Golang errors.NewAggregate函数代码示例

func (l *ListPodsOptions) Run() error {
	nodes, err := l.Options.GetNodes()
	if err != nil {
		return err
	}

	var printer kubectl.ResourcePrinter
	if l.Options.CmdPrinterOutput {
		printer = l.Options.CmdPrinter
	} else {
		printer, err = l.Options.GetPrintersByResource(unversioned.GroupVersionResource{Resource: "pod"})
		if err != nil {
			return err
		}
	}

	// determine if printer kind is json or yaml and modify output
	// to combine all pod lists into a single list
	if l.Options.CmdPrinterOutput {
		errs := l.handleRESTOutput(nodes, printer)
		return kerrors.NewAggregate(errs)
	}

	errList := []error{}
	for _, node := range nodes {
		err := l.runListPods(node, printer)
		if err != nil {
			// Don't bail out if one node fails
			errList = append(errList, err)
		}
	}
	return kerrors.NewAggregate(errList)
}

func (g *configRESTOptionsGetter) loadWatchCacheSettings() error {
	if g.masterOptions.KubernetesMasterConfig == nil {
		return nil
	}

	server := apiserveroptions.NewAPIServer()
	if errs := cmdflags.Resolve(g.masterOptions.KubernetesMasterConfig.APIServerArguments, server.AddFlags); len(errs) > 0 {
		return kerrors.NewAggregate(errs)
	}

	g.cacheEnabled = server.EnableWatchCache

	errs := []error{}
	for _, c := range server.WatchCacheSizes {
		tokens := strings.Split(c, "#")
		if len(tokens) != 2 {
			errs = append(errs, fmt.Errorf("invalid watch cache size value '%s', expecting <resource>#<size> format (e.g. builds#100)", c))
			continue
		}

		resource := unversioned.ParseGroupResource(tokens[0])

		size, err := strconv.Atoi(tokens[1])
		if err != nil {
			errs = append(errs, fmt.Errorf("invalid watch cache size value '%s': %v", c, err))
			continue
		}

		g.cacheSizes[resource] = size
	}
	return kerrors.NewAggregate(errs)
}

func (o *ReconcileClusterRoleBindingsOptions) RunReconcileClusterRoleBindings(cmd *cobra.Command, f *clientcmd.Factory) error {
	changedClusterRoleBindings, fetchErr := o.ChangedClusterRoleBindings()
	if fetchErr != nil && !IsClusterRoleBindingLookupError(fetchErr) {
		// we got an error that isn't due to a partial match, so we can't continue
		return fetchErr
	}

	if len(changedClusterRoleBindings) == 0 {
		return fetchErr
	}

	if (len(o.Output) != 0) && !o.Confirmed {
		list := &kapi.List{}
		for _, item := range changedClusterRoleBindings {
			list.Items = append(list.Items, item)
		}
		mapper, _ := f.Object(false)
		fn := cmdutil.VersionedPrintObject(f.PrintObject, cmd, mapper, o.Out)
		if err := fn(list); err != nil {
			return kutilerrors.NewAggregate([]error{fetchErr, err})
		}
	}

	if o.Confirmed {
		if err := o.ReplaceChangedRoleBindings(changedClusterRoleBindings); err != nil {
			return kutilerrors.NewAggregate([]error{fetchErr, err})
		}
	}

	return fetchErr
}

// Resolve resolves the provided input and returns only exact matches
func (r PerfectMatchWeightedResolver) Resolve(value string) (*ComponentMatch, error) {
	var errs []error
	candidates := ScoredComponentMatches{}
	var group MultiSimpleSearcher
	var groupWeight float32 = 0.0
	for i, resolver := range r {
		// lump all resolvers with the same weight into a single group
		if len(group) == 0 || resolver.Weight == groupWeight {
			group = append(group, resolver.Searcher)
			groupWeight = resolver.Weight
			if i != len(r)-1 && r[i+1].Weight == groupWeight {
				continue
			}
		}
		matches, err := group.Search(true, value)
		if err != nil {
			glog.V(5).Infof("Error from resolver: %v\n", err)
			errs = append(errs, err...)
		}

		sort.Sort(ScoredComponentMatches(matches))
		if len(matches) > 0 && matches[0].Score == 0.0 && (len(matches) == 1 || matches[1].Score != 0.0) {
			return matches[0], errors.NewAggregate(errs)
		}
		for _, m := range matches {
			if groupWeight != 0.0 {
				m.Score = groupWeight * m.Score
			}
			candidates = append(candidates, m)
		}
		group = nil
	}

	switch len(candidates) {
	case 0:
		return nil, ErrNoMatch{Value: value, Errs: errs}
	case 1:
		if candidates[0].Score != 0.0 {
			if candidates[0].NoTagsFound {
				return nil, ErrNoTagsFound{Value: value, Match: candidates[0], Errs: errs}
			}
			return nil, ErrPartialMatch{Value: value, Match: candidates[0], Errs: errs}
		}
		return candidates[0], errors.NewAggregate(errs)
	default:
		sort.Sort(candidates)
		if candidates[0].Score < candidates[1].Score {
			if candidates[0].Score != 0.0 {
				return nil, ErrPartialMatch{Value: value, Match: candidates[0], Errs: errs}
			}
			return candidates[0], errors.NewAggregate(errs)
		}
		return nil, ErrMultipleMatches{Value: value, Matches: candidates, Errs: errs}
	}
}

func (g *configRESTOptionsGetter) loadSettings() error {
	server := apiserveroptions.NewAPIServer()
	if g.masterOptions.KubernetesMasterConfig != nil {
		if errs := cmdflags.Resolve(g.masterOptions.KubernetesMasterConfig.APIServerArguments, server.AddFlags); len(errs) > 0 {
			return kerrors.NewAggregate(errs)
		}
	}

	storageGroupsToEncodingVersion, err := server.StorageGroupsToEncodingVersion()
	if err != nil {
		return err
	}

	storageConfig := server.StorageConfig
	storageConfig.Prefix = g.masterOptions.EtcdStorageConfig.OpenShiftStoragePrefix
	storageConfig.ServerList = g.masterOptions.EtcdClientInfo.URLs
	storageConfig.KeyFile = g.masterOptions.EtcdClientInfo.ClientCert.KeyFile
	storageConfig.CertFile = g.masterOptions.EtcdClientInfo.ClientCert.CertFile
	storageConfig.CAFile = g.masterOptions.EtcdClientInfo.CA

	storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
		storageConfig, server.DefaultStorageMediaType, kapi.Codecs,
		genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
		nil,
		g.defaultResourceConfig, server.RuntimeConfig)
	if err != nil {
		return err
	}
	storageFactory.DefaultResourcePrefixes = g.defaultResourcePrefixes
	g.storageFactory = storageFactory

	g.cacheEnabled = server.EnableWatchCache

	errs := []error{}
	for _, c := range server.WatchCacheSizes {
		tokens := strings.Split(c, "#")
		if len(tokens) != 2 {
			errs = append(errs, fmt.Errorf("invalid watch cache size value '%s', expecting <resource>#<size> format (e.g. builds#100)", c))
			continue
		}

		resource := unversioned.ParseGroupResource(tokens[0])

		size, err := strconv.Atoi(tokens[1])
		if err != nil {
			errs = append(errs, fmt.Errorf("invalid watch cache size value '%s': %v", c, err))
			continue
		}

		g.cacheSizes[resource] = size
	}
	return kerrors.NewAggregate(errs)
}

// Run identifies images eligible for pruning, invoking imagePruner for each image, and then it identifies
// image configs and layers  eligible for pruning, invoking layerLinkPruner for each registry URL that has
// layers or configs that can be pruned.
func (p *pruner) Prune(
	imagePruner ImageDeleter,
	streamPruner ImageStreamDeleter,
	layerLinkPruner LayerLinkDeleter,
	blobPruner BlobDeleter,
	manifestPruner ManifestDeleter,
) error {
	allNodes := p.g.Nodes()

	imageNodes := getImageNodes(allNodes)
	if len(imageNodes) == 0 {
		return nil
	}

	registryURL, err := p.determineRegistry(imageNodes)
	if err != nil {
		return fmt.Errorf("unable to determine registry: %v", err)
	}
	glog.V(1).Infof("Using registry: %s", registryURL)

	if err := p.registryPinger.ping(registryURL); err != nil {
		return fmt.Errorf("error communicating with registry: %v", err)
	}

	prunableImageNodes, prunableImageIDs := calculatePrunableImages(p.g, imageNodes)

	errs := []error{}
	errs = append(errs, pruneStreams(p.g, prunableImageNodes, streamPruner)...)
	// if namespace is specified prune only ImageStreams and nothing more
	if len(p.algorithm.namespace) > 0 {
		return kerrors.NewAggregate(errs)
	}

	graphWithoutPrunableImages := subgraphWithoutPrunableImages(p.g, prunableImageIDs)
	prunableComponents := calculatePrunableImageComponents(graphWithoutPrunableImages)
	errs = append(errs, pruneImageComponents(p.g, p.registryClient, registryURL, prunableComponents, layerLinkPruner)...)
	errs = append(errs, pruneBlobs(p.g, p.registryClient, registryURL, prunableComponents, blobPruner)...)
	errs = append(errs, pruneManifests(p.g, p.registryClient, registryURL, prunableImageNodes, manifestPruner)...)

	if len(errs) > 0 {
		// If we had any errors removing image references from image streams or deleting
		// layers, blobs, or manifest data from the registry, stop here and don't
		// delete any images. This way, you can rerun prune and retry things that failed.
		return kerrors.NewAggregate(errs)
	}

	errs = append(errs, pruneImages(p.g, prunableImageNodes, imagePruner)...)
	return kerrors.NewAggregate(errs)
}

// ServerPreferredNamespacedGroupVersionResources uses the specified client to discover the set of preferred groupVersionResources that are namespaced
func ServerPreferredNamespacedGroupVersionResources(discoveryClient discovery.DiscoveryInterface) ([]unversioned.GroupVersionResource, error) {
	results := []unversioned.GroupVersionResource{}
	serverGroupList, err := discoveryClient.ServerGroups()
	if err != nil {
		return results, err
	}

	allErrs := []error{}
	for _, apiGroup := range serverGroupList.Groups {
		preferredVersion := apiGroup.PreferredVersion
		apiResourceList, err := discoveryClient.ServerResourcesForGroupVersion(preferredVersion.GroupVersion)
		if err != nil {
			allErrs = append(allErrs, err)
			continue
		}
		groupVersion := unversioned.GroupVersion{Group: apiGroup.Name, Version: preferredVersion.Version}
		for _, apiResource := range apiResourceList.APIResources {
			if !apiResource.Namespaced {
				continue
			}
			if strings.Contains(apiResource.Name, "/") {
				continue
			}
			results = append(results, groupVersion.WithResource(apiResource.Name))
		}
	}
	return results, utilerrors.NewAggregate(allErrs)
}

// resolve the references to ensure they are all valid, and identify any images that don't match user input.
func (c *AppConfig) resolve(components app.ComponentReferences) error {
	errs := []error{}
	for _, ref := range components {
		if err := ref.Resolve(); err != nil {
			errs = append(errs, err)
			continue
		}
		switch input := ref.Input(); {
		case !input.ExpectToBuild && input.ResolvedMatch.Builder:
			if c.Strategy != "docker" {
				glog.Infof("Image %q is a builder, so a repository will be expected unless you also specify --strategy=docker", input)
				input.ExpectToBuild = true
			}
		case input.ExpectToBuild && input.ResolvedMatch.IsTemplate():
			// TODO: harder - break the template pieces and check if source code can be attached (look for a build config, build image, etc)
			errs = append(errs, fmt.Errorf("template with source code explicitly attached is not supported - you must either specify the template and source code separately or attach an image to the source code using the '[image]~[code]' form"))
			continue
		case input.ExpectToBuild && !input.ResolvedMatch.Builder && !input.Uses.IsDockerBuild():
			if len(c.Strategy) == 0 {
				errs = append(errs, fmt.Errorf("none of the images that match %q can build source code - check whether this is the image you want to use, then use --strategy=source to build using source or --strategy=docker to treat this as a Docker base image and set up a layered Docker build", ref))
				continue
			}
		}
	}
	return errors.NewAggregate(errs)
}

// tagImages tags images from the deployment
func (e *HookExecutor) tagImages(hook *deployapi.LifecycleHook, deployment *kapi.ReplicationController, suffix, label string) error {
	var errs []error
	for _, action := range hook.TagImages {
		value, ok := findContainerImage(deployment, action.ContainerName)
		if !ok {
			errs = append(errs, fmt.Errorf("unable to find image for container %q, container could not be found", action.ContainerName))
			continue
		}
		namespace := action.To.Namespace
		if len(namespace) == 0 {
			namespace = deployment.Namespace
		}
		if _, err := e.tags.ImageStreamTags(namespace).Update(&imageapi.ImageStreamTag{
			ObjectMeta: kapi.ObjectMeta{
				Name:      action.To.Name,
				Namespace: namespace,
			},
			Tag: &imageapi.TagReference{
				From: &kapi.ObjectReference{
					Kind: "DockerImage",
					Name: value,
				},
			},
		}); err != nil {
			errs = append(errs, err)
			continue
		}
		fmt.Fprintf(e.out, "--> %s: Tagged %q into %s/%s\n", label, value, action.To.Namespace, action.To.Name)
	}

	return utilerrors.NewAggregate(errs)
}

// addDockerfile adds a Dockerfile passed in the command line to the reference
// builder.
func (c *AppConfig) addDockerfile() error {
	if len(c.Strategy) != 0 && c.Strategy != "docker" {
		return fmt.Errorf("when directly referencing a Dockerfile, the strategy must must be 'docker'")
	}
	_, repos, errs := c.refBuilder.Result()
	if err := errors.NewAggregate(errs); err != nil {
		return err
	}
	switch len(repos) {
	case 0:
		// Create a new SourceRepository with the Dockerfile.
		repo, err := app.NewSourceRepositoryForDockerfile(c.Dockerfile)
		if err != nil {
			return fmt.Errorf("provided Dockerfile is not valid: %v", err)
		}
		c.refBuilder.AddExistingSourceRepository(repo)
	case 1:
		// Add the Dockerfile to the existing SourceRepository, so that
		// eventually we generate a single BuildConfig with multiple
		// sources.
		if err := repos[0].AddDockerfile(c.Dockerfile); err != nil {
			return fmt.Errorf("provided Dockerfile is not valid: %v", err)
		}
	default:
		// Invalid.
		return fmt.Errorf("--dockerfile cannot be used with multiple source repositories")
	}
	return nil
}

func (b *Builder) visitorResult() *Result {
	if len(b.errs) > 0 {
		return &Result{err: utilerrors.NewAggregate(b.errs)}
	}

	if b.selectAll {
		b.selector = labels.Everything()
	}

	// visit items specified by paths
	if len(b.paths) != 0 {
		return b.visitByPaths()
	}

	// visit selectors
	if b.selector != nil {
		return b.visitBySelector()
	}

	// visit items specified by resource and name
	if len(b.resourceTuples) != 0 {
		return b.visitByResource()
	}

	// visit items specified by name
	if len(b.names) != 0 {
		return b.visitByName()
	}

	if len(b.resources) != 0 {
		return &Result{err: fmt.Errorf("resource(s) were provided, but no name, label selector, or --all flag specified")}
	}
	return &Result{err: missingResourceError}
}

func (oc *OvsController) validateServiceNetwork(networkCIDR string, hostIPNets []*net.IPNet) error {
	serviceIP, serviceIPNet, err := net.ParseCIDR(networkCIDR)
	if err != nil {
		return fmt.Errorf("Failed to parse network address: %s", networkCIDR)
	}

	errList := []error{}
	for _, ipNet := range hostIPNets {
		if ipNet.Contains(serviceIP) {
			errList = append(errList, fmt.Errorf("Error: Service IP: %s conflicts with host network: %s", ipNet.String(), networkCIDR))
		}
		if serviceIPNet.Contains(ipNet.IP) {
			errList = append(errList, fmt.Errorf("Error: Host network with IP: %s conflicts with service network: %s", ipNet.IP.String(), networkCIDR))
		}
	}

	services, _, err := oc.Registry.GetServices()
	if err != nil {
		return err
	}
	for _, svc := range services {
		if !serviceIPNet.Contains(net.ParseIP(svc.IP)) {
			errList = append(errList, fmt.Errorf("Error: Existing service with IP: %s is not part of service network: %s", svc.IP, networkCIDR))
		}
	}
	return kerrors.NewAggregate(errList)
}

// ToAggregate converts the ErrorList into an errors.Aggregate.
func (list ErrorList) ToAggregate() utilerrors.Aggregate {
	errs := make([]error, len(list))
	for i := range list {
		errs[i] = list[i]
	}
	return utilerrors.NewAggregate(errs)
}

func statusCausesToAggrError(scs []api.StatusCause) utilerrors.Aggregate {
	errs := make([]error, len(scs))
	for i, sc := range scs {
		errs[i] = fmt.Errorf("%s: %s", sc.Field, sc.Message)
	}
	return utilerrors.NewAggregate(errs)
}

// collectData collects requested downwardAPI in data map.
// Map's key is the requested name of file to dump
// Map's value is the (sorted) content of the field to be dumped in the file.
func (d *downwardAPIVolume) collectData() (map[string][]byte, error) {
	errlist := []error{}
	data := make(map[string][]byte)
	for _, fileInfo := range d.items {
		if fileInfo.FieldRef != nil {
			if values, err := fieldpath.ExtractFieldPathAsString(d.pod, fileInfo.FieldRef.FieldPath); err != nil {
				glog.Errorf("Unable to extract field %s: %s", fileInfo.FieldRef.FieldPath, err.Error())
				errlist = append(errlist, err)
			} else {
				data[path.Clean(fileInfo.Path)] = []byte(sortLines(values))
			}
		} else if fileInfo.ResourceFieldRef != nil {
			containerName := fileInfo.ResourceFieldRef.ContainerName
			nodeAllocatable, err := d.plugin.host.GetNodeAllocatable()
			if err != nil {
				errlist = append(errlist, err)
			} else if values, err := fieldpath.ExtractResourceValueByContainerNameAndNodeAllocatable(fileInfo.ResourceFieldRef, d.pod, containerName, nodeAllocatable); err != nil {
				glog.Errorf("Unable to extract field %s: %s", fileInfo.ResourceFieldRef.Resource, err.Error())
				errlist = append(errlist, err)
			} else {
				data[path.Clean(fileInfo.Path)] = []byte(sortLines(values))
			}
		}
	}
	return data, utilerrors.NewAggregate(errlist)
}