93 lines
3.1 KiB
Python
93 lines
3.1 KiB
Python
from contextvars import ContextVar
|
|
from datetime import datetime
|
|
from types import TracebackType
|
|
from typing import Any, Dict, Generic, List, Literal, Optional, Type, TypeVar, cast
|
|
from uuid import uuid4
|
|
|
|
from ..constants import DEVELOPMENT_TAG_NAME, ONLINE_TAG_NAME, PRODUCTION_TAG_NAME
|
|
from ..context import get_context
|
|
from ..views import Model, Trace
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
class TracingContext(Generic[T]):
|
|
def __init__(self, function_name: str, do_not_persist_traces: bool) -> None:
|
|
self._do_not_persist_traces = do_not_persist_traces
|
|
self._models: List[Model] = []
|
|
self._values: Dict[str, Any] = {}
|
|
self._trace: Optional[Trace[T]] = None
|
|
self._start_time = datetime.utcnow()
|
|
self._name = function_name
|
|
|
|
def log_value(self, name: str, value: Any) -> None:
|
|
self._values[name] = value
|
|
|
|
def log_model(self, model: Model) -> None:
|
|
self._models.append(model)
|
|
|
|
def finalise(
|
|
self, output: Optional[T] = None, exception: Optional[BaseException] = None
|
|
) -> Trace[T]:
|
|
assert self._trace is None, "has been already finalised"
|
|
|
|
delta_time = (datetime.utcnow() - self._start_time).microseconds / 1000
|
|
self._trace = cast(
|
|
Trace[T],
|
|
Trace( # avoid ValueError: "Trace" object has no field "__orig_class__"
|
|
trace_id=str(uuid4()),
|
|
created=self._start_time.isoformat(),
|
|
original_execution_time_ms=delta_time,
|
|
logged_values=self._values,
|
|
models=self._models,
|
|
output=output,
|
|
exception=None
|
|
if exception is None
|
|
else f"{type(exception).__name__}: {exception}",
|
|
tags=[
|
|
self._name,
|
|
ONLINE_TAG_NAME,
|
|
PRODUCTION_TAG_NAME
|
|
if get_context().is_production
|
|
else DEVELOPMENT_TAG_NAME,
|
|
],
|
|
),
|
|
)
|
|
|
|
return self._trace
|
|
|
|
@staticmethod
|
|
def get_current_tracing_context() -> Optional["TracingContext"]:
|
|
return _current_tracing_context.get()
|
|
|
|
def __enter__(self) -> "TracingContext":
|
|
_current_tracing_context.set(self)
|
|
return self
|
|
|
|
def __exit__(
|
|
self,
|
|
type: Optional[Type[BaseException]],
|
|
exception: Optional[BaseException],
|
|
traceback: Optional[TracebackType],
|
|
) -> Literal[False]:
|
|
_current_tracing_context.set(None)
|
|
|
|
if exception is not None and type is not None:
|
|
self.finalise(exception=exception)
|
|
if get_context().should_log_exception_stack:
|
|
get_context().logger.exception("Could not finish operation")
|
|
else:
|
|
get_context().logger.error(
|
|
f"Could not finish operation because of {type.__name__}: {exception}"
|
|
)
|
|
|
|
assert self._trace is not None
|
|
if not self._do_not_persist_traces:
|
|
get_context().tracing_database.save(self._trace)
|
|
|
|
return False
|
|
|
|
|
|
_current_tracing_context: ContextVar[Optional[TracingContext]] = ContextVar(
|
|
"_current_tracing_context"
|
|
)
|