Golang dockerfile.BuildFromConfig函数代码示例

func (s *router) postCommit(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := httputils.ParseForm(r); err != nil {
		return err
	}

	if err := httputils.CheckForJSON(r); err != nil {
		return err
	}

	cname := r.Form.Get("container")

	pause := httputils.BoolValue(r, "pause")
	version := httputils.VersionFromContext(ctx)
	if r.FormValue("pause") == "" && version.GreaterThanOrEqualTo("1.13") {
		pause = true
	}

	c, _, _, err := runconfig.DecodeContainerConfig(r.Body)
	if err != nil && err != io.EOF { //Do not fail if body is empty.
		return err
	}
	if c == nil {
		c = &container.Config{}
	}

	if !s.daemon.Exists(cname) {
		return derr.ErrorCodeNoSuchContainer.WithArgs(cname)
	}

	newConfig, err := dockerfile.BuildFromConfig(c, r.Form["changes"])
	if err != nil {
		return err
	}

	commitCfg := &types.ContainerCommitConfig{
		Pause:        pause,
		Repo:         r.Form.Get("repo"),
		Tag:          r.Form.Get("tag"),
		Author:       r.Form.Get("author"),
		Comment:      r.Form.Get("comment"),
		Config:       newConfig,
		MergeConfigs: true,
	}

	imgID, err := s.daemon.Commit(cname, commitCfg)
	if err != nil {
		return err
	}

	return httputils.WriteJSON(w, http.StatusCreated, &types.ContainerCommitResponse{
		ID: string(imgID),
	})
}

func (c *containerRouter) postContainerCommit(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := httputils.ParseForm(r); err != nil {
		return err
	}

	cname := r.Form.Get("container")
	pause := httputils.BoolValue(r, "pause")

	config, _, _, err := runconfig.DecodeContainerConfig(r.Body)
	if err != nil && err != io.EOF { //Do not fail if body is empty.
		return err
	}
	if config == nil {
		config = &container.Config{}
	}

	newConfig, err := dockerfile.BuildFromConfig(config, r.Form["changes"])
	if err != nil {
		return err
	}

	commitCfg := &types.ContainerCommitConfig{
		Pause:        pause,
		Repo:         r.Form.Get("repo"),
		Tag:          r.Form.Get("tag"),
		Author:       r.Form.Get("author"),
		Comment:      r.Form.Get("comment"),
		Config:       newConfig,
		MergeConfigs: true,
	}

	env, err := c.backend.CmdCommitImage(cname, commitCfg)
	if err != nil {
		return err
	}

	return env.WriteJSON(w, http.StatusOK)
}

// ImportImage imports an image, getting the archived layer data either from
// inConfig (if src is "-"), or from a URI specified in src. Progress output is
// written to outStream. Repository and tag names can optionally be given in
// the repo and tag arguments, respectively.
func (daemon *Daemon) ImportImage(src string, repository, tag string, msg string, inConfig io.ReadCloser, outStream io.Writer, changes []string) error {
	var (
		sf     = streamformatter.NewJSONStreamFormatter()
		rc     io.ReadCloser
		resp   *http.Response
		newRef reference.Named
	)

	if repository != "" {
		var err error
		newRef, err = reference.ParseNamed(repository)
		if err != nil {
			return err
		}

		if _, isCanonical := newRef.(reference.Canonical); isCanonical {
			return errors.New("cannot import digest reference")
		}

		if tag != "" {
			newRef, err = reference.WithTag(newRef, tag)
			if err != nil {
				return err
			}
		}
	}

	config, err := dockerfile.BuildFromConfig(&container.Config{}, changes)
	if err != nil {
		return err
	}
	if src == "-" {
		rc = inConfig
	} else {
		inConfig.Close()
		u, err := url.Parse(src)
		if err != nil {
			return err
		}
		if u.Scheme == "" {
			u.Scheme = "http"
			u.Host = src
			u.Path = ""
		}
		outStream.Write(sf.FormatStatus("", "Downloading from %s", u))
		resp, err = httputils.Download(u.String())
		if err != nil {
			return err
		}
		progressOutput := sf.NewProgressOutput(outStream, true)
		rc = progress.NewProgressReader(resp.Body, progressOutput, resp.ContentLength, "", "Importing")
	}

	defer rc.Close()
	if len(msg) == 0 {
		msg = "Imported from " + src
	}

	inflatedLayerData, err := archive.DecompressStream(rc)
	if err != nil {
		return err
	}
	// TODO: support windows baselayer?
	l, err := daemon.layerStore.Register(inflatedLayerData, "")
	if err != nil {
		return err
	}
	defer layer.ReleaseAndLog(daemon.layerStore, l)

	created := time.Now().UTC()
	imgConfig, err := json.Marshal(&image.Image{
		V1Image: image.V1Image{
			DockerVersion: dockerversion.Version,
			Config:        config,
			Architecture:  runtime.GOARCH,
			OS:            runtime.GOOS,
			Created:       created,
			Comment:       msg,
		},
		RootFS: &image.RootFS{
			Type:    "layers",
			DiffIDs: []layer.DiffID{l.DiffID()},
		},
		History: []image.History{{
			Created: created,
			Comment: msg,
		}},
	})
	if err != nil {
		return err
	}

	id, err := daemon.imageStore.Create(imgConfig)
	if err != nil {
		return err
	}
//.........这里部分代码省略.........

// Commit creates a new filesystem image from the current state of a container.
// The image can optionally be tagged into a repository.
func (daemon *Daemon) Commit(name string, c *backend.ContainerCommitConfig) (string, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return "", err
	}

	// It is not possible to commit a running container on Windows
	if runtime.GOOS == "windows" && container.IsRunning() {
		return "", fmt.Errorf("Windows does not support commit of a running container")
	}

	if c.Pause && !container.IsPaused() {
		daemon.containerPause(container)
		defer daemon.containerUnpause(container)
	}

	newConfig, err := dockerfile.BuildFromConfig(c.Config, c.Changes)
	if err != nil {
		return "", err
	}

	if c.MergeConfigs {
		if err := merge(newConfig, container.Config); err != nil {
			return "", err
		}
	}

	rwTar, err := daemon.exportContainerRw(container)
	if err != nil {
		return "", err
	}
	defer func() {
		if rwTar != nil {
			rwTar.Close()
		}
	}()

	var history []image.History
	rootFS := image.NewRootFS()
	osVersion := ""
	var osFeatures []string

	if container.ImageID != "" {
		img, err := daemon.imageStore.Get(container.ImageID)
		if err != nil {
			return "", err
		}
		history = img.History
		rootFS = img.RootFS
		osVersion = img.OSVersion
		osFeatures = img.OSFeatures
	}

	l, err := daemon.layerStore.Register(rwTar, rootFS.ChainID())
	if err != nil {
		return "", err
	}
	defer layer.ReleaseAndLog(daemon.layerStore, l)

	h := image.History{
		Author:     c.Author,
		Created:    time.Now().UTC(),
		CreatedBy:  strings.Join(container.Config.Cmd, " "),
		Comment:    c.Comment,
		EmptyLayer: true,
	}

	if diffID := l.DiffID(); layer.DigestSHA256EmptyTar != diffID {
		h.EmptyLayer = false
		rootFS.Append(diffID)
	}

	history = append(history, h)

	config, err := json.Marshal(&image.Image{
		V1Image: image.V1Image{
			DockerVersion:   dockerversion.Version,
			Config:          newConfig,
			Architecture:    runtime.GOARCH,
			OS:              runtime.GOOS,
			Container:       container.ID,
			ContainerConfig: *container.Config,
			Author:          c.Author,
			Created:         h.Created,
		},
		RootFS:     rootFS,
		History:    history,
		OSFeatures: osFeatures,
		OSVersion:  osVersion,
	})

	if err != nil {
		return "", err
	}

	id, err := daemon.imageStore.Create(config)
	if err != nil {
		return "", err
//.........这里部分代码省略.........

// Creates an image from Pull or from Import
func (s *router) postImagesCreate(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := httputils.ParseForm(r); err != nil {
		return err
	}

	var (
		image   = r.Form.Get("fromImage")
		repo    = r.Form.Get("repo")
		tag     = r.Form.Get("tag")
		message = r.Form.Get("message")
	)
	authEncoded := r.Header.Get("X-Registry-Auth")
	authConfig := &types.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 = &types.AuthConfig{}
		}
	}

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

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

	if image != "" { //pull
		// Special case: "pull -a" may send an image name with a
		// trailing :. This is ugly, but let's not break API
		// compatibility.
		image = strings.TrimSuffix(image, ":")

		var ref reference.Named
		ref, err = reference.ParseNamed(image)
		if err == nil {
			if tag != "" {
				// The "tag" could actually be a digest.
				var dgst digest.Digest
				dgst, err = digest.ParseDigest(tag)
				if err == nil {
					ref, err = reference.WithDigest(ref, dgst)
				} else {
					ref, err = reference.WithTag(ref, tag)
				}
			}
			if err == nil {
				metaHeaders := map[string][]string{}
				for k, v := range r.Header {
					if strings.HasPrefix(k, "X-Meta-") {
						metaHeaders[k] = v
					}
				}

				err = s.daemon.PullImage(ref, metaHeaders, authConfig, output)
			}
		}
	} else { //import
		var newRef reference.Named
		if repo != "" {
			var err error
			newRef, err = reference.ParseNamed(repo)
			if err != nil {
				return err
			}

			if _, isCanonical := newRef.(reference.Canonical); isCanonical {
				return errors.New("cannot import digest reference")
			}

			if tag != "" {
				newRef, err = reference.WithTag(newRef, tag)
				if err != nil {
					return err
				}
			}
		}

		src := r.Form.Get("fromSrc")

		// '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 *container.Config
		newConfig, err = dockerfile.BuildFromConfig(&container.Config{}, r.Form["changes"])
		if err != nil {
			return err
		}

		err = s.daemon.ImportImage(src, newRef, message, r.Body, output, newConfig)
	}
	if err != nil {
		if !output.Flushed() {
			return err
		}
		sf := streamformatter.NewJSONStreamFormatter()
//.........这里部分代码省略.........

// Creates an image from Pull or from Import
func (s *router) postImagesCreate(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := httputils.ParseForm(r); err != nil {
		return err
	}

	var (
		image   = r.Form.Get("fromImage")
		repo    = r.Form.Get("repo")
		tag     = r.Form.Get("tag")
		message = r.Form.Get("message")
	)
	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.PullImage(image, tag, imagePullConfig)
	} else { //import
		if tag == "" {
			repo, tag = parsers.ParseRepositoryTag(repo)
		}

		src := r.Form.Get("fromSrc")

		// '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 = dockerfile.BuildFromConfig(&runconfig.Config{}, r.Form["changes"])
		if err != nil {
			return err
		}

		err = s.daemon.ImportImage(src, repo, tag, message, r.Body, output, newConfig)
	}
	if err != nil {
		if !output.Flushed() {
			return err
		}
		sf := streamformatter.NewJSONStreamFormatter()
		output.Write(sf.FormatError(err))
	}

	return nil
}