Golang dockerregistry.IsRegistryNotFound函数代码示例

// Search searches in the Docker registry for images that match terms
func (r DockerRegistrySearcher) Search(terms ...string) (ComponentMatches, error) {
	componentMatches := ComponentMatches{}
	for _, term := range terms {
		ref, err := imageapi.ParseDockerImageReference(term)
		if err != nil {
			return nil, err
		}

		glog.V(4).Infof("checking Docker registry for %q, allow-insecure=%v", ref.String(), r.AllowInsecure)
		connection, err := r.Client.Connect(ref.Registry, r.AllowInsecure)
		if err != nil {
			if dockerregistry.IsRegistryNotFound(err) {
				return nil, ErrNoMatch{value: term}
			}
			return nil, fmt.Errorf("can't connect to %q: %v", ref.Registry, err)
		}

		image, err := connection.ImageByTag(ref.Namespace, ref.Name, ref.Tag)
		if err != nil {
			if dockerregistry.IsNotFound(err) {
				if dockerregistry.IsTagNotFound(err) {
					glog.V(4).Infof("tag not found: %v", err)
				}
				continue
			}
			return nil, fmt.Errorf("can't connect to %q: %v", ref.Registry, err)
		}

		if len(ref.Tag) == 0 {
			ref.Tag = imageapi.DefaultImageTag
		}
		if len(ref.Registry) == 0 {
			ref.Registry = "Docker Hub"
		}
		glog.V(4).Infof("found image: %#v", image)

		dockerImage := &imageapi.DockerImage{}
		if err = kapi.Scheme.Convert(&image.Image, dockerImage); err != nil {
			return nil, err
		}

		match := &ComponentMatch{
			Value:       term,
			Argument:    fmt.Sprintf("--docker-image=%q", term),
			Name:        term,
			Description: descriptionFor(dockerImage, term, ref.Registry, ref.Tag),
			Score:       0,
			Image:       dockerImage,
			ImageTag:    ref.Tag,
			Insecure:    r.AllowInsecure,
			Meta:        map[string]string{"registry": ref.Registry},
		}
		glog.V(2).Infof("Adding %s as component match for %q with score %v", match.Description, term, match.Score)
		componentMatches = append(componentMatches, match)
	}

	return componentMatches, nil
}

func TestRegistryClientRegistryNotFound(t *testing.T) {
	conn, err := dockerregistry.NewClient().Connect("localhost:65000", false)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := conn.ImageByID("foo", "bar", "baz"); !dockerregistry.IsRegistryNotFound(err) {
		t.Error(err)
	}
}

// importTag import single tag from given ImageStream. Returns retrieved image (for later reuse),
// a flag saying if we should retry imports and an error if one occurs.
func (c *ImportController) importTag(stream *api.ImageStream, tag string, ref api.DockerImageReference, dockerImage *dockerregistry.Image, client dockerregistry.Client, insecure bool) (*dockerregistry.Image, bool, error) {
	glog.V(5).Infof("Importing tag %s from %s/%s...", tag, stream.Namespace, stream.Name)
	if dockerImage == nil {
		// TODO insecure applies to the stream's spec.dockerImageRepository, not necessarily to an external one!
		conn, err := client.Connect(ref.Registry, insecure)
		if err != nil {
			// retry-able error no. 3
			return nil, true, err
		}
		if len(ref.ID) > 0 {
			dockerImage, err = conn.ImageByID(ref.Namespace, ref.Name, ref.ID)
		} else {
			dockerImage, err = conn.ImageByTag(ref.Namespace, ref.Name, ref.Tag)
		}
		switch {
		case dockerregistry.IsRepositoryNotFound(err), dockerregistry.IsRegistryNotFound(err), dockerregistry.IsImageNotFound(err), dockerregistry.IsTagNotFound(err):
			return nil, false, err
		case err != nil:
			// retry-able error no. 4
			return nil, true, err
		}
	}
	var image api.DockerImage
	if err := kapi.Scheme.Convert(&dockerImage.Image, &image); err != nil {
		return nil, false, fmt.Errorf("could not convert image: %#v", err)
	}

	// prefer to pull by ID always
	if dockerImage.PullByID {
		// if the registry indicates the image is pullable by ID, clear the tag
		ref.Tag = ""
		ref.ID = dockerImage.ID
	}

	mapping := &api.ImageStreamMapping{
		ObjectMeta: kapi.ObjectMeta{
			Name:      stream.Name,
			Namespace: stream.Namespace,
		},
		Tag: tag,
		Image: api.Image{
			ObjectMeta: kapi.ObjectMeta{
				Name: dockerImage.ID,
			},
			DockerImageReference: ref.String(),
			DockerImageMetadata:  image,
		},
	}
	if err := c.mappings.ImageStreamMappings(stream.Namespace).Create(mapping); err != nil {
		// retry-able no. 5
		return nil, true, err
	}
	return dockerImage, false, nil
}

// Resolve searches the docker registry for repositories matching the passed in value
func (r DockerRegistryResolver) Resolve(value string) (*ComponentMatch, error) {
	ref, err := imageapi.ParseDockerImageReference(value)
	if err != nil {
		return nil, err
	}
	glog.V(4).Infof("checking Docker registry for %q", ref.String())
	connection, err := r.Client.Connect(ref.Registry, r.AllowInsecure)
	if err != nil {
		if dockerregistry.IsRegistryNotFound(err) {
			return nil, ErrNoMatch{value: value}
		}
		return nil, ErrNoMatch{value: value, qualifier: fmt.Sprintf("can't connect to %q: %v", ref.Registry, err)}
	}
	image, err := connection.ImageByTag(ref.Namespace, ref.Name, ref.Tag)
	if err != nil {
		if dockerregistry.IsNotFound(err) {
			return nil, ErrNoMatch{value: value, qualifier: err.Error()}
		}
		return nil, ErrNoMatch{value: value, qualifier: fmt.Sprintf("can't connect to %q: %v", ref.Registry, err)}
	}
	if len(ref.Tag) == 0 {
		ref.Tag = imageapi.DefaultImageTag
	}
	glog.V(4).Infof("found image: %#v", image)
	dockerImage := &imageapi.DockerImage{}
	if err = kapi.Scheme.Convert(image, dockerImage); err != nil {
		return nil, err
	}

	if len(ref.Registry) == 0 {
		ref.Registry = "Docker Hub"
	}
	return &ComponentMatch{
		Value:       value,
		Argument:    fmt.Sprintf("--docker-image=%q", value),
		Name:        value,
		Description: descriptionFor(dockerImage, value, ref.Registry),
		Builder:     IsBuilderImage(dockerImage),
		Score:       0,
		Image:       dockerImage,
		ImageTag:    ref.Tag,
	}, nil
}

// Next processes the given image stream, looking for streams that have DockerImageRepository
// set but have not yet been marked as "ready". If transient errors occur, err is returned but
// the image stream is not modified (so it will be tried again later). If a permanent
// failure occurs the image is marked with an annotation. The tags of the original spec image
// are left as is (those are updated through status).
func (c *ImportController) Next(stream *api.ImageStream) error {
	if !needsImport(stream) {
		return nil
	}
	name := stream.Spec.DockerImageRepository

	ref, err := api.ParseDockerImageReference(name)
	if err != nil {
		err = fmt.Errorf("invalid docker image repository, cannot import data: %v", err)
		util.HandleError(err)
		return c.done(stream, err.Error(), retryCount)
	}

	insecure := stream.Annotations != nil && stream.Annotations[api.InsecureRepositoryAnnotation] == "true"

	client := c.client
	if client == nil {
		client = dockerregistry.NewClient()
	}
	conn, err := client.Connect(ref.Registry, insecure, false)
	if err != nil {
		return err
	}
	tags, err := conn.ImageTags(ref.Namespace, ref.Name)
	switch {
	case dockerregistry.IsRepositoryNotFound(err), dockerregistry.IsRegistryNotFound(err):
		return c.done(stream, err.Error(), retryCount)
	case err != nil:
		return err
	}

	imageToTag := make(map[string][]string)
	for tag, image := range tags {
		if specTag, ok := stream.Spec.Tags[tag]; ok && specTag.From != nil {
			// spec tag is set to track another tag - do not import
			continue
		}

		imageToTag[image] = append(imageToTag[image], tag)
	}

	// no tags to import
	if len(imageToTag) == 0 {
		return c.done(stream, "", retryCount)
	}

	for id, tags := range imageToTag {
		dockerImage, err := conn.ImageByID(ref.Namespace, ref.Name, id)
		switch {
		case dockerregistry.IsRepositoryNotFound(err), dockerregistry.IsRegistryNotFound(err):
			return c.done(stream, err.Error(), retryCount)
		case dockerregistry.IsImageNotFound(err):
			continue
		case err != nil:
			return err
		}
		var image api.DockerImage
		if err := kapi.Scheme.Convert(&dockerImage.Image, &image); err != nil {
			err = fmt.Errorf("could not convert image: %#v", err)
			util.HandleError(err)
			return c.done(stream, err.Error(), retryCount)
		}

		idTagPresent := false
		if len(tags) > 1 && hasTag(tags, id) {
			// only set to true if we have at least 1 tag that isn't the image id
			idTagPresent = true
		}
		for _, tag := range tags {
			if idTagPresent && id == tag {
				continue
			}

			pullRef := api.DockerImageReference{
				Registry:  ref.Registry,
				Namespace: ref.Namespace,
				Name:      ref.Name,
				Tag:       tag,
			}
			// prefer to pull by ID always
			if dockerImage.PullByID {
				// if the registry indicates the image is pullable by ID, clear the tag
				pullRef.Tag = ""
				pullRef.ID = dockerImage.ID
			} else if idTagPresent {
				// if there is a tag for the image by its id (tag=tag), we can pull by id
				pullRef.Tag = id
			}

			mapping := &api.ImageStreamMapping{
				ObjectMeta: kapi.ObjectMeta{
					Name:      stream.Name,
					Namespace: stream.Namespace,
				},
				Tag: tag,
//.........这里部分代码省略.........

// getTags returns tags from default upstream image repository and explicitly defined.
// Returns a map of tags to be imported and an error if one occurs.
// Tags explicitly defined will overwrite those from default upstream image repository.
func getTags(stream *api.ImageStream, client dockerregistry.Client, insecure bool) (map[string]api.DockerImageReference, error) {
	imports := make(map[string]api.DockerImageReference)
	references := sets.NewString()

	// read explicitly defined tags
	for tagName, specTag := range stream.Spec.Tags {
		if specTag.From == nil {
			continue
		}
		if specTag.From.Kind != "DockerImage" || specTag.Reference {
			references.Insert(tagName)
			continue
		}
		ref, err := api.ParseDockerImageReference(specTag.From.Name)
		if err != nil {
			glog.V(2).Infof("error parsing DockerImage %s: %v", specTag.From.Name, err)
			continue
		}
		imports[tagName] = ref.DockerClientDefaults()
	}

	if len(stream.Spec.DockerImageRepository) == 0 {
		return imports, nil
	}

	// read tags from default upstream image repository
	streamRef, err := api.ParseDockerImageReference(stream.Spec.DockerImageRepository)
	if err != nil {
		util.HandleError(fmt.Errorf("invalid docker image repository, cannot import data: %v", err))
		return imports, nil
	}
	conn, err := client.Connect(streamRef.Registry, insecure)
	if err != nil {
		// retry-able error no. 1
		return imports, err
	}
	tags, err := conn.ImageTags(streamRef.Namespace, streamRef.Name)
	switch {
	case dockerregistry.IsRepositoryNotFound(err), dockerregistry.IsRegistryNotFound(err):
		return imports, nil
	case err != nil:
		// retry-able error no. 2
		return imports, err
	}
	for tag, image := range tags {
		if _, ok := imports[tag]; ok || references.Has(tag) {
			continue
		}
		idTagPresent := false
		// this for loop is for backwards compatibility with v1 repo, where
		// there was no image id returned with tags, like v2 does right now.
		for t2, i2 := range tags {
			if i2 == image && t2 == image {
				idTagPresent = true
				break
			}
		}
		ref := streamRef
		if idTagPresent {
			ref.Tag = image
		} else {
			ref.Tag = tag
		}
		ref.ID = image
		imports[tag] = ref
	}

	return imports, nil
}