Getting worker ID (not PID) in Python

[tyler-8]

Is there a way to get the current ID of a worker from within my app?

There's a scenario with the Python prometheus client and multi-processed wsgi servers that leads to inaccurate metrics if using gunicorn or uwsgi out of the box. But with uwsgi there's a way to retrieve the more "stable" worker ID to work around the issue.

In transitioning to granian I wonder if there's a similar path today, or would this require new functionality (if it's even possible without major architectural changes). The only clue I'm somewhat working off of is that the granian logs number workers in a similar way to uwsgi: worker-1, worker-2, etc.

if "prometheus_multiproc_dir" in os.environ:
    try:
        import prometheus_client
        import uwsgi
        prometheus_client.values.ValueClass = prometheus_client.values.MultiProcessValue(
            _pidFunc=uwsgi.worker_id)
    except ImportError:
        pass  # not running in uwsgi

[gi0baro]

No, at present time there's no way to get the worker ID from within the worker process.

Also not sure what changes would be required in Granian to support something like uwsgi, as I never thought about this functionality.

[muety]

Would love to have this feature! When Starting granian, the worker indexes are already being logged, so I can imagine it wouldn't be that hard to expose these IDs as an environment variable specific to the respective worker process?

[INFO] Spawning worker-1 with PID: 26551
[INFO] Spawning worker-2 with PID: 26553