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Add event handler class

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Andras Schmelczer 2025-12-07 13:30:45 +00:00
parent 1ea465fcf8
commit 496db06213
14 changed files with 2428 additions and 2309 deletions
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113
frontend/sync-client/src/tracing/logger.ts
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@ -1,87 +1,72 @@
import { MAX_LOG_MESSAGE_COUNT } from "../consts";
import { removeFromArray } from "../utils/remove-from-array";
import { EventListeners } from "../utils/data-structures/event-listeners";
export enum LogLevel {
DEBUG = "DEBUG",
INFO = "INFO",
WARNING = "WARNING",
ERROR = "ERROR"
DEBUG = "DEBUG",
INFO = "INFO",
WARNING = "WARNING",
ERROR = "ERROR"
}
const LOG_LEVEL_ORDER = {
[LogLevel.DEBUG]: 0,
[LogLevel.INFO]: 1,
[LogLevel.WARNING]: 2,
[LogLevel.ERROR]: 3
[LogLevel.DEBUG]: 0,
[LogLevel.INFO]: 1,
[LogLevel.WARNING]: 2,
[LogLevel.ERROR]: 3
};
export class LogLine {
public timestamp = new Date();
public constructor(
public level: LogLevel,
public message: string
) {}
public timestamp = new Date();
public constructor(
public level: LogLevel,
public message: string
) { }
}
export class Logger {
private readonly messages: LogLine[] = [];
private readonly onMessageListeners: ((message: LogLine) => unknown)[] = [];
private readonly messages: LogLine[] = [];
public readonly onLogEmitted = new EventListeners<
(message: LogLine) => unknown
>();
public constructor(
...onMessageListeners: ((message: LogLine) => unknown)[]
) {
this.onMessageListeners = onMessageListeners;
}
public debug(message: string): void {
this.pushMessage(message, LogLevel.DEBUG);
}
public debug(message: string): void {
this.pushMessage(message, LogLevel.DEBUG);
}
public info(message: string): void {
this.pushMessage(message, LogLevel.INFO);
}
public info(message: string): void {
this.pushMessage(message, LogLevel.INFO);
}
public warn(message: string): void {
this.pushMessage(message, LogLevel.WARNING);
}
public warn(message: string): void {
this.pushMessage(message, LogLevel.WARNING);
}
public error(message: string): void {
this.pushMessage(message, LogLevel.ERROR);
}
public error(message: string): void {
this.pushMessage(message, LogLevel.ERROR);
}
public getMessages(mininumSeverity: LogLevel): LogLine[] {
return this.messages.filter(
(message) =>
LOG_LEVEL_ORDER[message.level] >=
LOG_LEVEL_ORDER[mininumSeverity]
);
}
public getMessages(mininumSeverity: LogLevel): LogLine[] {
return this.messages.filter(
(message) =>
LOG_LEVEL_ORDER[message.level] >=
LOG_LEVEL_ORDER[mininumSeverity]
);
}
public addOnMessageListener(listener: (message: LogLine) => unknown): void {
this.onMessageListeners.push(listener);
}
public reset(): void {
this.messages.length = 0;
this.debug("Logger has been reset");
}
public removeOnMessageListener(
listener: (message: LogLine) => unknown
): void {
removeFromArray(this.onMessageListeners, listener);
}
private pushMessage(message: string, level: LogLevel): void {
const logLine = new LogLine(level, message);
this.messages.push(logLine);
public reset(): void {
this.messages.length = 0;
this.debug("Logger has been reset");
}
while (this.messages.length > MAX_LOG_MESSAGE_COUNT) {
this.messages.shift();
}
private pushMessage(message: string, level: LogLevel): void {
const logLine = new LogLine(level, message);
this.messages.push(logLine);
while (this.messages.length > MAX_LOG_MESSAGE_COUNT) {
this.messages.shift();
}
this.onMessageListeners.forEach((listener) => {
listener(logLine);
});
}
this.onLogEmitted.trigger(logLine);
}
}