synapse/scripts-dev
Quentin Gliech 0de7aa9953
Enable flake8-logging and flake8-logging-format rules in Ruff and fix related issues throughout the codebase (#18542)
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This enables the `flake8-logging` and `flake8-logging-format` rules in
Ruff, as well as logging exception stack traces in a few places where it
makes sense

 - https://docs.astral.sh/ruff/rules/#flake8-logging-log
 - https://docs.astral.sh/ruff/rules/#flake8-logging-format-g

### Linting to avoid pre-formatting log messages

See [`adamchainz/flake8-logging` -> *LOG011 avoid pre-formatting log
messages*](152db2f167/README.rst (log011-avoid-pre-formatting-log-messages))

Practically, this means prefer placeholders (`%s`) over f-strings for
logging.

This is because placeholders are passed as args to loggers, so they can
do special handling of them.
For example, Sentry will record the args separately in their logging
integration:
c15b390dfe/sentry_sdk/integrations/logging.py (L280-L284)

One theoretical small perf benefit is that log levels that aren't
enabled won't get formatted, so it doesn't unnecessarily create
formatted strings
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