Vsphere: Add 15 missing err checks

pkg/cloudprovider/providers/vsphere/credentialmanager_test.go

@@ -204,7 +204,10 @@ func TestSecretCredentialManager_GetCredential(t *testing.T) {
 			t.Fatal("Failed to get all secrets from sharedInformer. error: ", err)
 		}
 		for _, secret := range secrets {
-			secretInformer.Informer().GetIndexer().Delete(secret)
+			err := secretInformer.Informer().GetIndexer().Delete(secret)
+			if err != nil {
+				t.Fatalf("Failed to delete secret from informer: %v", err)
+			}
 		}
 	}
 

pkg/cloudprovider/providers/vsphere/nodemanager.go

@@ -216,8 +216,7 @@ func (nm *NodeManager) DiscoverNode(node *v1.Node) error {
 
 func (nm *NodeManager) RegisterNode(node *v1.Node) error {
 	nm.addNode(node)
-	nm.DiscoverNode(node)
+	return nm.DiscoverNode(node)
-	return nil
 }
 
 func (nm *NodeManager) UnRegisterNode(node *v1.Node) error {

pkg/cloudprovider/providers/vsphere/vclib/connection_test.go

@@ -94,7 +94,7 @@ func TestWithValidCaCert(t *testing.T) {
 	}
 
 	// Ignoring error here, because we only care about the TLS connection
-	connection.NewClient(context.Background())
+	_, _ = connection.NewClient(context.Background())
 
 	verifyConnectionWasMade()
 }
@@ -151,7 +151,7 @@ func TestWithValidThumbprint(t *testing.T) {
 	}
 
 	// Ignoring error here, because we only care about the TLS connection
-	connection.NewClient(context.Background())
+	_, _ = connection.NewClient(context.Background())
 
 	verifyConnectionWasMade()
 }

pkg/cloudprovider/providers/vsphere/vclib/datacenter.go

@@ -85,6 +85,9 @@ func (dc *Datacenter) GetVMByUUID(ctx context.Context, vmUUID string) (*VirtualM
 // GetHostByVMUUID gets the host object from the given vmUUID
 func (dc *Datacenter) GetHostByVMUUID(ctx context.Context, vmUUID string) (*types.ManagedObjectReference, error) {
 	virtualMachine, err := dc.GetVMByUUID(ctx, vmUUID)
+	if err != nil {
+		return nil, err
+	}
 	var vmMo mo.VirtualMachine
 	pc := property.DefaultCollector(virtualMachine.Client())
 	err = pc.RetrieveOne(ctx, virtualMachine.Reference(), []string{"summary.runtime.host"}, &vmMo)

pkg/cloudprovider/providers/vsphere/vclib/virtualmachine.go

@@ -127,7 +127,10 @@ func (vm *VirtualMachine) AttachDisk(ctx context.Context, vmDiskPath string, vol
 		RecordvSphereMetric(APIAttachVolume, requestTime, err)
 		klog.Errorf("Failed to attach the disk with storagePolicy: %q on VM: %q. err - %+v", volumeOptions.StoragePolicyID, vm.InventoryPath, err)
 		if newSCSIController != nil {
-			vm.deleteController(ctx, newSCSIController, vmDevices)
+			nestedErr := vm.deleteController(ctx, newSCSIController, vmDevices)
+			if nestedErr != nil {
+				return "", fmt.Errorf("failed to delete SCSI Controller after reconfiguration failed with err=%v: %v", err, nestedErr)
+			}
 		}
 		return "", err
 	}
@@ -136,7 +139,10 @@ func (vm *VirtualMachine) AttachDisk(ctx context.Context, vmDiskPath string, vol
 	if err != nil {
 		klog.Errorf("Failed to attach the disk with storagePolicy: %+q on VM: %q. err - %+v", volumeOptions.StoragePolicyID, vm.InventoryPath, err)
 		if newSCSIController != nil {
-			vm.deleteController(ctx, newSCSIController, vmDevices)
+			nestedErr := vm.deleteController(ctx, newSCSIController, vmDevices)
+			if nestedErr != nil {
+				return "", fmt.Errorf("failed to delete SCSI Controller after waiting for reconfiguration failed with err='%v': %v", err, nestedErr)
+			}
 		}
 		return "", err
 	}
@@ -145,9 +151,15 @@ func (vm *VirtualMachine) AttachDisk(ctx context.Context, vmDiskPath string, vol
 	diskUUID, err := vm.Datacenter.GetVirtualDiskPage83Data(ctx, vmDiskPath)
 	if err != nil {
 		klog.Errorf("Error occurred while getting Disk Info from VM: %q. err: %v", vm.InventoryPath, err)
-		vm.DetachDisk(ctx, vmDiskPath)
+		nestedErr := vm.DetachDisk(ctx, vmDiskPath)
+		if nestedErr != nil {
+			return "", fmt.Errorf("failed to detach disk after getting VM UUID failed with err='%v': %v", err, nestedErr)
+		}
 		if newSCSIController != nil {
-			vm.deleteController(ctx, newSCSIController, vmDevices)
+			nestedErr = vm.deleteController(ctx, newSCSIController, vmDevices)
+			if nestedErr != nil {
+				return "", fmt.Errorf("failed to delete SCSI Controller after getting VM UUID failed with err='%v': %v", err, nestedErr)
+			}
 		}
 		return "", err
 	}
@@ -271,7 +283,9 @@ func (vm *VirtualMachine) CreateDiskSpec(ctx context.Context, diskPath string, d
 		if scsiController == nil {
 			klog.Errorf("Cannot find SCSI controller of type: %q in VM", volumeOptions.SCSIControllerType)
 			// attempt clean up of scsi controller
-			vm.deleteController(ctx, newSCSIController, vmDevices)
+			if err := vm.deleteController(ctx, newSCSIController, vmDevices); err != nil {
+				return nil, nil, fmt.Errorf("failed to delete SCSI controller after failing to find it on VM: %v", err)
+			}
 			return nil, nil, fmt.Errorf("Cannot find SCSI controller of type: %q in VM", volumeOptions.SCSIControllerType)
 		}
 	}
@@ -351,7 +365,10 @@ func (vm *VirtualMachine) createAndAttachSCSIController(ctx context.Context, dis
 	if err != nil {
 		klog.V(LogLevel).Infof("Cannot add SCSI controller to VM: %q. err: %+v", vm.InventoryPath, err)
 		// attempt clean up of scsi controller
-		vm.deleteController(ctx, newSCSIController, vmDevices)
+		nestedErr := vm.deleteController(ctx, newSCSIController, vmDevices)
+		if nestedErr != nil {
+			return nil, fmt.Errorf("failed to delete SCSI controller after failing to add it to vm with err='%v': %v", err, nestedErr)
+		}
 		return nil, err
 	}
 	return newSCSIController, nil

pkg/cloudprovider/providers/vsphere/vsphere.go

@@ -1288,7 +1288,9 @@ func (vs *VSphere) NodeAdded(obj interface{}) {
 	}
 
 	klog.V(4).Infof("Node added: %+v", node)
-	vs.nodeManager.RegisterNode(node)
+	if err := vs.nodeManager.RegisterNode(node); err != nil {
+		klog.Errorf("failed to add node %+v: %v", node, err)
+	}
 }
 
 // Notification handler when node is removed from k8s cluster.
@@ -1300,7 +1302,9 @@ func (vs *VSphere) NodeDeleted(obj interface{}) {
 	}
 
 	klog.V(4).Infof("Node deleted: %+v", node)
-	vs.nodeManager.UnRegisterNode(node)
+	if err := vs.nodeManager.UnRegisterNode(node); err != nil {
+		klog.Errorf("failed to delete node %s: %v", node.Name, err)
+	}
 }
 
 func (vs *VSphere) NodeManager() (nodeManager *NodeManager) {
@@ -1316,7 +1320,11 @@ func withTagsClient(ctx context.Context, connection *vclib.VSphereConnection, f
 	if err := c.Login(ctx, user); err != nil {
 		return err
 	}
-	defer c.Logout(ctx)
+	defer func() {
+		if err := c.Logout(ctx); err != nil {
+			klog.Errorf("failed to logout: %v", err)
+		}
+	}()
 	return f(c)
 }
 

pkg/cloudprovider/providers/vsphere/vsphere_util.go

@@ -72,7 +72,12 @@ func getVSphereConfig() (*VSphereConfig, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer confFile.Close()
+	defer func() {
+		if err := confFile.Close(); err != nil {
+			klog.Errorf("failed to close config file: %v", err)
+		}
+	}()
+
 	cfg, err := readConfig(confFile)
 	if err != nil {
 		return nil, err