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lazygit
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pkg/logs/logs.go
64 строки
2 KB
Jesse Duffield
Allow global logging when developing
25 май 2023, 11:31
25 май 2023, 11:31
e0ecc9e
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package logs import ( "io" "log" "os" "github.com/sirupsen/logrus" ) // It's important that this package does not depend on any other package because we // may want to import it from anywhere, and we don't want to create a circular dependency // (because Go refuses to compile circular dependencies). // Global is a global logger that can be used anywhere in the app, for // _development purposes only_. I want to avoid global variables when possible, // so if you want to log something that's printed when the -debug flag is set, // you'll need to ensure the struct you're working with has a logger field ( // and most of them do). // Global is only available if the LAZYGIT_LOG_PATH environment variable is set. var Global *logrus.Entry func init() { logPath := os.Getenv("LAZYGIT_LOG_PATH") if logPath != "" { Global = NewDevelopmentLogger(logPath) } } func NewProductionLogger() *logrus.Entry { logger := logrus.New() logger.Out = io.Discard logger.SetLevel(logrus.ErrorLevel) return formatted(logger) } func NewDevelopmentLogger(logPath string) *logrus.Entry { logger := logrus.New() logger.SetLevel(getLogLevel()) file, err := os.OpenFile(logPath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o666) if err != nil { log.Fatalf("Unable to log to log file: %v", err) } logger.SetOutput(file) return formatted(logger) } func formatted(log *logrus.Logger) *logrus.Entry { // highly recommended: tail -f development.log | humanlog // https://github.com/aybabtme/humanlog log.Formatter = &logrus.JSONFormatter{} return log.WithFields(logrus.Fields{}) } func getLogLevel() logrus.Level { strLevel := os.Getenv("LOG_LEVEL") level, err := logrus.ParseLevel(strLevel) if err != nil { return logrus.DebugLevel } return level }