Ability to Configure Custom Logback Encoder/Layout

I would like the ability to log output in JSON to help with ingesting them into an ELK setup. This can be accomplished by adding a custom Encoder or Layout on the appender. The current way of configuring appenders doesn’t expose this and so it must be done manually at run-time.

I don’t have a strong opinion but I feel like either layout or encoder would be fine, and that we shouldn’t use both. I see that there is already a layout being passed into AppenderFactory.build which may create some issues.

Ideally, we could just pass in a class name with a no-arg constructor as a string parameters in the appenders config section.

Would a PR that added this feature be welcome?

[ajmath]

For the curious, here is what I ended up doing to make this work.

https://gist.github.com/ajmath/e9f90c29cd224653c218

My only gripe is having to add the file META-INF/services file that contains my class name. Is there a way to have this done automatically via reflection?

[joschi]

Closed via #2232