Log propagation issue

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
64/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
fastapi, python
Domain
api, backend

Research direction

Start at the server startup entry point that calls uvicorn.run and inspect how its logging configuration is passed. Reproduce serving with uvicorn, then verify that server logs reach the root logger while access-log noise remains appropriately filtered when writing log files.

Written by the indexing model from the issue text.

Description

Describe the bug
Not all logs propagate to the root logger when serving with uvicorn.

In the OpenFlexure server we fix this by doing:

log_config = copy(uvicorn.config.LOGGING_CONFIG)
log_config["loggers"]["uvicorn"]["propagate"] = True
log_config["loggers"]["uvicorn.access"]["propagate"] = True

...

uvicorn.run(
    server.app,
    host=args.host,
    port=args.port,
    log_config=log_config,
    timeout_graceful_shutdown=2,
)

Note that log_config["loggers"]["uvicorn.access"]["propagate"] = True is a bit noisy, we filter out most of them when writing log files.

Dominant language
Python
Stars
9
Forks
4
PR merge metrics
No merged PRs in 30d

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