Consider making logging more granular

[MeltyBot]

Migrated from GitLab: https://gitlab.com/meltano/sdk/-/issues/335

Originally created by @edgarrmondragon on 2022-02-24 03:15:15

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Summary

Leverage Python's dot-separated logger hierarchy to give developers more control over logging behavior and make it more granular:

• Behavior: handler, format, level
• Source: tap, stream, SDK.

Proposed benefits

Developers can make output more or less verbose for certain streams, etc.

Proposal details

>>> import logging
>>> formatter = logging.Formatter("{asctime} {levelname} {message}", style="{")
>>> handler = logging.StreamHandler()
>>> handler.setFormatter(formatter)
>>> tap_logger = logging.getLogger("tap-example")
>>> tap_logger.addHandler(handler)
>>> tap_logger.setLevel(logging.INFO)  # Display INFO and up
>>> stream_logger = logging.getLogger("tap-example.my_stream")
>>> stream_logger.setLevel(logging.WARNING)  # Display WARNING and up
>>> tap_logger.debug("Info from tap")
>>> tap_logger.info("Info from tap")
2022-02-23 21:10:34,165 INFO Info from tap
>>> stream_logger.info("Info from stream")  # No output at this level!
>>> stream_logger.warning("Warning from stream")
2022-02-23 21:10:34,175 WARNING Warning from stream

Best reasons not to build

We may not want developers to make their packages to quiet so end-users have useful debugging information by default.

[MeltyBot]

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