Wrap nested errors

pkg/nfd-master/nfd-master.go

@@ -251,7 +251,7 @@ func (m *nfdMaster) Run() error {
 	if !m.config.NoPublish {
 		err := m.updateMasterNode()
 		if err != nil {
-			return fmt.Errorf("failed to update master node: %v", err)
+			return fmt.Errorf("failed to update master node: %w", err)
 		}
 	}
 
@@ -368,7 +368,7 @@ func (m *nfdMaster) runGrpcServer(errChan chan<- error) {
 	// Create server listening for TCP connections
 	lis, err := net.Listen("tcp", fmt.Sprintf(":%d", m.args.Port))
 	if err != nil {
-		errChan <- fmt.Errorf("failed to listen: %v", err)
+		errChan <- fmt.Errorf("failed to listen: %w", err)
 		return
 	}
 
@@ -414,7 +414,7 @@ func (m *nfdMaster) runGrpcServer(errChan chan<- error) {
 
 		case err := <-grpcErr:
 			if err != nil {
-				errChan <- fmt.Errorf("gRPC server exited with an error: %v", err)
+				errChan <- fmt.Errorf("gRPC server exited with an error: %w", err)
 			}
 			klog.InfoS("gRPC server stopped")
 		}
@@ -552,7 +552,7 @@ func (m *nfdMaster) updateMasterNode() error {
 		"/metadata/annotations")
 	err = m.apihelper.PatchNode(cli, node.Name, p)
 	if err != nil {
-		return fmt.Errorf("failed to patch node annotations: %v", err)
+		return fmt.Errorf("failed to patch node annotations: %w", err)
 	}
 
 	return nil
@@ -951,7 +951,7 @@ func (m *nfdMaster) setTaints(cli *kubernetes.Clientset, taints []corev1.Taint,
 	if len(patches) > 0 {
 		err = m.apihelper.PatchNode(cli, node.Name, patches)
 		if err != nil {
-			return fmt.Errorf("error while patching node object: %v", err)
+			return fmt.Errorf("error while patching node object: %w", err)
 		}
 		klog.V(1).InfoS("patched node annotations for taints", "nodeName", nodeName)
 	}
@@ -1112,13 +1112,13 @@ func (m *nfdMaster) updateNodeObject(cli *kubernetes.Clientset, nodeName string,
 	statusPatches := m.createExtendedResourcePatches(node, extendedResources)
 	err = m.apihelper.PatchNodeStatus(cli, node.Name, statusPatches)
 	if err != nil {
-		return fmt.Errorf("error while patching extended resources: %v", err)
+		return fmt.Errorf("error while patching extended resources: %w", err)
 	}
 
 	// Patch the node object in the apiserver
 	err = m.apihelper.PatchNode(cli, node.Name, patches)
 	if err != nil {
-		return fmt.Errorf("error while patching node object: %v", err)
+		return fmt.Errorf("error while patching node object: %w", err)
 	}
 
 	if len(patches) > 0 || len(statusPatches) > 0 {
@@ -1235,7 +1235,7 @@ func (m *nfdMaster) configure(filepath string, overrides string) error {
 
 	// Parse config overrides
 	if err := yaml.Unmarshal([]byte(overrides), c); err != nil {
-		return fmt.Errorf("failed to parse -options: %s", err)
+		return fmt.Errorf("failed to parse -options: %w", err)
 	}
 	if m.args.Overrides.NoPublish != nil {
 		c.NoPublish = *m.args.Overrides.NoPublish

pkg/resourcemonitor/podresourcesscanner.go

@@ -153,7 +153,7 @@ func (resMon *PodResourcesScanner) Scan() (ScanResponse, error) {
 		hasDevice := hasDevice(podResource)
 		isWatchable, isIntegralGuaranteed, err := resMon.isWatchable(podResource.GetNamespace(), podResource.GetName(), hasDevice)
 		if err != nil {
-			return ScanResponse{}, fmt.Errorf("checking if pod in a namespace is watchable, namespace:%v, pod name %v: %v", podResource.GetNamespace(), podResource.GetName(), err)
+			return ScanResponse{}, fmt.Errorf("checking if pod in a namespace is watchable, namespace:%v, pod name %v: %w", podResource.GetNamespace(), podResource.GetName(), err)
 		}
 		if !isWatchable {
 			continue

pkg/utils/fswatcher.go

@@ -67,7 +67,7 @@ func (w *FsWatcher) reset(names ...string) error {
 func (w *FsWatcher) initWatcher() error {
 	if w.Watcher != nil {
 		if err := w.Watcher.Close(); err != nil {
-			return fmt.Errorf("failed to close fsnotify watcher: %v", err)
+			return fmt.Errorf("failed to close fsnotify watcher: %w", err)
 		}
 	}
 	w.paths = make(map[string]struct{})
@@ -75,7 +75,7 @@ func (w *FsWatcher) initWatcher() error {
 	watcher, err := fsnotify.NewWatcher()
 	if err != nil {
 		w.Watcher = nil
-		return fmt.Errorf("failed to create fsnotify watcher: %v", err)
+		return fmt.Errorf("failed to create fsnotify watcher: %w", err)
 	}
 	w.Watcher = watcher
 

pkg/utils/klog/klog.go

@@ -52,7 +52,7 @@ func MergeKlogConfiguration(klogArgs map[string]*utils.KlogFlagVal, klogConfig K
 				v = a.DefValue()
 			}
 			if err := a.SetFromConfig(v); err != nil {
-				return fmt.Errorf("failed to set logger option klog.%s = %v: %v", k, v, err)
+				return fmt.Errorf("failed to set logger option klog.%s = %v: %w", k, v, err)
 			}
 		}
 	}

pkg/utils/tls.go

@@ -47,12 +47,12 @@ func (c *TlsConfig) UpdateConfig(certFile, keyFile, caFile string) error {
 	// Load cert for authenticating this server
 	cert, err := tls.LoadX509KeyPair(certFile, keyFile)
 	if err != nil {
-		return fmt.Errorf("failed to load server certificate: %v", err)
+		return fmt.Errorf("failed to load server certificate: %w", err)
 	}
 	// Load CA cert for client cert verification
 	caCert, err := os.ReadFile(caFile)
 	if err != nil {
-		return fmt.Errorf("failed to read root certificate file: %v", err)
+		return fmt.Errorf("failed to read root certificate file: %w", err)
 	}
 	caPool := x509.NewCertPool()
 	if ok := caPool.AppendCertsFromPEM(caCert); !ok {

source/cpu/power_amd64.go

@@ -69,7 +69,7 @@ func discoverSSTBF() (bool, error) {
 
 		effectiveBaseFreq, err := strconv.Atoi(strings.TrimSpace(string(data)))
 		if err != nil {
-			return false, fmt.Errorf("non-integer value of %q: %v", filePath, err)
+			return false, fmt.Errorf("non-integer value of %q: %w", filePath, err)
 		}
 
 		// Sanity check: Return an error (we don't have enough information to

source/local/local.go

@@ -291,7 +291,7 @@ func getFeaturesFromHooks() (map[string]string, map[string]string, error) {
 			klog.InfoS("hook directory does not exist", "path", hookDir)
 			return features, labels, nil
 		}
-		return features, labels, fmt.Errorf("unable to access %v: %v", hookDir, err)
+		return features, labels, fmt.Errorf("unable to access %v: %w", hookDir, err)
 	}
 	if len(files) > 0 {
 		klog.InfoS("hooks are DEPRECATED since v0.12.0 and support will be removed in a future release; use feature files instead")
@@ -382,7 +382,7 @@ func getFeaturesFromFiles() (map[string]string, map[string]string, error) {
 			klog.InfoS("features directory does not exist", "path", featureFilesDir)
 			return features, labels, nil
 		}
-		return features, labels, fmt.Errorf("unable to access %v: %v", featureFilesDir, err)
+		return features, labels, fmt.Errorf("unable to access %v: %w", featureFilesDir, err)
 	}
 
 	for _, file := range files {

source/pci/utils.go

@@ -36,7 +36,7 @@ var optionalDevAttrs = []string{"sriov_totalvfs", "iommu_group/type", "iommu/int
 func readSinglePciAttribute(devPath string, attrName string) (string, error) {
 	data, err := os.ReadFile(filepath.Join(devPath, attrName))
 	if err != nil {
-		return "", fmt.Errorf("failed to read device attribute %s: %v", attrName, err)
+		return "", fmt.Errorf("failed to read device attribute %s: %w", attrName, err)
 	}
 	// Strip whitespace and '0x' prefix
 	attrVal := strings.TrimSpace(strings.TrimPrefix(string(data), "0x"))
@@ -55,7 +55,7 @@ func readPciDevInfo(devPath string) (*nfdv1alpha1.InstanceFeature, error) {
 	for _, attr := range mandatoryDevAttrs {
 		attrVal, err := readSinglePciAttribute(devPath, attr)
 		if err != nil {
-			return nil, fmt.Errorf("failed to read device %s: %s", attr, err)
+			return nil, fmt.Errorf("failed to read device %s: %w", attr, err)
 		}
 		attrs[attr] = attrVal
 	}

source/usb/utils.go

@@ -43,7 +43,7 @@ var devAttrFileMap = map[string]string{
 func readSingleUsbSysfsAttribute(path string) (string, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {
-		return "", fmt.Errorf("failed to read device attribute %s: %v", filepath.Base(path), err)
+		return "", fmt.Errorf("failed to read device attribute %s: %w", filepath.Base(path), err)
 	}
 
 	attrVal := strings.TrimSpace(string(data))