Ejemplo n.º 1
0
func (b *buildFile) Build(context io.Reader) (string, error) {
	tmpdirPath, err := ioutil.TempDir("", "docker-build")
	if err != nil {
		return "", err
	}

	decompressedStream, err := archive.DecompressStream(context)
	if err != nil {
		return "", err
	}

	b.context = &tarsum.TarSum{Reader: decompressedStream, DisableCompression: true}
	if err := archive.Untar(b.context, tmpdirPath, nil); err != nil {
		return "", err
	}
	defer os.RemoveAll(tmpdirPath)

	b.contextPath = tmpdirPath
	filename := path.Join(tmpdirPath, "Dockerfile")
	if _, err := os.Stat(filename); os.IsNotExist(err) {
		return "", fmt.Errorf("Can't build a directory with no Dockerfile")
	}
	fileBytes, err := ioutil.ReadFile(filename)
	if err != nil {
		return "", err
	}
	if len(fileBytes) == 0 {
		return "", ErrDockerfileEmpty
	}
	var (
		dockerfile = lineContinuation.ReplaceAllString(stripComments(fileBytes), "")
		stepN      = 0
	)
	for _, line := range strings.Split(dockerfile, "\n") {
		line = strings.Trim(strings.Replace(line, "\t", " ", -1), " \t\r\n")
		if len(line) == 0 {
			continue
		}
		if err := b.BuildStep(fmt.Sprintf("%d", stepN), line); err != nil {
			if b.forceRm {
				b.clearTmp(b.tmpContainers)
			}
			return "", err
		} else if b.rm {
			b.clearTmp(b.tmpContainers)
		}
		stepN += 1
	}
	if b.image != "" {
		fmt.Fprintf(b.outStream, "Successfully built %s\n", utils.TruncateID(b.image))
		return b.image, nil
	}
	return "", fmt.Errorf("No image was generated. This may be because the Dockerfile does not, like, do anything.\n")
}
Ejemplo n.º 2
0
// Loads a set of images into the repository. This is the complementary of ImageExport.
// The input stream is an uncompressed tar ball containing images and metadata.
func (s *TagStore) CmdLoad(job *engine.Job) engine.Status {
	tmpImageDir, err := ioutil.TempDir("", "docker-import-")
	if err != nil {
		return job.Error(err)
	}
	defer os.RemoveAll(tmpImageDir)

	var (
		repoTarFile = path.Join(tmpImageDir, "repo.tar")
		repoDir     = path.Join(tmpImageDir, "repo")
	)

	tarFile, err := os.Create(repoTarFile)
	if err != nil {
		return job.Error(err)
	}
	if _, err := io.Copy(tarFile, job.Stdin); err != nil {
		return job.Error(err)
	}
	tarFile.Close()

	repoFile, err := os.Open(repoTarFile)
	if err != nil {
		return job.Error(err)
	}
	if err := os.Mkdir(repoDir, os.ModeDir); err != nil {
		return job.Error(err)
	}
	images, err := s.graph.Map()
	if err != nil {
		return job.Error(err)
	}
	excludes := make([]string, len(images))
	i := 0
	for k := range images {
		excludes[i] = k
		i++
	}
	if err := archive.Untar(repoFile, repoDir, &archive.TarOptions{Excludes: excludes}); err != nil {
		return job.Error(err)
	}

	dirs, err := ioutil.ReadDir(repoDir)
	if err != nil {
		return job.Error(err)
	}

	for _, d := range dirs {
		if d.IsDir() {
			if err := s.recursiveLoad(job.Eng, d.Name(), tmpImageDir); err != nil {
				return job.Error(err)
			}
		}
	}

	repositoriesJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", "repositories"))
	if err == nil {
		repositories := map[string]Repository{}
		if err := json.Unmarshal(repositoriesJson, &repositories); err != nil {
			return job.Error(err)
		}

		for imageName, tagMap := range repositories {
			for tag, address := range tagMap {
				if err := s.Set(imageName, tag, address, true); err != nil {
					return job.Error(err)
				}
			}
		}
	} else if !os.IsNotExist(err) {
		return job.Error(err)
	}

	return engine.StatusOK
}
Ejemplo n.º 3
0
func (a *Driver) ApplyDiff(id string, diff archive.ArchiveReader) error {
	return archive.Untar(diff, path.Join(a.rootPath(), "diff", id), nil)
}