denismitr / glog

Convenient Logger interface and std logger wrapper

Convenient logger interface and wrapper around std logger

Interface

type Logger interface {
	Error(err error)
	Debugf(format string, args ...interface{})
	Noticef(format string, args ...interface{})
}

Usage with std logger

Ideal to use with Kubernates where you usually write logs to stdout and stderr. method Error will write to stderr and methods Debugf and Noticef will write to stdout. Debugf writes only in glog.Dev environment and Error and Noticef both in glog.Dev and glog.Prod.

lg := glog.NewStdoutLogger(glog.Dev, "my-service")

lg.Error(errors.New("some error"))
lg.Debugf("Something to debug %s", "foo")
lg.Noticef("Something to debug %s", "foo")

Null logger

lg := glog.NullLogger{}

// nothing will be written
lg.Error(errors.New("some error"))
lg.Debugf("Something to debug %s", "foo")
lg.Noticef("Something to debug %s", "foo")