// LocalPath returns the local path of the source repository
func (r *SourceRepository) LocalPath() (string, error) {
	if len(r.localDir) > 0 {
		return r.localDir, nil
	}
	switch {
	case r.url.Scheme == "file":
		r.localDir = filepath.Join(r.url.Path, r.contextDir)
	default:
		gitRepo := git.NewRepository()
		var err error
		if r.localDir, err = ioutil.TempDir("", "gen"); err != nil {
			return "", err
		}
		localURL := r.url
		ref := localURL.Fragment
		localURL.Fragment = ""
		if err = gitRepo.Clone(r.localDir, localURL.String()); err != nil {
			return "", fmt.Errorf("cannot clone repository %s: %v", localURL.String(), err)
		}
		if len(ref) > 0 {
			if err = gitRepo.Checkout(r.localDir, ref); err != nil {
				return "", fmt.Errorf("cannot checkout ref %s of repository %s: %v", ref, localURL.String(), err)
			}
		}
		r.localDir = filepath.Join(r.localDir, r.contextDir)
	}
	return r.localDir, nil
}

// RemoteURL returns the remote URL of the source repository
func (r *SourceRepository) RemoteURL() (*url.URL, bool, error) {
	if r.remoteURL != nil {
		return r.remoteURL, true, nil
	}
	switch r.url.Scheme {
	case "file":
		gitRepo := git.NewRepository()
		remote, ok, err := gitRepo.GetOriginURL(r.url.Path)
		if err != nil && err != git.ErrGitNotAvailable {
			return nil, false, err
		}
		if !ok {
			return nil, ok, nil
		}
		ref := gitRepo.GetRef(r.url.Path)
		if len(ref) > 0 {
			remote = fmt.Sprintf("%s#%s", remote, ref)
		}

		if r.remoteURL, err = git.ParseRepository(remote); err != nil {
			return nil, false, err
		}
	default:
		r.remoteURL = &r.url
	}
	return r.remoteURL, true, nil
}

// NewBuildStrategyRefGenerator creates a BuildStrategyRefGenerator
func NewBuildStrategyRefGenerator(sourceDetectors source.Detectors) *BuildStrategyRefGenerator {
	return &BuildStrategyRefGenerator{
		gitRepository:     git.NewRepository(),
		dockerfileFinder:  dockerfile.NewFinder(),
		sourceDetectors:   sourceDetectors,
		imageRefGenerator: NewImageRefGenerator(),
	}
}

// IsRemoteRepository checks whether the provided string is a remote repository or not
func IsRemoteRepository(s string) bool {
	if !s2igit.New().ValidCloneSpecRemoteOnly(s) {
		return false
	}
	gitRepo := git.NewRepository()
	if err := gitRepo.ListRemote(s); err != nil {
		return false
	}
	return true
}

// IsRemoteRepository checks whether the provided string is a remote repository or not
func IsRemoteRepository(s string) bool {
	if !s2igit.New(s2iutil.NewFileSystem()).ValidCloneSpecRemoteOnly(s) {
		return false
	}
	url, err := url.Parse(s)
	if err != nil {
		return false
	}
	url.Fragment = ""
	gitRepo := git.NewRepository()
	if _, _, err := gitRepo.ListRemote(url.String()); err != nil {
		return false
	}
	return true
}

// newTestS2IBuilder creates a mock implementation of S2IBuilder, instrumenting
// different parts to return specific errors according to config.
func newTestS2IBuilder(config testS2IBuilderConfig) *S2IBuilder {
	return newS2IBuilder(
		&FakeDocker{
			errPushImage: config.errPushImage,
		},
		"/docker.socket",
		testclient.NewSimpleFake().Builds(""),
		makeBuild(),
		git.NewRepository(),
		testStiBuilderFactory{
			getStrategyErr: config.getStrategyErr,
			buildError:     config.buildError,
		},
		runtimeConfigValidator{},
	)
}

// creates mock implemenation of STI builder, instrumenting different parts of a process to return errors
func makeStiBuilder(
	errPushImage error,
	getStrategyErr error,
	buildError error,
	validationErrors []validation.ValidationError) S2IBuilder {
	return *newS2IBuilder(
		testDockerClient{
			errPushImage: errPushImage,
		},
		"/docker.socket",
		testclient.NewSimpleFake().Builds(""),
		makeBuild(),
		git.NewRepository(),
		testStiBuilderFactory{getStrategyErr: getStrategyErr, buildError: buildError},
		testStiConfigValidator{errors: validationErrors},
	)
}

// LocalPath returns the local path of the source repository
func (r *SourceRepository) LocalPath() (string, error) {
	if len(r.localDir) > 0 {
		return r.localDir, nil
	}
	switch {
	case r.url.Scheme == "file":
		r.localDir = filepath.Join(r.url.Path, r.contextDir)
	default:
		gitRepo := git.NewRepository()
		var err error
		if r.localDir, err = ioutil.TempDir("", "gen"); err != nil {
			return "", err
		}
		localURL, ref := cloneURLAndRef(&r.url)
		r.localDir, err = CloneAndCheckoutSources(gitRepo, localURL.String(), ref, r.localDir, r.contextDir)
		if err != nil {
			return "", err
		}
	}
	return r.localDir, nil
}

// RemoteURL returns the remote URL of the source repository
func (r *SourceRepository) RemoteURL() (*url.URL, error) {
	if r.remoteURL != nil {
		return r.remoteURL, nil
	}
	switch r.url.Scheme {
	case "file":
		gitRepo := git.NewRepository()
		remote, _, err := gitRepo.GetOriginURL(r.url.Path)
		if err != nil {
			return nil, err
		}
		ref := gitRepo.GetRef(r.url.Path)
		if len(ref) > 0 {
			remote = fmt.Sprintf("%s#%s", remote, ref)
		}
		if r.remoteURL, err = url.Parse(remote); err != nil {
			return nil, err
		}
	default:
		r.remoteURL = &r.url
	}
	return r.remoteURL, nil
}

// RunStartBuild contains all the necessary functionality for the OpenShift cli start-build command
func RunStartBuild(f *clientcmd.Factory, out io.Writer, cmd *cobra.Command, args []string, webhooks util.StringFlag) error {
	webhook := cmdutil.GetFlagString(cmd, "from-webhook")
	buildName := cmdutil.GetFlagString(cmd, "from-build")
	follow := cmdutil.GetFlagBool(cmd, "follow")

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 {
			return cmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments or '--from-build'")
		}
		path := cmdutil.GetFlagString(cmd, "git-repository")
		postReceivePath := cmdutil.GetFlagString(cmd, "git-post-receive")
		repo := git.NewRepository()
		return RunStartBuildWebHook(f, out, webhook, path, postReceivePath, repo)
	case len(args) != 1 && len(buildName) == 0:
		return cmdutil.UsageError(cmd, "Must pass a name of a BuildConfig or specify build name with '--from-build' flag")
	}

	name := buildName
	isBuild := true
	if len(name) == 0 {
		name = args[0]
		isBuild = false
	}

	if webhooks.Provided() {
		return RunListBuildWebHooks(f, out, cmd.Out(), name, isBuild, webhooks.String())
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	request := &buildapi.BuildRequest{
		ObjectMeta: kapi.ObjectMeta{Name: name},
	}
	var newBuild *buildapi.Build
	if isBuild {
		if newBuild, err = client.Builds(namespace).Clone(request); err != nil {
			return err
		}
	} else {
		if newBuild, err = client.BuildConfigs(namespace).Instantiate(request); err != nil {
			return err
		}
	}
	fmt.Fprintf(out, "%s\n", newBuild.Name)

	if follow {
		opts := buildapi.BuildLogOptions{
			Follow: true,
			NoWait: false,
		}
		rd, err := client.BuildLogs(namespace).Get(newBuild.Name, opts).Stream()
		if err != nil {
			return fmt.Errorf("error getting logs: %v", err)
		}
		defer rd.Close()
		_, err = io.Copy(out, rd)
		if err != nil {
			return fmt.Errorf("error streaming logs: %v", err)
		}
	}
	return nil
}

// RunStartBuild contains all the necessary functionality for the OpenShift cli start-build command
func RunStartBuild(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, args []string, webhooks util.StringFlag) error {
	webhook := cmdutil.GetFlagString(cmd, "from-webhook")
	buildName := cmdutil.GetFlagString(cmd, "from-build")
	follow := cmdutil.GetFlagBool(cmd, "follow")
	commit := cmdutil.GetFlagString(cmd, "commit")
	waitForComplete := cmdutil.GetFlagBool(cmd, "wait")
	fromFile := cmdutil.GetFlagString(cmd, "from-file")
	fromDir := cmdutil.GetFlagString(cmd, "from-dir")
	fromRepo := cmdutil.GetFlagString(cmd, "from-repo")
	//shortOutput := false

	//mapper, _ := f.Object()

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 || len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0 {
			return cmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments and all '--from-*' flags")
		}
		path := cmdutil.GetFlagString(cmd, "git-repository")
		postReceivePath := cmdutil.GetFlagString(cmd, "git-post-receive")
		repo := git.NewRepository()
		return RunStartBuildWebHook(f, out, webhook, path, postReceivePath, repo)
	case len(args) != 1 && len(buildName) == 0:
		return cmdutil.UsageError(cmd, "Must pass a name of a build config or specify build name with '--from-build' flag")
	}

	name := buildName
	isBuild := true
	if len(name) == 0 {
		name = args[0]
		isBuild = false
	}

	if webhooks.Provided() {
		return RunListBuildWebHooks(f, out, cmd.Out(), name, isBuild, webhooks.String())
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	request := &buildapi.BuildRequest{
		ObjectMeta: kapi.ObjectMeta{Name: name},
	}
	if len(commit) > 0 {
		request.Revision = &buildapi.SourceRevision{
			Type: buildapi.BuildSourceGit,
			Git: &buildapi.GitSourceRevision{
				Commit: commit,
			},
		}
	}

	git := git.NewRepository()

	var newBuild *buildapi.Build
	switch {
	case !isBuild && (len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0):
		request := &buildapi.BinaryBuildRequestOptions{
			ObjectMeta: kapi.ObjectMeta{
				Name:      name,
				Namespace: namespace,
			},
			Commit: commit,
		}
		if newBuild, err = streamPathToBuild(git, in, cmd.Out(), client.BuildConfigs(namespace), fromDir, fromFile, fromRepo, request); err != nil {
			return err
		}

	case isBuild:
		if newBuild, err = client.Builds(namespace).Clone(request); err != nil {
			return err
		}

	default:
		if newBuild, err = client.BuildConfigs(namespace).Instantiate(request); err != nil {
			return err
		}
	}

	//cmdutil.PrintSuccess(mapper, shortOutput, out, "Build", newBuild.Name, "started")
	fmt.Fprintln(out, newBuild.Name)

	var (
		wg      sync.WaitGroup
		exitErr error
	)

	// Wait for the build to complete
	if waitForComplete {
		wg.Add(1)
		go func() {
			defer wg.Done()
//.........这里部分代码省略.........

// TestDockerfilePath validates that we can use a Dockefile with a custom name, and in a sub-directory
func TestDockerfilePath(t *testing.T) {
	tests := []struct {
		contextDir     string
		dockerfilePath string
		dockerStrategy *api.DockerBuildStrategy
	}{
		// default Dockerfile path
		{
			dockerfilePath: "Dockerfile",
			dockerStrategy: &api.DockerBuildStrategy{},
		},
		// custom Dockerfile path in the root context
		{
			dockerfilePath: "mydockerfile",
			dockerStrategy: &api.DockerBuildStrategy{
				DockerfilePath: "mydockerfile",
			},
		},
		// custom Dockerfile path in a sub directory
		{
			dockerfilePath: "dockerfiles/mydockerfile",
			dockerStrategy: &api.DockerBuildStrategy{
				DockerfilePath: "dockerfiles/mydockerfile",
			},
		},
		// custom Dockerfile path in a sub directory
		// with a contextDir
		{
			contextDir:     "somedir",
			dockerfilePath: "dockerfiles/mydockerfile",
			dockerStrategy: &api.DockerBuildStrategy{
				DockerfilePath: "dockerfiles/mydockerfile",
			},
		},
	}

	for _, test := range tests {
		buildDir, err := ioutil.TempDir("", "dockerfile-path")
		if err != nil {
			t.Errorf("failed to create tmpdir: %v", err)
			continue
		}
		absoluteDockerfilePath := filepath.Join(buildDir, test.contextDir, test.dockerfilePath)
		dockerfileContent := "FROM openshift/origin-base"
		if err = os.MkdirAll(filepath.Dir(absoluteDockerfilePath), os.FileMode(0750)); err != nil {
			t.Errorf("failed to create directory %s: %v", filepath.Dir(absoluteDockerfilePath), err)
			continue
		}
		if err = ioutil.WriteFile(absoluteDockerfilePath, []byte(dockerfileContent), os.FileMode(0644)); err != nil {
			t.Errorf("failed to write dockerfile to %s: %v", absoluteDockerfilePath, err)
			continue
		}

		build := &api.Build{
			Spec: api.BuildSpec{
				Source: api.BuildSource{
					Git: &api.GitBuildSource{
						URI: "http://github.com/openshift/origin.git",
					},
					ContextDir: test.contextDir,
				},
				Strategy: api.BuildStrategy{
					DockerStrategy: test.dockerStrategy,
				},
				Output: api.BuildOutput{
					To: &kapi.ObjectReference{
						Kind: "DockerImage",
						Name: "test/test-result:latest",
					},
				},
			},
		}

		dockerClient := &FakeDocker{
			buildImageFunc: func(opts docker.BuildImageOptions) error {
				if opts.Dockerfile != test.dockerfilePath {
					t.Errorf("Unexpected dockerfile path: %s (expected: %s)", opts.Dockerfile, test.dockerfilePath)
				}
				return nil
			},
		}

		dockerBuilder := &DockerBuilder{
			dockerClient: dockerClient,
			build:        build,
			gitClient:    git.NewRepository(),
			tar:          tar.New(),
		}

		// this will validate that the Dockerfile is readable
		// and append some labels to the Dockerfile
		if err = dockerBuilder.addBuildParameters(buildDir); err != nil {
			t.Errorf("failed to add build parameters: %v", err)
			continue
		}

		// check that our Dockerfile has been modified
		dockerfileData, err := ioutil.ReadFile(absoluteDockerfilePath)
		if err != nil {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
				aliases[parts[0]] = set
			}
			set.Insert(parts[1])
		}
	}

	// find and define build pipelines
	for _, k := range serviceOrder.List() {
		v := p.Configs[k]
		if len(v.Build) == 0 {
			continue
		}
		if _, ok := builds[v.Build]; ok {
			continue
		}
		var base, relative string
		for _, s := range bases {
			if !strings.HasPrefix(v.Build, s) {
				continue
			}
			base = s
			path, err := filepath.Rel(base, v.Build)
			if err != nil {
				return nil, fmt.Errorf("path is not relative to base: %v", err)
			}
			relative = path
			break
		}
		if len(base) == 0 {
			return nil, fmt.Errorf("build path outside of the compose file: %s", v.Build)
		}

		// if this is a Git repository, make the path relative
		if root, err := git.NewRepository().GetRootDir(base); err == nil {
			if relative, err = filepath.Rel(root, filepath.Join(base, relative)); err != nil {
				return nil, fmt.Errorf("unable to find relative path for Git repository: %v", err)
			}
			base = root
		}
		buildPath := filepath.Join(base, relative)

		// TODO: what if there is no origin for this repo?

		glog.V(4).Infof("compose service: %#v", v)
		repo, err := app.NewSourceRepositoryWithDockerfile(buildPath, "")
		if err != nil {
			errs = append(errs, err)
			continue
		}
		repo.BuildWithDocker()

		info := repo.Info()
		if info == nil || info.Dockerfile == nil {
			errs = append(errs, fmt.Errorf("unable to locate a Dockerfile in %s", v.Build))
			continue
		}
		node := info.Dockerfile.AST()
		baseImage := dockerfileutil.LastBaseImage(node)
		if len(baseImage) == 0 {
			errs = append(errs, fmt.Errorf("the Dockerfile in the repository %q has no FROM instruction", info.Path))
			continue
		}

		var ports []string
		for _, s := range v.Ports {
			container, _ := extractFirstPorts(s)

// NewSourceRefGenerator creates a new SourceRefGenerator
func NewSourceRefGenerator() *SourceRefGenerator {
	return &SourceRefGenerator{
		repository: git.NewRepository(),
	}
}

func (o *StartBuildOptions) Complete(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, args []string) error {
	o.In = in
	o.Out = out
	o.ErrOut = cmd.Out()
	o.Git = git.NewRepository()
	o.ClientConfig = f.OpenShiftClientConfig

	webhook := o.FromWebhook
	buildName := o.FromBuild
	fromFile := o.FromFile
	fromDir := o.FromDir
	fromRepo := o.FromRepo
	buildLogLevel := o.LogLevel

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 || len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0 {
			return kcmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments and all '--from-*' flags")
		}
		return nil

	case len(args) != 1 && len(buildName) == 0:
		return kcmdutil.UsageError(cmd, "Must pass a name of a build config or specify build name with '--from-build' flag")
	}

	o.AsBinary = len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}
	o.Client = client

	var (
		name     = buildName
		resource = buildapi.Resource("builds")
	)

	if len(name) == 0 && len(args) > 0 && len(args[0]) > 0 {
		mapper, _ := f.Object(false)
		resource, name, err = cmdutil.ResolveResource(buildapi.Resource("buildconfigs"), args[0], mapper)
		if err != nil {
			return err
		}
		switch resource {
		case buildapi.Resource("buildconfigs"):
			// no special handling required
		case buildapi.Resource("builds"):
			if len(o.ListWebhooks) == 0 {
				return fmt.Errorf("use --from-build to rerun your builds")
			}
		default:
			return fmt.Errorf("invalid resource provided: %v", resource)
		}
	}
	// when listing webhooks, allow --from-build to lookup a build config
	if resource == buildapi.Resource("builds") && len(o.ListWebhooks) > 0 {
		build, err := client.Builds(namespace).Get(name)
		if err != nil {
			return err
		}
		ref := build.Status.Config
		if ref == nil {
			return fmt.Errorf("the provided Build %q was not created from a BuildConfig and cannot have webhooks", name)
		}
		if len(ref.Namespace) > 0 {
			namespace = ref.Namespace
		}
		name = ref.Name
	}

	if len(name) == 0 {
		return fmt.Errorf("a resource name is required either as an argument or by using --from-build")
	}

	o.Namespace = namespace
	o.Name = name

	env, _, err := cmdutil.ParseEnv(o.Env, in)
	if err != nil {
		return err
	}
	if len(buildLogLevel) > 0 {
		env = append(env, kapi.EnvVar{Name: "BUILD_LOGLEVEL", Value: buildLogLevel})
	}
	o.EnvVar = env

	return nil
}

// RunStartBuild contains all the necessary functionality for the OpenShift cli start-build command
func RunStartBuild(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, envParams []string, args []string, webhooks util.StringFlag) error {
	webhook := cmdutil.GetFlagString(cmd, "from-webhook")
	buildName := cmdutil.GetFlagString(cmd, "from-build")
	follow := cmdutil.GetFlagBool(cmd, "follow")
	commit := cmdutil.GetFlagString(cmd, "commit")
	waitForComplete := cmdutil.GetFlagBool(cmd, "wait")
	fromFile := cmdutil.GetFlagString(cmd, "from-file")
	fromDir := cmdutil.GetFlagString(cmd, "from-dir")
	fromRepo := cmdutil.GetFlagString(cmd, "from-repo")
	buildLogLevel := cmdutil.GetFlagString(cmd, "build-loglevel")

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 || len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0 {
			return cmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments and all '--from-*' flags")
		}
		path := cmdutil.GetFlagString(cmd, "git-repository")
		postReceivePath := cmdutil.GetFlagString(cmd, "git-post-receive")
		repo := git.NewRepository()
		return RunStartBuildWebHook(f, out, webhook, path, postReceivePath, repo)
	case len(args) != 1 && len(buildName) == 0:
		return cmdutil.UsageError(cmd, "Must pass a name of a build config or specify build name with '--from-build' flag")
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	var (
		name     = buildName
		resource = "builds"
	)

	if len(name) == 0 && len(args) > 0 && len(args[0]) > 0 {
		mapper, _ := f.Object()
		resource, name, err = osutil.ResolveResource("buildconfigs", args[0], mapper)
		if err != nil {
			return err
		}
		switch resource {
		case "buildconfigs":
			// no special handling required
		case "builds":
			return fmt.Errorf("use --from-build to rerun your builds")
		default:
			return fmt.Errorf("invalid resource provided: %s", resource)
		}
	}
	if len(name) == 0 {
		return fmt.Errorf("a resource name is required either as an argument or by using --from-build")
	}

	if webhooks.Provided() {
		return RunListBuildWebHooks(f, out, cmd.Out(), name, resource, webhooks.String())
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}

	env, _, err := ParseEnv(envParams, in)
	if err != nil {
		return err
	}

	if len(buildLogLevel) > 0 {
		env = append(env, kapi.EnvVar{Name: "BUILD_LOGLEVEL", Value: buildLogLevel})
	}

	request := &buildapi.BuildRequest{
		ObjectMeta: kapi.ObjectMeta{Name: name},
	}
	if len(env) > 0 {
		request.Env = env
	}
	if len(commit) > 0 {
		request.Revision = &buildapi.SourceRevision{
			Type: buildapi.BuildSourceGit,
			Git: &buildapi.GitSourceRevision{
				Commit: commit,
			},
		}
	}

	git := git.NewRepository()

	var newBuild *buildapi.Build
	switch {
	case len(args) > 0 && (len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0):
		request := &buildapi.BinaryBuildRequestOptions{
			ObjectMeta: kapi.ObjectMeta{
				Name:      name,
				Namespace: namespace,
			},
			Commit: commit,
		}
		if newBuild, err = streamPathToBuild(git, in, cmd.Out(), client.BuildConfigs(namespace), fromDir, fromFile, fromRepo, request); err != nil {
//.........这里部分代码省略.........

func (o *StartBuildOptions) Complete(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, cmdFullName string, args []string) error {
	o.In = in
	o.Out = out
	o.ErrOut = cmd.OutOrStderr()
	o.Git = git.NewRepository()
	o.ClientConfig = f.OpenShiftClientConfig
	o.Mapper, _ = f.Object(false)

	webhook := o.FromWebhook
	buildName := o.FromBuild
	fromFile := o.FromFile
	fromDir := o.FromDir
	fromRepo := o.FromRepo
	buildLogLevel := o.LogLevel

	outputFormat := kcmdutil.GetFlagString(cmd, "output")
	if outputFormat != "name" && outputFormat != "" {
		return kcmdutil.UsageError(cmd, "Unsupported output format: %s", outputFormat)
	}
	o.ShortOutput = outputFormat == "name"

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 || len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0 {
			return kcmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments and all '--from-*' flags")
		}
		return nil

	case len(args) != 1 && len(buildName) == 0:
		return kcmdutil.UsageError(cmd, "Must pass a name of a build config or specify build name with '--from-build' flag.\nUse \"%s get bc\" to list all available build configs.", cmdFullName)
	}

	if len(buildName) != 0 && (len(fromFile) != 0 || len(fromDir) != 0 || len(fromRepo) != 0) {
		// TODO: we should support this, it should be possible to clone a build to run again with new uploaded artifacts.
		// Doing so requires introducing a new clonebinary endpoint.
		return kcmdutil.UsageError(cmd, "Cannot use '--from-build' flag with binary builds")
	}
	o.AsBinary = len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}
	o.Client = client

	var (
		name     = buildName
		resource = buildapi.Resource("builds")
	)

	if len(name) == 0 && len(args) > 0 && len(args[0]) > 0 {
		mapper, _ := f.Object(false)
		resource, name, err = cmdutil.ResolveResource(buildapi.Resource("buildconfigs"), args[0], mapper)
		if err != nil {
			return err
		}
		switch resource {
		case buildapi.Resource("buildconfigs"):
			// no special handling required
		case buildapi.Resource("builds"):
			if len(o.ListWebhooks) == 0 {
				return fmt.Errorf("use --from-build to rerun your builds")
			}
		default:
			return fmt.Errorf("invalid resource provided: %v", resource)
		}
	}
	// when listing webhooks, allow --from-build to lookup a build config
	if resource == buildapi.Resource("builds") && len(o.ListWebhooks) > 0 {
		build, err := client.Builds(namespace).Get(name)
		if err != nil {
			return err
		}
		ref := build.Status.Config
		if ref == nil {
			return fmt.Errorf("the provided Build %q was not created from a BuildConfig and cannot have webhooks", name)
		}
		if len(ref.Namespace) > 0 {
			namespace = ref.Namespace
		}
		name = ref.Name
	}

	if len(name) == 0 {
		return fmt.Errorf("a resource name is required either as an argument or by using --from-build")
	}

	o.Namespace = namespace
	o.Name = name

	env, _, err := cmdutil.ParseEnv(o.Env, in)
	if err != nil {
		return err
	}
	if len(buildLogLevel) > 0 {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		"\"OPENSHIFT_BUILD_COMMIT\"=\"commitid\"",
		// expected labels
		"\"io.openshift.build.commit.author\"=\"test user \\[email protected]\\u003e\"",
		"\"io.openshift.build.commit.date\"=\"date\"",
		"\"io.openshift.build.commit.id\"=\"commitid\"",
		"\"io.openshift.build.commit.ref\"=\"ref\"",
		"\"io.openshift.build.commit.message\"=\"message\"",
	}

	for _, test := range tests {
		buildDir, err := ioutil.TempDir(util.GetBaseDir(), "dockerfile-path")
		if err != nil {
			t.Errorf("failed to create tmpdir: %v", err)
			continue
		}
		absoluteDockerfilePath := filepath.Join(buildDir, test.contextDir, test.dockerfilePath)
		if err = os.MkdirAll(filepath.Dir(absoluteDockerfilePath), os.FileMode(0750)); err != nil {
			t.Errorf("failed to create directory %s: %v", filepath.Dir(absoluteDockerfilePath), err)
			continue
		}
		if err = ioutil.WriteFile(absoluteDockerfilePath, []byte(from), os.FileMode(0644)); err != nil {
			t.Errorf("failed to write dockerfile to %s: %v", absoluteDockerfilePath, err)
			continue
		}

		build := &api.Build{
			Spec: api.BuildSpec{
				CommonSpec: api.CommonSpec{
					Source: api.BuildSource{
						Git: &api.GitBuildSource{
							URI: "http://github.com/openshift/origin.git",
						},
						ContextDir: test.contextDir,
					},
					Strategy: api.BuildStrategy{
						DockerStrategy: test.dockerStrategy,
					},
					Output: api.BuildOutput{
						To: &kapi.ObjectReference{
							Kind: "DockerImage",
							Name: "test/test-result:latest",
						},
					},
				},
			},
		}
		build.Name = "name"
		build.Namespace = "namespace"

		sourceInfo := &git.SourceInfo{}
		sourceInfo.AuthorName = "test user"
		sourceInfo.AuthorEmail = "[email protected]"
		sourceInfo.Date = "date"
		sourceInfo.CommitID = "commitid"
		sourceInfo.Ref = "ref"
		sourceInfo.Message = "message"
		dockerClient := &FakeDocker{
			buildImageFunc: func(opts docker.BuildImageOptions) error {
				if opts.Dockerfile != test.dockerfilePath {
					t.Errorf("Unexpected dockerfile path: %s (expected: %s)", opts.Dockerfile, test.dockerfilePath)
				}
				return nil
			},
		}

		dockerBuilder := &DockerBuilder{
			dockerClient: dockerClient,
			build:        build,
			gitClient:    git.NewRepository(),
			tar:          tar.New(s2iutil.NewFileSystem()),
		}

		// this will validate that the Dockerfile is readable
		// and append some labels to the Dockerfile
		if err = dockerBuilder.addBuildParameters(buildDir, sourceInfo); err != nil {
			t.Errorf("failed to add build parameters: %v", err)
			continue
		}

		// check that our Dockerfile has been modified
		dockerfileData, err := ioutil.ReadFile(absoluteDockerfilePath)
		if err != nil {
			t.Errorf("failed to read dockerfile %s: %v", absoluteDockerfilePath, err)
			continue
		}
		for _, value := range expected {
			if !strings.Contains(string(dockerfileData), value) {
				t.Errorf("Updated Dockerfile content does not contain expected value:\n%s\n\nUpdated content:\n%s\n", value, string(dockerfileData))

			}
		}

		// check that the docker client is called with the right Dockerfile parameter
		if err = dockerBuilder.dockerBuild(buildDir, "", []api.SecretBuildSource{}); err != nil {
			t.Errorf("failed to build: %v", err)
			continue
		}
		os.RemoveAll(buildDir)
	}
}