Log4j1 Appender¶

Custom appender for log4j1 to track the number of log messages reported.

Note

Log4j 1.x has reached end of life and is no longer supported by Apache. This extension is provided for some users that have difficulty moving to a supported version of log4j.

Getting Started¶

To use it simply add a dependency:

com.netflix.spectator:spectator-ext-log4j1:${version}

Then in your log4j configuration specify the com.netflix.spectator.log4j.SpectatorAppender. In a properties file it would look something like:

log4j.rootLogger=ALL, A1
log4j.appender.A1=com.netflix.spectator.log4j.SpectatorAppender

Metrics¶

log4j.numMessages¶

Counters showing the number of messages that have been passed to the appender.

Unit: messages/second

Dimensions:

loglevel: standard log level of the events.

log4j.numStackTraces¶

Counter for the number of messages with stack traces written to the logs.

Unit: messages/second

Dimensions:

loglevel: standard log level of the events.
exception: simple class name for the exception that was thrown.
file: file name for where the exception was thrown.