package logrus_test import ( "os" "path" "runtime" "strings" "github.com/sirupsen/logrus" ) func ExampleJSONFormatter_CallerPrettyfier() { l := logrus.New() l.SetReportCaller(true) l.Out = os.Stdout l.Formatter = &logrus.JSONFormatter{ DisableTimestamp: true, CallerPrettyfier: func(f *runtime.Frame) (string, string) { s := strings.Split(f.Function, ".") funcname := s[len(s)-1] _, filename := path.Split(f.File) return funcname, filename }, } l.Info("example of custom format caller") // Output: // {"file":"example_custom_caller_test.go","func":"ExampleCustomFormatter","level":"info","msg":"example of custom format caller"} }