micrometer-metrics/micrometer

provide a way to exclude some logger from being collected by Log4j2metrics

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#6233 opened on May 13, 2025

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 (7 comments) (0 reactions) (0 assignees)Java (4,220 stars) (935 forks)batch import
help wantedmodule: micrometer-binders

Description

Please describe the feature request.

Now the Log4j2Metrics will count all log events with all levels, that can be noisy if we don't care about some loggers, we don't want the loggers be collected into the log4j.events counters

We are hoping that we can exclude some loggers from being collected by the Log4j2Metrics.

For example:

I don't want the logger of "com.a.b.c" to be collected by the Log4j2Metrics

Contributor guide

Tech stack
java
Domain
observabilitybackend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic Java knowledgeFamiliarity with Log4j2Understanding of Micrometer metrics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Start by examining the Log4j2Metrics class in the micrometer core module to understand how log events are currently collected. Look for existing filter or exclusion mechanisms in other Micrometer metrics implementations (e.g., JvmMetrics, TomcatMetrics) for inspiration. The goal is to add a configuration option (e.g., through MeterFilter or a properties file) that allows excluding certain logger names from being counted. Check the issue comments for any maintainer suggestions or user feedback. Review the source code at https://github.com/micrometer metrics/micrometer/tree/main/micrometer core/src/main/java/io/micrometer/core/instrument/binder/logging for context.