Golang BuildFromConfig Examples

Example #1

File: server.go Project: srikalyan/docker

// Creates an image from Pull or from Import
func (s *Server) postImagesCreate(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := parseForm(r); err != nil {
		return err
	}

	var (
		image = r.Form.Get("fromImage")
		repo  = r.Form.Get("repo")
		tag   = r.Form.Get("tag")
	)
	authEncoded := r.Header.Get("X-Registry-Auth")
	authConfig := &cliconfig.AuthConfig{}
	if authEncoded != "" {
		authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
		if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
			// for a pull it is not an error if no auth was given
			// to increase compatibility with the existing api it is defaulting to be empty
			authConfig = &cliconfig.AuthConfig{}
		}
	}

	var (
		err    error
		output = ioutils.NewWriteFlusher(w)
	)

	w.Header().Set("Content-Type", "application/json")

	if image != "" { //pull
		if tag == "" {
			image, tag = parsers.ParseRepositoryTag(image)
		}
		metaHeaders := map[string][]string{}
		for k, v := range r.Header {
			if strings.HasPrefix(k, "X-Meta-") {
				metaHeaders[k] = v
			}
		}

		imagePullConfig := &graph.ImagePullConfig{
			MetaHeaders: metaHeaders,
			AuthConfig:  authConfig,
			OutStream:   output,
		}

		err = s.daemon.Repositories().Pull(image, tag, imagePullConfig)
	} else { //import
		if tag == "" {
			repo, tag = parsers.ParseRepositoryTag(repo)
		}

		src := r.Form.Get("fromSrc")
		imageImportConfig := &graph.ImageImportConfig{
			Changes:   r.Form["changes"],
			InConfig:  r.Body,
			OutStream: output,
		}

		// 'err' MUST NOT be defined within this block, we need any error
		// generated from the download to be available to the output
		// stream processing below
		var newConfig *runconfig.Config
		newConfig, err = builder.BuildFromConfig(s.daemon, &runconfig.Config{}, imageImportConfig.Changes)
		if err != nil {
			return err
		}
		imageImportConfig.ContainerConfig = newConfig

		err = s.daemon.Repositories().Import(src, repo, tag, imageImportConfig)
	}
	if err != nil {
		if !output.Flushed() {
			return err
		}
		sf := streamformatter.NewJSONStreamFormatter()
		output.Write(sf.FormatError(err))
	}

	return nil

}

Example #2

File: server.go Project: pbx0/docker

// Creates an image from Pull or from Import
func (s *Server) postImagesCreate(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := parseForm(r); err != nil {
		return err
	}

	var (
		image = r.Form.Get("fromImage")
		repo  = r.Form.Get("repo")
		tag   = r.Form.Get("tag")
	)
	authEncoded := r.Header.Get("X-Registry-Auth")
	authConfig := &cliconfig.AuthConfig{}
	if authEncoded != "" {
		authJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authEncoded))
		if err := json.NewDecoder(authJson).Decode(authConfig); err != nil {
			// for a pull it is not an error if no auth was given
			// to increase compatibility with the existing api it is defaulting to be empty
			authConfig = &cliconfig.AuthConfig{}
		}
	}

	var (
		opErr   error
		useJSON = version.GreaterThan("1.0")
	)

	if useJSON {
		w.Header().Set("Content-Type", "application/json")
	}

	if image != "" { //pull
		if tag == "" {
			image, tag = parsers.ParseRepositoryTag(image)
		}
		metaHeaders := map[string][]string{}
		for k, v := range r.Header {
			if strings.HasPrefix(k, "X-Meta-") {
				metaHeaders[k] = v
			}
		}

		imagePullConfig := &graph.ImagePullConfig{
			Parallel:    version.GreaterThan("1.3"),
			MetaHeaders: metaHeaders,
			AuthConfig:  authConfig,
			OutStream:   utils.NewWriteFlusher(w),
			Json:        useJSON,
		}

		opErr = s.daemon.Repositories().Pull(image, tag, imagePullConfig)
	} else { //import
		if tag == "" {
			repo, tag = parsers.ParseRepositoryTag(repo)
		}

		src := r.Form.Get("fromSrc")
		imageImportConfig := &graph.ImageImportConfig{
			Changes:   r.Form["changes"],
			InConfig:  r.Body,
			OutStream: utils.NewWriteFlusher(w),
			Json:      useJSON,
		}

		newConfig, err := builder.BuildFromConfig(s.daemon, &runconfig.Config{}, imageImportConfig.Changes)
		if err != nil {
			return err
		}
		imageImportConfig.ContainerConfig = newConfig

		opErr = s.daemon.Repositories().Import(src, repo, tag, imageImportConfig)
	}

	if opErr != nil {
		sf := streamformatter.NewStreamFormatter(useJSON)
		return fmt.Errorf(string(sf.FormatError(opErr)))
	}

	return nil
}