https://github.com/mlangc/zio-interop-log4j2

ZIO Fiber aware MDC logging for LOG4J2
https://github.com/mlangc/zio-interop-log4j2

log4j2 scala zio

Last synced: about 2 months ago
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ZIO Fiber aware MDC logging for LOG4J2

• Host: GitHub
• URL: https://github.com/mlangc/zio-interop-log4j2
• Owner: mlangc
• License: apache-2.0
• Created: 2019-09-14T08:17:22.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2022-01-02T21:44:39.000Z (over 2 years ago)
• Last Synced: 2024-05-20T22:14:50.759Z (4 months ago)
• Topics: log4j2, scala, zio
• Language: Scala
• Size: 34.2 KB
• Stars: 8
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.MD
  • License: LICENSE

Awesome Lists containing this project

• awesome-zio - zio-interop-log4j2

README

        
# ZIO Interop Log4J2

[![Latest Release](https://img.shields.io/maven-central/v/com.github.mlangc/zio-interop-log4j2_2.13?color=green&label=latest-release)](https://oss.sonatype.org/content/repositories/releases/com/github/mlangc/zio-interop-log4j2_2.13)

[![Latest Snapshot](https://img.shields.io/nexus/s/com.github.mlangc/zio-interop-log4j2_2.13?label=latest-snapshot&server=https%3A%2F%2Foss.sonatype.org)](https://oss.sonatype.org/content/repositories/snapshots/com/github/mlangc/zio-interop-log4j2_2.13/)

This library provides ZIO fiber aware MDC logging for Log4j 2.

## Usage

1. Add `libraryDependencies += "com.github.mlangc" %% "zio-interop-log4j2" % version` to your `build.sbt`

1. Add `-Dlog4j2.threadContextMap=com.github.mlangc.zio.interop.log4j2.FiberAwareThreadContextMap` to your JVM startup parameters. If you can't,

  try to set the `log4j2.threadContextMap` system property programmatically as early as you can. The property must be set before Log4j2 is

  initialized.

1. Integrate `com.github.mlangc.zio.interop.log4j2.FiberAwareThreadContextMap.assertInitialized` into your initialization code. Fiber aware MDC

   logging will not work properly without this call.

1. Use `org.slf4j.MDC` as you would normally and observe that it now respects fiber boundaries.

1. If you start getting annoyed by wrapping interactions with `MDC` in ZIO effects, take a look at [slf4zio](https://github.com/mlangc/slf4zio)

   which ships an `MDC` convenience wrapper for ZIO called `MDZIO`.