Set Bokeh logging to INFO

[hoxbro]

Fixes #2302

Beforehand, this will not output logs because distributed sets the logger level to error. Not sure if we need to have a setting for this.

import distributed  # noqa
import panel as pn
pn.panel("A").servable()

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.25%. Comparing base (70a27c9) to head (37765cb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4916      +/-   ##
==========================================
- Coverage   81.73%   81.25%   -0.49%     
==========================================
  Files         326      326              
  Lines       48006    48003       -3     
==========================================
- Hits        39236    39003     -233     
- Misses       8770     9000     +230     

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[maximlt]

I want to carefully review this as I have code that relies on logging and have found that setting this up is difficult in general.

[philippjfr]

@maximlt How's the careful review going? 😄

[maximlt]

It looks like I have carefully managed not to get to review it :( I promise this will be done this week!

[maximlt]

(I rebased this PR to be able to test it).

I'm -1 on the change as is. It's setting the log level of Bokeh's logger to INFO, ignoring what the user may have configured via BOKEH_PY_LOG_LEVEL or --log-level or whatever logger customisation they might have done in a --setup file.

I opened an issue to report the problem upstream dask/distributed#8750.

[maximlt]

There's in fact already a PR to stop setting the logs on import dask/distributed#8634.