first commit

server/internal/logger/logger.go

@@ -0,0 +1,53 @@
+package logger
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"backupx/server/internal/config"
+	"github.com/natefinch/lumberjack"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+func New(cfg config.LogConfig) (*zap.Logger, error) {
+	level := parseLevel(cfg.Level)
+	encoderCfg := zap.NewProductionEncoderConfig()
+	encoderCfg.TimeKey = "time"
+	encoderCfg.EncodeTime = zapcore.ISO8601TimeEncoder
+	encoder := zapcore.NewJSONEncoder(encoderCfg)
+
+	writers := []zapcore.WriteSyncer{zapcore.AddSync(os.Stdout)}
+	if cfg.File != "" {
+		if err := os.MkdirAll(filepath.Dir(cfg.File), 0o755); err != nil {
+			return nil, fmt.Errorf("create log dir: %w", err)
+		}
+		rotator := &lumberjack.Logger{
+			Filename:   cfg.File,
+			MaxSize:    cfg.MaxSize,
+			MaxBackups: cfg.MaxBackups,
+			MaxAge:     cfg.MaxAge,
+			LocalTime:  false,
+			Compress:   true,
+		}
+		writers = append(writers, zapcore.AddSync(rotator))
+	}
+
+	core := zapcore.NewCore(encoder, zapcore.NewMultiWriteSyncer(writers...), level)
+	return zap.New(core, zap.AddCaller(), zap.AddStacktrace(zapcore.ErrorLevel)), nil
+}
+
+func parseLevel(value string) zapcore.Level {
+	switch strings.ToLower(strings.TrimSpace(value)) {
+	case "debug":
+		return zapcore.DebugLevel
+	case "warn":
+		return zapcore.WarnLevel
+	case "error":
+		return zapcore.ErrorLevel
+	default:
+		return zapcore.InfoLevel
+	}
+}