new config options and error handles new input any

logging/cgf.go

@@ -0,0 +1,19 @@
+package logging
+
+type Config struct {
+	MaxSize     int // max. size of file in MB
+	MaxBackup   int //
+	MaxAge      int
+	Debug       bool
+	TerminalOut bool
+}
+
+func DefaultConfig() *Config {
+	return &Config{
+		Debug:       false,
+		TerminalOut: false,
+		MaxSize:     1,
+		MaxBackup:   3,
+		MaxAge:      28,
+	}
+}

logging/logging.go

@@ -7,6 +7,7 @@ import (
 
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
+	"gopkg.in/natefinch/lumberjack.v2"
 )
 
 type Level zapcore.Level
@@ -24,14 +25,14 @@ type Logger struct {
 	debugging bool
 }
 
-func NewLogger(name string, debug bool) (*Logger, error) {
+func NewLogger(file string, cfg *Config) (*Logger, error) {
 
-	if name == "" {
-		name = "NewLogger"
+	if cfg == nil {
+		cfg = DefaultConfig()
 	}
-	file, err := os.OpenFile(fmt.Sprintf("%s.log", name), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
-	if err != nil {
-		return nil, err
+
+	if file == "" {
+		file = "NewLogger.log"
 	}
 
 	encoderConfig := zap.NewProductionEncoderConfig()
@@ -41,13 +42,42 @@ func NewLogger(name string, debug bool) (*Logger, error) {
 	}
 	encoder := zapcore.NewJSONEncoder(encoderConfig)
 
+	fileSyncer := zapcore.AddSync(&lumberjack.Logger{
+		Filename:   file,
+		MaxSize:    1, // megabytes
+		MaxBackups: 3,
+		MaxAge:     28, // days
+	})
+
+	// Create core list
+	var cores []zapcore.Core
+
+	// File core (always added)
+	cores = append(cores, zapcore.NewCore(encoder, fileSyncer, zapcore.InfoLevel))
+
+	// Optional stdout core
+	if cfg.TerminalOut {
+		stdoutSyncer := zapcore.AddSync(zapcore.Lock(os.Stdout))
+		cores = append(cores, zapcore.NewCore(encoder, stdoutSyncer, zapcore.InfoLevel))
+	}
+
+	combinedCore := zapcore.NewTee(cores...)
+
+	// If debugging, add a separate debug core (to both file and stdout if requested)
+	var debugCores []zapcore.Core
+	debugCores = append(debugCores, zapcore.NewCore(encoder, fileSyncer, zapcore.DebugLevel))
+	if cfg.TerminalOut {
+		stdoutSyncer := zapcore.AddSync(zapcore.Lock(os.Stdout))
+		debugCores = append(debugCores, zapcore.NewCore(encoder, stdoutSyncer, zapcore.DebugLevel))
+	}
+	debugCore := zapcore.NewTee(debugCores...)
+
 	// Build the logger
 	return &Logger{
-			log:       zap.New(zapcore.NewCore(encoder, zapcore.AddSync(file), zapcore.InfoLevel)),
-			debug:     zap.New(zapcore.NewCore(encoder, zapcore.AddSync(file), zapcore.DebugLevel)),
-			debugging: debug,
-		},
-		nil
+		log:       zap.New(combinedCore),
+		debug:     zap.New(debugCore),
+		debugging: cfg.Debug,
+	}, nil
 }
 
 func (l *Logger) Info(caller, msg string) {
@@ -58,8 +88,8 @@ func (l *Logger) Warning(caller, msg string) {
 	l.log.Warn(msg, zap.String("caller", caller))
 }
 
-func (l *Logger) Error(caller, msg string) {
-	l.log.Error(msg, zap.String("caller", caller))
+func (l *Logger) Error(caller string, msg any) {
+	l.log.Error(fmt.Sprint(msg), zap.String("caller", caller))
 }
 
 func (l *Logger) Debug(caller, msg string) {