package log import ( "os" "go.uber.org/zap" "go.uber.org/zap/zapcore" ) var Msg *zap.Logger func init() { var err error // Create a custom configuration with a human-readable "Console" encoder config := zap.NewDevelopmentConfig() config.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder // Adds color to log levels // Determine the log level based on the runtime mode mode := os.Getenv("RUNTIME_MODE") logLevel := zapcore.DebugLevel if mode == "production" { logLevel = zapcore.InfoLevel } // Set the log level config.Level = zap.NewAtomicLevelAt(logLevel) Msg, err = config.Build() // Potential source of the error if err != nil { panic("Failed to initialize logger" + err.Error()) } // Log the selected log level (optional, can be helpful for debugging) Msg.Info("", zap.String("Log level", logLevel.String())) }