tukki - Simple clojure first logging library with SLF4J compatibility

Experimental library for handling logging in Clojure first way.

Most Clojure logging libraries are wrappers to an exiting Java libraries. I was wondering what a Clojure first solution would look like.

This library is Clojure logging library with SLF4J API for compatibility with existing Java libraries.

The major differences to existing solutions are:

• Clojure friendly output out of the box
• Write log output to System/out leaving REPL (that uses *out*) clean
• The main logging API is done with macros that do not emit any code if the logging level is lower than configured level
• About 7x faster than logback

Clojure friendly output

The default appender function (you can make your own, it's just a function) aims for developer happiness. It has following defaults:

• Output is colored by log level, gray for debug, green for info, red for errors etc.
• Namespaces are truncated so that foo.bar.boz becomes f.b.boz
• Exceptions are printed with the root cause first
• Only the root cause stack trace is printed completely
• Stacktraces print clojure names as they are found in clojure files, so that function hello! is printed as hello!, instead if hello_BANG_