33 lines
1 KiB
Python
33 lines
1 KiB
Python
from collections.abc import AsyncIterator
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from contextlib import asynccontextmanager
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from opentelemetry.instrumentation.fastapi import FastAPIInstrumentor
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from adapter.di.container import build_container
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from adapter.http.fastapi.dependencies import APP_CONFIG_STATE, APP_CONTAINER_STATE
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from fastapi import FastAPI
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@asynccontextmanager
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async def app_lifespan(app: FastAPI) -> AsyncIterator[None]:
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config = getattr(app.state, APP_CONFIG_STATE, None)
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if config is None:
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raise RuntimeError('config unavailable')
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container = build_container(config=config)
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instrumented = False
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setattr(app.state, APP_CONTAINER_STATE, container)
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try:
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tracer_provider = container.observability.tracer_provider
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if tracer_provider is not None:
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FastAPIInstrumentor.instrument_app(
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app,
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tracer_provider=tracer_provider,
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)
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instrumented = True
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yield
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finally:
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if instrumented:
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FastAPIInstrumentor.uninstrument_app(app)
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container.shutdown()
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