Where is RegexFilter?

[dwhitejazz]

I'm trying to add a RegexFilter to my logback.xml to use with ZooKeeper server logging. However, it appears that ch.qos.logback.core.filter.RegexFilter does not exist in any version of logback core or the GitHub source.

I tried using the RegexFilter from log4j (org.apache.logging.log4j.core.filter.RegexFilter) but this does not work when added as a filter class to logback.xml. An Interpreter class complains that it cannot find path configurations for attributes "onMatch", "onMismatch", and "regex" even though I have defined them.

Therefore, why is RegexFilter missing? Can I use the log4j class instead and if so how do I configure it in logback.xml? If I need to write my own RegexFilter please advise me on the steps (i.e. what class to inherit, methods to implement, etc.)

Thank you.

[ceki]

While log4j 1.x and logback are very similar, log4j 2.x and logback are less so.

However, this means that you cannot take a log4j 2.x and copy-and-paste it into logback.

It should not be too hard to extend ch.qos.logback.core.filter.Filter to implement a RegEx filter. Logback uses a rather simple convention-based mechanism to define parameters for components such as Filters.