Log different levels to different files like in "glog"

[sourabhxyz]

Like glog logs to three different files, viz., name.INFO, name.WARNING, name.ERROR (where INFO also contains logs of higher priority (Warn and Error) as well, similarly for .WARNING and .ERROR), is it possible to do the same with zap? I now I can achieve the same behaviour by running three different loggers each set with their own atomic level but just asking if there is some straight forward way.

[prashantv]

You can implement a custom zapcore.Core that will multiplex writes to different log levels to different files. A "core" is a backend, and can represent a single file.

As an example, you may want to look at zapcore.NewTee which will log everything to multiple cores. Instead of duplicating the write to all cores, you should check the level of the entry, and determine the appropriate core to write to.

This is not something we plan to provide in zap.