CODEWITHSUNDEEP
javaloggingslf4j
xconspirisist
xconspirisist

Reputation: 1461

Automatically mark slf4j parameterized variables?

I am using slf4j. I have lots of log statements that look like this;

LOG.debug("I like {} and {}", new Object[] { "foo", "bar" });

When this log statement is executed, I get logs that look like this; 

I like foo and bar

As expected. However, I would like log message parameters to have additional formatting, to make it much easier for log parsers. An desired log message that literally looks like this;

I like [foo] and [bar]

Obviously I could update the literal log statement to I like [{}] and [{}], but this is a lot of change, makes the log statements look unessessarily messy and isn't very flexible for the future.

Could somebody suggest a quicker solution while still keeping with slf4j? The implementation I am using is logback-classic to do the actual lgoging.

Thanks!

Upvotes: 1

Views: 91

Answers (1)

Adrian Shum
Adrian Shum

Reputation: 40036

If you are using Logback, probably you can construct a custom appender/encoder/layout/converter. In Logback, Appenders are taking in LoggingEvent, which normally delegates to an encoder for which delegate to a layout to construct the message. Have a look on the source code to see which part is the best place for you to do the custom handling.

Upvotes: 1

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