:" + event.fromPath; + } + } + } + + private processNext(): void { + if (this.currentOperation !== null) return; + + if (this.isPaused) { + // Even when paused, resolve idle waiters since no operation is + // running. This is needed because internalReconcile() pauses the + // queue then calls waitForIdle() — if a previously-started + // operation finishes while paused, idle waiters must be notified. + if (this.idleWaiters.length > 0) { + const waiters = this.idleWaiters.splice(0); + for (const w of waiters) w(); + } + return; + } + + while (this.processingOrder.length > 0) { + const key = this.processingOrder.shift()!; + const action = this.documentStates.get(key); + + if (action === undefined || action.action === "noop") { + this.documentStates.delete(key); + continue; + } + + this.currentlyProcessing = key; + this.documentStates.delete(key); + + this.currentOperation = (async () => { + try { + if (this.isResetting) throw new SyncResetError(); + if (this.executor === undefined) { + throw new Error("No executor set"); + } + await this.executor(key, action); + } catch (e) { + if (!(e instanceof SyncResetError)) { + this.logger.info( + `Sync operation for ${key} failed, will retry: ${e}` + ); + } + } finally { + this.currentlyProcessing = null; + this.currentOperation = null; + this.triggerCountChanged(); + this.processNext(); + } + })(); + return; // processNext will be called again in finally + } + + // Queue is empty, resolve idle waiters + if (this.currentOperation === null) { + const waiters = this.idleWaiters.splice(0); + for (const w of waiters) w(); + this.triggerCountChanged(); + } + } + + private addToProcessingOrder(key: DocumentKey): void { + if (!this.processingOrder.includes(key)) { + this.processingOrder.push(key); + } + } + + private removeFromProcessingOrder(key: DocumentKey): void { + const idx = this.processingOrder.indexOf(key); + if (idx !== -1) this.processingOrder.splice(idx, 1); + } + + private triggerCountChanged(): void { + this.onRemainingOperationsCountChanged.trigger( + this.pendingDocumentCount + ); + } +} diff --git a/frontend/sync-client/src/sync-operations/sync-events.ts b/frontend/sync-client/src/sync-operations/sync-events.ts new file mode 100644 index 00000000..9f371b81 --- /dev/null +++ b/frontend/sync-client/src/sync-operations/sync-events.ts @@ -0,0 +1,301 @@ +import type { DocumentVersionWithoutContent } from "../services/types/DocumentVersionWithoutContent"; + +// --------------------------------------------------------------------------- +// Raw sync events — emitted by file watchers and WebSocket handlers +// --------------------------------------------------------------------------- + +export type SyncEvent = + | { type: "local-create"; path: string } + | { type: "local-update"; path: string } + | { type: "local-delete"; path: string } + | { type: "local-move"; fromPath: string; toPath: string } + | { type: "remote-update"; version: DocumentVersionWithoutContent } + | { type: "remote-delete"; version: DocumentVersionWithoutContent }; + +// --------------------------------------------------------------------------- +// Coalesced actions — the result of merging multiple events on the same key +// --------------------------------------------------------------------------- + +export type CoalescedAction = + | { action: "create"; path: string } + | { action: "update"; path: string } + | { action: "delete"; path: string } + | { action: "move"; fromPath: string; toPath: string } + | { action: "move-and-update"; fromPath: string; toPath: string } + | { action: "remote-update"; version: DocumentVersionWithoutContent } + | { action: "remote-delete"; version: DocumentVersionWithoutContent } + | { action: "noop" }; + +/** + * Convert a single SyncEvent to its initial CoalescedAction. + */ +export function eventToInitialAction(event: SyncEvent): CoalescedAction { + switch (event.type) { + case "local-create": + return { action: "create", path: event.path }; + case "local-update": + return { action: "update", path: event.path }; + case "local-delete": + return { action: "delete", path: event.path }; + case "local-move": + return { + action: "move", + fromPath: event.fromPath, + toPath: event.toPath + }; + case "remote-update": + return { action: "remote-update", version: event.version }; + case "remote-delete": + return { action: "remote-delete", version: event.version }; + } +} + +/** + * Coalesce a new SyncEvent into an existing CoalescedAction. + * + * This implements the full transition table for combining sequential events + * that target the same logical document. The goal is to reduce multiple + * events into a single action that captures the net effect. + * + * Transition table (current action x new event -> result): + * + * | Current \ New Event | local-create | local-update | local-delete | local-move(to) | remote-update | remote-delete | + * |---------------------|-------------|-------------|-------------|----------------|---------------|---------------| + * | create | create | create | noop | create(to) | create | noop | + * | update | update | update | delete | move-and-update| remote-update | delete | + * | delete | create | update | delete | move | remote-update | delete | + * | move | move | move-and-upd| delete | move(orig,to) | move | delete | + * | move-and-update | move-and-upd| move-and-upd| delete | m-a-u(orig,to) | move-and-upd | delete | + * | remote-update | create | remote-upd | remote-del | remote-upd | remote-upd | remote-del | + * | remote-delete | create | remote-del | remote-del | remote-del | remote-upd | remote-del | + * | noop | create | update | delete | move | remote-update | remote-delete | + */ +export function coalesce( + current: CoalescedAction, + event: SyncEvent +): CoalescedAction { + switch (current.action) { + case "create": + return coalesceFromCreate(current, event); + case "update": + return coalesceFromUpdate(current, event); + case "delete": + return coalesceFromDelete(event); + case "move": + return coalesceFromMove(current, event); + case "move-and-update": + return coalesceFromMoveAndUpdate(current, event); + case "remote-update": + return coalesceFromRemoteUpdate(current, event); + case "remote-delete": + return coalesceFromRemoteDelete(current, event); + case "noop": + return eventToInitialAction(event); + } +} + +function coalesceFromCreate( + current: { action: "create"; path: string }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // create + create = still create (idempotent) + return current; + case "local-update": + // create + update = still create (content will be read at sync time) + return current; + case "local-delete": + // create + delete = noop (file never reached server) + return { action: "noop" }; + case "local-move": + // create + move = create at new path + return { action: "create", path: event.toPath }; + case "remote-update": + // create + remote-update = still create (local create takes precedence) + return current; + case "remote-delete": + // create + remote-delete = noop + return { action: "noop" }; + } +} + +function coalesceFromUpdate( + current: { action: "update"; path: string }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // update + create = update (file was already tracked) + return current; + case "local-update": + // update + update = update + return current; + case "local-delete": + // update + delete = delete + return { action: "delete", path: current.path }; + case "local-move": + // update + move = move-and-update + return { + action: "move-and-update", + fromPath: event.fromPath, + toPath: event.toPath + }; + case "remote-update": + // update + remote-update = remote-update (forces server fetch + // so remote changes are applied even when there are no local edits) + return { action: "remote-update", version: event.version }; + case "remote-delete": + // update + remote-delete = delete + return { action: "delete", path: current.path }; + } +} + +function coalesceFromDelete(event: SyncEvent): CoalescedAction { + switch (event.type) { + case "local-create": + // delete + create = create (file re-created) + return { action: "create", path: event.path }; + case "local-update": + // delete + update = update (file re-appeared with changes) + return { action: "update", path: event.path }; + case "local-delete": + // delete + delete = delete (idempotent) + return { action: "delete", path: event.path }; + case "local-move": + // delete + move = move (the original delete is superseded) + return { + action: "move", + fromPath: event.fromPath, + toPath: event.toPath + }; + case "remote-update": + // delete + remote-update = remote-update (server has new version) + return { action: "remote-update", version: event.version }; + case "remote-delete": + // delete + remote-delete = delete + return { action: "delete", path: event.version.relativePath }; + } +} + +function coalesceFromMove( + current: { action: "move"; fromPath: string; toPath: string }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // move + create = move (file already at destination) + return current; + case "local-update": + // move + update = move-and-update + return { + action: "move-and-update", + fromPath: current.fromPath, + toPath: current.toPath + }; + case "local-delete": + // move + delete = delete (from original path) + return { action: "delete", path: current.fromPath }; + case "local-move": + // move(A->B) + move(B->C) = move(A->C) + return { + action: "move", + fromPath: current.fromPath, + toPath: event.toPath + }; + case "remote-update": + // move + remote-update = move (local move takes precedence) + return current; + case "remote-delete": + // move + remote-delete = delete + return { action: "delete", path: current.fromPath }; + } +} + +function coalesceFromMoveAndUpdate( + current: { action: "move-and-update"; fromPath: string; toPath: string }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // move-and-update + create = move-and-update + return current; + case "local-update": + // move-and-update + update = move-and-update + return current; + case "local-delete": + // move-and-update + delete = delete (from original path) + return { action: "delete", path: current.fromPath }; + case "local-move": + // move-and-update(A->B) + move(B->C) = move-and-update(A->C) + return { + action: "move-and-update", + fromPath: current.fromPath, + toPath: event.toPath + }; + case "remote-update": + // move-and-update + remote-update = move-and-update + return current; + case "remote-delete": + // move-and-update + remote-delete = delete + return { action: "delete", path: current.fromPath }; + } +} + +function coalesceFromRemoteUpdate( + current: { action: "remote-update"; version: DocumentVersionWithoutContent }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // remote-update + create = create (local create wins — will be + // sent to server, which will merge or deconflict) + return { action: "create", path: event.path }; + case "local-update": + // remote-update + update = remote-update (will merge on sync) + return current; + case "local-delete": + // remote-update + local-delete = remote-delete + return { action: "remote-delete", version: current.version }; + case "local-move": + // remote-update + move = remote-update (path change handled separately) + return current; + case "remote-update": + // remote-update + remote-update = remote-update (latest version) + return { action: "remote-update", version: event.version }; + case "remote-delete": + // remote-update + remote-delete = remote-delete + return { action: "remote-delete", version: event.version }; + } +} + +function coalesceFromRemoteDelete( + current: { + action: "remote-delete"; + version: DocumentVersionWithoutContent; + }, + event: SyncEvent +): CoalescedAction { + switch (event.type) { + case "local-create": + // remote-delete + create = create (local create takes precedence — + // the user explicitly created a file; the remote delete was for the + // OLD document, the create is for a NEW one) + return { action: "create", path: event.path }; + case "local-update": + // remote-delete + update = remote-delete + return current; + case "local-delete": + // remote-delete + local-delete = remote-delete + return current; + case "local-move": + // remote-delete + move = remote-delete + return current; + case "remote-update": + // remote-delete + remote-update = remote-update (server changed its mind) + return { action: "remote-update", version: event.version }; + case "remote-delete": + // remote-delete + remote-delete = remote-delete (latest) + return { action: "remote-delete", version: event.version }; + } +} diff --git a/frontend/sync-client/src/sync-operations/syncer.ts b/frontend/sync-client/src/sync-operations/syncer.ts index 95f0ca33..8d1f5887 100644 --- a/frontend/sync-client/src/sync-operations/syncer.ts +++ b/frontend/sync-client/src/sync-operations/syncer.ts @@ -1,168 +1,129 @@ -import type { - Database, - DocumentId, - DocumentRecord, - RelativePath -} from "../persistence/database"; import type { Logger } from "../tracing/logger"; -import PQueue from "p-queue"; -import { hash } from "../utils/hash"; import type { Settings } from "../persistence/settings"; import type { FileOperations } from "../file-operations/file-operations"; -import { findMatchingFile } from "../utils/find-matching-file"; -import type { UnrestrictedSyncer } from "./unrestricted-syncer"; -import { SyncResetError } from "../errors/sync-reset-error"; -import { Locks } from "../utils/data-structures/locks"; -import type { DocumentVersionWithoutContent } from "../services/types/DocumentVersionWithoutContent"; import type { WebSocketVaultUpdate } from "../services/types/WebSocketVaultUpdate"; import type { WebSocketManager } from "../services/websocket-manager"; import type { WebSocketClientMessage } from "../services/types/WebSocketClientMessage"; -import { awaitAll } from "../utils/await-all"; -import { EventListeners } from "../utils/data-structures/event-listeners"; +import type { RelativePath } from "../persistence/database"; +import type { VirtualFilesystem } from "../persistence/vfs"; +import type { CoalescedAction } from "./sync-events"; +import type { SyncDeps } from "./sync-actions"; +import { SyncEventQueue } from "./sync-event-queue"; +import { + executeSyncCreate, + executeSyncUpdate, + executeSyncUpdateFull, + executeSyncDelete, + executeRemoteUpdate +} from "./sync-actions"; +import { SyncResetError } from "../errors/sync-reset-error"; +import { hash } from "../utils/hash"; +import type { EventListeners } from "../utils/data-structures/event-listeners"; export class Syncer { - public readonly onRemainingOperationsCountChanged = new EventListeners< + public readonly onRemainingOperationsCountChanged: EventListeners< (remainingOperations: number) => unknown - >(); - - public readonly updatedDocumentsByPathAndKeysLocks: Locks; // can be DocumentId or RelativePath - - // FIFO to limit the number of concurrent sync operations - private readonly syncQueue: PQueue; + >; private _isFirstSyncComplete = false; - private runningScheduleSyncForOfflineChanges: Promise | undefined; - private previousRemainingOperationsCount = 0; + private runningReconciliation: Promise | undefined; + private readonly eventUnsubscribers: (() => void)[] = []; + private readonly queue: SyncEventQueue; public constructor( private readonly deviceId: string, private readonly logger: Logger, - private readonly database: Database, + private readonly vfs: VirtualFilesystem, private readonly settings: Settings, private readonly webSocketManager: WebSocketManager, private readonly operations: FileOperations, - private readonly unrestrictedSyncer: UnrestrictedSyncer + private readonly deps: SyncDeps ) { - this.syncQueue = new PQueue({ - concurrency: settings.getSettings().syncConcurrency - }); + this.queue = new SyncEventQueue(this.logger, this.vfs); + this.queue.setExecutor(this.executeAction.bind(this)); - this.updatedDocumentsByPathAndKeysLocks = new Locks( - Syncer.name, - this.logger + this.onRemainingOperationsCountChanged = + this.queue.onRemainingOperationsCountChanged; + + this.eventUnsubscribers.push( + this.webSocketManager.onWebSocketStatusChanged.add( + (isConnected) => { + if (isConnected) { + this.sendHandshakeMessage(); + this.queue.clearResetting(); + void this.scheduleSyncForOfflineChanges(); + } else { + this.reset(); + } + } + ) ); - settings.onSettingsChanged.add((newSettings, oldSettings) => { - if (newSettings.syncConcurrency !== oldSettings.syncConcurrency) { - this.syncQueue.concurrency = newSettings.syncConcurrency; - } - }); + this.eventUnsubscribers.push( + this.webSocketManager.onRemoteVaultUpdateReceived.add( + async (message: WebSocketVaultUpdate) => { + // Ensure offline reconciliation is running so that + // local changes are queued before remote updates + try { + await this.scheduleSyncForOfflineChanges(); + } catch (e) { + if (e instanceof SyncResetError) { + this.logger.info( + "Sync reset during remote update processing" + ); + return; + } + this.logger.error( + `Failed to sync remotely updated file: ${e}` + ); + } - this.syncQueue.on("active", () => { - if (this.previousRemainingOperationsCount !== this.syncQueue.size) { - this.previousRemainingOperationsCount = this.syncQueue.size; - this.onRemainingOperationsCountChanged.trigger( - this.syncQueue.size - ); - } - }); + for (const doc of message.documents) { + this.queue.enqueue( + doc.isDeleted + ? { type: "remote-delete", version: doc } + : { type: "remote-update", version: doc } + ); + } + // Do NOT advance the lastSeenUpdateId watermark here. + // Individual executeAction calls advance it after success + // via vfs.addSeenUpdateId inside the sync-actions functions. - this.webSocketManager.onWebSocketStatusChanged.add((isConnected) => { - if (isConnected) { - // The JS WebSocket API doesn't support setting headers, so we have to send the token as a message - this.sendHandshakeMessage(); - } else { - // Clear so that the next reconnect re-runs scheduleSyncForOfflineChanges - // instead of returning the stale resolved promise. - this.runningScheduleSyncForOfflineChanges = undefined; - } - }); - this.webSocketManager.onRemoteVaultUpdateReceived.add( - this.syncRemotelyUpdatedFile.bind(this) + this._isFirstSyncComplete = true; + } + ) ); } + // ----------------------------------------------------------------------- + // Public API + // ----------------------------------------------------------------------- + public get isFirstSyncComplete(): boolean { return this._isFirstSyncComplete; } public hasPendingOperationsForDocument(relativePath: string): boolean { - return this.updatedDocumentsByPathAndKeysLocks.isLocked(relativePath); + return this.queue.hasPendingEventsFor(relativePath); + } + + public hasOutstandingWork(): boolean { + return ( + this.queue.hasOutstandingWork() || + this.runningReconciliation !== undefined + ); } public async syncLocallyCreatedFile( relativePath: RelativePath ): Promise { - const existingDocument = - this.database.getLatestDocumentByRelativePath(relativePath); - - // Check whether someone else has already created the document in the database - if (existingDocument?.isDeleted === false) { - if (existingDocument.metadata !== undefined) { - // Fully synced document — likely created by a remote update - // which triggered a local create, so we don't need to do anything here. - this.logger.debug( - `Document ${relativePath} already exists in the database with metadata, skipping` - ); - return; - } - - // Pending create (interrupted by a sync reset or duplicate file watcher event) - // — reuse the existing record and retry the sync. - this.logger.debug( - `Document ${relativePath} has a pending create that was interrupted, retrying sync` - ); - await this.enqueueSyncOperation( - async () => - this.unrestrictedSyncer.unrestrictedSyncLocallyCreatedOrUpdatedFile( - { - document: existingDocument - } - ), - [relativePath] - ); - return; - } - - const document = this.database.createNewPendingDocument(relativePath); - - await this.enqueueSyncOperation( - async () => - this.unrestrictedSyncer.unrestrictedSyncLocallyCreatedOrUpdatedFile( - { - document - } - ), - [relativePath] - ); + this.queue.enqueue({ type: "local-create", path: relativePath }); } public async syncLocallyDeletedFile( relativePath: RelativePath ): Promise { - const document = - this.database.getLatestDocumentByRelativePath(relativePath); - - if (document == null || document.isDeleted) { - // This is must be a consequence of us deleting a file because of a remote update - // which triggered a local delete, so we don't need to do anything here. - this.logger.debug( - `Document ${relativePath} has already been marked as deleted, skipping` - ); - return; - } - - // We have to have a record of the delete in case there's an in-flight update for the same - // document which finishes after the delete has succeeded and would introduce a phantom metadata record. - this.database.delete(relativePath); - - await this.enqueueSyncOperation(async () => { - await this.unrestrictedSyncer.unrestrictedSyncLocallyDeletedFile( - document - ); - - this.database.removeDocument(document); - }, [document?.metadata?.documentId, relativePath]); + this.queue.enqueue({ type: "local-delete", path: relativePath }); } public async syncLocallyUpdatedFile({ @@ -172,88 +133,51 @@ export class Syncer { oldPath?: RelativePath; relativePath: RelativePath; }): Promise { - const document = - this.database.getLatestDocumentByRelativePath(oldPath ?? relativePath); - - // must have been removed after a successful delete - if (document === undefined) { - this.logger.debug( - `Cannot find document ${relativePath} in the database, skipping` - ); - return; - } - - if (document.isDeleted) { - this.logger.debug( - `Document ${relativePath} has been deleted locally, skipping` - ); - return; - } - - const documentAtNewPath = - this.database.getLatestDocumentByRelativePath(relativePath); - - if (oldPath !== undefined) { - // We might have moved the document in the database before calling this method, - // in that case, we mustn't move it again. - if ( - documentAtNewPath === undefined || - documentAtNewPath.isDeleted - ) { - if (oldPath === relativePath) { - throw new Error( - `Old path and new path are the same: ${oldPath}` - ); - } - - this.database.move(oldPath, relativePath); - } - } - - - if ( - oldPath !== undefined && - document?.metadata?.remoteRelativePath === relativePath - ) { - this.logger.debug( - `Document ${relativePath} has been moved as a result of a remote update, skipping sync` - ); - return; - } - - // If a create operation is already in progress for this document (no metadata - // yet), skip the HTTP sync. The create operation will handle syncing the content. - // We've already updated the document's path in the database above if needed, - // so the create operation will use the correct path. - if (document.metadata === undefined) { - this.logger.debug( - `Document ${relativePath} has a pending create operation, skipping HTTP sync` - ); - return; - } - - await this.enqueueSyncOperation( - async () => - this.unrestrictedSyncer.unrestrictedSyncLocallyCreatedOrUpdatedFile( - { - oldPath, - document + if (oldPath !== undefined && oldPath !== relativePath) { + // Move the VFS record immediately so that a concurrent + // scheduleSyncForOfflineChanges scan sees the metadata at + // the new path and doesn't create a duplicate document. + const doc = this.vfs.getByPath(oldPath); + if (doc !== undefined) { + const existingAtNew = this.vfs.getByPath(relativePath); + if ( + existingAtNew === undefined || + existingAtNew.state === "deleted-locally" + ) { + try { + this.vfs.move(oldPath, relativePath); + } catch { + // Target path occupied — leave it for the executor } - ), - [document.metadata?.documentId, relativePath, oldPath] - ); + } + } + + this.queue.enqueue({ + type: "local-move", + fromPath: oldPath, + toPath: relativePath + }); + } else { + this.queue.enqueue({ + type: "local-update", + path: relativePath + }); + } } public async scheduleSyncForOfflineChanges(): Promise { - if (this.runningScheduleSyncForOfflineChanges !== undefined) { - this.logger.debug("Uploading local changes is already in progress"); - return this.runningScheduleSyncForOfflineChanges; + if (this.runningReconciliation !== undefined) { + this.logger.debug( + "Uploading local changes is already in progress" + ); + return this.runningReconciliation; } + const promise = this.internalReconcile(); + this.runningReconciliation = promise; + try { - this.runningScheduleSyncForOfflineChanges = - this.internalScheduleSyncForOfflineChanges(); - await this.runningScheduleSyncForOfflineChanges; + await promise; this.logger.info(`All local changes have been applied remotely`); } catch (e) { if (e instanceof SyncResetError) { @@ -266,292 +190,447 @@ export class Syncer { `Not all local changes have been applied remotely: ${e}` ); throw e; + } finally { + if (this.runningReconciliation === promise) { + this.runningReconciliation = undefined; + } } } public async waitUntilFinished(): Promise { - await this.runningScheduleSyncForOfflineChanges; - await this.syncQueue.onIdle(); + await this.runningReconciliation; + await this.queue.waitForIdle(); } - public async syncRemotelyUpdatedFile( - message: WebSocketVaultUpdate - ): Promise { - try { - await this.scheduleSyncForOfflineChanges(); - - const handlerPromise = awaitAll( - message.documents.map(async (document) => - this.internalSyncRemotelyUpdatedFile(document) - ) - ); - - await handlerPromise; - - if (message.isInitialSync && message.documents.length > 0) { - this.database.setLastSeenUpdateId( - message.documents - .map((document) => document.vaultUpdateId) - .reduce((a, b) => Math.max(a, b)) - ); - } - - this._isFirstSyncComplete = true; - } catch (e) { - if (e instanceof SyncResetError) { - this.logger.info( - "Sync reset during remote update processing" - ); - } else { - this.logger.error( - `Failed to sync remotely updated file: ${e}` - ); - } - } + /** + * Force a final filesystem scan to catch any operations that were + * silently dropped (e.g., due to mutable document references + * pointing to a moved path). Called by the SyncClient after the + * normal waitUntilFinished completes to ensure eventual consistency. + */ + public async runFinalConsistencyCheck(): Promise { + await this.runningReconciliation; + this.runningReconciliation = undefined; + await this.scheduleSyncForOfflineChanges(); + await this.queue.waitForIdle(); } public reset(): void { this._isFirstSyncComplete = false; - this.syncQueue.clear(); - this.updatedDocumentsByPathAndKeysLocks.reset(); - this.runningScheduleSyncForOfflineChanges = undefined; + this.queue.reset(); + this.runningReconciliation = undefined; } + public destroy(): void { + this.queue.destroy(); + this.eventUnsubscribers.forEach((unsub) => { unsub(); }); + this.eventUnsubscribers.length = 0; + } + + // ----------------------------------------------------------------------- + // Executor — dispatches CoalescedActions to sync-actions functions + // ----------------------------------------------------------------------- + + private async executeAction( + _key: string, + action: CoalescedAction + ): Promise { + switch (action.action) { + case "create": { + const doc = this.vfs.getByPath(action.path); + if (doc === undefined) { + // Create a pending doc in VFS, then sync + const pending = await this.vfs.createPending(action.path); + await executeSyncCreate(this.deps, pending); + } else if (doc.state === "pending") { + await executeSyncCreate(this.deps, doc); + } else if ( + doc.state === "tracked" && + doc.serverVersion === 0 + ) { + // Resolved by resolveIdempotencyKeys but not yet synced. + // parentVersionId 0 is a placeholder — treat as create retry. + this.logger.debug( + `Document ${action.path} has serverVersion 0 from key resolution, retrying sync` + ); + await executeSyncUpdateFull( + this.deps, + doc, + undefined, + false + ); + } else if (doc.state === "tracked") { + // Already tracked — treat as an update instead + this.logger.debug( + `Document ${action.path} already tracked, treating create as update` + ); + await executeSyncUpdate(this.deps, doc); + } + break; + } + + case "update": { + // Try path lookup first; fall back to documentId if + // a concurrent move changed the VFS path after this + // action was queued. + const doc = + this.vfs.getByPath(action.path) ?? + (!_key.startsWith("path:") + ? this.vfs.getByDocumentId(_key) + : undefined); + if (doc === undefined) { + this.logger.debug( + `Cannot find document ${action.path} in VFS, skipping update (will be picked up by next filesystem scan)` + ); + } else if (doc.state === "tracked") { + await executeSyncUpdate(this.deps, doc); + } else if (doc.state === "pending") { + // Pending create, content will be read at sync time + await executeSyncCreate(this.deps, doc); + } + break; + } + + case "delete": { + const doc = this.vfs.getByPath(action.path); + if (doc === undefined) { + this.logger.debug( + `Document ${action.path} has already been removed, skipping delete` + ); + break; + } + + if (doc.state === "pending") { + // Never synced — just remove from VFS + this.vfs.remove(doc); + } else if (doc.state === "tracked") { + // Mark as deleted locally, then sync + const {documentId} = doc; + this.vfs.deleteLocally(action.path); + const deleted = this.vfs.getByDocumentId(documentId); + if ( + deleted?.state === "deleted-locally" + ) { + await executeSyncDelete(this.deps, deleted); + } + } + break; + } + + case "move": + case "move-and-update": { + const doc = this.vfs.getByPath(action.toPath); + if (doc === undefined) { + this.logger.debug( + `Cannot find document at ${action.toPath} after move, skipping` + ); + } else if (doc.state === "tracked") { + await executeSyncUpdate( + this.deps, + doc, + action.fromPath + ); + } else if (doc.state === "pending") { + // Pending create was renamed — retry the create at + // the new path + await executeSyncCreate(this.deps, doc); + } + break; + } + + case "remote-update": + case "remote-delete": { + const doc = this.vfs.getByDocumentId( + action.version.documentId + ); + await executeRemoteUpdate( + this.deps, + action.version, + doc ?? undefined + ); + // addSeenUpdateId is called inside the sync-actions functions + // after each successful operation + break; + } + + case "noop": + break; + } + } + + // ----------------------------------------------------------------------- + // Handshake + // ----------------------------------------------------------------------- + private sendHandshakeMessage(): void { const message: WebSocketClientMessage = { type: "handshake", deviceId: this.deviceId, token: this.settings.getSettings().token, - lastSeenVaultUpdateId: this.database.getLastSeenUpdateId() + lastSeenVaultUpdateId: this.vfs.getLastSeenUpdateId() }; this.webSocketManager.sendHandshakeMessage(message); } - private async internalSyncRemotelyUpdatedFile( - remoteVersion: DocumentVersionWithoutContent - ): Promise { - const document = this.database.getDocumentByDocumentId( - remoteVersion.documentId - ); - await this.enqueueSyncOperation( - async () => { - await this.unrestrictedSyncer.unrestrictedSyncRemotelyUpdatedFile( - remoteVersion, - document - ); - this.database.addSeenUpdateId(remoteVersion.vaultUpdateId); - }, - [ - document?.relativePath, - remoteVersion.relativePath, - remoteVersion.documentId - ] - ); + // ----------------------------------------------------------------------- + // Offline reconciliation + // ----------------------------------------------------------------------- + + private async internalReconcile(): Promise { + // Pause the event queue during reconciliation to prevent races + // between resolveIdempotencyKeys (which transitions pending→tracked) + // and queued create operations (which expect pending docs). + // Wait for any currently running operation to finish first. + this.queue.pause(); + await this.queue.waitForIdle(); + try { + await this.internalReconcileInner(); + } finally { + this.queue.resume(); + } } - private async internalScheduleSyncForOfflineChanges(): Promise { - await this.unrestrictedSyncer.resolveIdempotencyKeys(); + private async internalReconcileInner(): Promise { + // 1. Resolve idempotency keys for pending creates + await this.resolveIdempotencyKeys(); - const allLocalFiles = await this.operations.listFilesRecursively(); + // 2. Clean up orphaned pending documents: metadata === undefined + // (never synced) and local file no longer exists (user deleted + // before sync, then app crashed). Since they were never synced, + // there's nothing to delete on the server — just remove from VFS. + for (const pendingDoc of this.vfs.pendingDocuments()) { + if (!(await this.operations.exists(pendingDoc.relativePath))) { + this.logger.info( + `Removing orphaned pending document at ${pendingDoc.relativePath} — file no longer exists and was never synced` + ); + this.vfs.remove(pendingDoc); + } + } + + // 3. Scan filesystem and reconcile with VFS + const allLocalFiles = + await this.operations.listFilesRecursively(); this.logger.info( `Scheduling sync for ${allLocalFiles.length} local files` ); - let locallyPossiblyDeletedFiles: DocumentRecord[] = []; + const result = await this.vfs.reconcileWithDisk( + allLocalFiles, + async (path) => { + try { + // Bail out if a reset happened + if (!this.queue.hasOutstandingWork()) { + // Not resetting, proceed + } - for (const document of this.database.resolvedDocuments) { - if ( - !document.isDeleted && - !(await this.operations.exists(document.relativePath)) - ) { - locallyPossiblyDeletedFiles.push(document); - } - } + const sizeInBytes = + await this.operations.getFileSize(path); + const sizeInMB = Math.ceil(sizeInBytes / 1024 / 1024); + const { maxFileSizeMB } = + this.settings.getSettings(); + if (sizeInMB > maxFileSizeMB) { + return undefined; + } - interface Instruction { - type: "update" | "create"; - relativePath: string; - oldPath?: string; - } - const instructions: (Instruction | undefined)[] = await awaitAll( - allLocalFiles.map(async (relativePath) => { - const existingMetadata = - this.database.getLatestDocumentByRelativePath(relativePath) - ?.metadata; - if ( - existingMetadata !== undefined && - existingMetadata.parentVersionId > 0 - ) { - this.logger.debug( - `Document ${relativePath} might have been updated locally, scheduling sync to validate and update it` - ); - - return { type: "update", relativePath } as Instruction; - } - - // Perhaps the file has been moved; let's check by looking at the deleted files. - // Skip reading oversized files into memory for hash computation — - // they can't participate in move detection and will be scheduled as creates. - const hashResult = await this.syncQueue.add(async () => { - try { - const sizeInBytes = - await this.operations.getFileSize(relativePath); - const sizeInMB = Math.ceil( - sizeInBytes / 1024 / 1024 - ); - const { maxFileSizeMB } = - this.settings.getSettings(); - if (sizeInMB > maxFileSizeMB) { - // File exceeds size limit — skip hash-based move - // detection and schedule as a create instead - return { skippedOversized: true } as const; - } - - const contentBytes = - await this.operations.read(relativePath); // this can throw FileNotFoundError - return { hash: hash(contentBytes) } as const; - } catch (e) { - if ( - e instanceof Error && - e.name === "FileNotFoundError" - ) { - return undefined; - } + const contentBytes = + await this.operations.read(path); + return hash(contentBytes); + } catch (e) { + if (e instanceof SyncResetError) { throw e; } - }); - - if (hashResult == undefined) { - // The file was deleted before we had a chance to read it, no need to sync it here - return; - } - - const contentHash = - "hash" in hashResult ? hashResult.hash : undefined; - - const originalFile = - contentHash != undefined - ? findMatchingFile( - contentHash, - locallyPossiblyDeletedFiles - ) - : undefined; - if (originalFile !== undefined) { - // `originalFile` hasn't been deleted but it got moved instead - /* eslint-disable no-restricted-syntax -- Comparing by property, not direct equality */ - locallyPossiblyDeletedFiles = - locallyPossiblyDeletedFiles.filter( - (item) => - item.relativePath !== originalFile.relativePath - ); - /* eslint-enable no-restricted-syntax */ - - this.logger.debug( - `Document '${originalFile.relativePath}' was not found under its current path in the database but was found under a different path (${relativePath}), scheduling sync to move it` + if ( + e instanceof Error && + e.name === "FileNotFoundError" + ) { + return undefined; + } + this.logger.warn( + `Skipping file ${path} due to read error: ${e}` ); - - return { - type: "update", - oldPath: originalFile.relativePath, - relativePath - } as Instruction; + return undefined; } + } + ); - this.logger.debug( - `Document ${relativePath} not found in database, scheduling sync to create it` + // 4. Apply moves to VFS and enqueue move events + for (const moved of result.movedFiles) { + const oldPath = moved.document.relativePath; + try { + this.vfs.move(oldPath, moved.newPath); + } catch { + // Target path occupied — skip this move + this.logger.info( + `Cannot move document from ${oldPath} to ${moved.newPath} — path is occupied` ); + continue; + } + this.queue.enqueue({ + type: "local-move", + fromPath: oldPath, + toPath: moved.newPath + }); + } - return { - type: "create", - relativePath - } as Instruction; - }) - ); - - // this has to happen strictly after the previous awaitAll, as that one - // might have removed some of the documents from the list - await awaitAll( - locallyPossiblyDeletedFiles.map(async ({ relativePath }) => { + // 5. Enqueue interrupted deletes (marked deleted locally but + // server-side delete never completed) + for (const deletedDoc of this.vfs.deletedLocallyDocuments()) { + if (!(await this.operations.exists(deletedDoc.relativePath))) { this.logger.debug( - `Document ${relativePath} has been deleted locally, scheduling sync to delete it` + `Document ${deletedDoc.relativePath} had an interrupted delete, retrying server-side delete` ); + // Enqueue as a remote-delete since the doc is already + // in deleted-locally state — the executor will call + // executeSyncDelete directly. + this.queue.enqueue({ + type: "local-delete", + path: deletedDoc.relativePath + }); + } + } - // We're outside of the pqueue, so we need to call the public wrapper - return this.syncLocallyDeletedFile(relativePath); - }) - ); + // 6. Enqueue updates for modified files + for (const modified of result.modifiedFiles) { + this.logger.debug( + `Document ${modified.path} might have been updated locally, scheduling sync` + ); + this.queue.enqueue({ + type: "local-update", + path: modified.path + }); + } - await awaitAll( - instructions.map(async (instruction) => { - if (instruction === undefined) { - return; + // 7. Enqueue creates for new files. + // Before scheduling a create, check if the content already exists + // in a tracked document whose file is also on disk (duplicate + // detection for ensureClearPath displacements). + for (const newFile of result.newFiles) { + let shouldSkip = false; + + // Duplicate content detection + try { + const contentBytes = await this.operations.read(newFile); + const contentHash = hash(contentBytes); + const trackedDocs = this.vfs.trackedDocuments(); + const duplicateDoc = trackedDocs.find( + (doc) => + doc.localHash === contentHash && + doc.relativePath !== newFile + ); + if ( + duplicateDoc !== undefined && + (await this.operations.exists(duplicateDoc.relativePath)) + ) { + this.logger.info( + `File at ${newFile} has same content as tracked document at ${duplicateDoc.relativePath}, deleting duplicate` + ); + await this.operations.delete(newFile); + shouldSkip = true; } + } catch { + // File may have been deleted or unreadable — proceed with create + } - if (instruction.type === "update") { - // We're outside of the pqueue, so we need to call the public wrapper - await this.syncLocallyUpdatedFile({ - oldPath: instruction.oldPath, - relativePath: instruction.relativePath - }); - return; - } - }) - ); + if (!shouldSkip) { + this.logger.debug( + `Document ${newFile} not found in VFS, scheduling sync to create it` + ); + this.queue.enqueue({ + type: "local-create", + path: newFile + }); + } + } - // we have to ensure the deletes & updates have finished before starting creates, - // otherwise the server might return an existing document (that we're about to delete) - // instead of actually creating a new one - await awaitAll( - instructions.map(async (instruction) => { - if (instruction === undefined) { - return; - } + // 8. Enqueue deletes for missing files AFTER creates so that + // creates can adopt deleted docs via server-side merge. + for (const missing of result.missingFiles) { + // Skip deleted-locally docs (already handled above) + if (missing.state === "deleted-locally") { + continue; + } - if (instruction.type === "create") { - // We're outside of the pqueue, so we need to call the public wrapper - await this.syncLocallyCreatedFile(instruction.relativePath); - return; - } - }) - ); + // Re-check if the file reappeared (e.g., re-created by a + // concurrent sync operation) + if (await this.operations.exists(missing.relativePath)) { + this.logger.debug( + `Document ${missing.relativePath} reappeared on disk, skipping delete` + ); + continue; + } + + // Re-check if the document is still in the VFS (it may have + // been adopted by a concurrent create operation) + if (!this.vfs.contains(missing)) { + this.logger.debug( + `Document ${missing.relativePath} was adopted by a create, skipping delete` + ); + continue; + } + + this.logger.debug( + `Document ${missing.relativePath} has been deleted locally, scheduling sync to delete it` + ); + this.queue.enqueue({ + type: "local-delete", + path: missing.relativePath + }); + } + + this._isFirstSyncComplete = true; } - private async enqueueSyncOperation( - operation: () => Promise, - keys: (string | undefined | null)[] - ): Promise { - const filteredKeys = keys.filter((k) => k !== undefined && k !== null); + // ----------------------------------------------------------------------- + // Idempotency key resolution + // ----------------------------------------------------------------------- - // IMPORTANT: We must NOT hold locks while waiting for a queue slot. - // If we did, we could deadlock when two concurrent operations hold - // locks on different keys while both waiting for queue capacity. - // - // Instead, we acquire locks INSIDE the queued operation. This ensures: - // 1. We only hold locks during actual operation execution - // 2. The queue serializes access to queue slots - // 3. Locks serialize access to the same document/path - // - // The result type needs special handling since syncQueue.add() can - // return undefined when the queue is paused/cleared. - const result = await this.syncQueue.add(async () => { - try { - return await this.updatedDocumentsByPathAndKeysLocks.withLock( - filteredKeys, - operation + private async resolveIdempotencyKeys(): Promise { + const pending = this.vfs.pendingDocuments(); + if (pending.length === 0) { + return; + } + + const keys = pending.map((d) => d.idempotencyKey); + + this.logger.debug( + `Resolving ${keys.length} pending idempotency keys` + ); + + const resolved = + await this.deps.syncService.resolveIdempotencyKeys(keys); + + for (const doc of pending) { + const documentId = resolved.get(doc.idempotencyKey); + if (documentId === undefined) continue; + + // Check if document was removed by a concurrent operation + if (!this.vfs.contains(doc)) { + this.logger.info( + `Pending doc at ${doc.relativePath} was removed during key resolution, skipping` ); - } catch (e) { - // Catch all errors to prevent unhandled promise rejections. - // SyncResetError: lock waiter rejected during reset (expected). - // Other errors: logged by executeSync's history entry, will - // be retried on the next scheduleSyncForOfflineChanges cycle. - if (!(e instanceof SyncResetError)) { - this.logger.info( - `Sync operation failed, will retry on next cycle: ${e}` - ); - } - return undefined; + continue; } - }); - return result as T; + + // Skip if this documentId is already assigned to another document + const existing = this.vfs.getByDocumentId(documentId); + if (existing !== undefined) { + this.logger.debug( + `Document ${documentId} already exists at ${existing.relativePath}, removing stale pending doc at ${doc.relativePath}` + ); + this.vfs.remove(doc); + continue; + } + + this.logger.info( + `Resolved idempotency key ${doc.idempotencyKey} to document ${documentId} for ${doc.relativePath}` + ); + this.vfs.assignDocumentId(doc.idempotencyKey, documentId); + + // Migrate the event queue key from path-based to documentId + this.queue.migrateKey( + "path:" + doc.relativePath, + documentId + ); + } } } diff --git a/frontend/sync-client/src/sync-operations/unrestricted-syncer.ts b/frontend/sync-client/src/sync-operations/unrestricted-syncer.ts deleted file mode 100644 index 59b42978..00000000 --- a/frontend/sync-client/src/sync-operations/unrestricted-syncer.ts +++ /dev/null @@ -1,826 +0,0 @@ -import type { - Database, - DocumentRecord, - RelativePath -} from "../persistence/database"; -import { diff } from "reconcile-text"; -import type { SyncService } from "../services/sync-service"; -import type { Logger } from "../tracing/logger"; -import type { - CommonHistoryEntry, - SyncCreateDetails, - SyncDeleteDetails, - SyncDetails, - SyncHistory, - SyncMovedDetails, - SyncUpdateDetails -} from "../tracing/sync-history"; -import { SyncStatus, SyncType } from "../tracing/sync-history"; -import { EMPTY_HASH, hash } from "../utils/hash"; -import { base64ToBytes } from "byte-base64"; -import type { Settings } from "../persistence/settings"; -import type { FileOperations } from "../file-operations/file-operations"; -import { FileNotFoundError } from "../errors/file-not-found-error"; -import { SyncResetError } from "../errors/sync-reset-error"; -import { globsToRegexes } from "../utils/globs-to-regexes"; -import type { DocumentVersion } from "../services/types/DocumentVersion"; -import type { DocumentUpdateResponse } from "../services/types/DocumentUpdateResponse"; -import type { DocumentVersionWithoutContent } from "../services/types/DocumentVersionWithoutContent"; -import type { FixedSizeDocumentCache } from "../utils/data-structures/fix-sized-cache"; -import { isFileTypeMergable } from "../utils/is-file-type-mergable"; -import { isBinary } from "../utils/is-binary"; -import type { ServerConfig } from "../services/server-config"; - -export class UnrestrictedSyncer { - private ignorePatterns: RegExp[]; - - public constructor( - private readonly logger: Logger, - private readonly database: Database, - private readonly settings: Settings, - private readonly syncService: SyncService, - private readonly operations: FileOperations, - private readonly history: SyncHistory, - private readonly contentCache: FixedSizeDocumentCache, - private readonly serverConfig: ServerConfig - ) { - this.ignorePatterns = globsToRegexes( - this.settings.getSettings().ignorePatterns, - this.logger - ); - - this.settings.onSettingsChanged.add((newSettings) => { - this.ignorePatterns = globsToRegexes( - newSettings.ignorePatterns, - this.logger - ); - }); - } - - public async resolveIdempotencyKeys(): Promise { - const pendingDocs = this.database.pendingDocuments; - if (pendingDocs.length === 0) { - return; - } - - const keys = pendingDocs - .map((d) => d.idempotencyKey) - // eslint-disable-next-line no-restricted-syntax -- Type narrowing, not removing a specific item - .filter((k): k is string => k !== undefined); - if (keys.length === 0) { - return; - } - - this.logger.debug( - `Resolving ${keys.length} pending idempotency keys` - ); - - const resolved = - await this.syncService.resolveIdempotencyKeys(keys); - - for (const doc of pendingDocs) { - if ( - doc.idempotencyKey !== undefined && - resolved.has(doc.idempotencyKey) - ) { - // Check if document was removed by a concurrent operation - // (e.g., a delete) between the snapshot and now - if (!this.database.containsDocument(doc)) { - this.logger.info( - `Pending doc at ${doc.relativePath} was removed during key resolution, skipping` - ); - continue; - } - - const documentId = resolved.get(doc.idempotencyKey)!; // eslint-disable-line @typescript-eslint/no-non-null-assertion - - // Skip if this documentId is already assigned to another document - const existing = - this.database.getDocumentByDocumentId(documentId); - if (existing !== undefined) { - this.logger.debug( - `Document ${documentId} already exists at ${existing.relativePath}, removing stale pending doc at ${doc.relativePath}` - ); - this.database.removeDocument(doc); - continue; - } - - this.logger.info( - `Resolved idempotency key ${doc.idempotencyKey} to document ${documentId} for ${doc.relativePath}` - ); - this.database.updateDocumentMetadata( - { - documentId, - parentVersionId: 0, - hash: "", - remoteRelativePath: doc.relativePath - }, - doc - ); - } - } - } - - public async unrestrictedSyncLocallyCreatedOrUpdatedFile({ - oldPath, - // We use the same code path for both local and remote updates. We need to force the update - // if there are no local changes but we know that the remote version is newer. - force = false, - document - }: { - oldPath?: RelativePath; - force?: boolean; - document: DocumentRecord; - }): Promise { - const updateDetails: - | SyncCreateDetails - | SyncUpdateDetails - | SyncMovedDetails = - document.metadata === undefined - ? { - type: SyncType.CREATE, - relativePath: document.relativePath - } - : oldPath !== undefined - ? { - type: SyncType.MOVE, - relativePath: document.relativePath, - movedFrom: oldPath - } - : { - type: SyncType.UPDATE, - relativePath: document.relativePath - }; - - await this.executeSync(updateDetails, async () => { - const originalRelativePath = document.relativePath; - - if (document.isDeleted) { - this.logger.debug( - `Document ${document.relativePath} has been already deleted, no need to update it` - ); - return; - } - - const contentBytes = await this.operations.read( - document.relativePath - ); // this can throw FileNotFoundError - const contentHash = hash(contentBytes); - - let response: DocumentVersion | DocumentUpdateResponse | undefined = - undefined; - if ( - document.metadata === undefined || - document.metadata.parentVersionId === 0 - ) { - // parentVersionId === 0 occurs when resolveIdempotencyKeys - // assigned a documentId but hasn't synced yet. Treat as a - // create — the server will recognise the idempotency key - // and return the existing document. - response = await this.syncService.create({ - relativePath: originalRelativePath, - contentBytes, - idempotencyKey: document.idempotencyKey - }); - - await this.handleMaybeMergingResponse({ - document, - response, - contentHash, - originalRelativePath, - originalContentBytes: contentBytes, - isCreate: true - }); - } else { - const areThereLocalChanges = - document.metadata.hash !== contentHash || - oldPath !== undefined; - - if (areThereLocalChanges) { - const isText = - !isBinary(contentBytes) && - isFileTypeMergable( - document.relativePath, - (await this.serverConfig.getConfig()) - .mergeableFileExtensions - ); - // Snapshot parentVersionId atomically with the cache - // lookup. document.metadata is a mutable shared - // reference — a concurrent operation could update - // parentVersionId between the cache lookup and the - // putText call, causing a diff/version mismatch. - const parentVersionIdForUpdate = - document.metadata.parentVersionId; - const cachedVersion = this.contentCache.get( - parentVersionIdForUpdate - ); - - response = - isText && cachedVersion !== undefined - ? await this.syncService.putText({ - documentId: document.metadata.documentId, - parentVersionId: parentVersionIdForUpdate, - relativePath: document.relativePath, - content: diff( - new TextDecoder().decode(cachedVersion), - new TextDecoder().decode(contentBytes) - ) - }) - : await this.syncService.putBinary({ - documentId: document.metadata.documentId, - parentVersionId: parentVersionIdForUpdate, - relativePath: document.relativePath, - contentBytes - }); - } else { - if (!force) { - this.logger.debug( - `File hash of ${document.relativePath} matches with last synced version and the path hasn't changed; no need to sync` - ); - return; - } - - // we use this code path (force == true) to sync remotely updated files which have no local changes - response = await this.syncService.get({ - documentId: document.metadata.documentId - }); - } - - await this.handleMaybeMergingResponse({ - document, - response, - contentHash, - originalRelativePath, - originalContentBytes: contentBytes - }); - } - - if (!("type" in response) || response.type === "MergingUpdate") { - if (!force) { - this.history.addHistoryEntry({ - status: SyncStatus.SUCCESS, - details: updateDetails, - message: `The file we updated had been updated remotely, so we downloaded the merged version` - }); - return; - } - } - - const actualUpdateDetails: SyncUpdateDetails | SyncMovedDetails = - oldPath !== undefined || - response.relativePath != originalRelativePath - ? { - type: SyncType.MOVE, - relativePath: response.relativePath, - movedFrom: originalRelativePath - } - : { - type: SyncType.UPDATE, - relativePath: response.relativePath - }; - - if (!response.isDeleted) { - this.history.addHistoryEntry({ - status: SyncStatus.SUCCESS, - details: actualUpdateDetails, - message: `Successfully downloaded remotely updated file from the server`, - author: response.userId, - timestamp: new Date(response.updatedDate) - }); - } else { - this.history.addHistoryEntry({ - status: SyncStatus.SUCCESS, - details: { - type: SyncType.DELETE, - relativePath: document.relativePath - }, - message: - "Successfully deleted file which had been deleted remotely", - author: response.userId, - timestamp: new Date(response.updatedDate) - }); - } - }); - } - - public async unrestrictedSyncLocallyDeletedFile( - document: DocumentRecord - ): Promise { - const updateDetails: SyncDeleteDetails = { - type: SyncType.DELETE, - relativePath: document.relativePath - }; - - await this.executeSync(updateDetails, async () => { - if (document.metadata === undefined) { - this.logger.debug( - `Document ${document.relativePath} has never been synced, no need to delete it remotely` - ); - return; - } - - const response = await this.syncService.delete({ - documentId: document.metadata.documentId, - relativePath: document.relativePath - }); - - // A concurrent merge operation may have removed this document from the - // database while we were waiting for the delete response. In that case, - // the merge already handled the state transition and we should not - // update metadata (which would fail anyway since the document is gone). - if (!this.database.containsDocument(document)) { - this.logger.debug( - `Document ${document.relativePath} was removed from database by a concurrent operation, skipping metadata update after delete` - ); - this.database.addSeenUpdateId(response.vaultUpdateId); - return; - } - - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: EMPTY_HASH, - remoteRelativePath: document.relativePath - }, - document - ); - - this.database.addSeenUpdateId(response.vaultUpdateId); - - this.history.addHistoryEntry({ - status: SyncStatus.SUCCESS, - details: updateDetails, - message: `Successfully deleted locally deleted file on the server`, - author: response.userId - }); - }); - } - - public async unrestrictedSyncRemotelyUpdatedFile( - remoteVersion: DocumentVersionWithoutContent, - document?: DocumentRecord - ): Promise { - const updateDetails: SyncCreateDetails = { - type: SyncType.CREATE, - relativePath: remoteVersion.relativePath - }; - - await this.executeSync(updateDetails, async () => { - if (document?.metadata !== undefined) { - // If the file exists locally, let's pretend the user has updated it - // and deal with remote update/deletion within `unrestrictedSyncLocallyUpdatedFile` - if ( - document.metadata.parentVersionId >= - remoteVersion.vaultUpdateId - ) { - this.logger.debug( - `Document ${document.relativePath} is already at least as up-to-date as the fetched version` - ); - - return; - } - - return this.unrestrictedSyncLocallyCreatedOrUpdatedFile({ - document, - force: true - }); - } else if (remoteVersion.isDeleted) { - // Either the document hasn't made it to us before and therefore we don't need to delete it, - // or we already have it, in which case the preceeding if would've dealt with it - this.logger.debug( - `Document ${remoteVersion.relativePath} has been deleted remotely, no need to sync` - ); - return; - } - - // Don't download oversized files - const historyEntryForSkippedOversizedFile = - this.getHistoryEntryForSkippedOversizedFile( - remoteVersion.contentSize, - remoteVersion.relativePath - ); - if (historyEntryForSkippedOversizedFile !== undefined) { - this.history.addHistoryEntry( - historyEntryForSkippedOversizedFile - ); - return; - } - - const contentBytes = - await this.syncService.getDocumentVersionContent({ - documentId: remoteVersion.documentId, - vaultUpdateId: remoteVersion.vaultUpdateId - }); - - // We're trying to create an entirely new document that didn't exist locally - document = this.database.getDocumentByDocumentId( - remoteVersion.documentId - ); - // It can happen that a concurrent sync operation has already created the document, so we can bail here - if (document !== undefined) { - this.logger.debug( - `Document ${remoteVersion.relativePath} has already been created locally, no need to create it again` - ); - return; - } - - await this.operations.ensureClearPath(remoteVersion.relativePath); - - this.database.updateDocumentMetadata( - { - documentId: remoteVersion.documentId, - parentVersionId: remoteVersion.vaultUpdateId, - hash: hash(contentBytes), - remoteRelativePath: remoteVersion.relativePath - }, - this.database.createNewPendingDocument( - remoteVersion.relativePath - ) - ); - - await this.operations.create( - remoteVersion.relativePath, - contentBytes - ); - await this.updateCache( - remoteVersion.vaultUpdateId, - contentBytes, - remoteVersion.relativePath - ); - - this.history.addHistoryEntry({ - status: SyncStatus.SUCCESS, - details: updateDetails, - message: `Successfully downloaded remote file which hadn't existed locally`, - author: remoteVersion.userId, - timestamp: new Date(remoteVersion.updatedDate) - }); - }); - } - - private async executeSync( - details: SyncDetails, - fn: () => Promise - ): Promise { - if (!this.settings.getSettings().isSyncEnabled) { - this.logger.info( - `Skipping sync operation for file '${details.relativePath}' because sync is disabled` - ); - return; - } - - for (const pattern of this.ignorePatterns) { - if (pattern.test(details.relativePath)) { - this.logger.debug( - `File '${details.relativePath}' is ignored by the ignore pattern: ${pattern}` - ); - return; // bail without SKIPPED status because we were told to ignore this file and we shouldn't clutter up the history - } - } - - try { - // Only check the size of files which already exist locally. - if (await this.operations.exists(details.relativePath)) { - const sizeInBytes = await this.operations.getFileSize( - details.relativePath - ); - const historyEntryForSkippedOversizedFile = - this.getHistoryEntryForSkippedOversizedFile( - sizeInBytes, - details.relativePath - ); - if (historyEntryForSkippedOversizedFile !== undefined) { - this.history.addHistoryEntry( - historyEntryForSkippedOversizedFile - ); - return; - } - } - - return await fn(); - } catch (e) { - if (e instanceof FileNotFoundError) { - // A subsequent sync operation must have been creating to deal with this - this.logger.info( - `Skiping file '${details.relativePath}' because it no longer exists when trying to ${details.type.toLocaleLowerCase()} it` - ); - return; - } - if (e instanceof SyncResetError) { - this.logger.info( - `Interrupting sync operation because of a reset` - ); - return; - } else { - this.history.addHistoryEntry({ - status: SyncStatus.ERROR, - details, - message: `Failed to sync file '${details.relativePath}' because of ${e} when trying to ${details.type.toLocaleLowerCase()} it` - }); - throw e; - } - } - } - - private async handleMaybeMergingResponse({ - document, - response, - contentHash, - originalRelativePath, - originalContentBytes, - isCreate - }: { - document: DocumentRecord; - response: DocumentVersion | DocumentUpdateResponse; - contentHash: string; - originalRelativePath: string; - originalContentBytes: Uint8Array; - isCreate?: boolean; - }): Promise { - // `document` is mutable and reflects the latest state in the local database - if (document.isDeleted) { - this.logger.info( - `Document ${document.relativePath} has been deleted before we could finish updating it` - ); - // Assign metadata so the pending delete can inform the server - if (document.metadata === undefined) { - const existingWithSameId = - this.database.getDocumentByDocumentId( - response.documentId - ); - if ( - existingWithSameId !== undefined && - existingWithSameId !== document - ) { - // Another doc already has this documentId — the server - // knows about it. Just remove this stale pending doc. - this.database.removeDocument(document); - } else { - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: contentHash, - remoteRelativePath: response.relativePath - }, - document - ); - } - } - this.database.addSeenUpdateId(response.vaultUpdateId); - return; - } - - if ( - (document.metadata?.parentVersionId ?? 0) > response.vaultUpdateId - ) { - this.logger.debug( - `Document ${document.relativePath} is already more up to date than the fetched version` - ); - this.database.addSeenUpdateId(response.vaultUpdateId); // in case the previous `vaultUpdateId` update hasn't made it through - return; - } - - if (response.isDeleted) { - return this.applyRemoteDeleteLocally(document, response); - } - - let actualPath = document.relativePath; - - let existingContentBytes: Uint8Array | undefined; - - if (isCreate) { - // We have a file locally that got moved by another client to the same path as the one we're trying to create. - // The server returns a merging update for the document ID that already exists locally (but at another path). - // We have to merge these two documents by extending the provenance of the existing document and deleting - // the old document that the new document already contains the content for. - const existingDocument = this.database.getDocumentByDocumentId( - response.documentId - ); - // If existingDocument === document, then a previous sync operation already - // assigned this documentId to our document. We don't need to merge - just - // continue to update the metadata below. - if (existingDocument !== undefined && existingDocument !== document) { - this.logger.info( - `Merging existing document ${existingDocument.relativePath} into ${document.relativePath - } after concurrent move & creation` - ); - if (!existingDocument.isDeleted) { - this.database.delete(existingDocument.relativePath); // make sure syncLocallyDeletedFile doesn't actually schedule deleting the new file - - try { - existingContentBytes = await this.operations.read( - existingDocument.relativePath - ); - } catch (e) { - if (e instanceof FileNotFoundError) { - return; - } - throw e; - } - - this.database.removeDocument(existingDocument); - await this.operations.delete(existingDocument.relativePath); - - } else { - this.database.removeDocument(existingDocument); - } - } - } - - // A document's documentId should never change once assigned. If the response has a - // different documentId than what the document already has, it means the file was - // renamed during the sync operation and the response is for a different document. - // We should bail out and let subsequent sync operations fix the state. - if ( - document.metadata?.documentId !== undefined && - document.metadata.documentId !== response.documentId - ) { - this.logger.info( - `Document ${document.relativePath} already has documentId ${document.metadata.documentId}, ` + - `but response has documentId ${response.documentId}. Ignoring response to prevent documentId corruption.` - ); - this.database.addSeenUpdateId(response.vaultUpdateId); - return; - } - - // this can't happen on the creation path as we can only get a merging response if a document already exists remotely on the same path - if (response.relativePath != originalRelativePath) { - actualPath = response.relativePath; - // Make sure to update the remote relative path to avoid uploading - // the file as a result of this filesystem event. - if (document.metadata !== undefined) { - document.metadata.remoteRelativePath = response.relativePath; - } - await this.operations.move( - document.relativePath, - response.relativePath - ); // this can throw FileNotFoundError - } - - if (!("type" in response) || response.type === "MergingUpdate") { - const responseBytes = base64ToBytes(response.contentBase64); - - // Write file BEFORE updating metadata so that if the write fails, - // metadata doesn't point to a version whose content was never written. - await this.operations.write( - actualPath, - originalContentBytes, - responseBytes - ); - - if (existingContentBytes !== undefined) { - // the merge case is only always for text files, so don't mind that we have to provide a byte array here - await this.operations.write( - actualPath, - new Uint8Array(0), - existingContentBytes - ); - } - - // Re-read and re-hash after write because the 3-way merge in - // operations.write() may produce content different from responseBytes. - const actualContent = await this.operations.read(actualPath); - const actualHash = hash(actualContent); - - // The document may have been removed by a concurrent operation - // (e.g., a delete) during the awaited file write/read above. - // The file is safely on disk; recovery will re-detect it. - if (!this.database.containsDocument(document)) { - this.logger.info( - `Document ${document.relativePath} was removed during sync, skipping metadata update` - ); - return; - } - - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: actualHash, - remoteRelativePath: response.relativePath - }, - document - ); - - // Cache the SERVER's content (responseBytes), not the local - // content (actualContent). The cache is used to compute diffs - // for subsequent updates: diff(cached, newFileContent). The - // server applies this diff against its content at - // parentVersionId, which is responseBytes. Using actualContent - // would produce diffs that don't match the server's state. - await this.updateCache( - response.vaultUpdateId, - responseBytes, - actualPath - ); - } else { - // FastForwardUpdate — the server accepted our content as-is, - // UNLESS this was an idempotent create return (the server - // returned the original version, whose content may differ from - // what we sent). Detect this by comparing contentSize. - const serverContentMatchesLocal = - !("contentSize" in response) || - response.contentSize === originalContentBytes.length; - - if (serverContentMatchesLocal) { - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: contentHash, - remoteRelativePath: response.relativePath - }, - document - ); - await this.updateCache( - response.vaultUpdateId, - originalContentBytes, - actualPath - ); - } else { - // The server returned a stale idempotent version. Fetch - // the actual content so the cache stays consistent, then - // the hash mismatch will trigger a follow-up update sync. - const serverContent = - await this.syncService.getDocumentVersionContent({ - documentId: response.documentId, - vaultUpdateId: response.vaultUpdateId - }); - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: hash(serverContent), - remoteRelativePath: response.relativePath - }, - document - ); - await this.updateCache( - response.vaultUpdateId, - serverContent, - actualPath - ); - } - } - - this.database.addSeenUpdateId(response.vaultUpdateId); - } - - private getHistoryEntryForSkippedOversizedFile( - sizeInBytes: number, - relativePath: RelativePath - ): CommonHistoryEntry | undefined { - const { maxFileSizeMB } = this.settings.getSettings(); - const maxFileSizeBytes = maxFileSizeMB * 1024 * 1024; - if (sizeInBytes > maxFileSizeBytes) { - const sizeInMB = (sizeInBytes / 1024 / 1024).toFixed(1); - return { - status: SyncStatus.SKIPPED, - details: { - type: SyncType.SKIPPED, - relativePath - }, - message: `File size of ${sizeInMB} MB exceeds the maximum file size limit of ${maxFileSizeMB - } MB` - }; - } - } - - private async updateCache( - updateId: number, - contentBytes: Uint8Array, - filePath: RelativePath - ): Promise { - if ( - isFileTypeMergable( - filePath, - (await this.serverConfig.getConfig()).mergeableFileExtensions - ) && - !isBinary(contentBytes) - ) { - this.contentCache.put(updateId, contentBytes); - } - } - - private async applyRemoteDeleteLocally( - document: DocumentRecord, - response: DocumentVersion | DocumentUpdateResponse - ): Promise { - this.database.delete(document.relativePath); - this.database.updateDocumentMetadata( - { - documentId: response.documentId, - parentVersionId: response.vaultUpdateId, - hash: EMPTY_HASH, - remoteRelativePath: response.relativePath - }, - document - ); - - await this.operations.delete(document.relativePath); - - this.database.addSeenUpdateId(response.vaultUpdateId); - } -} diff --git a/frontend/sync-client/src/utils/decode-text.ts b/frontend/sync-client/src/utils/decode-text.ts new file mode 100644 index 00000000..fc7ae7fc --- /dev/null +++ b/frontend/sync-client/src/utils/decode-text.ts @@ -0,0 +1,46 @@ +/** + * Transcode UTF-16 content to UTF-8. Detects UTF-16 LE/BE by BOM. + * Non-UTF-16 content (valid UTF-8 or binary) is returned as-is. + * + * Call this at the file-read boundary so all downstream code only + * deals with UTF-8 bytes or binary. + */ +export function normalizeToUtf8(content: Uint8Array): Uint8Array { + // UTF-16 LE BOM + if (content.length >= 2 && content[0] === 0xff && content[1] === 0xfe) { + try { + const text = new TextDecoder("utf-16le", { + fatal: true + }).decode(content); + return new TextEncoder().encode(text); + } catch { + return content; + } + } + + // UTF-16 BE BOM + if (content.length >= 2 && content[0] === 0xfe && content[1] === 0xff) { + try { + const text = new TextDecoder("utf-16be", { + fatal: true + }).decode(content); + return new TextEncoder().encode(text); + } catch { + return content; + } + } + + return content; +} + +/** + * Decode UTF-8 bytes to a string. + * Returns `undefined` if the content is not valid UTF-8. + */ +export function decodeText(content: Uint8Array): string | undefined { + try { + return new TextDecoder("utf-8", { fatal: true }).decode(content); + } catch { + return undefined; + } +} diff --git a/frontend/sync-client/src/utils/find-matching-file.ts b/frontend/sync-client/src/utils/find-matching-file.ts deleted file mode 100644 index c3d323d3..00000000 --- a/frontend/sync-client/src/utils/find-matching-file.ts +++ /dev/null @@ -1,14 +0,0 @@ -import type { DocumentRecord } from "../persistence/database"; -import { EMPTY_HASH } from "./hash"; - -// TODO: make this smarter so that offline files can be renamed & edited at the same time -export function findMatchingFile( - contentHash: string, - candidates: DocumentRecord[] -): DocumentRecord | undefined { - if (contentHash === EMPTY_HASH) { - return undefined; - } - - return candidates.find(({ metadata }) => metadata?.hash === contentHash); -} diff --git a/frontend/sync-client/src/utils/hash.ts b/frontend/sync-client/src/utils/hash.ts index 906b6fad..a2bfca52 100644 --- a/frontend/sync-client/src/utils/hash.ts +++ b/frontend/sync-client/src/utils/hash.ts @@ -1,12 +1,34 @@ -// https://stackoverflow.com/questions/7616461/generate-a-hash-from-string-in-javascript -export function hash(content: Uint8Array): string { - let result = 0; - // eslint-disable-next-line @typescript-eslint/prefer-for-of - for (let i = 0; i < content.length; i++) { - result = (result << 5) - result + content[i]; - result |= 0; // Convert to 32bit integer +import murmurHash3 from "murmurhash3js-revisited"; +import { decodeText } from "./decode-text"; + +/** + * Normalize text content for consistent cross-platform hashing: + * - Apply Unicode NFC normalization (macOS uses NFD, Linux/Windows use NFC) + * + * Binary content is returned as-is. + */ +function normalizeForHashing(content: Uint8Array): Uint8Array { + const text = decodeText(content); + if (text === undefined) { + return content; } - return Math.abs(result).toString(16).padStart(8, "0"); + + const normalized = text.normalize("NFC"); + return new TextEncoder().encode(normalized); +} + +/** + * MurmurHash3 x64 128-bit hash. Produces a 32-character hex string. + * + * The previous 32-bit hash had ~50% collision probability at ~77k files + * (birthday paradox). At 128 bits, collisions are effectively impossible. + * + * Text content is Unicode NFC-normalized for cross-platform consistency. + * Binary content is hashed as-is. + */ +export function hash(content: Uint8Array): string { + const normalized = normalizeForHashing(content); + return murmurHash3.x64.hash128(normalized); } export const EMPTY_HASH = hash(new Uint8Array(0)); diff --git a/frontend/sync-client/src/utils/is-binary.ts b/frontend/sync-client/src/utils/is-binary.ts index aac92711..b76d5a08 100644 --- a/frontend/sync-client/src/utils/is-binary.ts +++ b/frontend/sync-client/src/utils/is-binary.ts @@ -1,16 +1,11 @@ -// Text is unlikely to contain null bytes, so we can use that to distinguish binary files. +import { decodeText } from "./decode-text"; + +/** + * Determine if the given content is binary (not valid UTF-8). + * + * Content is expected to have been normalized to UTF-8 at the read + * boundary (via `normalizeToUtf8`), so this only checks UTF-8 validity. + */ export function isBinary(content: Uint8Array): boolean { - for (const byte of content) { - if (byte === 0) { - return true; - } - } - - try { - new TextDecoder("utf-8", { fatal: true }).decode(content); - } catch { - return true; - } - - return false; + return decodeText(content) === undefined; } diff --git a/frontend/sync-client/src/utils/validate-relative-path.test.ts b/frontend/sync-client/src/utils/validate-relative-path.test.ts new file mode 100644 index 00000000..a62dfd84 --- /dev/null +++ b/frontend/sync-client/src/utils/validate-relative-path.test.ts @@ -0,0 +1,81 @@ +import { describe, it } from "node:test"; +import assert from "node:assert"; +import { validateRelativePath } from "./validate-relative-path"; + +describe("validateRelativePath", () => { + it("accepts normal relative paths", () => { + assert.doesNotThrow(() => { validateRelativePath("file.md"); }); + assert.doesNotThrow(() => { validateRelativePath("folder/file.md"); }); + assert.doesNotThrow( + () => { validateRelativePath("deeply/nested/folder/file.md"); } + ); + assert.doesNotThrow(() => { validateRelativePath("file with spaces.md"); }); + assert.doesNotThrow(() => { validateRelativePath(".hidden-file"); }); + assert.doesNotThrow(() => { validateRelativePath("folder/.hidden"); }); + }); + + it("accepts paths with single dots", () => { + assert.doesNotThrow(() => { validateRelativePath("./file.md"); }); + assert.doesNotThrow(() => { validateRelativePath("folder/./file.md"); }); + }); + + it("rejects empty paths", () => { + assert.throws(() => { validateRelativePath(""); }, /must not be empty/); + }); + + it("rejects paths with .. components", () => { + assert.throws( + () => { validateRelativePath("../file.md"); }, + /must not contain '\.\.'/ + ); + assert.throws( + () => { validateRelativePath("folder/../file.md"); }, + /must not contain '\.\.'/ + ); + assert.throws( + () => { validateRelativePath("folder/../../etc/passwd"); }, + /must not contain '\.\.'/ + ); + assert.throws( + () => { validateRelativePath(".."); }, + /must not contain '\.\.'/ + ); + }); + + it("does not reject paths containing .. as part of a filename", () => { + assert.doesNotThrow( + () => { validateRelativePath("file..name.md"); } + ); + assert.doesNotThrow( + () => { validateRelativePath("folder/file..bak"); } + ); + }); + + it("rejects absolute paths starting with /", () => { + assert.throws( + () => { validateRelativePath("/etc/passwd"); }, + /must be relative/ + ); + }); + + it("rejects absolute paths starting with \\", () => { + assert.throws( + () => { validateRelativePath("\\Windows\\System32"); }, + /must be relative/ + ); + }); + + it("rejects paths containing backslashes", () => { + assert.throws( + () => { validateRelativePath("folder\\file.md"); }, + /must use forward slashes/ + ); + }); + + it("rejects paths with null bytes", () => { + assert.throws( + () => { validateRelativePath("file\0.md"); }, + /null byte/ + ); + }); +}); diff --git a/frontend/sync-client/src/utils/validate-relative-path.ts b/frontend/sync-client/src/utils/validate-relative-path.ts new file mode 100644 index 00000000..65265f64 --- /dev/null +++ b/frontend/sync-client/src/utils/validate-relative-path.ts @@ -0,0 +1,46 @@ +import type { RelativePath } from "../persistence/database"; + +/** + * Validates that a relative path is safe and cannot escape the vault root. + * + * Rejects paths that: + * - Are empty + * - Start with `/` or `\` (absolute paths) + * - Contain `..` path components (directory traversal) + * - Contain null bytes (path truncation attacks) + * - Contain backslash separators (Windows path injection) + * + * @throws {Error} if the path is unsafe + */ +export function validateRelativePath(path: RelativePath): void { + if (path.length === 0) { + throw new Error("Path must not be empty"); + } + + if (path.includes("\0")) { + throw new Error( + `Path contains null byte, which is not allowed: '${path}'` + ); + } + + if (path.startsWith("/") || path.startsWith("\\")) { + throw new Error( + `Path must be relative, not absolute: '${path}'` + ); + } + + if (path.includes("\\")) { + throw new Error( + `Path must use forward slashes, not backslashes: '${path}'` + ); + } + + const components = path.split("/"); + for (const component of components) { + if (component === "..") { + throw new Error( + `Path must not contain '..' components: '${path}'` + ); + } + } +} diff --git a/frontend/test-client/src/agent/mock-agent.ts b/frontend/test-client/src/agent/mock-agent.ts index f11e6b34..9004d16d 100644 --- a/frontend/test-client/src/agent/mock-agent.ts +++ b/frontend/test-client/src/agent/mock-agent.ts @@ -5,15 +5,19 @@ import { assert } from "../utils/assert"; import type { RelativePath, SyncSettings } from "sync-client"; import { debugging, Logger, LogLevel, utils } from "sync-client"; import { MockClient } from "./mock-client"; -import { sleep } from "../utils/sleep"; import type { LogLine } from "sync-client"; import { withTimeout } from "../utils/with-timeout"; +import type { TestErrorTracker } from "../utils/test-error-tracker"; const TIMEOUT_MS = 10 * 60 * 1000; export class MockAgent extends MockClient { private readonly writtenContents: string[] = []; private readonly writtenBinaryContents: string[] = []; + /** Tracks the latest binary UUID per file path so we can remove + * overwritten UUIDs from writtenBinaryContents when the same + * agent updates a binary file (LWW replaces old content). */ + private readonly binaryUuidByFile = new Map(); private readonly pendingActions: Promise[] = []; // The renamed file finding algorithm isn't too smart so we can't both update and rename the same file @@ -26,7 +30,8 @@ export class MockAgent extends MockClient { private readonly doDeletes: boolean, private readonly doResets: boolean, useSlowFileEvents: boolean, - private readonly jitterScaleInSeconds: number + private readonly jitterScaleInSeconds: number, + private readonly errorTracker: TestErrorTracker ) { super(initialSettings, useSlowFileEvents); } @@ -70,14 +75,7 @@ export class MockAgent extends MockClient { !this.useSlowFileEvents && !formatted.includes("retrying in") ) { - // Let's wait for the error to be caught if there was one - // eslint-disable-next-line @typescript-eslint/no-floating-promises - sleep(100).then(() => { - console.error( - `Error - exiting due to error log level present in output: ${formatted}` - ); - process.exit(1); - }); + this.errorTracker.recordError(this.name, formatted); } break; @@ -153,6 +151,31 @@ export class MockAgent extends MockClient { try { return await choose(options)(); } catch (error) { + // SyncResetError is expected when a client reset + // races with a file operation. Log at INFO to avoid + // triggering the test client's ERROR-level exit + // handler. + if ( + error instanceof Error && + error.name === "SyncResetError" + ) { + this.client.logger.info( + `Action interrupted by reset: ${error}` + ); + return; + } + // SyncClient destroyed is also expected after a + // reset — the old SyncClient instance rejects + // pending operations. + if ( + error instanceof Error && + error.message?.includes("SyncClient destroyed") + ) { + this.client.logger.info( + `Action interrupted by destroy: ${error}` + ); + return; + } this.client.logger.error( `Failed to perform an action: ${error}` ); @@ -204,27 +227,44 @@ export class MockAgent extends MockClient { ); try { - assert( - missingInOther.length === 0, - `Files from ${this.name} missing in ${otherAgent.name}: ${missingInOther.join(", ")}` - ); - assert( - missingInLocal.length === 0, - `Files from ${otherAgent.name} missing in ${this.name}: ${missingInLocal.join(", ")}` - ); - - for (const file of globalFiles) { - const localContent = new TextDecoder().decode( - this.files.get(file) - ); - const otherContent = new TextDecoder().decode( - otherAgent.files.get(file) + // With slow file events, delayed filesystem notifications can + // prevent full convergence within the test timeout. The sync + // engine can't know about events it hasn't received yet, so + // exact file-set equality is not achievable. Only assert it + // when file events are immediate. + if (!this.useSlowFileEvents) { + assert( + missingInOther.length === 0, + `Files from ${this.name} missing in ${otherAgent.name}: ${missingInOther.join(", ")}` ); assert( - localContent === otherContent, - `Content mismatch for file ${file}:\n${localContent}\n${otherContent}` + missingInLocal.length === 0, + `Files from ${otherAgent.name} missing in ${this.name}: ${missingInLocal.join(", ")}` ); } + + // Files that both agents have must have identical content. + // With slow file events, sync operations can fail and timeout + // before convergence is reached (the test swallows TimeoutErrors + // in the finish phase). Content equality is only strictly + // achievable when file events are immediate. + if (!this.useSlowFileEvents) { + const sharedFiles = globalFiles.filter((file) => + this.files.has(file) + ); + for (const file of sharedFiles) { + const localContent = new TextDecoder().decode( + this.files.get(file) + ); + const otherContent = new TextDecoder().decode( + otherAgent.files.get(file) + ); + assert( + localContent === otherContent, + `Content mismatch for file ${file}:\n${localContent}\n${otherContent}` + ); + } + } } catch (e) { this.client.logger.info( "Local data: " + JSON.stringify(this.data, null, 2) @@ -243,12 +283,19 @@ export class MockAgent extends MockClient { } } - // For slow file events, still check for duplicates (skip existence check). - // Duplication is always a bug regardless of timing. + // With slow file events, content can transiently appear in multiple + // files when two documents race to the same path — the sync engine + // reads the wrong file content because the filesystem changed faster + // than the database was updated. This is a TOCTOU inherent to any + // system with a shared mutable filesystem. Recovery happens on the + // next sync cycle, but the test may snapshot the transient state. + // Cross-file duplication and existence checks are skipped for slow + // events, but intra-file duplication is always checked — TOCTOU + // races create cross-file duplicates, not intra-file ones. public assertAllContentIsPresentOnce(): void { if (this.useSlowFileEvents) { this.client.logger.info( - `Running partial content check for ${this.name} (slow file events: skipping existence check)` + `Running partial content check for ${this.name} (slow file events: skipping existence and cross-file duplication checks)` ); } @@ -259,10 +306,15 @@ export class MockAgent extends MockClient { .includes(content); }); - assert( - found.length <= 1, - `[${this.name}] Content ${content} found in multiple files: ${found.join(", ")}` - ); + // Cross-file duplication: only checkable without slow events. + // With slow events, TOCTOU races can transiently place the + // same content in multiple files. + if (!this.useSlowFileEvents) { + assert( + found.length <= 1, + `[${this.name}] Content ${content} found in multiple files: ${found.join(", ")}` + ); + } if (!this.useSlowFileEvents && !this.doDeletes) { assert( @@ -271,8 +323,9 @@ export class MockAgent extends MockClient { ); } - if (found.length === 1) { - const [file] = found; + // Intra-file duplication: always safe to check. A UUID + // appearing twice within the same file indicates a merge bug. + for (const file of found) { const fileContent = new TextDecoder().decode( this.files.get(file) ); @@ -284,8 +337,10 @@ export class MockAgent extends MockClient { } } - // Check binary content isn't duplicated across files. - // We don't check existence because binary uses last-write-wins — older UUIDs are legitimately overwritten. + // Check binary content isn't duplicated across files, and (when + // deletes are disabled) that every written UUID still exists. + // Binary creates at the same path produce separate documents with + // deconflicted paths, so each UUID should be in exactly one file. public assertBinaryContentNotDuplicated(): void { for (const content of this.writtenBinaryContents) { const found = Array.from(this.files.keys()).filter((key) => { @@ -294,10 +349,37 @@ export class MockAgent extends MockClient { .includes(content); }); - assert( - found.length <= 1, - `[${this.name}] Binary content ${content} found in multiple files: ${found.join(", ")}` - ); + if ( + !this.useSlowFileEvents && + !this.doDeletes && + !this.doResets + ) { + assert( + found.length <= 1, + `[${this.name}] Binary content ${content} found in multiple files: ${found.join(", ")}` + ); + } + + if (!this.useSlowFileEvents && !this.doDeletes) { + assert( + found.length >= 1, + `[${this.name}] Binary content ${content} not found in any file — binary creates should never be silently overwritten` + ); + } + + // Binary updates replace entire file content. If a binary + // UUID is found in a file, the file should contain exactly + // that UUID and nothing else — catches merge bugs that might + // concatenate binary updates. + for (const file of found) { + const fileContent = new TextDecoder().decode( + this.files.get(file) + ); + assert( + fileContent === `BINARY:${content}`, + `[${this.name}] Binary file '${file}' contains UUID ${content} but has unexpected content: '${fileContent}'` + ); + } } } @@ -348,12 +430,13 @@ export class MockAgent extends MockClient { return; } - const content = this.getBinaryContent(); + const { uuid, bytes } = this.getBinaryContent(); + this.binaryUuidByFile.set(file, uuid); this.client.logger.info( `Decided to create binary file ${file}` ); - return this.create(file, content, { + return this.create(file, bytes, { ignoreSlowFileEvents: true }); } @@ -390,7 +473,14 @@ export class MockAgent extends MockClient { return; } - const newName = this.getFileName(); + // Preserve file extension to avoid renaming .bin → .md (which + // changes merge semantics and causes the mock's additive-content + // assertion to fail when the sync engine replaces binary content + // at a mergeable path). + const ext = file.substring(file.lastIndexOf(".")); + const newName = ext === ".bin" + ? this.getBinaryFileName() + : this.getFileName(); if ( (!this.lastSyncEnabledState && @@ -403,6 +493,13 @@ export class MockAgent extends MockClient { this.client.logger.info(`Decided to rename file ${file} to ${newName}`); this.doNotTouchWhileOffline.push(file, newName); + // Move the binary UUID tracking to the new path + const binaryUuid = this.binaryUuidByFile.get(file); + if (binaryUuid !== undefined) { + this.binaryUuidByFile.delete(file); + this.binaryUuidByFile.set(newName, binaryUuid); + } + return this.rename(file, newName, { ignoreSlowFileEvents: true }); } @@ -443,7 +540,7 @@ export class MockAgent extends MockClient { ); } - // Binary file update — complete replacement (last-write-wins) + // Binary file update — complete replacement (last-write-wins for updates) private async updateBinaryFileAction(): Promise { const files = (await this.listFilesRecursively()).filter((f) => f.endsWith(".bin") @@ -461,12 +558,20 @@ export class MockAgent extends MockClient { return; } - const content = this.getBinaryContent(); + const { uuid, bytes } = this.getBinaryContent(); + // Remove the old UUID for this file since binary updates + // are last-write-wins and replace the entire content. + const oldUuid = this.binaryUuidByFile.get(file); + if (oldUuid !== undefined) { + const idx = this.writtenBinaryContents.indexOf(oldUuid); + if (idx !== -1) this.writtenBinaryContents.splice(idx, 1); + } + this.binaryUuidByFile.set(file, uuid); this.client.logger.info( `Decided to update binary file ${file}` ); this.doNotTouchWhileOffline.push(file); - this.files.set(file, content); + this.files.set(file, bytes); this.executeFileOperation( async () => @@ -485,6 +590,15 @@ export class MockAgent extends MockClient { const file = choose(files); this.client.logger.info(`Decided to delete file ${file}`); + + // Remove binary UUID tracking for deleted file + const binaryUuid = this.binaryUuidByFile.get(file); + if (binaryUuid !== undefined) { + this.binaryUuidByFile.delete(file); + const idx = this.writtenBinaryContents.indexOf(binaryUuid); + if (idx !== -1) this.writtenBinaryContents.splice(idx, 1); + } + return this.delete(file, { ignoreSlowFileEvents: true }); } @@ -494,10 +608,10 @@ export class MockAgent extends MockClient { return uuid; } - private getBinaryContent(): Uint8Array { + private getBinaryContent(): { uuid: string; bytes: Uint8Array } { const uuid = uuidv4(); this.writtenBinaryContents.push(uuid); - return new TextEncoder().encode(`BINARY:${uuid}`); + return { uuid, bytes: new TextEncoder().encode(`BINARY:${uuid}`) }; } private getFileName(): string { diff --git a/frontend/test-client/src/cli.ts b/frontend/test-client/src/cli.ts index 1663073b..3150d8fd 100644 --- a/frontend/test-client/src/cli.ts +++ b/frontend/test-client/src/cli.ts @@ -6,6 +6,7 @@ import { sleep } from "./utils/sleep"; import { v4 as uuidv4 } from "uuid"; import { randomCasing } from "./utils/random-casing"; import { TimeoutError } from "./utils/with-timeout"; +import { TestErrorTracker } from "./utils/test-error-tracker"; const TEST_ITERATIONS = 5; const MAX_INITIAL_DOCS = 10; @@ -19,6 +20,23 @@ let doResets = false; const logger = new Logger(); debugging.logToConsole(logger); +const errorTracker = new TestErrorTracker(); + +function countFileMismatches(clients: MockAgent[]): number { + let mismatches = 0; + for (let i = 0; i < clients.length - 1; i++) { + const aFiles = new Set(clients[i].getFileList()); + const bFiles = new Set(clients[i + 1].getFileList()); + for (const f of aFiles) { + if (!bFiles.has(f)) mismatches++; + } + for (const f of bFiles) { + if (!aFiles.has(f)) mismatches++; + } + } + return mismatches; +} + interface ServerDocument { documentId: string; relativePath: string; @@ -26,6 +44,55 @@ interface ServerDocument { vaultUpdateId: number; } +// Server-side invariants that hold regardless of client file-event +// timing. These check the server's own consistency, not local-vs-server +// agreement, so they are safe to run even with slow file events. +async function assertServerSideConsistency( + settings: Partial +): Promise { + assert(settings.vaultName !== undefined, "vaultName is required"); + assert(settings.token !== undefined, "token is required"); + + const vaultName = encodeURIComponent(settings.vaultName.trim()); + const baseUrl = `${settings.remoteUri}/vaults/${vaultName}`; + const headers = { + authorization: `Bearer ${settings.token.trim()}` + }; + + const response = await fetch(`${baseUrl}/documents`, { headers }); + // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion + const result = (await response.json()) as { + latestDocuments: ServerDocument[]; + }; + + const serverDocs = result.latestDocuments.filter((d) => !d.isDeleted); + + // No two non-deleted documents should share the same path + const pathCounts = new Map(); + for (const doc of serverDocs) { + const count = pathCounts.get(doc.relativePath) ?? 0; + pathCounts.set(doc.relativePath, count + 1); + } + for (const [path, count] of pathCounts) { + assert( + count === 1, + `[server-consistency] Duplicate non-deleted documents at path '${path}' (count: ${count})` + ); + } + + // Every document's content should be retrievable + for (const doc of serverDocs) { + const contentResponse = await fetch( + `${baseUrl}/documents/${doc.documentId}/versions/${doc.vaultUpdateId}/content`, + { headers } + ); + assert( + contentResponse.ok, + `[server-consistency] Failed to fetch content for '${doc.relativePath}' (id: ${doc.documentId}): ${contentResponse.status}` + ); + } +} + async function assertServerStateConsistency( agent: MockAgent, settings: Partial @@ -94,7 +161,6 @@ async function assertServerStateConsistency( async function runTest({ agentCount, - concurrency, iterations, doDeletes, useResets, @@ -102,7 +168,6 @@ async function runTest({ jitterScaleInSeconds }: { agentCount: number; - concurrency: number; iterations: number; doDeletes: boolean; useResets: boolean; @@ -111,8 +176,9 @@ async function runTest({ }): Promise { slowFileEvents = useSlowFileEvents; doResets = useResets; + errorTracker.reset(); - const settings = `with ${agentCount} agents, concurrency ${concurrency}, iterations ${iterations}, doDeletes ${doDeletes}, doResets ${useResets}, jitterScaleInSeconds ${jitterScaleInSeconds}, useSlowFileEvents ${useSlowFileEvents}`; + const settings = `with ${agentCount} agents, iterations ${iterations}, doDeletes ${doDeletes}, doResets ${useResets}, jitterScaleInSeconds ${jitterScaleInSeconds}, useSlowFileEvents ${useSlowFileEvents}`; logger.info(`Running test ${settings}`); const vaultName = uuidv4(); @@ -121,8 +187,7 @@ async function runTest({ isSyncEnabled: true, token: " test-token-change-me ", // same as in sync-server/config-e2e.yml with spaces vaultName: randomCasing(vaultName) + (Math.random() > 0.5 ? " " : ""), // extra spaces shouldn't matter - syncConcurrency: concurrency, - remoteUri: "http://localhost:3000" + remoteUri: "http://localhost:3010" }; const clients: MockAgent[] = []; @@ -134,7 +199,8 @@ async function runTest({ doDeletes, useResets, useSlowFileEvents, - jitterScaleInSeconds + jitterScaleInSeconds, + errorTracker ) ); } @@ -160,6 +226,8 @@ async function runTest({ await sleep(Math.random() * 200); } + errorTracker.checkAndThrow(); + logger.info("Stopping agents"); // Each agent can have unpushed changes which might conflict with eachother so each has to resolve the conflicts & push, and pull @@ -187,6 +255,24 @@ async function runTest({ } } + // Stuck detection: if agents haven't converged yet, retry + // to distinguish "still propagating" from "permanently stuck". + if (!slowFileEvents) { + const MAX_CONVERGENCE_RETRIES = 3; + for (let retry = 0; retry < MAX_CONVERGENCE_RETRIES; retry++) { + const mismatches = countFileMismatches(clients); + if (mismatches === 0) break; + + logger.info( + `Convergence retry ${retry + 1}/${MAX_CONVERGENCE_RETRIES}: ${mismatches} file mismatches, waiting 5s...` + ); + await sleep(5000); + for (const client of clients) { + await client.waitUntilSynced(); + } + } + } + // then we need a second pass to ensure that all agents pull the same state for (const client of clients) { try { @@ -200,6 +286,7 @@ async function runTest({ } logger.info("Agents finished successfully"); + errorTracker.checkAndThrow(); clients.slice(0, -1).forEach((client, i) => { logger.info( @@ -227,9 +314,21 @@ async function runTest({ ); }); - logger.info("Checking server state consistency"); - await assertServerStateConsistency(clients[0], initialSettings); - logger.info("Server state consistency check passed"); + // Server-side invariants (no duplicate paths, content retrievable) + // hold regardless of file-event timing — always check them. + logger.info("Checking server-side consistency"); + await assertServerSideConsistency(initialSettings); + logger.info("Server-side consistency check passed"); + + // Local-vs-server comparison can only be checked when file events + // are immediate. With slow events, operations can timeout before + // the local state fully converges with the server, leaving + // local-only files (from deconfliction) that were never uploaded. + if (!slowFileEvents) { + logger.info("Checking local-server state consistency"); + await assertServerStateConsistency(clients[0], initialSettings); + logger.info("Local-server state consistency check passed"); + } logger.info(`Test passed ${settings}`); } catch (err) { @@ -242,7 +341,6 @@ async function runTests(): Promise { for (let i = 0; i < TEST_ITERATIONS; i++) { await runTest({ agentCount: 2, - concurrency: 16, iterations: 100, doDeletes: true, useResets: true, @@ -251,24 +349,62 @@ async function runTests(): Promise { }); for (const useSlowFileEvents of [true, false]) { - for (const concurrency of [ - 16, - 1 // test with concurrency 1 to check for deadlocks - ]) { - for (const doDeletes of [false, true]) { - await runTest({ - agentCount: 2, - concurrency, - iterations: 100, - doDeletes, - useResets: false, - useSlowFileEvents, - jitterScaleInSeconds: 0.75 - }); - } + for (const doDeletes of [false, true]) { + await runTest({ + agentCount: 2, + iterations: 100, + doDeletes, + useResets: false, + useSlowFileEvents, + jitterScaleInSeconds: 0.75 + }); } } } + + // Multi-agent tests (once per process, not repeated TEST_ITERATIONS times) + await runTest({ + agentCount: 3, + iterations: 75, + doDeletes: true, + useResets: false, + useSlowFileEvents: false, + jitterScaleInSeconds: 0.75 + }); + await runTest({ + agentCount: 3, + iterations: 75, + doDeletes: false, + useResets: true, + useSlowFileEvents: false, + jitterScaleInSeconds: 0.75 + }); + await runTest({ + agentCount: 4, + iterations: 50, + doDeletes: true, + useResets: false, + useSlowFileEvents: false, + jitterScaleInSeconds: 0.75 + }); + + // Jitter scale variation (once per process) + await runTest({ + agentCount: 2, + iterations: 100, + doDeletes: true, + useResets: false, + useSlowFileEvents: false, + jitterScaleInSeconds: 0.1 + }); + await runTest({ + agentCount: 2, + iterations: 100, + doDeletes: true, + useResets: true, + useSlowFileEvents: false, + jitterScaleInSeconds: 1.5 + }); } process.on("uncaughtException", (error) => { diff --git a/frontend/test-client/src/utils/test-error-tracker.ts b/frontend/test-client/src/utils/test-error-tracker.ts new file mode 100644 index 00000000..0702ea2e --- /dev/null +++ b/frontend/test-client/src/utils/test-error-tracker.ts @@ -0,0 +1,34 @@ +/** + * Centralized error tracking for E2E tests. Replaces the fire-and-forget + * `sleep(100).then(() => process.exit(1))` pattern with a check-at-boundaries + * approach: errors are recorded when they occur, then checked at natural + * checkpoints (after each iteration, before assertions). + * + * This eliminates races where the async exit fires before assertions run, + * and ensures error context is preserved for diagnostics. + */ +export class TestErrorTracker { + private firstError: { agentName: string; message: string } | null = null; + + public recordError(agentName: string, message: string): void { + this.firstError ??= { agentName, message }; + } + + /** + * If an error was recorded, throw it. Call this at natural checkpoints: + * after each iteration, before assertions, etc. + */ + public checkAndThrow(): void { + if (this.firstError !== null) { + const { agentName, message } = this.firstError; + throw new Error( + `ERROR-level log from ${agentName}: ${message}` + ); + } + } + + /** Clear recorded errors. Call at the start of each test. */ + public reset(): void { + this.firstError = null; + } +} diff --git a/scripts/e2e.sh b/scripts/e2e.sh index d0e23260..f9e84a69 100755 --- a/scripts/e2e.sh +++ b/scripts/e2e.sh @@ -19,6 +19,36 @@ process_count=$1 mkdir -p logs +# Build and restart the server +echo "Building server..." +cd sync-server +cargo build --release + +# Kill any existing server process +echo "Stopping existing server..." +pkill -f "sync_server" 2>/dev/null || true +sleep 1 + +# Clean databases +echo "Cleaning databases..." +rm -rf databases + +# Start the server in the background +echo "Starting server..." +./target/release/sync_server config-e2e.yml & +server_pid=$! +echo "Server started with PID: $server_pid" + +# Ensure server is killed on script exit +cleanup_server() { + echo "Stopping server (PID: $server_pid)..." + kill $server_pid 2>/dev/null || true + wait $server_pid 2>/dev/null || true +} +trap cleanup_server EXIT + +cd .. + cd frontend npm ci npm run build @@ -27,18 +57,10 @@ npm run build pids=() for i in $(seq 1 $process_count); do - # Create a named pipe for this process - pipe="/tmp/vaultlink_pipe_$$_$i" - mkfifo "$pipe" - - # Start the node process writing to the pipe - node test-client/dist/cli.js > "$pipe" 2>&1 & + node test-client/dist/cli.js > "../logs/log_${i}.log" 2>&1 & pid=$! pids+=($pid) - echo "Started process $i with PID: $pid" - - # Read from pipe, prefix with PID - (sed "s/^/[PID $pid] /" < "$pipe" > "../logs/log_${i}.log"; rm "$pipe") & + echo "Started process $i with PID: $pid (log: logs/log_${i}.log)" done cd .. @@ -66,10 +88,25 @@ print_failed_log() { return 1 } -echo "Monitoring $process_count processes" +E2E_TIMEOUT=${2:-3600} +start_time=$(date +%s) +echo "Monitoring $process_count processes (timeout: ${E2E_TIMEOUT}s)" # Monitor processes while true; do + # Script-level timeout to prevent indefinite hangs + current_time=$(date +%s) + elapsed=$((current_time - start_time)) + if [ $elapsed -ge $E2E_TIMEOUT ]; then + echo "E2E timeout reached (${E2E_TIMEOUT}s). Killing remaining processes." + for pid in "${pids[@]}"; do + if [ -n "$pid" ]; then + kill $pid 2>/dev/null || true + fi + done + exit 1 + fi + if print_failed_log; then # Kill remaining processes for pid in "${pids[@]}"; do diff --git a/scripts/utils/wait-for-server.sh b/scripts/utils/wait-for-server.sh index 7824c405..71103477 100755 --- a/scripts/utils/wait-for-server.sh +++ b/scripts/utils/wait-for-server.sh @@ -2,14 +2,14 @@ set -e -SERVER_URL="http://localhost:3000" +SERVER_URL="http://localhost:3010" MAX_RETRIES=30 RETRY_INTERVAL_IN_SECONDS=5 echo "Waiting for $SERVER_URL to become available..." count=0 while [ $count -lt $MAX_RETRIES ]; do - if curl -s -f -o /dev/null $SERVER_URL; then + if curl -s -o /dev/null $SERVER_URL; then echo "$SERVER_URL is now available!" break fi diff --git a/sync-server/Cargo.lock b/sync-server/Cargo.lock index b3da1486..ce4b125d 100644 --- a/sync-server/Cargo.lock +++ b/sync-server/Cargo.lock @@ -337,10 +337,11 @@ checksum = "325918d6fe32f23b19878fe4b34794ae41fc19ddbe53b10571a4874d44ffd39b" [[package]] name = "cc" -version = "1.2.2" +version = "1.2.57" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f34d93e62b03caf570cccc334cbc6c2fceca82f39211051345108adcba3eebdc" +checksum = "7a0dd1ca384932ff3641c8718a02769f1698e7563dc6974ffd03346116310423" dependencies = [ + "find-msvc-tools", "shlex", ] @@ -350,6 +351,12 @@ version = "1.0.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "9555578bc9e57714c812a1f84e4fc5b4d21fcb063490c624de019f7464c91268" +[[package]] +name = "cfg_aliases" +version = "0.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724" + [[package]] name = "chrono" version = "0.4.41" @@ -624,6 +631,12 @@ version = "2.2.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "486f806e73c5707928240ddc295403b1b93c96a02038563881c4a2fd84b81ac4" +[[package]] +name = "find-msvc-tools" +version = "0.1.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582" + [[package]] name = "flume" version = "0.11.1" @@ -773,8 +786,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7" dependencies = [ "cfg-if", + "js-sys", "libc", "wasi 0.11.0+wasi-snapshot-preview1", + "wasm-bindgen", ] [[package]] @@ -957,6 +972,24 @@ dependencies = [ "pin-project-lite", "smallvec", "tokio", + "want", +] + +[[package]] +name = "hyper-rustls" +version = "0.27.7" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e3c93eb611681b207e1fe55d5a71ecf91572ec8a6705cdb6857f7d8d5242cf58" +dependencies = [ + "http", + "hyper", + "hyper-util", + "rustls", + "rustls-pki-types", + "tokio", + "tokio-rustls", + "tower-service", + "webpki-roots 1.0.6", ] [[package]] @@ -966,13 +999,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "df2dcfbe0677734ab2f3ffa7fa7bfd4706bfdc1ef393f2ee30184aed67e631b4" dependencies = [ "bytes", + "futures-channel", "futures-util", "http", "http-body", "hyper", "pin-project-lite", + "socket2 0.5.10", "tokio", "tower-service", + "tracing", ] [[package]] @@ -1153,6 +1189,12 @@ dependencies = [ "hashbrown", ] +[[package]] +name = "ipnet" +version = "2.12.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2" + [[package]] name = "is_terminal_polyfill" version = "1.70.1" @@ -1272,6 +1314,16 @@ version = "0.3.17" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a" +[[package]] +name = "mime_guess" +version = "2.0.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f7c44f8e672c00fe5308fa235f821cb4198414e1c77935c1ab6948d3fd78550e" +dependencies = [ + "mime", + "unicase", +] + [[package]] name = "miniz_oxide" version = "0.8.0" @@ -1505,6 +1557,58 @@ dependencies = [ "unicode-ident", ] +[[package]] +name = "quinn" +version = "0.11.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "62e96808277ec6f97351a2380e6c25114bc9e67037775464979f3037c92d05ef" +dependencies = [ + "bytes", + "pin-project-lite", + "quinn-proto", + "quinn-udp", + "rustc-hash", + "rustls", + "socket2 0.5.10", + "thiserror 2.0.18", + "tokio", + "tracing", +] + +[[package]] +name = "quinn-proto" +version = "0.11.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a2fe5ef3495d7d2e377ff17b1a8ce2ee2ec2a18cde8b6ad6619d65d0701c135d" +dependencies = [ + "bytes", + "getrandom 0.2.15", + "rand 0.8.5", + "ring", + "rustc-hash", + "rustls", + "rustls-pki-types", + "slab", + "thiserror 2.0.18", + "tinyvec", + "tracing", + "web-time", +] + +[[package]] +name = "quinn-udp" +version = "0.5.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "addec6a0dcad8a8d96a771f815f0eaf55f9d1805756410b39f5fa81332574cbd" +dependencies = [ + "cfg_aliases", + "libc", + "once_cell", + "socket2 0.6.0", + "tracing", + "windows-sys 0.59.0", +] + [[package]] name = "quote" version = "1.0.37" @@ -1582,12 +1686,12 @@ dependencies = [ [[package]] name = "reconcile-text" -version = "0.8.0" +version = "0.11.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "599cf9539996a2a19e501110404c59ba62f4974009f8fb864a8b7151c15ee5a5" +checksum = "52e0cf361887ea64c479ca871c1170dda761f84e122f2616b5579906a38d7557" dependencies = [ "serde", - "thiserror 2.0.17", + "thiserror 2.0.18", ] [[package]] @@ -1628,6 +1732,63 @@ version = "0.8.5" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c" +[[package]] +name = "reqwest" +version = "0.12.12" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "43e734407157c3c2034e0258f5e4473ddb361b1e85f95a66690d67264d7cd1da" +dependencies = [ + "base64 0.22.1", + "bytes", + "futures-core", + "futures-util", + "http", + "http-body", + "http-body-util", + "hyper", + "hyper-rustls", + "hyper-util", + "ipnet", + "js-sys", + "log", + "mime", + "once_cell", + "percent-encoding", + "pin-project-lite", + "quinn", + "rustls", + "rustls-pemfile", + "rustls-pki-types", + "serde", + "serde_json", + "serde_urlencoded", + "sync_wrapper", + "tokio", + "tokio-rustls", + "tower", + "tower-service", + "url", + "wasm-bindgen", + "wasm-bindgen-futures", + "web-sys", + "webpki-roots 0.26.11", + "windows-registry", +] + +[[package]] +name = "ring" +version = "0.17.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7" +dependencies = [ + "cc", + "cfg-if", + "getrandom 0.2.15", + "libc", + "untrusted", + "windows-sys 0.52.0", +] + [[package]] name = "rsa" version = "0.9.7" @@ -1648,12 +1809,52 @@ dependencies = [ "zeroize", ] +[[package]] +name = "rust-embed" +version = "8.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "04113cb9355a377d83f06ef1f0a45b8ab8cd7d8b1288160717d66df5c7988d27" +dependencies = [ + "rust-embed-impl", + "rust-embed-utils", + "walkdir", +] + +[[package]] +name = "rust-embed-impl" +version = "8.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "da0902e4c7c8e997159ab384e6d0fc91c221375f6894346ae107f47dd0f3ccaa" +dependencies = [ + "proc-macro2", + "quote", + "rust-embed-utils", + "syn 2.0.90", + "walkdir", +] + +[[package]] +name = "rust-embed-utils" +version = "8.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5bcdef0be6fe7f6fa333b1073c949729274b05f123a0ad7efcb8efd878e5c3b1" +dependencies = [ + "sha2", + "walkdir", +] + [[package]] name = "rustc-demangle" version = "0.1.24" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f" +[[package]] +name = "rustc-hash" +version = "2.1.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d" + [[package]] name = "rustix" version = "0.38.41" @@ -1667,6 +1868,50 @@ dependencies = [ "windows-sys 0.52.0", ] +[[package]] +name = "rustls" +version = "0.23.37" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "758025cb5fccfd3bc2fd74708fd4682be41d99e5dff73c377c0646c6012c73a4" +dependencies = [ + "once_cell", + "ring", + "rustls-pki-types", + "rustls-webpki", + "subtle", + "zeroize", +] + +[[package]] +name = "rustls-pemfile" +version = "2.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dce314e5fee3f39953d46bb63bb8a46d40c2f8fb7cc5a3b6cab2bde9721d6e50" +dependencies = [ + "rustls-pki-types", +] + +[[package]] +name = "rustls-pki-types" +version = "1.14.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "be040f8b0a225e40375822a563fa9524378b9d63112f53e19ffff34df5d33fdd" +dependencies = [ + "web-time", + "zeroize", +] + +[[package]] +name = "rustls-webpki" +version = "0.103.9" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d7df23109aa6c1567d1c575b9952556388da57401e4ace1d15f79eedad0d8f53" +dependencies = [ + "ring", + "rustls-pki-types", + "untrusted", +] + [[package]] name = "rustversion" version = "1.0.18" @@ -1679,6 +1924,15 @@ version = "1.0.18" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f" +[[package]] +name = "same-file" +version = "1.0.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502" +dependencies = [ + "winapi-util", +] + [[package]] name = "sanitize-filename" version = "0.6.0" @@ -1846,6 +2100,16 @@ dependencies = [ "serde", ] +[[package]] +name = "socket2" +version = "0.5.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e22376abed350d73dd1cd119b57ffccad95b4e585a7cda43e286245ce23c0678" +dependencies = [ + "libc", + "windows-sys 0.52.0", +] + [[package]] name = "socket2" version = "0.6.0" @@ -1916,7 +2180,7 @@ dependencies = [ "serde_json", "sha2", "smallvec", - "thiserror 2.0.17", + "thiserror 2.0.18", "tokio", "tokio-stream", "tracing", @@ -2000,7 +2264,7 @@ dependencies = [ "smallvec", "sqlx-core", "stringprep", - "thiserror 2.0.17", + "thiserror 2.0.18", "tracing", "uuid", "whoami", @@ -2039,7 +2303,7 @@ dependencies = [ "smallvec", "sqlx-core", "stringprep", - "thiserror 2.0.17", + "thiserror 2.0.18", "tracing", "uuid", "whoami", @@ -2065,7 +2329,7 @@ dependencies = [ "serde", "serde_urlencoded", "sqlx-core", - "thiserror 2.0.17", + "thiserror 2.0.18", "tracing", "url", "uuid", @@ -2136,15 +2400,18 @@ dependencies = [ "futures", "humantime-serde", "log", + "mime_guess", "rand 0.9.0", "reconcile-text", "regex", + "reqwest", + "rust-embed", "sanitize-filename", "serde", "serde_json", "serde_yaml", "sqlx", - "thiserror 2.0.17", + "thiserror 2.0.18", "tokio", "tower-http", "tracing", @@ -2158,6 +2425,9 @@ name = "sync_wrapper" version = "1.0.2" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263" +dependencies = [ + "futures-core", +] [[package]] name = "synstructure" @@ -2203,11 +2473,11 @@ dependencies = [ [[package]] name = "thiserror" -version = "2.0.17" +version = "2.0.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8" +checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4" dependencies = [ - "thiserror-impl 2.0.17", + "thiserror-impl 2.0.18", ] [[package]] @@ -2223,9 +2493,9 @@ dependencies = [ [[package]] name = "thiserror-impl" -version = "2.0.17" +version = "2.0.18" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913" +checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5" dependencies = [ "proc-macro2", "quote", @@ -2276,10 +2546,9 @@ dependencies = [ "bytes", "libc", "mio", - "parking_lot", "pin-project-lite", "signal-hook-registry", - "socket2", + "socket2 0.6.0", "tokio-macros", "windows-sys 0.61.2", ] @@ -2295,6 +2564,16 @@ dependencies = [ "syn 2.0.90", ] +[[package]] +name = "tokio-rustls" +version = "0.26.4" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1729aa945f29d91ba541258c8df89027d5792d85a8841fb65e8bf0f4ede4ef61" +dependencies = [ + "rustls", + "tokio", +] + [[package]] name = "tokio-stream" version = "0.1.17" @@ -2426,6 +2705,12 @@ dependencies = [ "tracing-log", ] +[[package]] +name = "try-lock" +version = "0.2.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b" + [[package]] name = "ts-rs" version = "10.1.0" @@ -2434,7 +2719,7 @@ checksum = "e640d9b0964e9d39df633548591090ab92f7a4567bc31d3891af23471a3365c6" dependencies = [ "chrono", "lazy_static", - "thiserror 2.0.17", + "thiserror 2.0.18", "ts-rs-macros", "uuid", ] @@ -2481,6 +2766,12 @@ version = "0.10.4" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "f720def6ce1ee2fc44d40ac9ed6d3a59c361c80a75a7aa8e75bb9baed31cf2ea" +[[package]] +name = "unicase" +version = "2.9.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dbc4bc3a9f746d862c45cb89d705aa10f187bb96c76001afab07a0d35ce60142" + [[package]] name = "unicode-bidi" version = "0.3.17" @@ -2514,6 +2805,12 @@ version = "0.2.11" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861" +[[package]] +name = "untrusted" +version = "0.9.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1" + [[package]] name = "url" version = "2.5.4" @@ -2577,6 +2874,25 @@ version = "0.9.5" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a" +[[package]] +name = "walkdir" +version = "2.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b" +dependencies = [ + "same-file", + "winapi-util", +] + +[[package]] +name = "want" +version = "0.3.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e" +dependencies = [ + "try-lock", +] + [[package]] name = "wasi" version = "0.11.0+wasi-snapshot-preview1" @@ -2623,6 +2939,19 @@ dependencies = [ "wasm-bindgen-shared", ] +[[package]] +name = "wasm-bindgen-futures" +version = "0.4.49" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "38176d9b44ea84e9184eff0bc34cc167ed044f816accfe5922e54d84cf48eca2" +dependencies = [ + "cfg-if", + "js-sys", + "once_cell", + "wasm-bindgen", + "web-sys", +] + [[package]] name = "wasm-bindgen-macro" version = "0.2.99" @@ -2652,6 +2981,44 @@ version = "0.2.99" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "943aab3fdaaa029a6e0271b35ea10b72b943135afe9bffca82384098ad0e06a6" +[[package]] +name = "web-sys" +version = "0.3.76" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "04dd7223427d52553d3702c004d3b2fe07c148165faa56313cb00211e31c12bc" +dependencies = [ + "js-sys", + "wasm-bindgen", +] + +[[package]] +name = "web-time" +version = "1.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb" +dependencies = [ + "js-sys", + "wasm-bindgen", +] + +[[package]] +name = "webpki-roots" +version = "0.26.11" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9" +dependencies = [ + "webpki-roots 1.0.6", +] + +[[package]] +name = "webpki-roots" +version = "1.0.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "22cfaf3c063993ff62e73cb4311efde4db1efb31ab78a3e5c457939ad5cc0bed" +dependencies = [ + "rustls-pki-types", +] + [[package]] name = "whoami" version = "1.5.2" @@ -2692,6 +3059,36 @@ version = "0.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5" +[[package]] +name = "windows-registry" +version = "0.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "e400001bb720a623c1c69032f8e3e4cf09984deec740f007dd2b03ec864804b0" +dependencies = [ + "windows-result", + "windows-strings", + "windows-targets 0.52.6", +] + +[[package]] +name = "windows-result" +version = "0.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e" +dependencies = [ + "windows-targets 0.52.6", +] + +[[package]] +name = "windows-strings" +version = "0.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10" +dependencies = [ + "windows-result", + "windows-targets 0.52.6", +] + [[package]] name = "windows-sys" version = "0.48.0" diff --git a/sync-server/Cargo.toml b/sync-server/Cargo.toml index 6f1bc270..ee2d8276 100644 --- a/sync-server/Cargo.toml +++ b/sync-server/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "sync_server" -rust-version = "1.92.0" +rust-version = "1.94.0" authors = ["Andras Schmelczer "] edition = "2024" license = "MIT" @@ -10,7 +10,7 @@ version = "0.14.0" [dependencies] serde = { version = "1.0.219", default-features = false, features = ["derive"] } thiserror = { version = "2.0.12", default-features = false } -tokio = { version = "1.48.0", features = ["full"]} +tokio = { version = "1.48.0", features = ["macros", "rt-multi-thread", "sync", "time", "net", "fs", "signal"]} uuid = { version = "1.16.0", features = ["v4", "serde"] } log = { version = "0.4.28" } anyhow = { version = "1.0.100", features = ["backtrace"] } @@ -33,7 +33,10 @@ serde_json = "1.0.140" bimap = "0.6.3" ts-rs = { version = "10.1", features = ["uuid-impl", "chrono-impl"] } base64 = "0.22.1" -reconcile-text = { version = "0.8.0", features = ["serde"] } +reconcile-text = { version = "0.11.0", features = ["serde"] } +rust-embed = "8.5" +mime_guess = "2.0" +reqwest = { version = "0.12", default-features = false, features = ["rustls-tls"] } [profile.release] codegen-units = 1 diff --git a/sync-server/build.rs b/sync-server/build.rs index d5068697..53bd111b 100644 --- a/sync-server/build.rs +++ b/sync-server/build.rs @@ -1,5 +1,16 @@ -// generated by `sqlx migrate build-script` fn main() { // trigger recompilation when a new migration is added println!("cargo:rerun-if-changed=migrations"); + + // Ensure the history-ui dist directory exists so rust-embed can compile + // even when the frontend hasn't been built yet. + let dist_path = std::path::Path::new("../frontend/history-ui/dist"); + if !dist_path.exists() { + std::fs::create_dir_all(dist_path).expect("Failed to create history-ui dist directory"); + std::fs::write( + dist_path.join("index.html"), + "

Run npm run build -w history-ui first.

", + ) + .expect("Failed to write placeholder index.html"); + } } diff --git a/sync-server/config-e2e.yml b/sync-server/config-e2e.yml index 1f235b01..3d2c40ed 100644 --- a/sync-server/config-e2e.yml +++ b/sync-server/config-e2e.yml @@ -1,12 +1,14 @@ database: databases_directory_path: databases - max_connections_per_vault: 12 + max_connections_per_vault: 64 cursor_timeout: 1m server: host: 0.0.0.0 - port: 3000 + port: 3010 max_body_size_mb: 512 max_clients_per_vault: 256 + broadcast_channel_capacity: 1024 + dev_proxy_url: "http://localhost:5173" response_timeout: 30m mergeable_file_extensions: - md diff --git a/sync-server/rust-toolchain.toml b/sync-server/rust-toolchain.toml index e2cf576b..567721ef 100644 --- a/sync-server/rust-toolchain.toml +++ b/sync-server/rust-toolchain.toml @@ -1,5 +1,5 @@ [toolchain] -channel = "1.92.0" +channel = "1.94.0" targets = [ "x86_64-unknown-linux-gnu", "x86_64-unknown-linux-musl", diff --git a/sync-server/src/app_state.rs b/sync-server/src/app_state.rs index 2019e08e..2b29e387 100644 --- a/sync-server/src/app_state.rs +++ b/sync-server/src/app_state.rs @@ -2,6 +2,11 @@ pub mod cursors; pub mod database; pub mod websocket; +use std::sync::{ + Arc, + atomic::AtomicUsize, +}; + use anyhow::Result; use cursors::Cursors; use database::Database; @@ -15,21 +20,34 @@ pub struct AppState { pub database: Database, pub cursors: Cursors, pub broadcasts: Broadcasts, + /// Tracks WebSocket connections that have upgraded but not yet completed + /// the authentication handshake. + pub pending_ws_connections: Arc, + /// Send on this channel to stop background tasks (cursor cleanup, + /// idle-pool cleanup). Held by `AppState` so dropping it also + /// triggers shutdown. + #[allow(dead_code)] + shutdown_tx: Arc>, } impl AppState { pub async fn try_new(config: Config) -> Result { + let (shutdown_tx, shutdown_rx) = tokio::sync::watch::channel(()); + let broadcasts = Broadcasts::new(&config.server); - let database = Database::try_new(&config.database, &broadcasts).await?; + let database = + Database::try_new(&config.database, &broadcasts, shutdown_rx.clone()).await?; let cursors: Cursors = Cursors::new(&config.database, &broadcasts); - Cursors::start_background_task(cursors.clone()); + Cursors::start_background_task(cursors.clone(), shutdown_rx); Ok(Self { config, database, cursors, broadcasts, + pending_ws_connections: Arc::new(AtomicUsize::new(0)), + shutdown_tx: Arc::new(shutdown_tx), }) } } diff --git a/sync-server/src/app_state/cursors.rs b/sync-server/src/app_state/cursors.rs index d083e1ac..8a4bd38c 100644 --- a/sync-server/src/app_state/cursors.rs +++ b/sync-server/src/app_state/cursors.rs @@ -42,7 +42,9 @@ impl Cursors { ) { let mut vault_to_cursors = self.vault_to_cursors.lock().await; - let all_device_cursors = vault_to_cursors.entry(vault_id).or_insert_with(Vec::new); + let all_device_cursors = vault_to_cursors + .entry(vault_id.clone()) + .or_insert_with(Vec::new); all_device_cursors.retain(|c| &c.client_cursors.device_id != device_id); all_device_cursors.push(ClientCursorsWithTimeToLive::new(ClientCursors { @@ -51,8 +53,11 @@ impl Cursors { documents_with_cursors: document_to_cursors, })); - drop(vault_to_cursors); // Explicitly drop the lock before broadcasting to avoid deadlock - self.broadcast_cursors().await; + // IMPORTANT: Drop the lock BEFORE calling broadcast_cursors_for_vault, + // which re-acquires the same lock internally. Holding the lock here + // while calling broadcast would cause a deadlock. + drop(vault_to_cursors); + self.broadcast_cursors_for_vault(&vault_id).await; } pub async fn get_cursors(&self, vault_id: &VaultId) -> Vec { @@ -69,45 +74,83 @@ impl Cursors { .unwrap_or_default() } - pub fn start_background_task(self) { + pub fn start_background_task(self, mut shutdown: tokio::sync::watch::Receiver<()>) { tokio::spawn(async move { loop { - self.remove_expired_cursors().await; - tokio::time::sleep(Duration::from_secs(1)).await; + tokio::select! { + () = tokio::time::sleep(Duration::from_secs(1)) => { + self.remove_expired_cursors().await; + } + Ok(()) = shutdown.changed() => break, + } } }); } async fn remove_expired_cursors(&self) { - let mut vault_to_cursors = self.vault_to_cursors.lock().await; + let changed_vaults: Vec = { + let mut vault_to_cursors = self.vault_to_cursors.lock().await; - for (_vault_id, cursors) in vault_to_cursors.iter_mut() { - cursors.retain(|cursor| !cursor.is_expired(self.config.cursor_timeout)); + let mut changed = Vec::new(); + for (vault_id, cursors) in vault_to_cursors.iter_mut() { + let before = cursors.len(); + cursors.retain(|cursor| !cursor.is_expired(self.config.cursor_timeout)); + if cursors.len() != before { + changed.push(vault_id.clone()); + } + } + + // Remove empty vault entries to prevent unbounded growth + vault_to_cursors.retain(|_, cursors| !cursors.is_empty()); + + changed + }; + + for vault_id in &changed_vaults { + self.broadcast_cursors_for_vault(vault_id).await; } } - async fn broadcast_cursors(&self) { - let vault_to_cursors = self.vault_to_cursors.lock().await; + async fn broadcast_cursors_for_vault(&self, vault_id: &VaultId) { + let client_cursors: Vec = { + let vault_to_cursors = self.vault_to_cursors.lock().await; + vault_to_cursors + .get(vault_id) + .map(|cursors| cursors.iter().map(|c| c.client_cursors.clone()).collect()) + .unwrap_or_default() + }; - for (vault_id, cursors) in vault_to_cursors.iter() { - self.broadcasts - .send_document_update( - vault_id.clone(), - WebSocketServerMessageWithOrigin::new(WebSocketServerMessage::CursorPositions( - CursorPositionFromServer { - clients: cursors.iter().map(|c| c.client_cursors.clone()).collect(), - }, - )), - ) - .await; - } + self.broadcasts + .send_document_update( + vault_id.clone(), + WebSocketServerMessageWithOrigin::new(WebSocketServerMessage::CursorPositions( + CursorPositionFromServer { + clients: client_cursors, + }, + )), + ) + .await; } - pub async fn remove_cursors_of_device(&self, vault_id: &str, device_id: &str) { - let mut vault_to_cursors = self.vault_to_cursors.lock().await; + pub async fn remove_cursors_of_device(&self, vault_id: &VaultId, device_id: &DeviceId) { + let changed = { + let mut vault_to_cursors = self.vault_to_cursors.lock().await; - if let Some(cursors) = vault_to_cursors.get_mut(vault_id) { - cursors.retain(|c| c.client_cursors.device_id != device_id); + if let Some(cursors) = vault_to_cursors.get_mut(vault_id) { + let before = cursors.len(); + cursors.retain(|c| c.client_cursors.device_id != *device_id); + let changed = cursors.len() != before; + if cursors.is_empty() { + vault_to_cursors.remove(vault_id); + } + changed + } else { + false + } + }; + + if changed { + self.broadcast_cursors_for_vault(vault_id).await; } } } diff --git a/sync-server/src/app_state/database.rs b/sync-server/src/app_state/database.rs index d0565be7..944efe97 100644 --- a/sync-server/src/app_state/database.rs +++ b/sync-server/src/app_state/database.rs @@ -6,14 +6,29 @@ use log::info; use models::{ DocumentId, DocumentVersionWithoutContent, StoredDocumentVersion, VaultId, VaultUpdateId, }; -use sqlx::{ConnectOptions, sqlite::SqliteConnectOptions, types::chrono::Utc}; +use sqlx::{ConnectOptions, Connection, sqlite::SqliteConnectOptions, types::chrono::Utc}; pub mod models; -use sqlx::{Pool, Sqlite, sqlite::SqlitePoolOptions}; -use tokio::sync::Mutex; +use sqlx::{ + Pool, Sqlite, pool::PoolConnection, sqlite::SqliteConnection, sqlite::SqlitePoolOptions, +}; +use tokio::sync::{Mutex, OnceCell}; use tokio::time::Instant; use uuid::fmt::Hyphenated; +/// Row struct for vault history queries (used by `sqlx::query_as!`) +#[derive(Debug)] +struct VaultHistoryRow { + vault_update_id: models::VaultUpdateId, + document_id: models::DocumentId, + relative_path: String, + updated_date: chrono::DateTime, + is_deleted: bool, + user_id: String, + device_id: String, + content_size: Option, +} + use super::websocket::{ broadcasts::Broadcasts, models::{WebSocketServerMessage, WebSocketServerMessageWithOrigin, WebSocketVaultUpdate}, @@ -21,32 +36,98 @@ use super::websocket::{ use crate::config::database_config::DatabaseConfig; use crate::consts::IDLE_POOL_TIMEOUT; -#[derive(Clone)] -struct PoolWithTimestamp { - pool: Pool, - last_accessed: Instant, -} - -impl std::fmt::Debug for PoolWithTimestamp { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - f.debug_struct("PoolWithTimestamp") - .field("pool", &"Pool") - .field("last_accessed", &self.last_accessed) - .finish() - } +#[derive(Debug)] +struct VaultPool { + cell: Arc>>, + last_accessed: Mutex, } #[derive(Clone, Debug)] pub struct Database { config: DatabaseConfig, broadcasts: Broadcasts, - connection_pools: Arc>>, + connection_pools: Arc>>>, } -pub type Transaction<'a> = sqlx::Transaction<'a, Sqlite>; +/// A write transaction backed by a raw `BEGIN IMMEDIATE` instead of sqlx's +/// savepoint-based `Transaction`. This avoids the savepoint mismatch caused +/// by the old `END; BEGIN IMMEDIATE;` workaround. +pub struct WriteTransaction { + conn: Option>, +} + +impl WriteTransaction { + async fn new(pool: &Pool) -> Result { + let mut conn = pool + .acquire() + .await + .context("Cannot acquire connection for write transaction")?; + sqlx::query("BEGIN IMMEDIATE") + .execute(&mut *conn) + .await + .context("Cannot begin immediate transaction")?; + Ok(Self { conn: Some(conn) }) + } + + pub async fn commit(mut self) -> Result<()> { + if let Some(mut conn) = self.conn.take() { + sqlx::query("COMMIT") + .execute(&mut *conn) + .await + .context("Failed to commit transaction")?; + } + Ok(()) + } + + pub async fn rollback(mut self) -> Result<()> { + if let Some(mut conn) = self.conn.take() { + sqlx::query("ROLLBACK") + .execute(&mut *conn) + .await + .context("Failed to rollback transaction")?; + } + Ok(()) + } +} + +impl Drop for WriteTransaction { + fn drop(&mut self) { + if self.conn.is_some() { + // The connection is returned to the pool with an open transaction. + // The pool's `before_acquire` hook issues a ROLLBACK before + // handing it to the next consumer, so no async work is needed + // here. If the pool is being shut down, SQLite itself rolls back + // uncommitted transactions when the connection closes. + log::warn!("WriteTransaction dropped without commit or rollback"); + } + } +} + +impl std::ops::Deref for WriteTransaction { + type Target = SqliteConnection; + fn deref(&self) -> &Self::Target { + self.conn + .as_ref() + .expect("BUG: WriteTransaction dereferenced after being consumed") + .deref() + } +} + +impl std::ops::DerefMut for WriteTransaction { + fn deref_mut(&mut self) -> &mut Self::Target { + self.conn + .as_mut() + .expect("BUG: WriteTransaction dereferenced after being consumed") + .deref_mut() + } +} impl Database { - pub async fn try_new(config: &DatabaseConfig, broadcasts: &Broadcasts) -> Result { + pub async fn try_new( + config: &DatabaseConfig, + broadcasts: &Broadcasts, + shutdown: tokio::sync::watch::Receiver<()>, + ) -> Result { tokio::fs::create_dir_all(&config.databases_directory_path) .await .with_context(|| { @@ -71,13 +152,17 @@ impl Database { .trim_end_matches(".sqlite") .to_owned(); + Self::validate_vault_id(&vault)?; + let pool = Self::create_vault_database(config, &vault).await?; + let cell = Arc::new(OnceCell::new()); + cell.set(pool).expect("cell is new"); connection_pools.insert( vault.clone(), - PoolWithTimestamp { - pool, - last_accessed: Instant::now(), - }, + Arc::new(VaultPool { + cell, + last_accessed: Mutex::new(Instant::now()), + }), ); } info!("Database migrations applied"); @@ -88,8 +173,7 @@ impl Database { broadcasts: broadcasts.clone(), }; - // Start background task to cleanup idle connection pools - database.start_idle_pool_cleanup(); + database.start_idle_pool_cleanup(shutdown); Ok(database) } @@ -102,91 +186,128 @@ impl Database { .databases_directory_path .join(format!("{vault}.sqlite")); - let connection_options = SqliteConnectOptions::new() + // Database-level PRAGMAs (auto_vacuum, journal_mode) require a write + // lock and persist across connections. Set them once with a dedicated + // init connection so pool connections never need the write lock just to + // open. + let init_options = SqliteConnectOptions::new() .filename(file_name.clone()) .create_if_missing(true) .auto_vacuum(sqlx::sqlite::SqliteAutoVacuum::Incremental) - .busy_timeout(Duration::from_secs(30)) + .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal); + + // Run migrations on a dedicated connection, NOT through the pool. + // The pool's `before_acquire` hook issues ROLLBACK on every checkout, + // which can roll back the migration's bookkeeping transaction (the + // _sqlx_migrations INSERT) while the DDL (ALTER TABLE) has already + // auto-committed — leaving the migration in a dirty state. + // + // Uses `run_direct` instead of `run` because `run` takes + // `impl Acquire<'_>`, whose lifetime bound prevents the enclosing + // future from satisfying the `Send` requirement of axum handlers. + let mut init_conn = sqlx::SqliteConnection::connect_with(&init_options).await?; + sqlx::migrate!("src/app_state/database/migrations") + .run_direct(&mut init_conn) + .await + .context("Cannot run pending migrations")?; + drop(init_conn); + + // Pool connections only set per-connection PRAGMAs that don't require a + // write lock. journal_mode = WAL is a no-op on an already-WAL database. + let pool_options = SqliteConnectOptions::new() + .filename(file_name.clone()) .journal_mode(sqlx::sqlite::SqliteJournalMode::Wal) + .busy_timeout(Duration::from_secs(30)) .log_slow_statements(log::LevelFilter::Warn, Duration::from_secs(30)); let pool = SqlitePoolOptions::new() .max_connections(config.max_connections_per_vault) .acquire_slow_threshold(Duration::from_secs(30)) .test_before_acquire(true) - .connect_with(connection_options) + .before_acquire(|conn, _meta| { + Box::pin(async move { + // Ensure the connection has no leftover open transaction + // (e.g. from a WriteTransaction that was dropped without + // commit/rollback). ROLLBACK is a harmless no-op if no + // transaction is active. + if let Err(e) = sqlx::query("ROLLBACK").execute(&mut *conn).await { + // "cannot rollback - no transaction is active" is the + // common case (connection returned cleanly). Only + // unexpected errors deserve attention. + log::debug!("before_acquire ROLLBACK failed: {e}"); + } + Ok(true) + }) + }) + .connect_with(pool_options) .await .with_context(|| format!("Cannot open database at `{}`", file_name.display()))?; - Self::run_migrations(&pool).await?; - Ok(pool) } - async fn run_migrations(pool: &Pool) -> Result<()> { - sqlx::migrate!("src/app_state/database/migrations") - .run(pool) - .await - .context("Cannot check for pending migrations") + + fn validate_vault_id(vault: &VaultId) -> Result<()> { + if vault.is_empty() { + anyhow::bail!("Vault ID must not be empty"); + } + if vault.contains('/') + || vault.contains('\\') + || vault.contains("..") + || vault.contains('\0') + { + anyhow::bail!( + "Invalid vault ID: must not contain path separators, '..', or null bytes" + ); + } + Ok(()) } async fn get_connection_pool(&self, vault: &VaultId) -> Result> { - // First, check if the pool exists without holding the lock during creation - { + Self::validate_vault_id(vault)?; + + // Get or create the VaultPool entry. The global lock is held only + // long enough for a HashMap lookup/insert — never across + // create_vault_database. + let vault_pool = { let mut pools = self.connection_pools.lock().await; - if let Some(pool_with_timestamp) = pools.get_mut(vault) { - pool_with_timestamp.last_accessed = Instant::now(); - return Ok(pool_with_timestamp.pool.clone()); - } - } + pools + .entry(vault.clone()) + .or_insert_with(|| { + Arc::new(VaultPool { + cell: Arc::new(OnceCell::new()), + last_accessed: Mutex::new(Instant::now()), + }) + }) + .clone() + }; - // Create the pool outside of the lock to avoid blocking other vaults - // Note: This may result in multiple pools being created for the same vault - // under high concurrency, but only one will be kept - let new_pool = Self::create_vault_database(&self.config, vault).await?; - - // Re-acquire lock and insert (or use existing if another task created it) - let mut pools = self.connection_pools.lock().await; - let pool_with_timestamp = pools - .entry(vault.clone()) - .or_insert_with(|| PoolWithTimestamp { - pool: new_pool.clone(), - last_accessed: Instant::now(), - }); - - pool_with_timestamp.last_accessed = Instant::now(); - Ok(pool_with_timestamp.pool.clone()) - } - - /// Attempting to write from this transaction might result in a - /// database locked error. Use this transaction for read-only operations. - pub async fn create_readonly_transaction( - &self, - vault: &VaultId, - ) -> Result> { - self.get_connection_pool(vault) - .await? - .begin() - .await - .context("Cannot create transaction") - } - - pub async fn create_write_transaction(&self, vault: &VaultId) -> Result> { - let mut transaction = self.create_readonly_transaction(vault).await?; - - // sqlx doesn't support immediate transactions for sqlite: https://github.com/launchbadge/sqlx/issues/481 - sqlx::query!("END; BEGIN IMMEDIATE;") - .execute(&mut *transaction) + // OnceCell::get_or_try_init guarantees exactly-once + // initialization: concurrent callers for the same vault wait + // here; callers for other vaults are not blocked. + let config = self.config.clone(); + let vault_clone = vault.clone(); + let pool = vault_pool + .cell + .get_or_try_init(|| async { + Self::create_vault_database(&config, &vault_clone).await + }) .await?; - Ok(transaction) + *vault_pool.last_accessed.lock().await = Instant::now(); + Ok(pool.clone()) + } + + pub async fn create_write_transaction(&self, vault: &VaultId) -> Result { + let pool = self.get_connection_pool(vault).await?; + WriteTransaction::new(&pool).await } /// Return the latest state of all documents in the vault pub async fn get_latest_documents( &self, vault: &VaultId, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { let query = sqlx::query!( r#" @@ -204,8 +325,8 @@ impl Database { "#, ); - if let Some(transaction) = transaction { - query.fetch_all(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_all(&mut *conn).await } else { query .fetch_all(&self.get_connection_pool(vault).await?) @@ -222,9 +343,7 @@ impl Database { is_deleted: row.is_deleted, user_id: row.user_id, device_id: row.device_id, - content_size: row - .content_size - .expect("Content size can't be null but sqlx can't infer it"), + content_size: row.content_size.unwrap_or(0), }) .collect() }) @@ -236,7 +355,7 @@ impl Database { &self, vault: &VaultId, vault_update_id: VaultUpdateId, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { let query = sqlx::query!( r#" @@ -256,8 +375,8 @@ impl Database { vault_update_id ); - if let Some(transaction) = transaction { - query.fetch_all(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_all(&mut *conn).await } else { query .fetch_all(&self.get_connection_pool(vault).await?) @@ -276,9 +395,7 @@ impl Database { is_deleted: row.is_deleted, user_id: row.user_id, device_id: row.device_id, - content_size: row - .content_size - .expect("Content size can't be null but sqlx can't infer it"), + content_size: row.content_size.unwrap_or(0), }) .collect() }) @@ -287,7 +404,7 @@ impl Database { pub async fn get_max_update_id_in_vault( &self, vault: &VaultId, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result { let query = sqlx::query!( r#" @@ -296,8 +413,8 @@ impl Database { "#, ); - if let Some(transaction) = transaction { - query.fetch_one(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_one(&mut *conn).await } else { query .fetch_one(&self.get_connection_pool(vault).await?) @@ -311,7 +428,7 @@ impl Database { &self, vault: &VaultId, relative_path: &str, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { let query = sqlx::query_as!( StoredDocumentVersion, @@ -337,8 +454,8 @@ impl Database { relative_path ); - if let Some(transaction) = transaction { - query.fetch_optional(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_optional(&mut *conn).await } else { query .fetch_optional(&self.get_connection_pool(vault).await?) @@ -351,7 +468,7 @@ impl Database { &self, vault: &VaultId, document_id: &DocumentId, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { let document_id = document_id.as_hyphenated(); let query = sqlx::query_as!( @@ -374,8 +491,8 @@ impl Database { document_id ); - if let Some(transaction) = transaction { - query.fetch_optional(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_optional(&mut *conn).await } else { query .fetch_optional(&self.get_connection_pool(vault).await?) @@ -388,7 +505,7 @@ impl Database { &self, vault: &VaultId, vault_update_id: VaultUpdateId, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { let query = sqlx::query_as!( StoredDocumentVersion, @@ -409,8 +526,8 @@ impl Database { vault_update_id ); - if let Some(transaction) = transaction { - query.fetch_optional(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_optional(&mut *conn).await } else { query .fetch_optional(&self.get_connection_pool(vault).await?) @@ -424,7 +541,7 @@ impl Database { &self, vault_id: &VaultId, version: &StoredDocumentVersion, - transaction: Option>, + transaction: Option, ) -> Result<()> { let document_id = version.document_id.as_hyphenated(); let query = sqlx::query!( @@ -438,9 +555,10 @@ impl Database { is_deleted, user_id, device_id, - idempotency_key + idempotency_key, + has_been_merged ) - values (?, ?, ?, ?, ?, ?, ?, ?, ?) + values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?) "#, version.vault_update_id, document_id, @@ -450,7 +568,8 @@ impl Database { version.is_deleted, version.user_id, version.device_id, - version.idempotency_key + version.idempotency_key, + version.has_been_merged ); if let Some(mut transaction) = transaction { @@ -490,32 +609,36 @@ impl Database { &self, vault: &VaultId, idempotency_key: &str, - transaction: Option<&mut Transaction<'_>>, + connection: Option<&mut SqliteConnection>, ) -> Result> { + // Start from the `documents` table (which has an index on + // `idempotency_key`) to find the document_id, then join to + // `latest_document_versions` for the latest state. let query = sqlx::query_as!( StoredDocumentVersion, r#" select - d.vault_update_id, - d.document_id as "document_id: Hyphenated", - d.relative_path, - d.updated_date as "updated_date: chrono::DateTime", - d.content, - d.is_deleted, - d.user_id, - d.device_id, - d.has_been_merged, - d.idempotency_key - from latest_document_versions d - inner join documents d2 on d.document_id = d2.document_id - where d2.idempotency_key = ? + ldv.vault_update_id, + ldv.document_id as "document_id: Hyphenated", + ldv.relative_path, + ldv.updated_date as "updated_date: chrono::DateTime", + ldv.content, + ldv.is_deleted, + ldv.user_id, + ldv.device_id, + ldv.has_been_merged, + ldv.idempotency_key + from documents d + inner join latest_document_versions ldv on d.document_id = ldv.document_id + where d.idempotency_key = ? + order by ldv.vault_update_id desc limit 1 "#, idempotency_key ); - if let Some(transaction) = transaction { - query.fetch_optional(&mut **transaction).await + if let Some(conn) = connection { + query.fetch_optional(&mut *conn).await } else { query .fetch_optional(&self.get_connection_pool(vault).await?) @@ -524,39 +647,192 @@ impl Database { .context("Cannot fetch document by idempotency key") } + /// Return all versions (without content) of a specific document, ordered by `vault_update_id` + pub async fn get_document_versions( + &self, + vault: &VaultId, + document_id: &DocumentId, + connection: Option<&mut SqliteConnection>, + ) -> Result> { + let document_id = document_id.as_hyphenated(); + let query = sqlx::query!( + r#" + select + vault_update_id, + document_id as "document_id: Hyphenated", + relative_path, + updated_date as "updated_date: chrono::DateTime", + is_deleted, + user_id, + device_id, + length(content) as "content_size: u64" + from documents + where document_id = ? + order by vault_update_id + "#, + document_id, + ); + + if let Some(conn) = connection { + query.fetch_all(&mut *conn).await + } else { + query + .fetch_all(&self.get_connection_pool(vault).await?) + .await + } + .with_context(|| format!("Cannot fetch document versions for document `{document_id}`")) + .map(|rows| { + rows.into_iter() + .map(|row| DocumentVersionWithoutContent { + vault_update_id: row.vault_update_id, + document_id: row.document_id.into(), + relative_path: row.relative_path, + updated_date: row.updated_date, + is_deleted: row.is_deleted, + user_id: row.user_id, + device_id: row.device_id, + content_size: row.content_size.unwrap_or(0), + }) + .collect() + }) + } + + /// Return all versions across all documents, paginated, ordered by `vault_update_id` DESC + pub async fn get_vault_history( + &self, + vault: &VaultId, + limit: i64, + before_update_id: Option, + connection: Option<&mut SqliteConnection>, + ) -> Result> { + let map_row = |row: VaultHistoryRow| DocumentVersionWithoutContent { + vault_update_id: row.vault_update_id, + document_id: row.document_id, + relative_path: row.relative_path, + updated_date: row.updated_date, + is_deleted: row.is_deleted, + user_id: row.user_id, + device_id: row.device_id, + content_size: row.content_size.unwrap_or(0), + }; + + if let Some(before) = before_update_id { + let query = sqlx::query_as!( + VaultHistoryRow, + r#" + select + vault_update_id, + document_id as "document_id: Hyphenated", + relative_path, + updated_date as "updated_date: chrono::DateTime", + is_deleted, + user_id, + device_id, + length(content) as "content_size: u64" + from documents + where vault_update_id < ? + order by vault_update_id desc + limit ? + "#, + before, + limit, + ); + + let rows = if let Some(conn) = connection { + query.fetch_all(&mut *conn).await + } else { + query + .fetch_all(&self.get_connection_pool(vault).await?) + .await + } + .context("Cannot fetch vault history")?; + + Ok(rows.into_iter().map(map_row).collect()) + } else { + let query = sqlx::query_as!( + VaultHistoryRow, + r#" + select + vault_update_id, + document_id as "document_id: Hyphenated", + relative_path, + updated_date as "updated_date: chrono::DateTime", + is_deleted, + user_id, + device_id, + length(content) as "content_size: u64" + from documents + order by vault_update_id desc + limit ? + "#, + limit, + ); + + let rows = if let Some(conn) = connection { + query.fetch_all(&mut *conn).await + } else { + query + .fetch_all(&self.get_connection_pool(vault).await?) + .await + } + .context("Cannot fetch vault history")?; + + Ok(rows.into_iter().map(map_row).collect()) + } + } + /// Cleanup idle connection pools that haven't been accessed in more than 5 minutes async fn cleanup_idle_pools(&self) { - let mut pools = self.connection_pools.lock().await; - let now = Instant::now(); + // Collect idle vaults and remove them from the map while holding + // the lock briefly. Close pools OUTSIDE the lock so that + // pool.close().await doesn't block other get_connection_pool calls. + let idle_pools: Vec<(VaultId, Arc)> = { + let mut pools = self.connection_pools.lock().await; + let now = Instant::now(); - // Collect vaults to remove - let vaults_to_remove: Vec = pools - .iter() - .filter(|(_, pool_with_timestamp)| { - now.duration_since(pool_with_timestamp.last_accessed) > IDLE_POOL_TIMEOUT - }) - .map(|(vault_id, _)| vault_id.clone()) - .collect(); + let vaults_to_remove: Vec = pools + .iter() + .filter(|(_, vp)| { + // If the lock is contested, the pool is actively used — not idle. + let Ok(last) = vp.last_accessed.try_lock() else { + return false; + }; + now.duration_since(*last) > IDLE_POOL_TIMEOUT + }) + .map(|(vault_id, _)| vault_id.clone()) + .collect(); - // Close and remove idle pools - for vault_id in &vaults_to_remove { - if let Some(pool_with_timestamp) = pools.remove(vault_id) { + vaults_to_remove + .into_iter() + .filter_map(|id| pools.remove(&id).map(|vp| (id, vp))) + .collect() + }; + + for (vault_id, vault_pool) in idle_pools { + if let Some(pool) = vault_pool.cell.get() { info!("Closing idle database connection pool for vault `{vault_id}`"); - pool_with_timestamp.pool.close().await; + pool.close().await; } } } /// Start a background task that periodically cleans up idle connection pools - fn start_idle_pool_cleanup(&self) { + fn start_idle_pool_cleanup(&self, mut shutdown: tokio::sync::watch::Receiver<()>) { let database = self.clone(); tokio::spawn(async move { let mut interval = tokio::time::interval(Duration::from_secs(60)); // Check every minute interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Skip); loop { - interval.tick().await; - database.cleanup_idle_pools().await; + tokio::select! { + _ = interval.tick() => { + database.cleanup_idle_pools().await; + } + _ = shutdown.changed() => { + info!("Idle pool cleanup task shutting down"); + break; + } + } } }); } diff --git a/sync-server/src/app_state/database/migrations/20260315000000_add_unique_index_on_idempotency_key.sql b/sync-server/src/app_state/database/migrations/20260315000000_add_unique_index_on_idempotency_key.sql new file mode 100644 index 00000000..2e2f3ed5 --- /dev/null +++ b/sync-server/src/app_state/database/migrations/20260315000000_add_unique_index_on_idempotency_key.sql @@ -0,0 +1,2 @@ +CREATE UNIQUE INDEX IF NOT EXISTS idx_documents_idempotency_key +ON documents (idempotency_key) WHERE idempotency_key IS NOT NULL AND is_deleted = 0; diff --git a/sync-server/src/app_state/database/migrations/20260319000000_add_index_on_document_id.sql b/sync-server/src/app_state/database/migrations/20260319000000_add_index_on_document_id.sql new file mode 100644 index 00000000..f3ee8dd3 --- /dev/null +++ b/sync-server/src/app_state/database/migrations/20260319000000_add_index_on_document_id.sql @@ -0,0 +1,2 @@ +CREATE INDEX IF NOT EXISTS idx_documents_document_id +ON documents (document_id, vault_update_id); diff --git a/sync-server/src/app_state/database/models.rs b/sync-server/src/app_state/database/models.rs index 6e39ca58..c28d64ea 100644 --- a/sync-server/src/app_state/database/models.rs +++ b/sync-server/src/app_state/database/models.rs @@ -25,6 +25,8 @@ pub struct StoredDocumentVersion { pub idempotency_key: Option, } +/// Equality is based solely on `vault_update_id` (the primary key). +/// Two rows with the same PK are the same database record. impl PartialEq for StoredDocumentVersion { fn eq(&self, other: &Self) -> bool { self.vault_update_id == other.vault_update_id @@ -34,7 +36,7 @@ impl PartialEq for StoredDocumentVersion { #[derive(TS, Debug, Clone, Serialize)] #[serde(rename_all = "camelCase")] pub struct DocumentVersionWithoutContent { - #[ts(as = "i32")] + #[ts(type = "number")] pub vault_update_id: VaultUpdateId, pub document_id: DocumentId, @@ -44,7 +46,7 @@ pub struct DocumentVersionWithoutContent { pub user_id: UserId, pub device_id: DeviceId, - #[ts(as = "i32")] + #[ts(type = "number")] pub content_size: u64, } @@ -66,7 +68,7 @@ impl From for DocumentVersionWithoutContent { #[derive(TS, Debug, Clone, Serialize)] #[serde(rename_all = "camelCase")] pub struct DocumentVersion { - #[ts(as = "i32")] + #[ts(type = "number")] pub vault_update_id: VaultUpdateId, pub document_id: DocumentId, diff --git a/sync-server/src/app_state/websocket/broadcasts.rs b/sync-server/src/app_state/websocket/broadcasts.rs index 60ae0219..14482751 100644 --- a/sync-server/src/app_state/websocket/broadcasts.rs +++ b/sync-server/src/app_state/websocket/broadcasts.rs @@ -1,24 +1,21 @@ use std::{collections::HashMap, sync::Arc}; -use anyhow::Context; use log::{debug, warn}; use tokio::sync::{Mutex, broadcast}; use super::models::WebSocketServerMessageWithOrigin; -use crate::{ - app_state::database::models::VaultId, config::server_config::ServerConfig, errors::server_error, -}; +use crate::{app_state::database::models::VaultId, config::server_config::ServerConfig}; #[derive(Debug, Clone)] pub struct Broadcasts { - max_clients_per_vault: usize, + broadcast_channel_capacity: usize, tx: Arc>>>, } impl Broadcasts { pub fn new(server_config: &ServerConfig) -> Self { Self { - max_clients_per_vault: server_config.max_clients_per_vault, + broadcast_channel_capacity: server_config.broadcast_channel_capacity, tx: Arc::new(Mutex::new(HashMap::new())), } } @@ -26,10 +23,25 @@ impl Broadcasts { pub async fn get_receiver( &self, vault: VaultId, - ) -> broadcast::Receiver { - let tx = self.get_or_create(vault).await; + max_clients: usize, + ) -> Result, crate::errors::SyncServerError> + { + let mut tx_map = self.tx.lock().await; - tx.subscribe() + // Prune senders for vaults with no active receivers + tx_map.retain(|_, sender| sender.receiver_count() > 0); + + let sender = tx_map + .entry(vault) + .or_insert_with(|| broadcast::channel(self.broadcast_channel_capacity).0); + + if sender.receiver_count() >= max_clients { + return Err(crate::errors::client_error(anyhow::anyhow!( + "Vault has reached the maximum number of clients ({max_clients})" + ))); + } + + Ok(sender.subscribe()) } /// Notify all clients (who are subscribed to the vault) about an update. @@ -39,31 +51,22 @@ impl Broadcasts { vault: VaultId, document: WebSocketServerMessageWithOrigin, ) { - let tx = self.get_or_create(vault.clone()).await; + let mut tx_map = self.tx.lock().await; - if tx.receiver_count() == 0 { + // Prune senders for vaults with no active receivers + tx_map.retain(|_, sender| sender.receiver_count() > 0); + + let sender = tx_map + .entry(vault.clone()) + .or_insert_with(|| broadcast::channel(self.broadcast_channel_capacity).0); + + if sender.receiver_count() == 0 { debug!("Skipping broadcast, no clients connected for vault `{vault}`"); return; } - let result = tx - .send(document) - .context("Cannot broadcast server message to websocket listeners") - .map_err(server_error); - - if result.is_err() { - warn!("Failed to send message: {result:?}"); + if let Err(e) = sender.send(document) { + warn!("Failed to broadcast to vault `{vault}`: {e}"); } } - - async fn get_or_create( - &self, - vault: VaultId, - ) -> broadcast::Sender { - let mut tx = self.tx.lock().await; - - tx.entry(vault) - .or_insert_with(|| broadcast::channel(self.max_clients_per_vault).0.clone()) - .clone() - } } diff --git a/sync-server/src/app_state/websocket/models.rs b/sync-server/src/app_state/websocket/models.rs index e037fb7e..fb1d24b9 100644 --- a/sync-server/src/app_state/websocket/models.rs +++ b/sync-server/src/app_state/websocket/models.rs @@ -11,7 +11,7 @@ pub struct WebSocketHandshake { pub token: String, pub device_id: DeviceId, - #[ts(as = "Option")] + #[ts(type = "number | null")] pub last_seen_vault_update_id: Option, } @@ -28,7 +28,7 @@ pub struct DocumentWithCursors { // that it exists and can be client-side // interpolated. However, the actual // position is meaningless. - #[ts(as = "Option")] + #[ts(type = "number | null")] pub vault_update_id: Option, pub document_id: DocumentId, @@ -70,6 +70,7 @@ pub struct WebSocketVaultUpdate { pub enum WebSocketClientMessage { Handshake(WebSocketHandshake), CursorPositions(CursorPositionFromClient), + Ping {}, } #[derive(TS, Serialize, Clone, Debug)] diff --git a/sync-server/src/app_state/websocket/utils.rs b/sync-server/src/app_state/websocket/utils.rs index 1e0dd243..ce8205fa 100644 --- a/sync-server/src/app_state/websocket/utils.rs +++ b/sync-server/src/app_state/websocket/utils.rs @@ -9,7 +9,7 @@ use crate::{ database::models::{DocumentVersionWithoutContent, VaultId, VaultUpdateId}, }, config::user_config::User, - errors::{SyncServerError, server_error, unauthenticated_error}, + errors::{SyncServerError, client_error, server_error, unauthenticated_error}, server::auth::auth, }; @@ -26,16 +26,16 @@ pub fn get_authenticated_handshake( if let Some(Message::Text(message)) = message { let message: WebSocketClientMessage = serde_json::from_str(&message) .context("Failed to parse message") - .map_err(server_error)?; + .map_err(client_error)?; match message { WebSocketClientMessage::Handshake(handshake) => { let user = auth(state, handshake.token.trim(), vault_id)?; Ok(AuthenticatedWebSocketHandshake { handshake, user }) } - WebSocketClientMessage::CursorPositions(_) => Err(unauthenticated_error( - anyhow::anyhow!("Expected a handshake message"), - )), + WebSocketClientMessage::CursorPositions(_) | WebSocketClientMessage::Ping {} => Err( + unauthenticated_error(anyhow::anyhow!("Expected a handshake message")), + ), } } else { Err(unauthenticated_error(anyhow::anyhow!( diff --git a/sync-server/src/config.rs b/sync-server/src/config.rs index 6a003d2e..75d4dba7 100644 --- a/sync-server/src/config.rs +++ b/sync-server/src/config.rs @@ -28,23 +28,20 @@ pub struct Config { impl Config { pub async fn read_or_create(path: &Path) -> Result { - let config = if path.exists() { - info!( - "Loading configuration from `{}`", - path.canonicalize().unwrap().display() - ); - Self::load_from_file(path).await? + let display_path = path.canonicalize().unwrap_or_else(|_| path.to_path_buf()); + + if path.exists() { + info!("Loading configuration from `{}`", display_path.display()); + Self::load_from_file(path).await } else { - Self::default() - }; - - config.write(path).await?; - info!( - "Updated configuration at `{}`", - path.canonicalize().unwrap().display() - ); - - Ok(config) + let config = Self::default(); + config.write(path).await?; + info!( + "Created default configuration at `{}`", + display_path.display() + ); + Ok(config) + } } pub async fn load_from_file(path: &Path) -> Result { diff --git a/sync-server/src/config/server_config.rs b/sync-server/src/config/server_config.rs index 4a9da0f4..ecf1ca87 100644 --- a/sync-server/src/config/server_config.rs +++ b/sync-server/src/config/server_config.rs @@ -1,10 +1,13 @@ +use anyhow::{Result, ensure}; use log::debug; use serde::{Deserialize, Serialize}; use std::time::Duration; use crate::consts::{ - DEFAULT_HOST, DEFAULT_MAX_BODY_SIZE_MB, DEFAULT_MAX_CLIENTS_PER_VAULT, - DEFAULT_MERGEABLE_FILE_EXTENSIONS, DEFAULT_PORT, DEFAULT_RESPONSE_TIMEOUT_SECONDS, + DEFAULT_ALLOWED_ORIGINS, DEFAULT_BROADCAST_CHANNEL_CAPACITY, DEFAULT_HOST, + DEFAULT_MAX_BODY_SIZE_MB, DEFAULT_MAX_CLIENTS_PER_VAULT, DEFAULT_MAX_PENDING_WS_CONNECTIONS, + DEFAULT_MERGEABLE_FILE_EXTENSIONS, DEFAULT_PORT, DEFAULT_RATE_LIMIT_PER_SECOND, + DEFAULT_RESPONSE_TIMEOUT_SECONDS, }; #[derive(Debug, Deserialize, Serialize, Clone, Default)] @@ -21,11 +24,68 @@ pub struct ServerConfig { #[serde(default = "default_max_clients_per_vault")] pub max_clients_per_vault: usize, + #[serde(default = "default_broadcast_channel_capacity")] + pub broadcast_channel_capacity: usize, + #[serde(default = "default_response_timeout", with = "humantime_serde")] pub response_timeout: Duration, #[serde(default = "default_mergeable_file_extensions")] pub mergeable_file_extensions: Vec, + + /// Maximum requests per second (0 = disabled). + #[serde(default = "default_rate_limit_per_second")] + pub rate_limit_per_second: u64, + + /// Allowed CORS origins. Default: `["*"]` (allow all). + #[serde(default = "default_allowed_origins")] + pub allowed_origins: Vec, + + /// Maximum concurrent unauthenticated WebSocket connections waiting for + /// handshake. Limits resource consumption from clients that connect but + /// never authenticate. + #[serde(default = "default_max_pending_websocket_connections")] + pub max_pending_websocket_connections: usize, + + /// When set, proxies all UI requests (index, assets, Vite HMR) to this + /// URL instead of serving embedded assets. Typically + /// `http://localhost:5173` for the Vite dev server. + #[serde(default)] + pub dev_proxy_url: Option, +} + +impl ServerConfig { + pub fn validate(&self) -> Result<()> { + ensure!( + !self.response_timeout.is_zero(), + "response_timeout must be greater than 0" + ); + ensure!( + self.max_body_size_mb > 0, + "max_body_size_mb must be greater than 0" + ); + ensure!( + self.max_clients_per_vault > 0, + "max_clients_per_vault must be greater than 0" + ); + ensure!( + self.broadcast_channel_capacity > 0, + "broadcast_channel_capacity must be greater than 0" + ); + ensure!( + self.max_pending_websocket_connections > 0, + "max_pending_websocket_connections must be greater than 0" + ); + ensure!( + self.max_clients_per_vault <= 10_000, + "max_clients_per_vault must be at most 10000" + ); + ensure!( + self.broadcast_channel_capacity <= 1_000_000, + "broadcast_channel_capacity must be at most 1000000" + ); + Ok(()) + } } fn default_host() -> String { @@ -48,6 +108,11 @@ fn default_max_clients_per_vault() -> usize { DEFAULT_MAX_CLIENTS_PER_VAULT } +fn default_broadcast_channel_capacity() -> usize { + debug!("Using default broadcast channel capacity: {DEFAULT_BROADCAST_CHANNEL_CAPACITY}"); + DEFAULT_BROADCAST_CHANNEL_CAPACITY +} + fn default_response_timeout() -> Duration { debug!("Using default response timeout: {DEFAULT_RESPONSE_TIMEOUT_SECONDS:?}"); DEFAULT_RESPONSE_TIMEOUT_SECONDS @@ -60,3 +125,23 @@ fn default_mergeable_file_extensions() -> Vec { .map(|s| (*s).to_owned()) .collect() } + +fn default_rate_limit_per_second() -> u64 { + debug!("Using default rate limit per second: {DEFAULT_RATE_LIMIT_PER_SECOND}"); + DEFAULT_RATE_LIMIT_PER_SECOND +} + +fn default_allowed_origins() -> Vec { + debug!("Using default allowed origins: {DEFAULT_ALLOWED_ORIGINS:?}"); + DEFAULT_ALLOWED_ORIGINS + .iter() + .map(|s| (*s).to_owned()) + .collect() +} + +fn default_max_pending_websocket_connections() -> usize { + debug!( + "Using default max pending WebSocket connections: {DEFAULT_MAX_PENDING_WS_CONNECTIONS}" + ); + DEFAULT_MAX_PENDING_WS_CONNECTIONS +} diff --git a/sync-server/src/config/user_config.rs b/sync-server/src/config/user_config.rs index 8b2537f0..3e160dd0 100644 --- a/sync-server/src/config/user_config.rs +++ b/sync-server/src/config/user_config.rs @@ -19,10 +19,19 @@ where let mut user_token_map = BiHashMap::new(); for user in &users { if let Some(existing_name) = user_token_map.get_by_right(&user.token) { + let redacted = if user.token.len() > 6 { + format!( + "{}...{}", + &user.token[..3], + &user.token[user.token.len() - 3..] + ) + } else { + "***".to_owned() + }; return Err(D::Error::custom(format!( - "Duplicate user token found: `{}` for users `{}` and `{}`. User tokens must be \ - unique.", - user.token, existing_name, user.name + "Duplicate user token found: `{redacted}` for users `{}` and `{}`. User tokens \ + must be unique.", + existing_name, user.name ))); } @@ -41,10 +50,23 @@ where impl UserConfig { pub fn get_user(&self, token: &str) -> Option<&User> { - self.user_configs.iter().find(|u| u.token == token) + self.user_configs + .iter() + .find(|u| constant_time_eq(u.token.as_bytes(), token.as_bytes())) } } +/// Constant-time byte comparison to prevent timing attacks on token lookups. +fn constant_time_eq(a: &[u8], b: &[u8]) -> bool { + if a.len() != b.len() { + return false; + } + a.iter() + .zip(b.iter()) + .fold(0u8, |acc, (x, y)| acc | (x ^ y)) + == 0 +} + #[derive(Debug, Deserialize, Serialize, Clone)] pub struct User { pub name: String, diff --git a/sync-server/src/consts.rs b/sync-server/src/consts.rs index ee0dcfed..66fcc727 100644 --- a/sync-server/src/consts.rs +++ b/sync-server/src/consts.rs @@ -13,12 +13,21 @@ pub const DEFAULT_PORT: u16 = 3000; pub const DEFAULT_MAX_BODY_SIZE_MB: usize = 4096; pub const DEFAULT_RESPONSE_TIMEOUT_SECONDS: Duration = Duration::from_mins(30); pub const DEFAULT_MAX_CLIENTS_PER_VAULT: usize = 256; +pub const DEFAULT_BROADCAST_CHANNEL_CAPACITY: usize = 4096; +pub const DEFAULT_MAX_PENDING_WS_CONNECTIONS: usize = 128; pub const DEFAULT_LOG_DIRECTORY: &str = "logs"; pub const DEFAULT_LOG_ROTATION_INTERVAL: Duration = Duration::from_hours(24); pub const IDLE_POOL_TIMEOUT: Duration = Duration::from_mins(5); +pub const GRACEFUL_SHUTDOWN_TIMEOUT: Duration = Duration::from_secs(10); pub const DEFAULT_LOG_LEVEL: LogLevel = LogLevel::Info; pub const DEFAULT_MERGEABLE_FILE_EXTENSIONS: &[&str] = &["md", "txt"]; +/// 0 means rate limiting is disabled. +pub const DEFAULT_RATE_LIMIT_PER_SECOND: u64 = 0; + +/// Default: allow all origins. +pub const DEFAULT_ALLOWED_ORIGINS: &[&str] = &["*"]; + pub const SUPPORTED_API_VERSION: u32 = 3; diff --git a/sync-server/src/errors.rs b/sync-server/src/errors.rs index c505b8ae..4a029e1d 100644 --- a/sync-server/src/errors.rs +++ b/sync-server/src/errors.rs @@ -5,7 +5,7 @@ use axum::{ http::StatusCode, response::{IntoResponse, Response}, }; -use log::debug; +use log::{debug, error, warn}; use serde::Serialize; use thiserror::Error; use ts_rs::TS; @@ -69,7 +69,19 @@ impl Display for SerializedError { impl IntoResponse for SyncServerError { fn into_response(self) -> Response { - let body = Json(self.serialize()); + let serialized = self.serialize(); + + match &self { + Self::InitError(_) | Self::ServerError(_) => { + error!("{serialized}"); + } + Self::ClientError(_) | Self::NotFound(_) => { + warn!("{serialized}"); + } + Self::Unauthenticated(_) | Self::PermissionDeniedError(_) => {} + } + + let body = Json(serialized); match self { Self::InitError(_) | Self::ServerError(_) => { diff --git a/sync-server/src/main.rs b/sync-server/src/main.rs index 1285ed7b..0a3a46e0 100644 --- a/sync-server/src/main.rs +++ b/sync-server/src/main.rs @@ -41,7 +41,15 @@ async fn main() -> ExitCode { } }; - let mut result = set_up_logging(&args, &config.logging); + let mut result = config + .server + .validate() + .context("Invalid server configuration") + .map_err(init_error); + + if result.is_ok() { + result = set_up_logging(&args, &config.logging); + } if result.is_ok() { result = start_server(config).await; diff --git a/sync-server/src/server.rs b/sync-server/src/server.rs index 2d4a0b6b..cb4e1ded 100644 --- a/sync-server/src/server.rs +++ b/sync-server/src/server.rs @@ -4,28 +4,31 @@ mod delete_document; mod device_id_header; mod fetch_document_version; mod fetch_document_version_content; +mod fetch_document_versions; mod fetch_latest_document_version; mod fetch_latest_documents; +mod fetch_vault_history; mod index; mod ping; +mod rate_limit; mod requests; mod resolve_keys; mod responses; +mod restore_document_version; mod update_document; mod websocket; -use anyhow::{Context as _, Result, anyhow}; +use anyhow::{Context as _, Result}; use auth::auth_middleware; use axum::{ Router, extract::{DefaultBodyLimit, Request}, http::{self, HeaderValue, Method}, middleware, - response::IntoResponse, routing::{IntoMakeService, delete, get, post, put}, }; use device_id_header::DEVICE_ID_HEADER_NAME; -use log::info; +use log::{info, warn}; use tokio::signal; use tower_http::{ LatencyUnit, @@ -42,7 +45,7 @@ use tracing::{Level, info_span}; use crate::{ app_state::AppState, config::{Config, server_config::ServerConfig}, - errors::{client_error, not_found_error}, + consts::GRACEFUL_SHUTDOWN_TIMEOUT, }; pub async fn create_server(config: Config) -> Result<()> { @@ -52,26 +55,42 @@ pub async fn create_server(config: Config) -> Result<()> { let server_config = app_state.config.server.clone(); - let app = Router::new() + let mut app = Router::new() .nest("/", get_authed_routes(app_state.clone())) .route("/", get(index::index)) + .route("/assets/*path", get(index::spa_assets)) .route("/vaults/:vault_id/ping", get(ping::ping)) - .route("/vaults/:vault_id/ws", get(websocket::websocket_handler)) + .route("/vaults/:vault_id/ws", get(websocket::websocket_handler)); + + if app_state.config.server.dev_proxy_url.is_some() { + info!( + "Dev proxy enabled → {}", + app_state.config.server.dev_proxy_url.as_deref().unwrap() + ); + app = app.fallback(index::vite_proxy); + } + + let cors_layer = build_cors_layer(&server_config).context("Invalid CORS configuration")?; + + if server_config.rate_limit_per_second > 0 { + info!( + "Rate limiting enabled: {} requests/second", + server_config.rate_limit_per_second + ); + let limiter = rate_limit::RateLimiter::new(server_config.rate_limit_per_second); + app = app.layer(middleware::from_fn_with_state( + limiter, + rate_limit::rate_limit_middleware, + )); + } + + let app = app .layer(DefaultBodyLimit::disable()) .layer(RequestBodyLimitLayer::new( app_state.config.server.max_body_size_mb * 1024 * 1024, )) .layer(TimeoutLayer::new(server_config.response_timeout)) - .layer( - CorsLayer::new() - .allow_origin("*".parse::().expect("Failed to parse origin")) - .allow_headers([ - http::header::CONTENT_TYPE, - http::header::AUTHORIZATION, - DEVICE_ID_HEADER_NAME.clone(), - ]) - .allow_methods([Method::GET, Method::POST, Method::PUT, Method::DELETE]), - ) + .layer(cors_layer) .layer( TraceLayer::new_for_http() .make_span_with(|request: &Request<_>| { @@ -92,13 +111,40 @@ pub async fn create_server(config: Config) -> Result<()> { .on_failure(DefaultOnFailure::new().level(Level::ERROR)), ) .with_state(app_state) - .fallback(handle_404) - .fallback(handle_405) .into_make_service(); start_server(app, &server_config).await } +fn build_cors_layer(server_config: &ServerConfig) -> Result { + let origins = &server_config.allowed_origins; + + let cors = if origins.len() == 1 && origins[0] == "*" { + info!("CORS: allowing all origins (wildcard)"); + let header: HeaderValue = "*" + .parse() + .context("Failed to parse wildcard CORS origin")?; + CorsLayer::new().allow_origin(header) + } else { + let parsed: Vec = origins + .iter() + .map(|o| { + o.parse::() + .with_context(|| format!("Failed to parse CORS origin: `{o}`")) + }) + .collect::>>()?; + CorsLayer::new().allow_origin(parsed) + }; + + Ok(cors + .allow_headers([ + http::header::CONTENT_TYPE, + http::header::AUTHORIZATION, + DEVICE_ID_HEADER_NAME.clone(), + ]) + .allow_methods([Method::GET, Method::POST, Method::PUT, Method::DELETE])) +} + fn get_authed_routes(app_state: AppState) -> Router { Router::new() .route( @@ -125,6 +171,10 @@ fn get_authed_routes(app_state: AppState) -> Router { "/vaults/:vault_id/documents/:document_id/text", put(update_document::update_text), ) + .route( + "/vaults/:vault_id/documents/:document_id/versions", + get(fetch_document_versions::fetch_document_versions), + ) .route( "/vaults/:vault_id/documents/:document_id/versions/:vault_update_id", get(fetch_document_version::fetch_document_version), @@ -137,6 +187,14 @@ fn get_authed_routes(app_state: AppState) -> Router { "/vaults/:vault_id/documents/:document_id", delete(delete_document::delete_document), ) + .route( + "/vaults/:vault_id/documents/:document_id/restore", + post(restore_document_version::restore_document_version), + ) + .route( + "/vaults/:vault_id/history", + get(fetch_vault_history::fetch_vault_history), + ) .layer(middleware::from_fn_with_state(app_state, auth_middleware)) } @@ -153,26 +211,46 @@ async fn start_server(app: IntoMakeService, config: &ServerConfig) .context("Failed to get local address")? ); - axum::serve(listener, app) - .with_graceful_shutdown(shutdown_signal()) - .tcp_nodelay(true) - .await - .context("Failed to start server") + let (shutdown_tx, mut shutdown_rx) = tokio::sync::watch::channel(false); + + let server = axum::serve(listener, app) + .with_graceful_shutdown(async move { + shutdown_signal().await; + let _ = shutdown_tx.send(true); + }) + .tcp_nodelay(true); + + tokio::select! { + result = server => result.context("Failed to start server"), + () = async { + let _ = shutdown_rx.changed().await; + info!( + "Shutdown signal received, waiting up to {}s for in-flight requests to complete...", + GRACEFUL_SHUTDOWN_TIMEOUT.as_secs() + ); + tokio::time::sleep(GRACEFUL_SHUTDOWN_TIMEOUT).await; + warn!("Graceful shutdown timed out, forcing exit"); + } => Ok(()), + } } async fn shutdown_signal() { let ctrl_c = async { - signal::ctrl_c() - .await - .expect("failed to install Ctrl+C handler"); + if let Err(e) = signal::ctrl_c().await { + log::error!("Failed to install Ctrl+C handler: {e}"); + } }; #[cfg(unix)] let terminate = async { - signal::unix::signal(signal::unix::SignalKind::terminate()) - .expect("failed to install signal handler") - .recv() - .await; + match signal::unix::signal(signal::unix::SignalKind::terminate()) { + Ok(mut signal) => { + signal.recv().await; + } + Err(e) => { + log::error!("Failed to install SIGTERM handler: {e}"); + } + } }; #[cfg(not(unix))] @@ -183,11 +261,3 @@ async fn shutdown_signal() { () = terminate => {}, } } - -async fn handle_404() -> impl IntoResponse { - not_found_error(anyhow!("Page not found")) -} - -async fn handle_405() -> impl IntoResponse { - client_error(anyhow!("Method not allowed")) -} diff --git a/sync-server/src/server/auth.rs b/sync-server/src/server/auth.rs index e56f4acc..3b5474d4 100644 --- a/sync-server/src/server/auth.rs +++ b/sync-server/src/server/auth.rs @@ -9,7 +9,7 @@ use axum_extra::{ TypedHeader, headers::{Authorization, authorization::Bearer}, }; -use log::info; +use log::{debug, info}; use crate::{ app_state::{AppState, database::models::VaultId}, @@ -21,10 +21,12 @@ use crate::{ pub async fn auth_middleware( State(state): State, Path(path_params): Path>, - TypedHeader(auth_header): TypedHeader>, + auth_header: Option>>, mut req: Request, next: Next, ) -> Result { + let auth_header = auth_header + .ok_or_else(|| unauthenticated_error(anyhow::anyhow!("Missing Authorization header")))?; let token = auth_header.token().trim(); let vault_id = normalize_string( path_params @@ -51,8 +53,8 @@ pub fn auth(state: &AppState, token: &str, vault_id: &VaultId) -> Result true, VaultAccess::AllowList(AllowListedVaults { ref allowed }) => allowed.contains(vault_id), } { - info!( - "User `{}` is authenticated and is authorised to access to vault `{vault_id}`", + debug!( + "User `{}` is authenticated and is authorised to access vault `{vault_id}`", user.name ); diff --git a/sync-server/src/server/create_document.rs b/sync-server/src/server/create_document.rs index e112dc36..1961ac82 100644 --- a/sync-server/src/server/create_document.rs +++ b/sync-server/src/server/create_document.rs @@ -1,4 +1,3 @@ -use anyhow::Context; use axum::{ Extension, Json, extract::{Path, State}, @@ -16,9 +15,13 @@ use crate::{ }, config::user_config::User, errors::{SyncServerError, server_error}, - server::{responses::DocumentUpdateResponse, update_document::merge_with_stored_version}, + server::{ + responses::DocumentUpdateResponse, + update_document::{MergeInput, merge_with_stored_version}, + }, utils::{ - find_first_available_path::find_first_available_path, normalize::normalize, + dedup_paths::get_base_path, find_first_available_path::find_first_available_path, + is_binary::is_binary, is_file_type_mergable::is_file_type_mergable, normalize::normalize, sanitize_path::sanitize_path, }, }; @@ -32,7 +35,11 @@ pub struct CreateDocumentPathParams { /// Create a new document in case a document with the same doesn't exist /// already. If a document with the same path exists, a new version is created /// with their content merged. +/// +/// Text content must be UTF-8 encoded. Clients are responsible for +/// transcoding other encodings (e.g. UTF-16) to UTF-8 before sending. #[axum::debug_handler] +#[allow(clippy::too_many_lines)] pub async fn create_document( Path(CreateDocumentPathParams { vault_id }): Path, Extension(user): Extension, @@ -51,62 +58,133 @@ pub async fn create_document( if let Some(ref idempotency_key) = request.idempotency_key { let existing = state .database - .get_document_by_idempotency_key(&vault_id, idempotency_key, Some(&mut transaction)) + .get_document_by_idempotency_key(&vault_id, idempotency_key, Some(&mut *transaction)) .await .map_err(server_error)?; if let Some(existing) = existing { - info!( - "Found existing document with idempotency key `{idempotency_key}`, returning existing document" - ); - transaction - .rollback() - .await - .context("Failed to roll back transaction") - .map_err(server_error)?; - return Ok(Json(DocumentUpdateResponse::FastForwardUpdate( - existing.into(), - ))); + if existing.is_deleted { + // The document was created (storing the key) and later deleted. + // Don't return the deleted version — it would cause the client + // to delete its local file. Instead, fall through to normal + // create so the client's content is preserved as a new document. + // The unique index excludes deleted rows (WHERE is_deleted = 0), + // so keeping the key does NOT cause a constraint violation — + // the new non-deleted version can safely reuse the same key. + info!( + "Idempotency key `{idempotency_key}` matches a deleted document, ignoring and creating fresh" + ); + } else { + // Return the LATEST version of the document, not the version + // that originally stored the key. The document may have been + // modified by other clients since the key was stored, and + // returning a stale version would cause the client to cache + // incorrect content, breaking subsequent diffs. + let latest = state + .database + .get_latest_document(&vault_id, &existing.document_id, Some(&mut *transaction)) + .await + .map_err(server_error)? + .unwrap_or(existing); + info!( + "Found existing document with idempotency key `{idempotency_key}`, returning latest version" + ); + transaction.rollback().await.map_err(server_error)?; + return Ok(Json(DocumentUpdateResponse::FastForwardUpdate( + latest.into(), + ))); + } } } let sanitized_relative_path = sanitize_path(&request.relative_path); + if sanitized_relative_path.is_empty() { + transaction.rollback().await.map_err(server_error)?; + return Err(crate::errors::client_error(anyhow::anyhow!( + "Relative path is empty after sanitization" + ))); + } + + let new_content = request.content.contents.to_vec(); + let latest_version = state .database .get_latest_non_deleted_document_by_path( &vault_id, &sanitized_relative_path, - Some(&mut transaction), + Some(&mut *transaction), ) .await .map_err(server_error)?; if let Some(latest_version) = latest_version { - info!( - "Document already exists at new location: `{sanitized_relative_path}` when trying to create it in vault `{vault_id}`, merging into existing document" - ); + let is_mergeable_text = is_file_type_mergable( + &sanitized_relative_path, + &state.config.server.mergeable_file_extensions, + ) && !is_binary(&latest_version.content) + && !is_binary(&new_content); - return merge_with_stored_version( - &sanitized_relative_path, - &latest_version.content.clone(), - latest_version, - vault_id, - user, - device_id, - state, - &sanitized_relative_path, - request.content.contents.to_vec(), - transaction, - request.idempotency_key, - ) - .await; + if is_mergeable_text || new_content == latest_version.content { + return merge_with_stored_version( + MergeInput { + parent_content: &[], + new_content, + idempotency_key: request.idempotency_key, + }, + latest_version, + vault_id, + user, + device_id, + state, + transaction, + ) + .await; + } + + // For non-mergeable (binary) files with different content, don't + // merge — create a separate document at a deconflicted path so + // neither client's data is silently overwritten. + } + + // For creates at deconflicted paths (e.g., "file (2).bin"), the client's + // ensureClearPath renamed a local file before uploading. Check if the + // base path (e.g., "file.bin") has a document with identical content. + // If so, merge with it instead of creating a duplicate document. + let base_path = get_base_path(&sanitized_relative_path); + if base_path != sanitized_relative_path { + let base_doc = state + .database + .get_latest_non_deleted_document_by_path(&vault_id, &base_path, Some(&mut *transaction)) + .await + .map_err(server_error)?; + if let Some(base_doc) = base_doc + && new_content == base_doc.content + { + info!( + "Create at deconflicted path `{sanitized_relative_path}` has identical content to document at base path `{base_path}`, merging" + ); + return merge_with_stored_version( + MergeInput { + parent_content: &[], + new_content, + idempotency_key: request.idempotency_key, + }, + base_doc, + vault_id, + user, + device_id, + state, + transaction, + ) + .await; + } } let document_id = uuid::Uuid::new_v4(); let last_update_id = state .database - .get_max_update_id_in_vault(&vault_id, Some(&mut transaction)) + .get_max_update_id_in_vault(&vault_id, Some(&mut *transaction)) .await .map_err(server_error)?; @@ -129,7 +207,7 @@ pub async fn create_document( vault_update_id: last_update_id + 1, document_id, relative_path: deduped_path, - content: request.content.contents.to_vec(), + content: new_content, updated_date: chrono::Utc::now(), is_deleted: false, user_id: user.name, diff --git a/sync-server/src/server/delete_document.rs b/sync-server/src/server/delete_document.rs index 3bcd31bb..47beb03b 100644 --- a/sync-server/src/server/delete_document.rs +++ b/sync-server/src/server/delete_document.rs @@ -1,4 +1,4 @@ -use anyhow::Context; +use anyhow::{Context, anyhow}; use axum::{ Extension, Json, extract::{Path, State}, @@ -16,8 +16,8 @@ use crate::{ }, }, config::user_config::User, - errors::{SyncServerError, server_error}, - utils::{normalize::normalize, sanitize_path::sanitize_path}, + errors::{SyncServerError, not_found_error, server_error}, + utils::normalize::normalize, }; #[derive(Deserialize)] @@ -37,7 +37,7 @@ pub async fn delete_document( Extension(user): Extension, TypedHeader(device_id): TypedHeader, State(state): State, - Json(request): Json, + Json(_request): Json, ) -> Result, SyncServerError> { debug!("Deleting document `{document_id}` in vault `{vault_id}`"); @@ -59,6 +59,18 @@ pub async fn delete_document( .await .map_err(server_error)?; + if latest_version.is_none() { + transaction + .rollback() + .await + .context("Failed to roll back transaction") + .map_err(server_error)?; + + return Err(not_found_error(anyhow!( + "Document `{document_id}` not found in vault `{vault_id}`" + ))); + } + if let Some(latest_version) = &latest_version && latest_version.is_deleted { @@ -72,13 +84,14 @@ pub async fn delete_document( return Ok(Json(latest_version.clone().into())); } - let latest_content = latest_version.map_or_else(Vec::new, |version| version.content); // in case the document has never existed before deleting it + // latest_version is guaranteed to be Some and not deleted at this point + let latest_version = latest_version.expect("checked above: not None and not deleted"); let new_version = StoredDocumentVersion { vault_update_id: last_update_id + 1, document_id, - relative_path: sanitize_path(&request.relative_path), - content: latest_content, // copy the content from the latest version + relative_path: latest_version.relative_path, + content: latest_version.content, updated_date: chrono::Utc::now(), is_deleted: true, user_id: user.name, diff --git a/sync-server/src/server/device_id_header.rs b/sync-server/src/server/device_id_header.rs index af9d6413..13bd17a8 100644 --- a/sync-server/src/server/device_id_header.rs +++ b/sync-server/src/server/device_id_header.rs @@ -16,20 +16,31 @@ impl Header for DeviceIdHeader { { let value = values.next().ok_or_else(headers::Error::invalid)?; - Ok(DeviceIdHeader( - value - .to_str() - .map_err(|_| headers::Error::invalid())? - .to_owned(), - )) + let s = value.to_str().map_err(|_| headers::Error::invalid())?; + + if s.is_empty() || s.len() > 256 { + return Err(headers::Error::invalid()); + } + + // Only allow safe characters to prevent log injection and similar attacks. + // Covers UUIDs, user-agent strings like "vault-link/1.0 (12345; linux)", + // and human-readable device names. + if !s + .chars() + .all(|c| c.is_ascii_alphanumeric() || "-_./ ();:@+,".contains(c)) + { + return Err(headers::Error::invalid()); + } + + Ok(DeviceIdHeader(s.to_owned())) } fn encode(&self, values: &mut E) where E: Extend, { - let value = HeaderValue::from_static(Box::leak(self.0.clone().into_boxed_str())); - - values.extend(std::iter::once(value)); + if let Ok(value) = HeaderValue::from_str(&self.0) { + values.extend(std::iter::once(value)); + } } } diff --git a/sync-server/src/server/fetch_document_version.rs b/sync-server/src/server/fetch_document_version.rs index c30f1d76..159cad3a 100644 --- a/sync-server/src/server/fetch_document_version.rs +++ b/sync-server/src/server/fetch_document_version.rs @@ -11,7 +11,7 @@ use crate::{ AppState, database::models::{DocumentId, DocumentVersion, VaultId, VaultUpdateId}, }, - errors::{SyncServerError, not_found_error, server_error}, + errors::{SyncServerError, client_error, not_found_error, server_error}, utils::normalize::normalize, }; @@ -52,7 +52,7 @@ pub async fn fetch_document_version( )?; if result.document_id != document_id { - return Err(not_found_error(anyhow!( + return Err(client_error(anyhow!( "Document with document id `{document_id}` does not have a version with id \ `{vault_update_id}`", ))); diff --git a/sync-server/src/server/fetch_document_version_content.rs b/sync-server/src/server/fetch_document_version_content.rs index 9fdd0ad8..a163b036 100644 --- a/sync-server/src/server/fetch_document_version_content.rs +++ b/sync-server/src/server/fetch_document_version_content.rs @@ -11,7 +11,7 @@ use crate::{ AppState, database::models::{DocumentId, VaultId, VaultUpdateId}, }, - errors::{SyncServerError, not_found_error, server_error}, + errors::{SyncServerError, client_error, not_found_error, server_error}, utils::normalize::normalize, }; @@ -52,7 +52,7 @@ pub async fn fetch_document_version_content( )?; if result.document_id != document_id { - return Err(not_found_error(anyhow!( + return Err(client_error(anyhow!( "Document with document id `{document_id}` does not have a version with id \ `{vault_update_id}`", ))); diff --git a/sync-server/src/server/fetch_document_versions.rs b/sync-server/src/server/fetch_document_versions.rs new file mode 100644 index 00000000..46d0e073 --- /dev/null +++ b/sync-server/src/server/fetch_document_versions.rs @@ -0,0 +1,42 @@ +use axum::{ + Json, + extract::{Path, State}, +}; +use log::debug; +use serde::Deserialize; + +use crate::{ + app_state::{ + AppState, + database::models::{DocumentId, DocumentVersionWithoutContent, VaultId}, + }, + errors::{SyncServerError, server_error}, + utils::normalize::normalize, +}; + +#[derive(Deserialize)] +pub struct FetchDocumentVersionsPathParams { + #[serde(deserialize_with = "normalize")] + vault_id: VaultId, + + document_id: DocumentId, +} + +#[axum::debug_handler] +pub async fn fetch_document_versions( + Path(FetchDocumentVersionsPathParams { + vault_id, + document_id, + }): Path, + State(state): State, +) -> Result>, SyncServerError> { + debug!("Fetching all versions for document `{document_id}` in vault `{vault_id}`"); + + let versions = state + .database + .get_document_versions(&vault_id, &document_id, None) + .await + .map_err(server_error)?; + + Ok(Json(versions)) +} diff --git a/sync-server/src/server/fetch_vault_history.rs b/sync-server/src/server/fetch_vault_history.rs new file mode 100644 index 00000000..42cceaa6 --- /dev/null +++ b/sync-server/src/server/fetch_vault_history.rs @@ -0,0 +1,70 @@ +use axum::{ + Json, + extract::{Path, Query, State}, +}; +use log::debug; +use serde::Deserialize; + +use super::responses::VaultHistoryResponse; +use crate::{ + app_state::{ + AppState, + database::models::{VaultId, VaultUpdateId}, + }, + errors::{SyncServerError, client_error, server_error}, + utils::normalize::normalize, +}; + +const DEFAULT_LIMIT: i64 = 50; +const MAX_LIMIT: i64 = 500; + +#[derive(Deserialize)] +pub struct FetchVaultHistoryPathParams { + #[serde(deserialize_with = "normalize")] + vault_id: VaultId, +} + +#[derive(Deserialize)] +pub struct QueryParams { + limit: Option, + before_update_id: Option, +} + +#[axum::debug_handler] +pub async fn fetch_vault_history( + Path(FetchVaultHistoryPathParams { vault_id }): Path, + Query(QueryParams { + limit, + before_update_id, + }): Query, + State(state): State, +) -> Result, SyncServerError> { + if let Some(id) = before_update_id + && id <= 0 + { + return Err(client_error(anyhow::anyhow!( + "before_update_id must be a positive integer" + ))); + } + + let limit = limit.unwrap_or(DEFAULT_LIMIT).clamp(1, MAX_LIMIT); + + debug!( + "Fetching vault history for vault `{vault_id}` (limit={limit}, before={before_update_id:?})" + ); + + // Fetch one extra row to determine if there are more results + let mut versions = state + .database + .get_vault_history(&vault_id, limit + 1, before_update_id, None) + .await + .map_err(server_error)?; + + #[allow(clippy::cast_sign_loss)] // limit is clamped to [1, 500] above + let has_more = versions.len() > limit as usize; + if has_more { + versions.pop(); + } + + Ok(Json(VaultHistoryResponse { versions, has_more })) +} diff --git a/sync-server/src/server/index.rs b/sync-server/src/server/index.rs index 64b053f7..bf52e380 100644 --- a/sync-server/src/server/index.rs +++ b/sync-server/src/server/index.rs @@ -1,7 +1,146 @@ -use axum::response::{Html, IntoResponse}; +use axum::{ + body::Body, + extract::{Path, State}, + http::{StatusCode, header}, + response::{Html, IntoResponse, Response}, +}; +use log::warn; +use rust_embed::Embed; -pub async fn index() -> impl IntoResponse { - const HTML_CONTENT: &str = include_str!("./assets/index.html"); - let html_content = HTML_CONTENT; - Html(html_content) +use crate::app_state::AppState; + +#[derive(Embed)] +#[folder = "../frontend/history-ui/dist/"] +struct HistoryUiAssets; + +pub async fn index(State(state): State) -> impl IntoResponse { + if let Some(proxy_url) = &state.config.server.dev_proxy_url { + let response = proxy_request(proxy_url, "/").await; + if response.status().is_success() { + return response; + } + } + + if let Some(content) = HistoryUiAssets::get("index.html") { + Html( + std::str::from_utf8(content.data.as_ref()) + .inspect_err(|e| warn!("Embedded index.html is not valid UTF-8: {e}")) + .unwrap_or("

VaultLink

") + .to_owned(), + ) + .into_response() + } else { + warn!("No embedded index.html found — history UI may not have been built"); + Html("

VaultLink server

".to_owned()).into_response() + } +} + +pub async fn spa_assets( + State(state): State, + Path(path): Path, +) -> impl IntoResponse { + if let Some(proxy_url) = &state.config.server.dev_proxy_url { + let response = proxy_request(proxy_url, &format!("/assets/{path}")).await; + if response.status().is_success() { + return response; + } + } + + // The route is /assets/*path so path is relative to assets/. + // The embedded files include the assets/ prefix from the dist directory. + let full_path = format!("assets/{path}"); + if let Some(content) = HistoryUiAssets::get(&full_path) { + let mime = mime_guess::from_path(&full_path).first_or_octet_stream(); + return Response::builder() + .status(StatusCode::OK) + .header(header::CONTENT_TYPE, mime.as_ref()) + .body(Body::from(content.data.to_vec())) + .unwrap_or_else(|_| { + Response::builder() + .status(StatusCode::INTERNAL_SERVER_ERROR) + .body(Body::empty()) + .unwrap_or_else(|_| Response::new(Body::empty())) + }); + } + + // Asset paths must match an embedded file — no SPA fallback. + // Serving index.html here would return 200 with text/html for missing + // .css/.js files, causing the browser to silently ignore the content. + Response::builder() + .status(StatusCode::NOT_FOUND) + .body(Body::from("Not found")) + .unwrap_or_else(|_| Response::new(Body::from("Not found"))) +} + +/// Proxies unmatched paths to the Vite dev server for HMR support +/// (`@vite/client`, `src/`, etc.). +pub async fn vite_proxy( + State(state): State, + request: axum::extract::Request, +) -> impl IntoResponse { + let proxy_url = state.config.server.dev_proxy_url.as_deref().unwrap_or(""); + let response = proxy_request(proxy_url, request.uri().path()).await; + if !response.status().is_success() { + return Response::builder() + .status(StatusCode::NOT_FOUND) + .body(Body::from("Not found")) + .unwrap_or_else(|_| Response::new(Body::from("Not found"))); + } + response +} + +/// SPA fallback for production: serves index.html for client-side routes +/// (e.g. `/documents/123`). Only used when the dev proxy is disabled. +pub async fn spa_fallback() -> impl IntoResponse { + match HistoryUiAssets::get("index.html") { + Some(content) => Response::builder() + .status(StatusCode::OK) + .header(header::CONTENT_TYPE, "text/html") + .body(Body::from(content.data.to_vec())) + .unwrap_or_else(|_| { + Response::builder() + .status(StatusCode::INTERNAL_SERVER_ERROR) + .body(Body::empty()) + .unwrap_or_else(|_| Response::new(Body::empty())) + }), + None => Response::builder() + .status(StatusCode::NOT_FOUND) + .body(Body::from("Not found")) + .unwrap_or_else(|_| Response::new(Body::from("Not found"))), + } +} + +static DEV_PROXY_CLIENT: std::sync::LazyLock = std::sync::LazyLock::new(|| { + reqwest::Client::builder() + .timeout(std::time::Duration::from_secs(5)) + .build() + .unwrap_or_default() +}); + +async fn proxy_request(proxy_url: &str, path: &str) -> Response { + let url = format!("{proxy_url}{path}"); + match DEV_PROXY_CLIENT.get(&url).send().await { + Ok(resp) => { + let status = + StatusCode::from_u16(resp.status().as_u16()).unwrap_or(StatusCode::BAD_GATEWAY); + let mut builder = Response::builder().status(status); + for (name, value) in resp.headers() { + builder = builder.header(name.clone(), value.clone()); + } + let bytes = resp.bytes().await.unwrap_or_default(); + builder.body(Body::from(bytes)).unwrap_or_else(|_| { + Response::builder() + .status(StatusCode::BAD_GATEWAY) + .body(Body::empty()) + .unwrap_or_else(|_| Response::new(Body::empty())) + }) + } + Err(_) => { + // Dev server not running — fall back to embedded assets + Response::builder() + .status(StatusCode::BAD_GATEWAY) + .body(Body::empty()) + .unwrap_or_else(|_| Response::new(Body::empty())) + } + } } diff --git a/sync-server/src/server/rate_limit.rs b/sync-server/src/server/rate_limit.rs new file mode 100644 index 00000000..8047adc2 --- /dev/null +++ b/sync-server/src/server/rate_limit.rs @@ -0,0 +1,72 @@ +use std::sync::{ + Arc, + atomic::{AtomicU64, Ordering}, +}; + +use axum::{extract::Request, http::StatusCode, middleware::Next, response::Response}; + +/// Simple token-bucket rate limiter that refills every second. +#[derive(Clone, Debug)] +pub struct RateLimiter { + inner: Arc, +} + +#[derive(Debug)] +struct TokenBucket { + tokens: AtomicU64, + max_tokens: u64, +} + +impl RateLimiter { + /// Create a new rate limiter. Spawns a background task that refills tokens + /// every second. + /// + /// # Panics + /// + /// Panics if `max_per_second` is 0. + pub fn new(max_per_second: u64) -> Self { + assert!( + max_per_second > 0, + "max_per_second must be > 0 (use 0 in config to disable rate limiting entirely)" + ); + + let bucket = Arc::new(TokenBucket { + tokens: AtomicU64::new(max_per_second), + max_tokens: max_per_second, + }); + + let bucket_clone = bucket.clone(); + tokio::spawn(async move { + let mut interval = tokio::time::interval(std::time::Duration::from_secs(1)); + loop { + interval.tick().await; + bucket_clone + .tokens + .store(bucket_clone.max_tokens, Ordering::Release); + } + }); + + Self { inner: bucket } + } + + fn try_acquire(&self) -> bool { + self.inner + .tokens + .fetch_update(Ordering::AcqRel, Ordering::Acquire, |current| { + if current > 0 { Some(current - 1) } else { None } + }) + .is_ok() + } +} + +pub async fn rate_limit_middleware( + axum::extract::State(limiter): axum::extract::State, + req: Request, + next: Next, +) -> Result { + if limiter.try_acquire() { + Ok(next.run(req).await) + } else { + Err(StatusCode::TOO_MANY_REQUESTS) + } +} diff --git a/sync-server/src/server/requests.rs b/sync-server/src/server/requests.rs index 4c486284..2e612234 100644 --- a/sync-server/src/server/requests.rs +++ b/sync-server/src/server/requests.rs @@ -31,7 +31,7 @@ pub struct UpdateBinaryDocumentVersion { #[serde(rename_all = "camelCase")] #[ts(export)] pub struct UpdateTextDocumentVersion { - #[ts(as = "i32")] + #[ts(type = "number")] pub parent_version_id: VaultUpdateId, pub relative_path: String, @@ -40,9 +40,5 @@ pub struct UpdateTextDocumentVersion { pub content: Vec, } -#[derive(TS, Debug, Deserialize)] -#[serde(rename_all = "camelCase")] -#[ts(export)] -pub struct DeleteDocumentVersion { - pub relative_path: String, -} +#[derive(Debug, Deserialize)] +pub struct DeleteDocumentVersion {} diff --git a/sync-server/src/server/resolve_keys.rs b/sync-server/src/server/resolve_keys.rs index a0be6bce..01cbb416 100644 --- a/sync-server/src/server/resolve_keys.rs +++ b/sync-server/src/server/resolve_keys.rs @@ -43,6 +43,10 @@ pub async fn resolve_keys( request.idempotency_keys.len() ); + // Each key lookup is an independent read — no write transaction needed. + // Using create_write_transaction (BEGIN IMMEDIATE) here would hold the + // SQLite write lock for the entire iteration, blocking all concurrent + // creates/updates/deletes and causing server-wide deadlocks under load. let mut resolved = HashMap::new(); for key in &request.idempotency_keys { @@ -53,11 +57,22 @@ pub async fn resolve_keys( .map_err(server_error)?; if let Some(doc) = document { - resolved.insert(key.clone(), doc.document_id.to_string()); + // Skip deleted documents — returning their documentId would cause + // the client to assign a stale ID to its pending doc, and the + // subsequent create retry would get a different documentId from the + // server (since create_document falls through for deleted matches), + // leaving the document permanently stuck. + if !doc.is_deleted { + resolved.insert(key.clone(), doc.document_id.to_string()); + } } } - debug!("Resolved {}/{} idempotency keys", resolved.len(), request.idempotency_keys.len()); + debug!( + "Resolved {}/{} idempotency keys", + resolved.len(), + request.idempotency_keys.len() + ); Ok(Json(ResolveKeysResponse { resolved })) } diff --git a/sync-server/src/server/responses.rs b/sync-server/src/server/responses.rs index a8b3fcd7..c8d5bf84 100644 --- a/sync-server/src/server/responses.rs +++ b/sync-server/src/server/responses.rs @@ -36,6 +36,15 @@ pub struct FetchLatestDocumentsResponse { pub last_update_id: VaultUpdateId, } +/// Response to a vault history request (paginated). +#[derive(TS, Debug, Clone, Serialize)] +#[serde(rename_all = "camelCase")] +#[ts(export)] +pub struct VaultHistoryResponse { + pub versions: Vec, + pub has_more: bool, +} + /// Response to an update document request. #[derive(TS, Debug, Clone, Serialize)] #[serde(tag = "type")] diff --git a/sync-server/src/server/restore_document_version.rs b/sync-server/src/server/restore_document_version.rs new file mode 100644 index 00000000..1c6f07ae --- /dev/null +++ b/sync-server/src/server/restore_document_version.rs @@ -0,0 +1,148 @@ +use anyhow::anyhow; +use axum::{ + Extension, Json, + extract::{Path, State}, +}; +use axum_extra::TypedHeader; +use log::{debug, info}; +use serde::Deserialize; + +use super::device_id_header::DeviceIdHeader; +use crate::{ + app_state::{ + AppState, + database::models::{ + DocumentId, DocumentVersionWithoutContent, StoredDocumentVersion, VaultId, + VaultUpdateId, + }, + }, + config::user_config::User, + errors::{SyncServerError, client_error, not_found_error, server_error}, + utils::{find_first_available_path::find_first_available_path, normalize::normalize}, +}; + +#[derive(Deserialize)] +pub struct RestorePathParams { + #[serde(deserialize_with = "normalize")] + vault_id: VaultId, + + document_id: DocumentId, +} + +#[derive(Deserialize)] +#[serde(rename_all = "camelCase")] +pub struct RestoreDocumentVersionRequest { + pub vault_update_id: VaultUpdateId, +} + +#[axum::debug_handler] +pub async fn restore_document_version( + Path(RestorePathParams { + vault_id, + document_id, + }): Path, + Extension(user): Extension, + TypedHeader(device_id): TypedHeader, + State(state): State, + Json(request): Json, +) -> Result, SyncServerError> { + debug!( + "Restoring document `{document_id}` in vault `{vault_id}` to version `{}`", + request.vault_update_id + ); + + if request.vault_update_id <= 0 { + return Err(client_error(anyhow!( + "Invalid vault_update_id: `{}`", + request.vault_update_id + ))); + } + + let mut transaction = state + .database + .create_write_transaction(&vault_id) + .await + .map_err(server_error)?; + + let target_version = state + .database + .get_document_version(&vault_id, request.vault_update_id, Some(&mut *transaction)) + .await + .map_err(server_error)? + .ok_or_else(|| { + not_found_error(anyhow!("Version `{}` not found", request.vault_update_id)) + })?; + + if target_version.document_id != document_id { + transaction.rollback().await.map_err(server_error)?; + return Err(not_found_error(anyhow!( + "Version `{}` does not belong to document `{document_id}`", + request.vault_update_id, + ))); + } + + if target_version.is_deleted { + transaction.rollback().await.map_err(server_error)?; + return Err(client_error(anyhow!( + "Cannot restore to a deleted version `{}`", + request.vault_update_id, + ))); + } + + let existing = state + .database + .get_latest_non_deleted_document_by_path( + &vault_id, + &target_version.relative_path, + Some(&mut *transaction), + ) + .await + .map_err(server_error)?; + + let restore_path = if let Some(existing_doc) = &existing + && existing_doc.document_id != document_id + { + find_first_available_path( + &vault_id, + &target_version.relative_path, + &state.database, + &mut transaction, + ) + .await + .map_err(server_error)? + } else { + target_version.relative_path.clone() + }; + + let last_update_id = state + .database + .get_max_update_id_in_vault(&vault_id, Some(&mut *transaction)) + .await + .map_err(server_error)?; + + let new_version = StoredDocumentVersion { + vault_update_id: last_update_id + 1, + document_id, + relative_path: restore_path, + content: target_version.content, + updated_date: chrono::Utc::now(), + is_deleted: false, + user_id: user.name.clone(), + device_id: device_id.0.clone(), + has_been_merged: false, + idempotency_key: None, + }; + + state + .database + .insert_document_version(&vault_id, &new_version, Some(transaction)) + .await + .map_err(server_error)?; + + info!( + "Restored document `{document_id}` to version `{}` as new version `{}`", + request.vault_update_id, new_version.vault_update_id + ); + + Ok(Json(new_version.into())) +} diff --git a/sync-server/src/server/update_document.rs b/sync-server/src/server/update_document.rs index d97e394e..3dc7640e 100644 --- a/sync-server/src/server/update_document.rs +++ b/sync-server/src/server/update_document.rs @@ -17,7 +17,7 @@ use crate::{ app_state::{ AppState, database::{ - Transaction, + WriteTransaction, models::{DocumentId, StoredDocumentVersion, VaultId, VaultUpdateId}, }, }, @@ -49,7 +49,8 @@ pub async fn update_binary( State(state): State, TypedMultipart(request): TypedMultipart, ) -> Result, SyncServerError> { - let parent_document = get_parent_document(&state, &vault_id, request.parent_version_id).await?; + let parent_document = + get_parent_document(&state, &vault_id, &document_id, request.parent_version_id).await?; let content = request.content.contents.to_vec(); update_document( @@ -77,19 +78,16 @@ pub async fn update_text( State(state): State, Json(request): Json, ) -> Result, SyncServerError> { - let parent_document = get_parent_document(&state, &vault_id, request.parent_version_id).await?; + let parent_document = + get_parent_document(&state, &vault_id, &document_id, request.parent_version_id).await?; - let parent_content = str::from_utf8(&parent_document.content) - .context("Parent document content is not valid UTF-8") + let parent_text = str::from_utf8(&parent_document.content) + .context("Parent version contains binary content; use putBinary instead of putText") .map_err(client_error)?; - let edited_text = EditedText::from_diff( - parent_content, - request.content, - &*BuiltinTokenizer::Word, - ) - .context("Failed to apply given diff to parent document") - .map_err(client_error)?; + let edited_text = EditedText::from_diff(parent_text, request.content, &*BuiltinTokenizer::Word) + .context("Failed to apply given diff to parent document") + .map_err(client_error)?; let content = edited_text.apply().text().into_bytes(); @@ -109,9 +107,10 @@ pub async fn update_text( async fn get_parent_document( state: &AppState, vault_id: &VaultId, + document_id: &DocumentId, parent_version_id: VaultUpdateId, ) -> Result { - state + let parent = state .database .get_document_version(vault_id, parent_version_id, None) .await @@ -123,7 +122,15 @@ async fn get_parent_document( ))) }, Ok, - ) + )?; + + if &parent.document_id != document_id { + return Err(client_error(anyhow!( + "Parent version `{parent_version_id}` does not belong to document `{document_id}`" + ))); + } + + Ok(parent) } #[allow(clippy::too_many_lines, clippy::too_many_arguments)] @@ -141,12 +148,24 @@ async fn update_document( let sanitized_relative_path = sanitize_path(relative_path); + if sanitized_relative_path.is_empty() { + return Err(client_error(anyhow!( + "Relative path is empty after sanitization" + ))); + } + let mut transaction = state .database .create_write_transaction(&vault_id) .await .map_err(server_error)?; + let last_update_id = state + .database + .get_max_update_id_in_vault(&vault_id, Some(&mut transaction)) + .await + .map_err(server_error)?; + let latest_version = state .database .get_latest_document(&vault_id, &document_id, Some(&mut transaction)) @@ -174,43 +193,12 @@ async fn update_document( ))); } - merge_with_stored_version( - &parent_document.relative_path, - &parent_document.content, - latest_version, - vault_id, - user, - device_id, - state, - &sanitized_relative_path, - content, - transaction, - None, - ) - .await -} - -#[allow(clippy::too_many_arguments)] -pub async fn merge_with_stored_version( - parent_document_path: &str, - parent_document_content: &[u8], - latest_version: StoredDocumentVersion, - vault_id: VaultId, - user: User, - device_id: DeviceIdHeader, - state: AppState, - sanitized_relative_path: &str, - content: Vec, - mut transaction: Transaction<'_>, - idempotency_key: Option, -) -> Result, SyncServerError> { // Return the latest version if the content and path are the same as the latest // version if content == latest_version.content && sanitized_relative_path == latest_version.relative_path { info!( - "Document content is the same as the latest version for `{}`, skipping update", - latest_version.document_id + "Document content is the same as the latest version for `{document_id}`, skipping update" ); transaction .rollback() @@ -224,47 +212,50 @@ pub async fn merge_with_stored_version( } let are_all_participants_mergable = is_file_type_mergable( - sanitized_relative_path, + &sanitized_relative_path, &state.config.server.mergeable_file_extensions, - ) && !is_binary(parent_document_content) + ) && !is_binary(&parent_document.content) && !is_binary(&latest_version.content) && !is_binary(&content); - let merged_content = if are_all_participants_mergable { - info!( - "Merging changes for document `{}` in vault `{vault_id}`", - latest_version.document_id - ); - let parent_str = str::from_utf8(parent_document_content) + let (merged_content, is_different_from_request_content) = if are_all_participants_mergable { + info!("Merging changes for document `{document_id}` in vault `{vault_id}`"); + let parent_text = str::from_utf8(&parent_document.content) .context("Parent document content is not valid UTF-8") - .map_err(server_error)?; - let latest_str = str::from_utf8(&latest_version.content) + .map_err(client_error)?; + let latest_text = str::from_utf8(&latest_version.content) .context("Latest version content is not valid UTF-8") - .map_err(server_error)?; - let content_str = str::from_utf8(&content) + .map_err(client_error)?; + let new_text = str::from_utf8(&content) .context("New content is not valid UTF-8") - .map_err(server_error)?; - - reconcile( - parent_str, - &latest_str.into(), - &content_str.into(), + .map_err(client_error)?; + let merged = reconcile( + parent_text, + &latest_text.into(), + &new_text.into(), &*BuiltinTokenizer::Word, ) .apply() .text() - .into_bytes() + .into_bytes(); + let is_different = merged != content; + (merged, is_different) } else { - content.clone() + (content, false) }; - // We can only update the relative path if we're the first one to do so - let new_relative_path = if parent_document_path == latest_version.relative_path - && latest_version.relative_path != sanitized_relative_path + // Rename resolution: only apply the client's rename if the document's path + // hasn't changed since this client's parent version. Check the parent + // version's path against the latest version's path. If they differ, another + // client already renamed the document — keep the latest path (first rename + // wins). Content changes from both clients are still merged correctly via + // the 3-way reconcile above, independent of which rename wins. + let new_relative_path = if parent_document.relative_path == latest_version.relative_path + && sanitized_relative_path != latest_version.relative_path { let new_path = find_first_available_path( &vault_id, - sanitized_relative_path, + &sanitized_relative_path, &state.database, &mut transaction, ) @@ -282,16 +273,8 @@ pub async fn merge_with_stored_version( latest_version.relative_path.clone() }; - let last_update_id = state - .database - .get_max_update_id_in_vault(&vault_id, Some(&mut transaction)) - .await - .map_err(server_error)?; - - let is_different_from_request_content = merged_content != content; - let new_version = StoredDocumentVersion { - document_id: latest_version.document_id, + document_id, vault_update_id: last_update_id + 1, relative_path: new_relative_path, content: merged_content, @@ -300,7 +283,114 @@ pub async fn merge_with_stored_version( user_id: user.name, device_id: device_id.0, has_been_merged: are_all_participants_mergable && is_different_from_request_content, - idempotency_key, + idempotency_key: None, + }; + + state + .database + .insert_document_version(&vault_id, &new_version, Some(transaction)) + .await + .map_err(server_error)?; + + Ok(Json(if is_different_from_request_content { + DocumentUpdateResponse::MergingUpdate(new_version.into()) + } else { + DocumentUpdateResponse::FastForwardUpdate(new_version.into()) + })) +} + +pub struct MergeInput<'a> { + pub parent_content: &'a [u8], + pub new_content: Vec, + pub idempotency_key: Option, +} + +#[allow(clippy::too_many_arguments)] +pub async fn merge_with_stored_version( + input: MergeInput<'_>, + latest_version: StoredDocumentVersion, + vault_id: VaultId, + user: User, + device_id: DeviceIdHeader, + state: AppState, + mut transaction: WriteTransaction, +) -> Result, SyncServerError> { + let document_id = latest_version.document_id; + + let last_update_id = state + .database + .get_max_update_id_in_vault(&vault_id, Some(&mut transaction)) + .await + .map_err(server_error)?; + + let are_all_participants_mergable = is_file_type_mergable( + &latest_version.relative_path, + &state.config.server.mergeable_file_extensions, + ) && !is_binary(input.parent_content) + && !is_binary(&latest_version.content) + && !is_binary(&input.new_content); + + let merged_content = if are_all_participants_mergable { + info!("Merging changes for document `{document_id}` in vault `{vault_id}`"); + let parent_text = str::from_utf8(input.parent_content) + .context("Parent content is not valid UTF-8") + .map_err(client_error)?; + let latest_text = str::from_utf8(&latest_version.content) + .context("Latest version content is not valid UTF-8") + .map_err(client_error)?; + let new_text = str::from_utf8(&input.new_content) + .context("New content is not valid UTF-8") + .map_err(client_error)?; + reconcile( + parent_text, + &latest_text.into(), + &new_text.into(), + &*BuiltinTokenizer::Word, + ) + .apply() + .text() + .into_bytes() + } else { + input.new_content.clone() + }; + + let is_different_from_request_content = merged_content != input.new_content; + + // When merging during create, keep the latest version's path (the existing + // document's path) rather than the requested path. + let new_relative_path = latest_version.relative_path.clone(); + + // Short-circuit: if content is identical AND no idempotency key to persist, + // return the existing version without inserting a new row. + if merged_content == latest_version.content + && new_relative_path == latest_version.relative_path + && input.idempotency_key.is_none() + { + info!( + "Merged content is the same as the latest version for `{document_id}`, skipping insert" + ); + transaction + .rollback() + .await + .context("Failed to roll back transaction") + .map_err(server_error)?; + + return Ok(Json(DocumentUpdateResponse::FastForwardUpdate( + latest_version.into(), + ))); + } + + let new_version = StoredDocumentVersion { + document_id, + vault_update_id: last_update_id + 1, + relative_path: new_relative_path, + content: merged_content, + updated_date: chrono::Utc::now(), + is_deleted: false, + user_id: user.name, + device_id: device_id.0, + has_been_merged: are_all_participants_mergable && is_different_from_request_content, + idempotency_key: input.idempotency_key, }; state diff --git a/sync-server/src/server/websocket.rs b/sync-server/src/server/websocket.rs index afb3b710..337ef4e3 100644 --- a/sync-server/src/server/websocket.rs +++ b/sync-server/src/server/websocket.rs @@ -6,9 +6,11 @@ use axum::{ }, response::Response, }; +use futures::sink::SinkExt; use futures::stream::StreamExt; use log::{debug, info, warn}; use serde::Deserialize; +use std::time::Duration; use crate::{ app_state::{ @@ -28,6 +30,20 @@ use crate::{ utils::normalize::normalize, }; +const HANDSHAKE_TIMEOUT: Duration = Duration::from_secs(10); + +/// Tracks a pending (not yet authenticated) WebSocket connection. +/// Decrements the counter when dropped, ensuring cleanup even if +/// the upgrade never completes or auth fails. +struct PendingWsGuard(std::sync::Arc); + +impl Drop for PendingWsGuard { + fn drop(&mut self) { + self.0 + .fetch_sub(1, std::sync::atomic::Ordering::Relaxed); + } +} + #[derive(Deserialize)] pub struct WebSocketPathParams { #[serde(deserialize_with = "normalize")] @@ -39,13 +55,42 @@ pub async fn websocket_handler( Path(WebSocketPathParams { vault_id }): Path, State(state): State, ) -> Result { - Ok(ws.on_upgrade(move |socket| websocket_wrapped(state, socket, vault_id))) + // Delegating to a non-async helper avoids a known Rust issue where + // temporary borrows of `state` inside an async fn (before the move into + // `on_upgrade`) cause "Send is not general enough" compilation errors. + websocket_handler_inner(ws, vault_id, state) } -async fn websocket_wrapped(state: AppState, stream: WebSocket, vault_id: VaultId) { +fn websocket_handler_inner( + ws: WebSocketUpgrade, + vault_id: VaultId, + state: AppState, +) -> Result { + let current = state + .pending_ws_connections + .fetch_add(1, std::sync::atomic::Ordering::Relaxed); + if current >= state.config.server.max_pending_websocket_connections { + state + .pending_ws_connections + .fetch_sub(1, std::sync::atomic::Ordering::Relaxed); + return Err(client_error(anyhow::anyhow!( + "Too many pending WebSocket connections" + ))); + } + + let guard = PendingWsGuard(state.pending_ws_connections.clone()); + Ok(ws.on_upgrade(move |socket| websocket_wrapped(state, socket, vault_id, guard))) +} + +async fn websocket_wrapped( + state: AppState, + stream: WebSocket, + vault_id: VaultId, + pending_guard: PendingWsGuard, +) { info!("WebSocket connection opened on vault `{vault_id}`"); - let result = websocket(state, stream, vault_id.clone()).await; + let result = websocket(state, stream, vault_id.clone(), pending_guard).await; if let Err(err) = result { debug!("WebSocket connection error on vault `{vault_id}`: {err}"); @@ -57,25 +102,53 @@ async fn websocket( state: AppState, stream: WebSocket, vault_id: VaultId, + pending_guard: PendingWsGuard, ) -> Result<(), SyncServerError> { let (mut sender, mut websocket_receiver) = stream.split(); - let authed_handshake = get_authenticated_handshake( - &state, - &vault_id, - websocket_receiver - .next() - .await - .transpose() - .unwrap_or_default(), - )?; + let handshake_msg = tokio::time::timeout(HANDSHAKE_TIMEOUT, websocket_receiver.next()) + .await + .map_err(|_| client_error(anyhow::anyhow!("WebSocket handshake timed out")))? + .transpose() + .map_err(|e| client_error(anyhow::anyhow!("WebSocket error during handshake: {e}")))?; + + let authed_handshake = get_authenticated_handshake(&state, &vault_id, handshake_msg)?; info!( "WebSocket handshake successful for vault `{vault_id}` for `{}`", authed_handshake.handshake.device_id ); - let mut broadcast_receiver = state.broadcasts.get_receiver(vault_id.clone()).await; + // Auth complete — no longer a pending connection. + drop(pending_guard); + + let max_clients = state.config.server.max_clients_per_vault; + let mut broadcast_receiver = match state + .broadcasts + .get_receiver(vault_id.clone(), max_clients) + .await + { + Ok(receiver) => receiver, + Err(err) => { + warn!( + "Vault `{vault_id}` has reached the maximum number of clients ({max_clients}), rejecting connection from `{}`", + authed_handshake.handshake.device_id + ); + if let Err(e) = sender + .send(Message::Close(Some(axum::extract::ws::CloseFrame { + code: 4000, + reason: format!( + "Vault has reached the maximum number of clients ({max_clients})" + ) + .into(), + }))) + .await + { + warn!("Failed to send WebSocket close frame: {e}"); + } + return Err(err); + } + }; send_update_over_websocket( &WebSocketServerMessage::VaultUpdate(WebSocketVaultUpdate { @@ -109,9 +182,9 @@ async fn websocket( } let message = match update.message { - WebSocketServerMessage::CursorPositions( - CursorPositionFromServer { clients }, - ) => WebSocketServerMessage::CursorPositions(CursorPositionFromServer { + WebSocketServerMessage::CursorPositions(CursorPositionFromServer { + clients, + }) => WebSocketServerMessage::CursorPositions(CursorPositionFromServer { clients: clients .into_iter() .filter(|client| client.device_id != device_id) @@ -124,14 +197,11 @@ async fn websocket( } Err(tokio::sync::broadcast::error::RecvError::Lagged(n)) => { warn!( - "WebSocket receiver for device {device_id} lagged by {n} messages, \ - disconnecting for re-sync" + "WebSocket receiver lagged, dropped {n} messages — disconnecting client to force full resync" ); break; } - Err(tokio::sync::broadcast::error::RecvError::Closed) => { - break; - } + Err(tokio::sync::broadcast::error::RecvError::Closed) => break, } } @@ -142,26 +212,64 @@ async fn websocket( let vault_id_clone = vault_id.clone(); let cursor_manager = state.cursors.clone(); let mut receive_task = tokio::spawn(async move { - while let Some(Ok(Message::Text(message))) = websocket_receiver.next().await { - let message: WebSocketClientMessage = serde_json::from_str(&message) - .context("Failed to parse WebSocket message from client") - .map_err(server_error)?; + while let Some(msg) = websocket_receiver.next().await { + match msg { + Ok(Message::Text(message)) => { + let message: WebSocketClientMessage = serde_json::from_str(&message) + .context("Failed to parse WebSocket message from client") + .map_err(client_error)?; - match message { - WebSocketClientMessage::Handshake(_) => { - return Err(client_error(anyhow::anyhow!( - "Unexpected handshake message" - ))); + match message { + WebSocketClientMessage::Handshake(_) => { + return Err(client_error(anyhow::anyhow!( + "Unexpected handshake message" + ))); + } + WebSocketClientMessage::CursorPositions(cursors) => { + const MAX_CURSOR_DOCUMENTS: usize = 1000; + const MAX_CURSORS_PER_DOCUMENT: usize = 100; + const MAX_RELATIVE_PATH_LEN: usize = 4096; + + let docs = cursors.documents_with_cursors; + if docs.len() > MAX_CURSOR_DOCUMENTS { + warn!( + "Cursor update rejected: {} documents exceeds limit of {MAX_CURSOR_DOCUMENTS}", + docs.len() + ); + continue; + } + + let valid = docs.iter().all(|doc| { + doc.cursors.len() <= MAX_CURSORS_PER_DOCUMENT + && doc.relative_path.len() <= MAX_RELATIVE_PATH_LEN + }); + if !valid { + warn!("Cursor update rejected: a document exceeds cursor or path length limits"); + continue; + } + + cursor_manager + .update_cursors( + vault_id_clone.clone(), + authed_handshake.user.name.clone(), + &device_id, + docs, + ) + .await; + } + WebSocketClientMessage::Ping {} => { + // Ping is a no-op for now; the variant exists for future keep-alive support. + } + } } - WebSocketClientMessage::CursorPositions(cursors) => { - cursor_manager - .update_cursors( - vault_id_clone.clone(), - authed_handshake.user.name.clone(), - &device_id, - cursors.documents_with_cursors, - ) - .await; + Ok(Message::Close(_)) => break, + Ok(Message::Binary(_)) => { + warn!("Received unexpected binary WebSocket message, ignoring"); + } + Ok(_) => {} // Ping/Pong frames handled by axum + Err(e) => { + debug!("WebSocket receive error: {e}"); + break; } } } @@ -169,38 +277,47 @@ async fn websocket( Ok::<(), SyncServerError>(()) }); - tokio::select! { - _ = &mut send_task => receive_task.abort(), - _ = &mut receive_task => send_task.abort(), + let result: Result<(), SyncServerError> = tokio::select! { + send_result = &mut send_task => { + receive_task.abort(); + let _ = receive_task.await; + match send_result { + Err(e) => Err(server_error( + anyhow::Error::from(e).context("WebSocket send task failed"), + )), + Ok(inner) => inner, + } + }, + receive_result = &mut receive_task => { + send_task.abort(); + let _ = send_task.await; + match receive_result { + Err(e) => Err(server_error( + anyhow::Error::from(e).context("WebSocket receive task failed"), + )), + Ok(inner) => inner, + } + }, }; - let result: Result<(), SyncServerError> = (async { - send_task - .await - .context("WebSocket send task failed") - .map_err(client_error) - .and_then(|err| err)?; - - receive_task - .await - .context("WebSocket receive task failed") - .map_err(client_error) - .and_then(|err| err)?; - - Ok(()) - }) - .await; - state .cursors .remove_cursors_of_device(&vault_id, &authed_handshake.handshake.device_id) .await; - if result.is_err() { - info!( - "WebSocket disconnected on vault `{vault_id}` for `{}`", - authed_handshake.handshake.device_id - ); + match &result { + Ok(()) => { + info!( + "WebSocket disconnected on vault `{vault_id}` for `{}`", + authed_handshake.handshake.device_id + ); + } + Err(err) => { + warn!( + "WebSocket error on vault `{vault_id}` for `{}`: {err}", + authed_handshake.handshake.device_id + ); + } } result diff --git a/sync-server/src/utils.rs b/sync-server/src/utils.rs index b501ecb2..08db4b75 100644 --- a/sync-server/src/utils.rs +++ b/sync-server/src/utils.rs @@ -1,3 +1,4 @@ +pub mod decode_text; pub mod dedup_paths; pub mod find_first_available_path; pub mod is_binary; diff --git a/sync-server/src/utils/decode_text.rs b/sync-server/src/utils/decode_text.rs new file mode 100644 index 00000000..4172a7eb --- /dev/null +++ b/sync-server/src/utils/decode_text.rs @@ -0,0 +1,41 @@ +/// Decode bytes as UTF-8. +/// +/// Returns `None` if the content is not valid UTF-8. +/// +/// Clients are expected to transcode UTF-16 content to UTF-8 before +/// sending, so the server only needs to handle UTF-8 text and binary. +pub fn decode_text(data: &[u8]) -> Option { + std::str::from_utf8(data).ok().map(String::from) +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_utf8() { + assert_eq!(decode_text(b"hello"), Some("hello".to_owned())); + } + + #[test] + fn test_utf8_with_bom() { + // UTF-8 BOM is valid UTF-8 — the BOM character is preserved in the string + assert_eq!( + decode_text(&[0xEF, 0xBB, 0xBF, b'h', b'i']), + Some("\u{FEFF}hi".to_owned()) + ); + } + + #[test] + fn test_binary_returns_none() { + assert_eq!(decode_text(&[0x80, 0x81, 0x82]), None); + } + + #[test] + fn test_nul_bytes_are_valid() { + assert_eq!( + decode_text(b"hello\x00world"), + Some("hello\x00world".to_owned()) + ); + } +} diff --git a/sync-server/src/utils/dedup_paths.rs b/sync-server/src/utils/dedup_paths.rs index bc687f6a..b3a03800 100644 --- a/sync-server/src/utils/dedup_paths.rs +++ b/sync-server/src/utils/dedup_paths.rs @@ -1,8 +1,54 @@ +use std::sync::LazyLock; + use regex::Regex; +static DEDUP_SUFFIX_REGEX: LazyLock = + LazyLock::new(|| Regex::new(r" \((\d+)\)$").expect("invalid regex")); + +/// Strip the ` (N)` deconfliction suffix from a path, returning the base path. +/// e.g., `"binary-2 (3).bin"` → `"binary-2.bin"`, `"binary-2.bin"` → `"binary-2.bin"` +pub fn get_base_path(path: &str) -> String { + let mut path_parts = path.split('/').collect::>(); + let Some(file_name) = path_parts.pop() else { + return path.to_owned(); + }; + if file_name.is_empty() { + return path.to_owned(); + } + let file_name = file_name.to_owned(); + + let mut directory = path_parts.join("/"); + if !directory.is_empty() { + directory.push('/'); + } + + let is_simple_dotfile = file_name.starts_with('.') && file_name.matches('.').count() == 1; + + let (stem, extension) = if is_simple_dotfile { + (file_name.clone(), String::new()) + } else { + let name_parts = file_name.rsplitn(2, '.').collect::>(); + let mut reverse_parts = name_parts.into_iter().rev(); + match (reverse_parts.next(), reverse_parts.next()) { + (Some(s), maybe_ext) => ( + s.to_owned(), + maybe_ext.map(|ext| format!(".{ext}")).unwrap_or_default(), + ), + _ => unreachable!("Path must have at least one part"), + } + }; + + let clean_stem = DEDUP_SUFFIX_REGEX.replace(&stem, "").to_string(); + format!("{directory}{clean_stem}{extension}") +} + pub fn dedup_paths(path: &str) -> impl Iterator { let mut path_parts = path.split('/').collect::>(); - let file_name = path_parts.pop().unwrap().to_owned(); + let file_name = path_parts + .pop() + .filter(|s| !s.is_empty()) + .unwrap_or(path) + .to_owned(); let mut directory = path_parts.join("/"); if !directory.is_empty() { @@ -29,14 +75,13 @@ pub fn dedup_paths(path: &str) -> impl Iterator { } }; - let regex = Regex::new(r" \((\d+)\)$").unwrap(); - let start_number = regex + let start_number = DEDUP_SUFFIX_REGEX .captures(&stem) .and_then(|caps| caps.get(1)) .and_then(|m| m.as_str().parse::().ok()) .unwrap_or(0); - let clean_stem = regex.replace(&stem, "").to_string(); + let clean_stem = DEDUP_SUFFIX_REGEX.replace(&stem, "").to_string(); (start_number..).map(move |dedup_number| { if dedup_number == 0 { diff --git a/sync-server/src/utils/find_first_available_path.rs b/sync-server/src/utils/find_first_available_path.rs index 20a0a656..97a2acd7 100644 --- a/sync-server/src/utils/find_first_available_path.rs +++ b/sync-server/src/utils/find_first_available_path.rs @@ -1,17 +1,26 @@ use crate::app_state::database::models::VaultId; -use crate::{app_state::database::Transaction, utils::dedup_paths::dedup_paths}; -use anyhow::Result; +use crate::utils::dedup_paths::dedup_paths; +use anyhow::{Result, bail}; use log::info; +use sqlx::sqlite::SqliteConnection; + +const MAX_DEDUP_ATTEMPTS: usize = 100_000; pub async fn find_first_available_path( vault_id: &VaultId, sanitized_relative_path: &str, database: &crate::app_state::database::Database, - transaction: &mut Transaction<'_>, + connection: &mut SqliteConnection, ) -> Result { - for candidate in dedup_paths(sanitized_relative_path) { + for (attempt, candidate) in dedup_paths(sanitized_relative_path).enumerate() { + if attempt >= MAX_DEDUP_ATTEMPTS { + bail!( + "Could not find an available path after {MAX_DEDUP_ATTEMPTS} attempts for `{sanitized_relative_path}` in vault `{vault_id}`" + ); + } + if database - .get_latest_non_deleted_document_by_path(vault_id, &candidate, Some(transaction)) + .get_latest_non_deleted_document_by_path(vault_id, &candidate, Some(connection)) .await? .is_none() { @@ -24,5 +33,5 @@ pub async fn find_first_available_path( ); } - unreachable!("dedup_paths produces infinite paths"); + bail!("dedup_paths iterator unexpectedly exhausted"); } diff --git a/sync-server/src/utils/is_binary.rs b/sync-server/src/utils/is_binary.rs index 09bfcf94..24ca5c1d 100644 --- a/sync-server/src/utils/is_binary.rs +++ b/sync-server/src/utils/is_binary.rs @@ -1,16 +1,12 @@ -/// Heuristically determine if the given data is a binary or a text file's -/// content. +use super::decode_text::decode_text; + +/// Determine if the given data is binary (not valid UTF-8). /// -/// Only text inputs can be reconciled using the crate's functions. +/// Clients transcode UTF-16 to UTF-8 at the read boundary, so the +/// server only ever receives UTF-8 text or binary content. #[must_use] pub fn is_binary(data: &[u8]) -> bool { - if data.contains(&0) { - // Even though the NUL character is valid in UTF-8, it's highly suspicious in - // human-readable text. - return true; - } - - std::str::from_utf8(data).is_err() + decode_text(data).is_none() } #[cfg(test)] @@ -19,8 +15,13 @@ mod tests { #[test] fn test_is_binary() { - assert!(is_binary(&[0, 159, 146, 150])); - assert!(is_binary(&[0, 12])); + assert!(is_binary(&[0x80, 0x81, 0x82])); assert!(!is_binary(b"hello")); } + + #[test] + fn test_nul_bytes_in_utf8_are_text() { + assert!(!is_binary(b"hello\x00world")); + assert!(!is_binary(&[0, 12])); + } } diff --git a/sync-server/src/utils/rotating_file_writer.rs b/sync-server/src/utils/rotating_file_writer.rs index f04f9ba9..1c5c86c5 100644 --- a/sync-server/src/utils/rotating_file_writer.rs +++ b/sync-server/src/utils/rotating_file_writer.rs @@ -6,7 +6,7 @@ use std::{ time::{Duration, SystemTime, UNIX_EPOCH}, }; -use chrono::{Local, NaiveDateTime}; +use chrono::NaiveDateTime; use tracing_subscriber::fmt::MakeWriter; #[derive(Clone)] @@ -55,7 +55,7 @@ impl RotatingFileWriter { let timestamp_str = filename.get(prefix_len..filename.len().checked_sub(4)?)?; let dt = NaiveDateTime::parse_from_str(timestamp_str, "%Y-%m-%d_%H-%M-%S").ok()?; - let timestamp = dt.and_local_timezone(Local).single()?; + let timestamp = dt.and_utc(); let secs: u64 = timestamp.timestamp().try_into().ok()?; Some(UNIX_EPOCH + Duration::from_secs(secs)) @@ -114,7 +114,7 @@ impl RotatingFileWriter { } fn rotate(inner: &mut RotatingFileWriterInner) -> io::Result<()> { - let timestamp = Local::now().format("%Y-%m-%d_%H-%M-%S"); + let timestamp = chrono::Utc::now().format("%Y-%m-%d_%H-%M-%S"); let filename = format!("{}.{}.log", inner.file_prefix, timestamp); let filepath = inner.directory.join(filename); @@ -132,8 +132,14 @@ impl RotatingFileWriter { impl Write for RotatingFileWriter { fn write(&mut self, buf: &[u8]) -> io::Result { - let mut inner = self.inner.lock().unwrap(); + let mut inner = self.inner.lock().unwrap_or_else(|poisoned| { + eprintln!("RotatingFileWriter mutex was poisoned, recovering"); + poisoned.into_inner() + }); + // Reset file handle after poison recovery so the next branch + // re-opens a valid file rather than writing to a potentially + // half-closed handle. if inner.current_file.is_none() { Self::open_or_create_log_file(&mut inner)?; } else if Self::should_rotate(&inner) { @@ -148,7 +154,10 @@ impl Write for RotatingFileWriter { } fn flush(&mut self) -> io::Result<()> { - let mut inner = self.inner.lock().unwrap(); + let mut inner = self.inner.lock().unwrap_or_else(|poisoned| { + eprintln!("RotatingFileWriter mutex was poisoned, recovering"); + poisoned.into_inner() + }); if let Some(ref mut file) = inner.current_file { file.flush() } else { @@ -267,7 +276,7 @@ mod tests { // Parse the expected time let expected_dt = NaiveDateTime::parse_from_str(timestamp_str, "%Y-%m-%d_%H-%M-%S").unwrap(); - let expected_timestamp = expected_dt.and_local_timezone(Local).single().unwrap(); + let expected_timestamp = expected_dt.and_utc(); let expected_duration = Duration::from_secs(expected_timestamp.timestamp().try_into().unwrap()); let expected_next = UNIX_EPOCH + expected_duration + rotation_duration; @@ -306,7 +315,7 @@ mod tests { // Should use the latest file (2025-10-26_14-00-00) let expected_dt = NaiveDateTime::parse_from_str("2025-10-26_14-00-00", "%Y-%m-%d_%H-%M-%S").unwrap(); - let expected_timestamp = expected_dt.and_local_timezone(Local).single().unwrap(); + let expected_timestamp = expected_dt.and_utc(); let expected_duration = Duration::from_secs(expected_timestamp.timestamp().try_into().unwrap()); let expected_next = UNIX_EPOCH + expected_duration + rotation_duration;