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https://issues.apache.org/jira/browse/LOG4J2-2975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17296679#comment-17296679
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Ralph Goers edited comment on LOG4J2-2975 at 3/6/21, 11:47 PM:
---------------------------------------------------------------
I've looked at how SLF4J has added the support for the LogEvent builder. It
should be possible to implement the support in our 1.8 implementation. It just
requires overriding
{code:java}
default public LoggingEventBuilder makeLoggingEventBuilder(Level level) {
return new DefaultLoggingEventBuilder(this, level);
}
{code}
in our Logger implementation with something that works better with Log4j2.
was (Author: [email protected]):
I've looked at how SLF4J has added the support for the LogEvent builder. It
should be possible to implement the support in our 1.8 implementation. It just
requires overriding
{code:java}
default public LoggingEventBuilder makeLoggingEventBuilder(Level level) {
return new DefaultLoggingEventBuilder(this, level);
}
{code}
with in our Logger implementation with something that works better with Log4j2.
> SLF4J fluent API fails to capture call site location due to missing
> LoggingEventAware implementation
> ----------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-2975
> URL: https://issues.apache.org/jira/browse/LOG4J2-2975
> Project: Log4j 2
> Issue Type: Bug
> Components: SLF4J Bridge
> Affects Versions: 2.13.3
> Reporter: Daniel Gray
> Priority: Major
>
> The logger outputs the wrong log line (120 for INFO, 117 for DEBUG, etc.)
> instead of the line in the program that generated the log, when running with
> the slf4j bridge. *This causes potential confusion when a person debugging
> something is reading the logs as the line numbers are wrong!*
> I have prepared 2 simple CLI apps to show the correct behavior (with only
> Log4J) and the incorrect behavior (with the SLF4J bridge). Both are using the
> exact same configuration (log4j2.properties). The repositories of these
> sample projects are:
> Good behavior with a pure log4j:
> [https://github.com/danielthegray/log4j-nobugsample]
> Wrong behavior with the slf4j bridge:
> [https://github.com/danielthegray/slf4j-bugsample]
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