Moving to scaleset client for the controller (#4390)

logger/logger.go

@@ -0,0 +1,40 @@
+package logger
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+	"strings"
+)
+
+// New creates new slog.Logger based on the format
+func New(logLevel string, logFormat string) (*slog.Logger, error) {
+	var lvl slog.Level
+	switch strings.ToLower(logLevel) {
+	case "debug":
+		lvl = slog.LevelDebug
+	case "info":
+		lvl = slog.LevelInfo
+	case "warn":
+		lvl = slog.LevelWarn
+	case "error":
+		lvl = slog.LevelError
+	default:
+		return nil, fmt.Errorf("invalid log level: %s", logLevel)
+	}
+
+	switch logFormat {
+	case "json":
+		return slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+			AddSource: true,
+			Level:     lvl,
+		})), nil
+	case "text":
+		return slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+			AddSource: true,
+			Level:     lvl,
+		})), nil
+	default:
+		return nil, fmt.Errorf("invalid log format: %s", logFormat)
+	}
+}