init

xiangj-adapter/internal/logger/logger.go

@@ -0,0 +1,44 @@
+package logger
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+type Options struct {
+	Level    string
+	Output   string
+	FilePath string
+}
+
+func New(opts Options) (*slog.Logger, error) {
+	var lvl slog.Level
+	if err := lvl.UnmarshalText([]byte(opts.Level)); err != nil {
+		lvl = slog.LevelInfo
+	}
+
+	output := strings.ToLower(strings.TrimSpace(opts.Output))
+	switch output {
+	case "", "console":
+		handler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: lvl})
+		return slog.New(handler), nil
+	case "file":
+		if strings.TrimSpace(opts.FilePath) == "" {
+			return nil, fmt.Errorf("log file path is required")
+		}
+		if err := os.MkdirAll(filepath.Dir(opts.FilePath), 0o755); err != nil {
+			return nil, fmt.Errorf("create log directory: %w", err)
+		}
+		file, err := os.OpenFile(opts.FilePath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o644)
+		if err != nil {
+			return nil, fmt.Errorf("open log file: %w", err)
+		}
+		handler := slog.NewTextHandler(file, &slog.HandlerOptions{Level: lvl})
+		return slog.New(handler), nil
+	default:
+		return nil, fmt.Errorf("unsupported log output: %s", opts.Output)
+	}
+}