add ability to log to file, update to v2.28.1 and fix 'first upgrade' issue

internal/logging/log.go

@@ -1,6 +1,9 @@
 package logging
 
 import (
+	"io"
+	"os"
+
 	"github.com/sirupsen/logrus"
 )
 
@@ -10,3 +13,33 @@ func init() {
 	Log.SetLevel(logrus.InfoLevel)
 	Log.SetFormatter(&logrus.TextFormatter{})
 }
+
+func SetupLogging(verboseLevel int, logFilePath string) {
+	switch verboseLevel {
+	case 1:
+		Log.SetLevel(logrus.DebugLevel)
+	case 2:
+		Log.SetLevel(logrus.TraceLevel)
+	default:
+		if verboseLevel >= 3 {
+			Log.SetLevel(logrus.TraceLevel)
+		}
+	}
+
+	if logFilePath != "" {
+		logFile, err := os.OpenFile(logFilePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
+		if err != nil {
+			Log.Warnf("Failed to open log file %s: %v. Continuing without file logging.", logFilePath, err)
+			return
+		}
+
+		if verboseLevel > 0 {
+			multiWriter := io.MultiWriter(os.Stdout, logFile)
+			Log.SetOutput(multiWriter)
+			Log.Debugf("Verbose logging enabled with file output (level: %d)", verboseLevel)
+		} else {
+			Log.SetOutput(logFile)
+		}
+		Log.Infof("Logging to file: %s", logFilePath)
+	}
+}