Golang go-dockerclient.CreateContainerOptions類代碼示例

func CreateContainer(containerName, image, domain string, portsToMap []Port, environmentVars map[string]string) (*docker.Container, error) {
	cfg := &docker.Config{}
	cfg.Image = image
	cfg.Hostname = containerName
	cfg.Domainname = domain

	var e struct{}
	exposedPorts := make(map[docker.Port]struct{})
	for _, p := range portsToMap {
		prt := strconv.FormatUint(p.Private, 10) + "/" + p.Type
		exposedPorts[docker.Port(prt)] = e
		fmt.Printf("Exposing %s\n", prt)
	}
	cfg.ExposedPorts = exposedPorts

	envStrs := make([]string, 0, 10)
	for k, v := range environmentVars {
		envStrs = append(envStrs, k+"="+v)
	}
	cfg.Env = envStrs

	hostCfg := &docker.HostConfig{}
	hostCfg.PublishAllPorts = false
	hostCfg.Privileged = false

	hostPorts := make(map[docker.Port][]docker.PortBinding)
	for _, p := range portsToMap {
		prt := strconv.FormatUint(p.Private, 10) + "/" + p.Type
		bindings := make([]docker.PortBinding, 0, 4)
		bindings = append(bindings, docker.PortBinding{HostIP: "", HostPort: strconv.FormatUint(p.Public, 10)})
		fmt.Printf("Binding %s to %s\n", prt, bindings[0])
		hostPorts[docker.Port(prt)] = bindings
	}
	hostCfg.PortBindings = hostPorts

	opts := docker.CreateContainerOptions{}
	opts.Config = cfg
	opts.Name = containerName
	opts.HostConfig = hostCfg

	json, _ := data.PrettyPrint(opts)
	fmt.Printf("create options: %s\n", string(json))

	container, err := client.CreateContainer(opts)

	if err != nil {
		fmt.Fprintf(os.Stderr, "Error creating container: %s\n", err.Error())
	} else {
		fmt.Printf("Container created: %s\n", container.ID)
	}

	return container, err
}

// DockerRun perform a docker run
func DockerRun(req *DockerRunRequest) (DockerRunResponse, error) {
	response := DockerRunResponse{}
	//logit.Info.Println("DockerRun called")
	swarmURL := os.Getenv("SWARM_MANAGER_URL")
	if swarmURL == "" {
		logit.Error.Println("SWARM_MANAGER_URL not set")
		return response, errors.New("SWARM_MANAGER_URL not set")
	}

	var envvars []string
	var i = 0
	if req.EnvVars != nil {
		envvars = make([]string, len(req.EnvVars)+1)
		for k, v := range req.EnvVars {
			envvars[i] = k + "=" + v
			i++
		}
	} else {
		envvars = make([]string, 1)
	}

	if req.Profile == "" {
		return response, errors.New("Profile was empty and should not be")
	}

	//typical case is to always add the profile constraint env var
	//like SM, MED, LG, however in the case of a restore job, we
	//use a hard constraint of the host ipaddress to pin
	//the restored container to the same host as where the backup
	//is stored
	if req.IPAddress != "" {
		envvars[i] = "constraint:host==~" + req.IPAddress
	} else {
		envvars[i] = "constraint:profile==~" + req.Profile
	}

	docker, err := dockerapi.NewClient(swarmURL)
	if err != nil {
		logit.Error.Println(err.Error())
		return response, err
	}

	options := dockerapi.CreateContainerOptions{}
	config := dockerapi.Config{}
	config.Hostname = req.ContainerName
	options.Config = &config
	hostConfig := dockerapi.HostConfig{}
	options.HostConfig = &hostConfig
	options.Name = req.ContainerName
	options.Config.Env = envvars
	options.Config.Image = "crunchydata/" + req.Image
	//logit.Info.Println("swarmapi using " + options.Config.Image + " as the image name")
	options.Config.Volumes = make(map[string]struct{})

	//TODO figure out cpu shares and memory settings, these are different
	//than what I was using before due to me using the docker api directly
	//with this swarm implementation...use the defaults for now

	//options.HostConfig.CPUShares, err = strconv.ParseInt(req.CPU, 0, 64)
	//if err != nil {
	//logit.Error.Println(err.Error())
	//return response, err
	//}
	//options.HostConfig.Memory = req.MEM

	options.HostConfig.Binds = make([]string, 3)
	options.HostConfig.Binds[0] = req.PGDataPath + ":/pgdata"
	options.HostConfig.Binds[1] = "/var/cpm/data/keys:/keys"
	options.HostConfig.Binds[2] = "/var/cpm/config:/syslogconfig"

	container, err3 := docker.CreateContainer(options)
	if err3 != nil {
		logit.Error.Println(err3.Error())
		return response, err3
	}

	var startResponse DockerStartResponse
	startRequest := DockerStartRequest{}
	startRequest.ContainerName = req.ContainerName
	startResponse, err = DockerStart(&startRequest)
	if err != nil {
		logit.Error.Println(err.Error())
		return response, err
	}
	logit.Info.Println(startResponse.Output)
	//cmd := exec.Command(req.CommandPath, req.PGDataPath, req.ContainerName,
	//req.Image, req.CPU, req.MEM, allEnvVars)

	response.ID = container.ID
	return response, nil
}

// RunContainer creates and starts a container using the image specified in the options with the ability
// to stream input or output
func (d *stiDocker) RunContainer(opts RunContainerOptions) (err error) {
	// get info about the specified image
	image := getImageName(opts.Image)
	var imageMetadata *docker.Image
	if opts.PullImage {
		imageMetadata, err = d.CheckAndPullImage(image)
	} else {
		imageMetadata, err = d.client.InspectImage(image)
	}
	if err != nil {
		glog.Errorf("Unable to get image metadata for %s: %v", image, err)
		return err
	}

	config := docker.Config{
		Image: image,
		User:  opts.User,
	}

	config, tarDestination := runContainerTar(opts, config, imageMetadata)

	if opts.Env != nil {
		config.Env = opts.Env
	}
	if opts.Stdin != nil {
		config.OpenStdin = true
		config.StdinOnce = true
	}
	if opts.Stdout != nil {
		config.AttachStdout = true
	}

	glog.V(2).Infof("Creating container using config: %+v", config)
	ccopts := docker.CreateContainerOptions{Name: "", Config: &config}
	if opts.TargetImage {
		ccopts.HostConfig = &docker.HostConfig{PublishAllPorts: true, NetworkMode: opts.NetworkMode}
	} else if opts.NetworkMode != "" {
		ccopts.HostConfig = &docker.HostConfig{NetworkMode: opts.NetworkMode}
	}

	container, err := d.client.CreateContainer(ccopts)
	if err != nil {
		return err
	}
	defer d.RemoveContainer(container.ID)

	glog.V(2).Infof("Attaching to container")
	// creating / piping the channels in runContainerAttach lead to unintended hangs
	attached := make(chan struct{})
	wg := runContainerAttach(attached, container, opts, d)
	attached <- <-attached

	glog.V(2).Infof("Starting container")
	if err = d.client.StartContainer(container.ID, nil); err != nil {
		return err
	}
	if opts.OnStart != nil {
		if err = opts.OnStart(); err != nil {
			return err
		}
	}

	if opts.TargetImage {

		runContainerDockerRun(container, d, image)

	} else {
		werr := runContainerWait(wg, d, container)
		if werr != nil {
			return werr
		}
	}

	if opts.PostExec != nil {
		glog.V(2).Infof("Invoking postExecution function")
		if err = opts.PostExec.PostExecute(container.ID, tarDestination); err != nil {
			return err
		}
	}
	return nil
}

//
// Start a docker container, and create a connection to /attach to it and send
// and receive RPC commands.
//
func (d *Client) Start() (err error) {

	path := os.Getenv("DOCKER_CERT_PATH")
	if path != "" {
		ca := fmt.Sprintf("%s/ca.pem", path)
		cert := fmt.Sprintf("%s/cert.pem", path)
		key := fmt.Sprintf("%s/key.pem", path)
		d.dockerClient, err = docker.NewTLSClient(d.endpoint, cert, key, ca)
	} else {
		d.dockerClient, err = docker.NewClient(d.endpoint)
	}

	if err != nil {
		return err
	}

	defaultConfig := &docker.Config{
		OpenStdin: true,
		Image:     d.dockerImage,
	}

	defaultHostConfig := &docker.HostConfig{}

	opts := docker.CreateContainerOptions{
		Config:     defaultConfig,
		HostConfig: defaultHostConfig,
	}

	if d.name != "" {
		opts.Name = d.name
	}

	c, err := d.dockerClient.CreateContainer(opts)

	if err != nil {
		return err
	}

	d.ID = c.ID
	err = d.dockerClient.StartContainer(c.ID, defaultHostConfig)

	if err != nil {
		return err
	}

	attachOpts := docker.AttachToContainerOptions{
		Container: d.ID,
		Stdout:    true,
		Stdin:     true,
		Stderr:    true,
		Stream:    true,
	}

	err = d.AttachStreamingContainer(attachOpts)

	if err != nil {
		return err
	}

	pipes := &dockerPipes{
		d.clientConn,
		&d.stdErrBuf,
		0,
		0,
	}

	d.rpcClient = rpc.NewClientWithCodec(jsonrpc.NewClientCodec(pipes))

	return nil
}

func resourceDockerContainerCreate(d *schema.ResourceData, meta interface{}) error {
	var err error
	client := meta.(*dc.Client)

	var data Data
	if err := fetchLocalImages(&data, client); err != nil {
		return err
	}

	image := d.Get("image").(string)
	if _, ok := data.DockerImages[image]; !ok {
		if _, ok := data.DockerImages[image+":latest"]; !ok {
			return fmt.Errorf("Unable to find image %s", image)
		}
		image = image + ":latest"
	}

	// The awesome, wonderful, splendiferous, sensical
	// Docker API now lets you specify a HostConfig in
	// CreateContainerOptions, but in my testing it still only
	// actually applies HostConfig options set in StartContainer.
	// How cool is that?
	createOpts := dc.CreateContainerOptions{
		Name: d.Get("name").(string),
		Config: &dc.Config{
			Image:      image,
			Hostname:   d.Get("hostname").(string),
			Domainname: d.Get("domainname").(string),
		},
	}

	if v, ok := d.GetOk("env"); ok {
		createOpts.Config.Env = stringSetToStringSlice(v.(*schema.Set))
	}

	if v, ok := d.GetOk("command"); ok {
		createOpts.Config.Cmd = stringListToStringSlice(v.([]interface{}))
	}

	if v, ok := d.GetOk("entrypoint"); ok {
		createOpts.Config.Entrypoint = stringListToStringSlice(v.([]interface{}))
	}

	exposedPorts := map[dc.Port]struct{}{}
	portBindings := map[dc.Port][]dc.PortBinding{}

	if v, ok := d.GetOk("ports"); ok {
		exposedPorts, portBindings = portSetToDockerPorts(v.(*schema.Set))
	}
	if len(exposedPorts) != 0 {
		createOpts.Config.ExposedPorts = exposedPorts
	}

	extraHosts := []string{}
	if v, ok := d.GetOk("host"); ok {
		extraHosts = extraHostsSetToDockerExtraHosts(v.(*schema.Set))
	}

	volumes := map[string]struct{}{}
	binds := []string{}
	volumesFrom := []string{}

	if v, ok := d.GetOk("volumes"); ok {
		volumes, binds, volumesFrom, err = volumeSetToDockerVolumes(v.(*schema.Set))
		if err != nil {
			return fmt.Errorf("Unable to parse volumes: %s", err)
		}
	}
	if len(volumes) != 0 {
		createOpts.Config.Volumes = volumes
	}

	if v, ok := d.GetOk("labels"); ok {
		createOpts.Config.Labels = mapTypeMapValsToString(v.(map[string]interface{}))
	}

	hostConfig := &dc.HostConfig{
		Privileged:      d.Get("privileged").(bool),
		PublishAllPorts: d.Get("publish_all_ports").(bool),
		RestartPolicy: dc.RestartPolicy{
			Name:              d.Get("restart").(string),
			MaximumRetryCount: d.Get("max_retry_count").(int),
		},
		LogConfig: dc.LogConfig{
			Type: d.Get("log_driver").(string),
		},
	}

	if len(portBindings) != 0 {
		hostConfig.PortBindings = portBindings
	}
	if len(extraHosts) != 0 {
		hostConfig.ExtraHosts = extraHosts
	}
	if len(binds) != 0 {
		hostConfig.Binds = binds
	}
	if len(volumesFrom) != 0 {
		hostConfig.VolumesFrom = volumesFrom
	}
//.........這裏部分代碼省略.........

// Build is a helper method to perform a Docker build against the
// provided Docker client. It will load the image if not specified,
// create a container if one does not already exist, and start a
// container if the Dockerfile contains RUN commands. It will cleanup
// any containers it creates directly, and set the e.Image.ID field
// to the generated image.
func (e *ClientExecutor) Build(r io.Reader, args map[string]string) error {
	b := NewBuilder()
	b.Args = args

	if e.Excludes == nil {
		excludes, err := ParseDockerignore(e.Directory)
		if err != nil {
			return err
		}
		e.Excludes = append(excludes, ".dockerignore")
	}

	// TODO: check the Docker daemon version (1.20 is required for Upload)

	node, err := parser.Parse(r)
	if err != nil {
		return err
	}

	// identify the base image
	from, err := b.From(node)
	if err != nil {
		return err
	}
	// load the image
	if e.Image == nil {
		if from == NoBaseImageSpecifier {
			if runtime.GOOS == "windows" {
				return fmt.Errorf("building from scratch images is not supported")
			}
			from, err = e.CreateScratchImage()
			if err != nil {
				return fmt.Errorf("unable to create a scratch image for this build: %v", err)
			}
			defer e.CleanupImage(from)
		}
		glog.V(4).Infof("Retrieving image %q", from)
		e.Image, err = e.LoadImage(from)
		if err != nil {
			return err
		}
	}

	// update the builder with any information from the image, including ONBUILD
	// statements
	if err := b.FromImage(e.Image, node); err != nil {
		return err
	}

	b.RunConfig.Image = from
	e.LogFn("FROM %s", from)
	glog.V(4).Infof("step: FROM %s", from)

	var sharedMount string

	// create a container to execute in, if necessary
	mustStart := b.RequiresStart(node)
	if e.Container == nil {
		opts := docker.CreateContainerOptions{
			Config: &docker.Config{
				Image: from,
			},
		}
		if mustStart {
			// Transient mounts only make sense on images that will be running processes
			if len(e.TransientMounts) > 0 {
				volumeName, err := randSeq(imageSafeCharacters, 24)
				if err != nil {
					return err
				}
				v, err := e.Client.CreateVolume(docker.CreateVolumeOptions{Name: volumeName})
				if err != nil {
					return fmt.Errorf("unable to create volume to mount secrets: %v", err)
				}
				defer e.cleanupVolume(volumeName)
				sharedMount = v.Mountpoint
				opts.HostConfig = &docker.HostConfig{
					Binds: []string{sharedMount + ":/tmp/__temporarymount"},
				}
			}

			// TODO: windows support
			if len(e.Command) > 0 {
				opts.Config.Cmd = e.Command
				opts.Config.Entrypoint = nil
			} else {
				// TODO; replace me with a better default command
				opts.Config.Cmd = []string{"sleep 86400"}
				opts.Config.Entrypoint = []string{"/bin/sh", "-c"}
			}
		}
		if len(opts.Config.Cmd) == 0 {
			opts.Config.Entrypoint = []string{"/bin/sh", "-c", "# NOP"}
		}
//.........這裏部分代碼省略.........

// RunContainer creates and starts a container using the image specified in the options with the ability
// to stream input or output
func (d *stiDocker) RunContainer(opts RunContainerOptions) (err error) {
	// get info about the specified image
	image := getImageName(opts.Image)
	var imageMetadata *docker.Image
	if opts.PullImage {
		imageMetadata, err = d.CheckAndPullImage(image)
	} else {
		imageMetadata, err = d.client.InspectImage(image)
	}
	if err != nil {
		glog.Errorf("Unable to get image metadata for %s: %v", image, err)
		return err
	}

	config := docker.Config{
		Image: image,
	}

	config, tarDestination := runContainerTar(opts, config, imageMetadata)

	if opts.Env != nil {
		config.Env = opts.Env
	}
	if opts.Stdin != nil {
		config.OpenStdin = true
		config.StdinOnce = true
	}
	if opts.Stdout != nil {
		config.AttachStdout = true
	}

	glog.V(2).Infof("Creating container using config: %+v", config)
	ccopts := docker.CreateContainerOptions{Name: "", Config: &config}
	if opts.TargetImage {
		ccopts.HostConfig = &docker.HostConfig{PublishAllPorts: true}
	}
	container, err := d.client.CreateContainer(ccopts)
	if err != nil {
		return err
	}
	defer d.RemoveContainer(container.ID)

	glog.V(2).Infof("Attaching to container")
	// creating / piping the channels in runContainerAttachOne lead to unintended hangs
	attached := make(chan struct{})
	wg := runContainerAttachOne(attached, container, opts, d)
	attached <- <-attached

	// If attaching both stdin and stdout or stderr, attach stdout and stderr in
	// a second goroutine
	// TODO remove this goroutine when docker 1.4 will be in broad usage,
	// see: https://github.com/docker/docker/commit/f936a10d8048f471d115978472006e1b58a7c67d
	if opts.Stdin != nil && opts.Stdout != nil {
		// creating / piping the channels in runContainerAttachTwo lead to unintended hangs
		attached2 := make(chan struct{})
		runContainerAttachTwo(attached2, container, opts, d, wg)
		attached2 <- <-attached2
	}

	glog.V(2).Infof("Starting container")
	if err = d.client.StartContainer(container.ID, nil); err != nil {
		return err
	}
	if opts.OnStart != nil {
		if err = opts.OnStart(); err != nil {
			return err
		}
	}

	if opts.TargetImage {

		runContainerDockerRun(container, d, image)

	} else {
		werr := runContainerWait(wg, d, container)
		if werr != nil {
			return werr
		}
	}

	if opts.PostExec != nil {
		glog.V(2).Infof("Invoking postExecution function")
		if err = opts.PostExec.PostExecute(container.ID, tarDestination); err != nil {
			return err
		}
	}
	return nil
}