Golang Registry.GetRepositoryData方法代碼示例

func (srv *Server) pullRepository(r *registry.Registry, out io.Writer, local, remote, askedTag, registryEp string, sf *utils.StreamFormatter) error {
	out.Write(sf.FormatStatus("Pulling repository %s from %s", local, auth.IndexServerAddress()))

	var repoData *registry.RepositoryData
	var err error
	if registryEp == "" {
		repoData, err = r.GetRepositoryData(remote)
		if err != nil {
			return err
		}

		utils.Debugf("Updating checksums")
		// Reload the json file to make sure not to overwrite faster sums
		if err := srv.runtime.graph.UpdateChecksums(repoData.ImgList); err != nil {
			return err
		}
	} else {
		repoData = &registry.RepositoryData{
			Tokens:    []string{},
			ImgList:   make(map[string]*registry.ImgData),
			Endpoints: []string{registryEp},
		}
	}

	utils.Debugf("Retrieving the tag list")
	tagsList, err := r.GetRemoteTags(repoData.Endpoints, remote, repoData.Tokens)
	if err != nil {
		utils.Debugf("%v", err)
		return err
	}

	if registryEp != "" {
		for tag, id := range tagsList {
			repoData.ImgList[id] = &registry.ImgData{
				ID:       id,
				Tag:      tag,
				Checksum: "",
			}
		}
	}

	utils.Debugf("Registering tags")
	// If no tag has been specified, pull them all
	if askedTag == "" {
		for tag, id := range tagsList {
			repoData.ImgList[id].Tag = tag
		}
	} else {
		// Otherwise, check that the tag exists and use only that one
		id, exists := tagsList[askedTag]
		if !exists {
			return fmt.Errorf("Tag %s not found in repositoy %s", askedTag, local)
		}
		repoData.ImgList[id].Tag = askedTag
	}

	for _, img := range repoData.ImgList {
		if askedTag != "" && img.Tag != askedTag {
			utils.Debugf("(%s) does not match %s (id: %s), skipping", img.Tag, askedTag, img.ID)
			continue
		}
		out.Write(sf.FormatStatus("Pulling image %s (%s) from %s", img.ID, img.Tag, remote))
		success := false
		for _, ep := range repoData.Endpoints {
			if !(strings.HasPrefix(ep, "http://") || strings.HasPrefix(ep, "https://")) {
				ep = fmt.Sprintf("%s://%s", registry.UrlScheme(), ep)
			}
			if err := srv.pullImage(r, out, img.ID, ep+"/v1", repoData.Tokens, sf); err != nil {
				out.Write(sf.FormatStatus("Error while retrieving image for tag: %s (%s); checking next endpoint", askedTag, err))
				continue
			}
			success = true
			break
		}
		if !success {
			return fmt.Errorf("Could not find repository on any of the indexed registries.")
		}
	}
	for tag, id := range tagsList {
		if askedTag != "" && tag != askedTag {
			continue
		}
		if err := srv.runtime.repositories.Set(local, tag, id, true); err != nil {
			return err
		}
	}
	if err := srv.runtime.repositories.Save(); err != nil {
		return err
	}

	return nil
}

func (srv *Server) pullRepository(r *registry.Registry, out io.Writer, localName, remoteName, askedTag, indexEp string, sf *utils.StreamFormatter, parallel bool) error {
	out.Write(sf.FormatStatus("", "Pulling repository %s", localName))

	repoData, err := r.GetRepositoryData(indexEp, remoteName)
	if err != nil {
		return err
	}

	utils.Debugf("Retrieving the tag list")
	tagsList, err := r.GetRemoteTags(repoData.Endpoints, remoteName, repoData.Tokens)
	if err != nil {
		utils.Debugf("%v", err)
		return err
	}

	for tag, id := range tagsList {
		repoData.ImgList[id] = &registry.ImgData{
			ID:       id,
			Tag:      tag,
			Checksum: "",
		}
	}

	utils.Debugf("Registering tags")
	// If no tag has been specified, pull them all
	if askedTag == "" {
		for tag, id := range tagsList {
			repoData.ImgList[id].Tag = tag
		}
	} else {
		// Otherwise, check that the tag exists and use only that one
		id, exists := tagsList[askedTag]
		if !exists {
			return fmt.Errorf("Tag %s not found in repository %s", askedTag, localName)
		}
		repoData.ImgList[id].Tag = askedTag
	}

	errors := make(chan error)
	for _, image := range repoData.ImgList {
		downloadImage := func(img *registry.ImgData) {
			if askedTag != "" && img.Tag != askedTag {
				utils.Debugf("(%s) does not match %s (id: %s), skipping", img.Tag, askedTag, img.ID)
				if parallel {
					errors <- nil
				}
				return
			}

			if img.Tag == "" {
				utils.Debugf("Image (id: %s) present in this repository but untagged, skipping", img.ID)
				if parallel {
					errors <- nil
				}
				return
			}

			// ensure no two downloads of the same image happen at the same time
			if err := srv.poolAdd("pull", "img:"+img.ID); err != nil {
				utils.Debugf("Image (id: %s) pull is already running, skipping: %v", img.ID, err)
				if parallel {
					errors <- nil
				}
				return
			}
			defer srv.poolRemove("pull", "img:"+img.ID)

			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Pulling", fmt.Sprintf("image (%s) from %s", img.Tag, localName)))
			success := false
			var lastErr error
			for _, ep := range repoData.Endpoints {
				out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Pulling", fmt.Sprintf("image (%s) from %s, endpoint: %s", img.Tag, localName, ep)))
				if err := srv.pullImage(r, out, img.ID, ep, repoData.Tokens, sf); err != nil {
					// Its not ideal that only the last error  is returned, it would be better to concatenate the errors.
					// As the error is also given to the output stream the user will see the error.
					lastErr = err
					out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Error pulling", fmt.Sprintf("image (%s) from %s, endpoint: %s, %s", img.Tag, localName, ep, err)))
					continue
				}
				success = true
				break
			}
			if !success {
				out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Error pulling", fmt.Sprintf("image (%s) from %s, %s", img.Tag, localName, lastErr)))
				if parallel {
					errors <- fmt.Errorf("Could not find repository on any of the indexed registries.")
					return
				}
			}
			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Download", "complete"))

			if parallel {
				errors <- nil
			}
		}

		if parallel {
			go downloadImage(image)
		} else {
			downloadImage(image)
//.........這裏部分代碼省略.........

func (srv *Server) pullRepository(r *registry.Registry, out io.Writer, localName, remoteName, askedTag, indexEp string, sf *utils.StreamFormatter) error {
	out.Write(sf.FormatStatus("Pulling repository %s", localName))

	repoData, err := r.GetRepositoryData(indexEp, remoteName)
	if err != nil {
		return err
	}

	utils.Debugf("Updating checksums")
	// Reload the json file to make sure not to overwrite faster sums
	if err := srv.runtime.graph.UpdateChecksums(repoData.ImgList); err != nil {
		return err
	}

	utils.Debugf("Retrieving the tag list")
	tagsList, err := r.GetRemoteTags(repoData.Endpoints, remoteName, repoData.Tokens)
	if err != nil {
		utils.Debugf("%v", err)
		return err
	}

	for tag, id := range tagsList {
		repoData.ImgList[id] = &registry.ImgData{
			ID:       id,
			Tag:      tag,
			Checksum: "",
		}
	}

	utils.Debugf("Registering tags")
	// If no tag has been specified, pull them all
	if askedTag == "" {
		for tag, id := range tagsList {
			repoData.ImgList[id].Tag = tag
		}
	} else {
		// Otherwise, check that the tag exists and use only that one
		id, exists := tagsList[askedTag]
		if !exists {
			return fmt.Errorf("Tag %s not found in repository %s", askedTag, localName)
		}
		repoData.ImgList[id].Tag = askedTag
	}

	for _, img := range repoData.ImgList {
		if askedTag != "" && img.Tag != askedTag {
			utils.Debugf("(%s) does not match %s (id: %s), skipping", img.Tag, askedTag, img.ID)
			continue
		}

		if img.Tag == "" {
			utils.Debugf("Image (id: %s) present in this repository but untagged, skipping", img.ID)
			continue
		}
		out.Write(sf.FormatStatus("Pulling image %s (%s) from %s", img.ID, img.Tag, localName))
		success := false
		for _, ep := range repoData.Endpoints {
			if err := srv.pullImage(r, out, img.ID, ep, repoData.Tokens, sf); err != nil {
				out.Write(sf.FormatStatus("Error while retrieving image for tag: %s (%s); checking next endpoint", askedTag, err))
				continue
			}
			success = true
			break
		}
		if !success {
			return fmt.Errorf("Could not find repository on any of the indexed registries.")
		}
	}
	for tag, id := range tagsList {
		if askedTag != "" && tag != askedTag {
			continue
		}
		if err := srv.runtime.repositories.Set(localName, tag, id, true); err != nil {
			return err
		}
	}
	if err := srv.runtime.repositories.Save(); err != nil {
		return err
	}

	return nil
}

func (srv *Server) pullRepository(r *registry.Registry, out io.Writer, localName, remoteName, askedTag, indexEp string, sf *utils.StreamFormatter, parallel bool) error {
	out.Write(sf.FormatStatus("", "Pulling repository %s", localName))

	repoData, err := r.GetRepositoryData(indexEp, remoteName)
	if err != nil {
		return err
	}

	utils.Debugf("Retrieving the tag list")
	tagsList, err := r.GetRemoteTags(repoData.Endpoints, remoteName, repoData.Tokens)
	if err != nil {
		utils.Debugf("%v", err)
		return err
	}

	for tag, id := range tagsList {
		repoData.ImgList[id] = &registry.ImgData{
			ID:       id,
			Tag:      tag,
			Checksum: "",
		}
	}

	utils.Debugf("Registering tags")
	// If no tag has been specified, pull them all
	if askedTag == "" {
		for tag, id := range tagsList {
			repoData.ImgList[id].Tag = tag
		}
	} else {
		// Otherwise, check that the tag exists and use only that one
		id, exists := tagsList[askedTag]
		if !exists {
			return fmt.Errorf("Tag %s not found in repository %s", askedTag, localName)
		}
		repoData.ImgList[id].Tag = askedTag
	}

	errors := make(chan error)
	for _, image := range repoData.ImgList {
		downloadImage := func(img *registry.ImgData) {
			if askedTag != "" && img.Tag != askedTag {
				utils.Debugf("(%s) does not match %s (id: %s), skipping", img.Tag, askedTag, img.ID)
				errors <- nil
				return
			}

			if img.Tag == "" {
				utils.Debugf("Image (id: %s) present in this repository but untagged, skipping", img.ID)
				errors <- nil
				return
			}
			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Pulling", fmt.Sprintf("image (%s) from %s", img.Tag, localName)))
			success := false
			for _, ep := range repoData.Endpoints {
				if err := srv.pullImage(r, out, img.ID, ep, repoData.Tokens, sf); err != nil {
					out.Write(sf.FormatStatus(utils.TruncateID(img.ID), "Error while retrieving image for tag: %s (%s); checking next endpoint", askedTag, err))
					continue
				}
				success = true
				break
			}
			if !success {
				errors <- fmt.Errorf("Could not find repository on any of the indexed registries.")
			}
			errors <- nil
		}

		if parallel {
			go downloadImage(image)
		} else {
			downloadImage(image)
		}
	}

	if parallel {
		for i := 0; i < len(repoData.ImgList); i++ {
			if err := <-errors; err != nil {
				return err
			}
		}
	}

	for tag, id := range tagsList {
		if askedTag != "" && tag != askedTag {
			continue
		}
		if err := srv.runtime.repositories.Set(localName, tag, id, true); err != nil {
			return err
		}
	}
	if err := srv.runtime.repositories.Save(); err != nil {
		return err
	}

	return nil
}

func (srv *Server) pullRepository(r *registry.Registry, out io.Writer, remote, askedTag string, json bool) error {
	fmt.Fprintf(out, utils.FormatStatus("Pulling repository %s from %s", json), remote, auth.IndexServerAddress())
	repoData, err := r.GetRepositoryData(remote)
	if err != nil {
		return err
	}

	utils.Debugf("Updating checksums")
	// Reload the json file to make sure not to overwrite faster sums
	if err := srv.runtime.graph.UpdateChecksums(repoData.ImgList); err != nil {
		return err
	}

	utils.Debugf("Retrieving the tag list")
	tagsList, err := r.GetRemoteTags(repoData.Endpoints, remote, repoData.Tokens)
	if err != nil {
		return err
	}
	utils.Debugf("Registering tags")
	// If not specific tag have been asked, take all
	if askedTag == "" {
		for tag, id := range tagsList {
			repoData.ImgList[id].Tag = tag
		}
	} else {
		// Otherwise, check that the tag exists and use only that one
		if id, exists := tagsList[askedTag]; !exists {
			return fmt.Errorf("Tag %s not found in repositoy %s", askedTag, remote)
		} else {
			repoData.ImgList[id].Tag = askedTag
		}
	}

	for _, img := range repoData.ImgList {
		if askedTag != "" && img.Tag != askedTag {
			utils.Debugf("(%s) does not match %s (id: %s), skipping", img.Tag, askedTag, img.Id)
			continue
		}
		fmt.Fprintf(out, utils.FormatStatus("Pulling image %s (%s) from %s", json), img.Id, img.Tag, remote)
		success := false
		for _, ep := range repoData.Endpoints {
			if err := srv.pullImage(r, out, img.Id, "https://"+ep+"/v1", repoData.Tokens, json); err != nil {
				fmt.Fprintf(out, utils.FormatStatus("Error while retrieving image for tag: %s (%s); checking next endpoint\n", json), askedTag, err)
				continue
			}
			success = true
			break
		}
		if !success {
			return fmt.Errorf("Could not find repository on any of the indexed registries.")
		}
	}
	for tag, id := range tagsList {
		if askedTag != "" && tag != askedTag {
			continue
		}
		if err := srv.runtime.repositories.Set(remote, tag, id, true); err != nil {
			return err
		}
	}
	if err := srv.runtime.repositories.Save(); err != nil {
		return err
	}

	return nil
}