Golang engine.Job類代碼示例

func setupUnixHttp(addr string, job *engine.Job) (*HttpServer, error) {
	r, err := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
	if err != nil {
		return nil, err
	}

	if err := syscall.Unlink(addr); err != nil && !os.IsNotExist(err) {
		return nil, err
	}
	mask := syscall.Umask(0777)
	defer syscall.Umask(mask)

	l, err := newListener("unix", addr, job.GetenvBool("BufferRequests"))
	if err != nil {
		return nil, err
	}

	if err := setSocketGroup(addr, job.Getenv("SocketGroup")); err != nil {
		return nil, err
	}

	if err := os.Chmod(addr, 0660); err != nil {
		return nil, err
	}

	return &HttpServer{&http.Server{Addr: addr, Handler: r}, l}, nil
}

func getImagesGet(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if vars == nil {
		return fmt.Errorf("Missing parameter")
	}
	if err := parseForm(r); err != nil {
		return err
	}
	if version.GreaterThan("1.0") {
		w.Header().Set("Content-Type", "application/x-tar")
	}
	var job *engine.Job
	if name, ok := vars["name"]; ok {
		job = eng.Job("image_export", name)
	} else {
		job = eng.Job("image_export", r.Form["names"]...)
	}
	job.Stdout.Add(w)
	return job.Run()
}

// ServeApi loops through all of the protocols sent in to docker and spawns
// off a go routine to setup a serving http.Server for each.
func ServeApi(job *engine.Job) engine.Status {
	if len(job.Args) == 0 {
		return job.Errorf("usage: %s PROTO://ADDR [PROTO://ADDR ...]", job.Name)
	}
	var (
		protoAddrs = job.Args
		chErrors   = make(chan error, len(protoAddrs))
	)
	activationLock = make(chan struct{})

	for _, protoAddr := range protoAddrs {
		protoAddrParts := strings.SplitN(protoAddr, "://", 2)
		if len(protoAddrParts) != 2 {
			return job.Errorf("usage: %s PROTO://ADDR [PROTO://ADDR ...]", job.Name)
		}
		go func() {
			log.Infof("Listening for HTTP on %s (%s)", protoAddrParts[0], protoAddrParts[1])
			srv, err := NewServer(protoAddrParts[0], protoAddrParts[1], job)
			if err != nil {
				chErrors <- err
				return
			}
			chErrors <- srv.Serve()
		}()
	}

	for i := 0; i < len(protoAddrs); i++ {
		err := <-chErrors
		if err != nil {
			return job.Error(err)
		}
	}

	return engine.StatusOK
}

// serveFd creates an http.Server and sets it up to serve given a socket activated
// argument.
func serveFd(addr string, job *engine.Job) error {
	r, err := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
	if err != nil {
		return err
	}

	ls, e := systemd.ListenFD(addr)
	if e != nil {
		return e
	}

	chErrors := make(chan error, len(ls))

	// We don't want to start serving on these sockets until the
	// daemon is initialized and installed. Otherwise required handlers
	// won't be ready.
	<-activationLock

	// Since ListenFD will return one or more sockets we have
	// to create a go func to spawn off multiple serves
	for i := range ls {
		listener := ls[i]
		go func() {
			httpSrv := http.Server{Handler: r}
			chErrors <- httpSrv.Serve(listener)
		}()
	}

	for i := 0; i < len(ls); i++ {
		err := <-chErrors
		if err != nil {
			return err
		}
	}

	return nil
}

// Auth contacts the public registry with the provided credentials,
// and returns OK if authentication was sucessful.
// It can be used to verify the validity of a client's credentials.
func (s *Service) Auth(job *engine.Job) engine.Status {
	var authConfig = new(AuthConfig)

	job.GetenvJson("authConfig", authConfig)

	if addr := authConfig.ServerAddress; addr != "" && addr != IndexServerAddress() {
		endpoint, err := NewEndpoint(addr, s.insecureRegistries)
		if err != nil {
			return job.Error(err)
		}
		if _, err := endpoint.Ping(); err != nil {
			return job.Error(err)
		}
		authConfig.ServerAddress = endpoint.String()
	}

	status, err := Login(authConfig, HTTPRequestFactory(nil))
	if err != nil {
		return job.Error(err)
	}
	job.Printf("%s\n", status)

	return engine.StatusOK
}

func ContainerConfigFromJob(job *engine.Job) *Config {
	config := &Config{
		Hostname:        job.Getenv("Hostname"),
		Domainname:      job.Getenv("Domainname"),
		User:            job.Getenv("User"),
		Memory:          job.GetenvInt64("Memory"),
		MemorySwap:      job.GetenvInt64("MemorySwap"),
		CpuShares:       job.GetenvInt64("CpuShares"),
		Cpuset:          job.Getenv("Cpuset"),
		AttachStdin:     job.GetenvBool("AttachStdin"),
		AttachStdout:    job.GetenvBool("AttachStdout"),
		AttachStderr:    job.GetenvBool("AttachStderr"),
		Tty:             job.GetenvBool("Tty"),
		OpenStdin:       job.GetenvBool("OpenStdin"),
		StdinOnce:       job.GetenvBool("StdinOnce"),
		Image:           job.Getenv("Image"),
		WorkingDir:      job.Getenv("WorkingDir"),
		NetworkDisabled: job.GetenvBool("NetworkDisabled"),
		MacAddress:      job.Getenv("MacAddress"),
	}
	job.GetenvJson("ExposedPorts", &config.ExposedPorts)
	job.GetenvJson("Volumes", &config.Volumes)
	config.SecurityOpt = job.GetenvList("SecurityOpt")
	if PortSpecs := job.GetenvList("PortSpecs"); PortSpecs != nil {
		config.PortSpecs = PortSpecs
	}
	if Env := job.GetenvList("Env"); Env != nil {
		config.Env = Env
	}
	if Cmd := job.GetenvList("Cmd"); Cmd != nil {
		config.Cmd = Cmd
	}
	if Entrypoint := job.GetenvList("Entrypoint"); Entrypoint != nil {
		config.Entrypoint = Entrypoint
	}
	return config
}

// Search queries the public registry for images matching the specified
// search terms, and returns the results.
//
// Argument syntax: search TERM
//
// Option environment:
//	'authConfig': json-encoded credentials to authenticate against the registry.
//		The search extends to images only accessible via the credentials.
//
//	'metaHeaders': extra HTTP headers to include in the request to the registry.
//		The headers should be passed as a json-encoded dictionary.
//
// Output:
//	Results are sent as a collection of structured messages (using engine.Table).
//	Each result is sent as a separate message.
//	Results are ordered by number of stars on the public registry.
func (s *Service) Search(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 {
		return job.Errorf("Usage: %s TERM", job.Name)
	}
	var (
		term        = job.Args[0]
		metaHeaders = map[string][]string{}
		authConfig  = &AuthConfig{}
	)
	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", metaHeaders)

	hostname, term, err := ResolveRepositoryName(term)
	if err != nil {
		return job.Error(err)
	}

	endpoint, err := NewEndpoint(hostname, s.insecureRegistries)
	if err != nil {
		return job.Error(err)
	}
	r, err := NewSession(authConfig, HTTPRequestFactory(metaHeaders), endpoint, true)
	if err != nil {
		return job.Error(err)
	}
	results, err := r.SearchRepositories(term)
	if err != nil {
		return job.Error(err)
	}
	outs := engine.NewTable("star_count", 0)
	for _, result := range results.Results {
		out := &engine.Env{}
		out.Import(result)
		outs.Add(out)
	}
	outs.ReverseSort()
	if _, err := outs.WriteListTo(job.Stdout); err != nil {
		return job.Error(err)
	}
	return engine.StatusOK
}

// Creates an image from Pull or from Import
func postImagesCreate(eng *engine.Engine, 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")
		job   *engine.Job
	)
	authEncoded := r.Header.Get("X-Registry-Auth")
	authConfig := &registry.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 = &registry.AuthConfig{}
		}
	}
	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
			}
		}
		job = eng.Job("pull", image, tag)
		job.SetenvBool("parallel", version.GreaterThan("1.3"))
		job.SetenvJson("metaHeaders", metaHeaders)
		job.SetenvJson("authConfig", authConfig)
	} else { //import
		if tag == "" {
			repo, tag = parsers.ParseRepositoryTag(repo)
		}
		job = eng.Job("import", r.Form.Get("fromSrc"), repo, tag)
		job.Stdin.Add(r.Body)
	}

	if version.GreaterThan("1.0") {
		job.SetenvBool("json", true)
		streamJSON(job, w, true)
	} else {
		job.Stdout.Add(utils.NewWriteFlusher(w))
	}
	if err := job.Run(); err != nil {
		if !job.Stdout.Used() {
			return err
		}
		sf := utils.NewStreamFormatter(version.GreaterThan("1.0"))
		w.Write(sf.FormatError(err))
	}

	return nil
}

func setupTcpHttp(addr string, job *engine.Job) (*HttpServer, error) {
	if !strings.HasPrefix(addr, "127.0.0.1") && !job.GetenvBool("TlsVerify") {
		log.Infof("/!\\ DON'T BIND ON ANOTHER IP ADDRESS THAN 127.0.0.1 IF YOU DON'T KNOW WHAT YOU'RE DOING /!\\")
	}

	r, err := createRouter(job.Eng, job.GetenvBool("Logging"), job.GetenvBool("EnableCors"), job.Getenv("Version"))
	if err != nil {
		return nil, err
	}

	l, err := newListener("tcp", addr, job.GetenvBool("BufferRequests"))
	if err != nil {
		return nil, err
	}

	if job.GetenvBool("Tls") || job.GetenvBool("TlsVerify") {
		var tlsCa string
		if job.GetenvBool("TlsVerify") {
			tlsCa = job.Getenv("TlsCa")
		}
		l, err = setupTls(job.Getenv("TlsCert"), job.Getenv("TlsKey"), tlsCa, l)
		if err != nil {
			return nil, err
		}
	}
	return &HttpServer{&http.Server{Addr: addr, Handler: r}, l}, nil
}