typelevel / typelevel/log4cats

FiberLocal / IOLocal logger wrapper

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#461 4 comments 9 reactions 0 assignees View on GitHub

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Dominant language
Scala
Stars
416
Forks
77
Avg merge
6h 25m
Merged PRs (30d)
3

Description

hopefully self-explanatory: it would be great to have a wrapper for loggers that would allow one to pass structured logging context in a more implicit fashion.

This would probably involve creating a root logging context (the default value of the IOLocal), then using that in a wrapped logger so it passes the context to the underlying logger (e.g. slf4j).

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the existing logger abstraction and how FiberLocal or IOLocal is used in the project; the issue names no files or tests. Clarify the root logging context, the wrapped logger's API, and how context reaches the underlying logger such as slf4j. Done should include an agreed design and coverage for implicit structured context propagation.

Written by the indexing model from the issue text.

Assessment

Tech stack
scala
Domain
observability
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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