fix: golint errors

Signed-off-by: Derek Su <derek.su@suse.com>

app/daemon.go

@@ -279,7 +279,7 @@ func startManager(c *cli.Context) error {
 		debugHandler := http.DefaultServeMux
 		logger.Infof("Debug Server listening on %s", debugAddress)
 		if err := http.ListenAndServe(debugAddress, debugHandler); err != nil && !errors.Is(err, http.ErrServerClosed) {
-			logger.Errorf(fmt.Sprintf("ListenAndServe: %s", err))
+			logger.WithError(err).Error("Failed to start debug server")
 		}
 	}()
 

app/get_proc_arg.go

@@ -218,7 +218,7 @@ func getPodLogAsString(kubeClient *clientset.Clientset, namespace, name string)
 		return "", nil
 	} else if !strings.HasPrefix(strLogs[0], "Proc found") {
 		// unexpected result
-		return "", fmt.Errorf(string(logs))
+		return "", fmt.Errorf("%s", string(logs))
 	}
 	logrus.Info(strLogs[0])
 	return strLogs[1], nil

controller/engine_controller.go

@@ -2092,7 +2092,7 @@ func (ec *EngineController) waitForV2EngineRebuild(e *longhorn.Engine, replicaNa
 				continue
 			}
 			if rebuildingStatus.State == engineapi.ProcessStateError || rebuildingStatus.Error != "" {
-				return fmt.Errorf(rebuildingStatus.Error)
+				return errors.New(rebuildingStatus.Error)
 			}
 			if rebuildingStatus.State == engineapi.ProcessStateComplete {
 				return nil

controller/kubernetes_pod_controller.go

@@ -669,7 +669,7 @@ func isCSIPluginPod(obj interface{}) bool {
 		}
 	}
 
-	if pod.OwnerReferences != nil && len(pod.OwnerReferences) > 0 {
+	if len(pod.OwnerReferences) > 0 {
 		for _, ownerRef := range pod.OwnerReferences {
 			if ownerRef.Kind != types.KubernetesKindDaemonSet {
 				continue

controller/monitor/snapshot_monitor.go

@@ -463,7 +463,7 @@ func (m *SnapshotMonitor) syncHashStatusFromEngineReplicas(engine *longhorn.Engi
 		}
 
 		if status.State == string(engineapi.ProcessStateInProgress) {
-			return fmt.Errorf(string(engineapi.ProcessStateInProgress))
+			return errors.New(string(engineapi.ProcessStateInProgress))
 		}
 	}
 

controller/node_controller.go

@@ -1728,7 +1728,7 @@ func (nc *NodeController) syncBackingImageEvictionRequested(node *longhorn.Node)
 			logMessage = "Requesting backing image copy eviction"
 		}
 
-		backingImageLog.Infof(logMessage)
+		backingImageLog.Infof("%s", logMessage)
 		if _, err := nc.ds.UpdateBackingImage(backingImageToSync.BackingImage); err != nil {
 			backingImageLog.Warnf("Failed to %s, will enqueue then resync the node", strings.ToLower(logMessage))
 			nc.enqueueNodeRateLimited(node)

controller/system_backup_controller.go

@@ -814,7 +814,7 @@ func (c *SystemBackupController) WaitForVolumeBackupToComplete(backups map[strin
 			case longhorn.BackupStateCompleted:
 				delete(backups, name)
 			case longhorn.BackupStateError:
-				return errors.Wrapf(fmt.Errorf(backup.Status.Error), "failed creating Volume backup %v", name)
+				return errors.Wrapf(fmt.Errorf("%s", backup.Status.Error), "failed creating Volume backup %v", name)
 			}
 		}
 
@@ -926,7 +926,7 @@ func (c *SystemBackupController) WaitForBackingImageBackupToComplete(backupBacki
 			case longhorn.BackupStateCompleted:
 				delete(backupBackingImages, name)
 			case longhorn.BackupStateError:
-				log.Warnf(errors.Wrapf(fmt.Errorf(backupBackingImage.Status.Error), "Failed to create BackingImage backup %v", name).Error())
+				log.Warnf("Failed to create BackingImage backup %v: %v", name, backupBackingImage.Status.Error)
 				return
 			}
 		}

controller/system_restore_controller_test.go

@@ -947,7 +947,7 @@ type FakeSystemBackupTargetClient struct {
 func (c *FakeSystemBackupTargetClient) UploadSystemBackup(name, localFile, longhornVersion, longhornGitCommit, managerImage, engineImage string) (string, error) {
 	switch name {
 	case TestSystemBackupNameUploadFailed, TestSystemRestoreNameUploadFailed:
-		return "", fmt.Errorf(name)
+		return "", fmt.Errorf("%v", name)
 	case TestSystemBackupNameUploadExceedTimeout, TestSystemRestoreNameUploadExceedTimeout:
 		time.Sleep(datastore.SystemBackupTimeout * 2)
 	}

controller/system_rollout_controller.go

@@ -346,7 +346,7 @@ func (c *SystemRolloutController) recordErrorState(record *systemRolloutRecord,
 		fmt.Sprintf("%v: %v", record.message, err),
 	)
 
-	log.WithError(fmt.Errorf(err)).Error(record.message)
+	log.WithError(fmt.Errorf("%v", err)).Error(record.message)
 	c.eventRecorder.Event(systemRestore, corev1.EventTypeWarning, constant.EventReasonFailed, util.CapitalizeFirstLetter(record.message))
 
 	c.cacheErrors.Reset()

csi/controller_server.go

@@ -158,7 +158,7 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
 				// check size of source and requested
 				srcVolSizeBytes, err := strconv.ParseInt(longhornSrcVol.Size, 10, 64)
 				if err != nil {
-					return nil, status.Errorf(codes.Internal, err.Error())
+					return nil, status.Errorf(codes.Internal, "%v", err)
 				}
 				if reqVolSizeBytes != srcVolSizeBytes {
 					return nil, status.Errorf(codes.OutOfRange, "failed to clone volume: the requested size (%v bytes) is different than the source volume size (%v bytes)", reqVolSizeBytes, srcVolSizeBytes)
@@ -1082,7 +1082,7 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
 
 	existVol, err := cs.apiClient.Volume.ById(volumeID)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, err.Error())
+		return nil, status.Errorf(codes.Internal, "%v", err)
 	}
 	if existVol == nil {
 		return nil, status.Errorf(codes.NotFound, "volume %s missing", volumeID)
@@ -1095,7 +1095,7 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
 	}
 	existingSize, err := strconv.ParseInt(existVol.Size, 10, 64)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, err.Error())
+		return nil, status.Errorf(codes.Internal, "%v", err)
 	}
 
 	isOnlineExpansion := existVol.State == string(longhorn.VolumeStateAttached)
@@ -1106,9 +1106,9 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
 		// TODO: This manual error code parsing should be refactored once Longhorn API implements error code response
 		// https://github.com/longhorn/longhorn/issues/1875
 		if matched, _ := regexp.MatchString("failed to schedule .* more bytes to disk", err.Error()); matched {
-			return nil, status.Errorf(codes.OutOfRange, err.Error())
+			return nil, status.Errorf(codes.OutOfRange, "%v", err)
 		}
-		return nil, status.Errorf(codes.Internal, err.Error())
+		return nil, status.Errorf(codes.Internal, "%v", err)
 	}
 
 	// kubernetes doesn't support volume shrinking and the csi spec specifies to return true
@@ -1135,7 +1135,7 @@ func (cs *ControllerServer) ControllerExpandVolume(ctx context.Context, req *csi
 
 	volumeSize, err := strconv.ParseInt(existVol.Size, 10, 64)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, err.Error())
+		return nil, status.Errorf(codes.Internal, "%v", err)
 	}
 
 	if !isOnlineExpansion {

csi/node_server.go

@@ -182,7 +182,7 @@ func (ns *NodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
 		_, err := os.Stat(devicePath)
 		if err != nil {
 			if !os.IsNotExist(err) {
-				return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to stat device %s", devicePath).Error())
+				return nil, status.Errorf(codes.Internal, "failed to stat device %s: %v", devicePath, err)
 			}
 		}
 
@@ -234,15 +234,15 @@ func (ns *NodeServer) nodeStageSharedVolume(volumeID, shareEndpoint, targetPath
 
 	isMnt, err := ensureMountPoint(targetPath, mounter)
 	if err != nil {
-		return status.Errorf(codes.Internal, errors.Wrapf(err, "failed to prepare mount point for shared volume %v", volumeID).Error())
+		return status.Errorf(codes.Internal, "failed to prepare mount point for shared volume %v: %v", volumeID, err)
 	}
 	if isMnt {
 		return nil
 	}
 
 	uri, err := url.Parse(shareEndpoint)
 	if err != nil {
-		return status.Errorf(codes.InvalidArgument, errors.Wrapf(err, "invalid share endpoint %v for volume %v", shareEndpoint, volumeID).Error())
+		return status.Errorf(codes.InvalidArgument, "invalid share endpoint %v for volume %v: %v", shareEndpoint, volumeID, err)
 	}
 
 	// share endpoint is of the form nfs://server/export
@@ -302,7 +302,7 @@ func (ns *NodeServer) nodeStageMountVolume(volumeID, devicePath, stagingTargetPa
 
 	isMnt, err := ensureMountPoint(stagingTargetPath, mounter)
 	if err != nil {
-		return status.Errorf(codes.Internal, errors.Wrapf(err, "failed to prepare mount point %v for volume %v", stagingTargetPath, volumeID).Error())
+		return status.Errorf(codes.Internal, "failed to prepare mount point %v for volume %v: %v", stagingTargetPath, volumeID, err)
 	}
 	if isMnt {
 		return nil
@@ -327,20 +327,20 @@ func (ns *NodeServer) nodePublishBlockVolume(volumeID, devicePath, targetPath st
 
 	// we ensure the parent directory exists and is valid
 	if _, err := ensureDirectory(filepath.Dir(targetPath)); err != nil {
-		return status.Errorf(codes.Internal, errors.Wrapf(err, "failed to prepare mount point for block device %v", devicePath).Error())
+		return status.Errorf(codes.Internal, "failed to prepare mount point for block device %v: %v", devicePath, err)
 	}
 
 	// create file where we can bind mount the device to
 	if err := makeFile(targetPath); err != nil {
-		return status.Errorf(codes.Internal, errors.Wrapf(err, "failed to create file %v", targetPath).Error())
+		return status.Errorf(codes.Internal, "failed to create file %v: %v", targetPath, err)
 	}
 
 	log.Infof("Bind mounting device %v at %v", devicePath, targetPath)
 	if err := mounter.Mount(devicePath, targetPath, "", []string{"bind"}); err != nil {
 		if removeErr := os.Remove(targetPath); removeErr != nil {
-			return status.Errorf(codes.Internal, errors.Wrapf(removeErr, "failed to remove mount target %q", targetPath).Error())
+			return status.Errorf(codes.Internal, "failed to remove mount target %q: %v", targetPath, removeErr)
 		}
-		return status.Errorf(codes.Internal, errors.Wrapf(err, "failed to bind mount %q at %q", devicePath, targetPath).Error())
+		return status.Errorf(codes.Internal, "failed to bind mount %q at %q: %v", devicePath, targetPath, err)
 	}
 	return nil
 }
@@ -361,7 +361,7 @@ func (ns *NodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
 	}
 
 	if err := unmountAndCleanupMountPoint(targetPath, mount.New("")); err != nil {
-		return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to cleanup volume %s mount point %v", volumeID, targetPath).Error())
+		return nil, status.Errorf(codes.Internal, "failed to cleanup volume %s mount point %v: %v", volumeID, targetPath, err)
 	}
 
 	log.Infof("Volume %s unmounted from path %s", volumeID, targetPath)
@@ -454,7 +454,7 @@ func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVol
 	devicePath := volume.Controllers[0].Endpoint
 	diskFormat, err := getDiskFormat(devicePath)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to evaluate device filesystem %v format", devicePath).Error())
+		return nil, status.Errorf(codes.Internal, "failed to evaluate device filesystem %v format: %v", devicePath, err)
 	}
 
 	log.Infof("Volume %v device %v contains filesystem of format %v", volumeID, devicePath, diskFormat)
@@ -644,13 +644,13 @@ func (ns *NodeServer) NodeGetVolumeStats(ctx context.Context, req *csi.NodeGetVo
 		if errors.Is(err, unix.ENOENT) {
 			return nil, status.Errorf(codes.NotFound, "volume %v is not mounted on path %v", volumeID, volumePath)
 		}
-		return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to check volume mode for volume path %v", volumePath).Error())
+		return nil, status.Errorf(codes.Internal, "failed to check volume mode for volume path %v: %v", volumePath, err)
 	}
 
 	if isBlockVolume {
 		volCapacity, err := strconv.ParseInt(existVol.Size, 10, 64)
 		if err != nil {
-			return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to convert volume size %v for volume %v", existVol.Size, volumeID).Error())
+			return nil, status.Errorf(codes.Internal, "failed to convert volume size %v for volume %v: %v", existVol.Size, volumeID, err)
 		}
 		return &csi.NodeGetVolumeStatsResponse{
 			Usage: []*csi.VolumeUsage{
@@ -669,7 +669,7 @@ func (ns *NodeServer) NodeGetVolumeStats(ctx context.Context, req *csi.NodeGetVo
 		if errors.Is(err, unix.ENOENT) {
 			return nil, status.Errorf(codes.NotFound, "volume %v is not mounted on path %v", volumeID, volumePath)
 		}
-		return nil, status.Errorf(codes.Internal, errors.Wrapf(err, "failed to retrieve capacity statistics for volume path %v for volume %v", volumePath, volumeID).Error())
+		return nil, status.Errorf(codes.Internal, "failed to retrieve capacity statistics for volume path %v for volume %v: %v", volumePath, volumeID, err)
 	}
 
 	return &csi.NodeGetVolumeStatsResponse{
@@ -718,7 +718,7 @@ func (ns *NodeServer) NodeExpandVolume(ctx context.Context, req *csi.NodeExpandV
 
 	volume, err := ns.apiClient.Volume.ById(volumeID)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, err.Error())
+		return nil, status.Errorf(codes.Internal, "%v", err)
 	}
 	if volume == nil {
 		return nil, status.Errorf(codes.NotFound, "volume %s missing", volumeID)
@@ -768,7 +768,7 @@ func (ns *NodeServer) NodeExpandVolume(ctx context.Context, req *csi.NodeExpandV
 
 		// blindly resize the encrypto device
 		if err := crypto.ResizeEncryptoDevice(volumeID, passphrase); err != nil {
-			return "", status.Errorf(codes.InvalidArgument, errors.Wrapf(err, "failed to resize crypto device %v for volume %v node expansion", devicePath, volumeID).Error())
+			return "", status.Errorf(codes.InvalidArgument, "failed to resize crypto device %v for volume %v node expansion: %v", devicePath, volumeID, err)
 		}
 
 		return devicePath, nil

engineapi/backups.go

@@ -475,5 +475,5 @@ func (e *EngineBinary) BackupRestoreStatus(*longhorn.Engine) (map[string]*longho
 // CleanupBackupMountPoints calls engine binary
 // TODO: Deprecated, replaced by gRPC proxy, just to match the interface
 func (e *EngineBinary) CleanupBackupMountPoints() error {
-	return fmt.Errorf(ErrNotImplement)
+	return errors.New(ErrNotImplement)
 }

engineapi/engine.go

@@ -353,11 +353,11 @@ func (e *EngineBinary) ReplicaModeUpdate(engine *longhorn.Engine, url, mode stri
 }
 
 func (e *EngineBinary) MetricsGet(*longhorn.Engine) (*Metrics, error) {
-	return nil, fmt.Errorf(ErrNotImplement)
+	return nil, errors.New(ErrNotImplement)
 }
 
 func (e *EngineBinary) RemountReadOnlyVolume(*longhorn.Engine) error {
-	return fmt.Errorf(ErrNotImplement)
+	return errors.New(ErrNotImplement)
 }
 
 // addFlags always adds required flags to args. In addition, if the engine version is high enough, it adds additional