Should SL4FJ addKeyValue method usage work?

[dtanner]

Hi,

I'm trying to only use SLF4J interface methods in my code, yet still be able to produce JSON output with custom key/value fields.

Using the logstash logback library-specific StructuredArguments class works as expected ("somekey" field is output):

logger.atInfo().log("kvmessage", StructuredArguments.keyValue("somekey", "somevalue"))

But using the sl4fj method doesn't appear to work with the logback-logstash encoder. (no "somekey" field is output):

logger.atInfo().addKeyValue("somekey", "somevalue").log("kvmessage")

Is there a technique I can use in the code that does work? FWIW I've also considered Markers, but the problem there is that SLF4J doesn't provide a usable Marker Map implementation out of the box. Thanks for any ideas.

[philsttr]

Hey @dtanner,

Support for slf4j 2's fluent api key value pairs was added in logstash-logback-encoder 7.4