Golang exec.Version函数代码示例

func (d *JavaDriver) Open(ctx *ExecContext, handleID string) (DriverHandle, error) {
	id := &javaId{}
	if err := json.Unmarshal([]byte(handleID), id); err != nil {
		return nil, fmt.Errorf("Failed to parse handle '%s': %v", handleID, err)
	}

	pluginConfig := &plugin.ClientConfig{
		Reattach: id.PluginConfig.PluginConfig(),
	}
	exec, pluginClient, err := createExecutor(pluginConfig, d.config.LogOutput, d.config)
	if err != nil {
		merrs := new(multierror.Error)
		merrs.Errors = append(merrs.Errors, err)
		d.logger.Println("[ERR] driver.java: error connecting to plugin so destroying plugin pid and user pid")
		if e := destroyPlugin(id.PluginConfig.Pid, id.UserPid); e != nil {
			merrs.Errors = append(merrs.Errors, fmt.Errorf("error destroying plugin and userpid: %v", e))
		}
		if id.IsolationConfig != nil {
			isoConf := id.IsolationConfig
			ePid := pluginConfig.Reattach.Pid
			if e := executor.DestroyCgroup(isoConf.Cgroup, isoConf.CgroupPaths, ePid); e != nil {
				merrs.Errors = append(merrs.Errors, fmt.Errorf("destroying cgroup failed: %v", e))
			}
		}
		if e := ctx.AllocDir.UnmountAll(); e != nil {
			merrs.Errors = append(merrs.Errors, e)
		}

		return nil, fmt.Errorf("error connecting to plugin: %v", merrs.ErrorOrNil())
	}

	ver, _ := exec.Version()
	d.logger.Printf("[DEBUG] driver.java: version of executor: %v", ver.Version)

	// Return a driver handle
	h := &javaHandle{
		pluginClient:    pluginClient,
		executor:        exec,
		userPid:         id.UserPid,
		isolationConfig: id.IsolationConfig,
		taskDir:         id.TaskDir,
		allocDir:        id.AllocDir,
		logger:          d.logger,
		version:         id.Version,
		killTimeout:     id.KillTimeout,
		maxKillTimeout:  id.MaxKillTimeout,
		doneCh:          make(chan struct{}),
		waitCh:          make(chan *cstructs.WaitResult, 1),
	}
	if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil {
		d.logger.Printf("[ERR] driver.java: error registering services with consul: %v", err)
	}

	go h.run()
	return h, nil
}

func (d *RktDriver) Open(ctx *ExecContext, handleID string) (DriverHandle, error) {
	// Parse the handle
	pidBytes := []byte(strings.TrimPrefix(handleID, "Rkt:"))
	id := &rktPID{}
	if err := json.Unmarshal(pidBytes, id); err != nil {
		return nil, fmt.Errorf("failed to parse Rkt handle '%s': %v", handleID, err)
	}

	pluginConfig := &plugin.ClientConfig{
		Reattach: id.PluginConfig.PluginConfig(),
	}
	exec, pluginClient, err := createExecutor(pluginConfig, d.config.LogOutput, d.config)
	if err != nil {
		d.logger.Println("[ERROR] driver.rkt: error connecting to plugin so destroying plugin pid and user pid")
		if e := destroyPlugin(id.PluginConfig.Pid, id.ExecutorPid); e != nil {
			d.logger.Printf("[ERROR] driver.rkt: error destroying plugin and executor pid: %v", e)
		}
		return nil, fmt.Errorf("error connecting to plugin: %v", err)
	}

	ver, _ := exec.Version()
	d.logger.Printf("[DEBUG] driver.rkt: version of executor: %v", ver.Version)
	// Return a driver handle
	h := &rktHandle{
		pluginClient:   pluginClient,
		executorPid:    id.ExecutorPid,
		allocDir:       id.AllocDir,
		executor:       exec,
		logger:         d.logger,
		killTimeout:    id.KillTimeout,
		maxKillTimeout: id.MaxKillTimeout,
		doneCh:         make(chan struct{}),
		waitCh:         make(chan *cstructs.WaitResult, 1),
	}
	if h.executor.SyncServices(consulContext(d.config, "")); err != nil {
		h.logger.Printf("[ERR] driver.rkt: error registering services: %v", err)
	}
	go h.run()
	return h, nil
}

func (d *QemuDriver) Open(ctx *ExecContext, handleID string) (DriverHandle, error) {
	id := &qemuId{}
	if err := json.Unmarshal([]byte(handleID), id); err != nil {
		return nil, fmt.Errorf("Failed to parse handle '%s': %v", handleID, err)
	}

	pluginConfig := &plugin.ClientConfig{
		Reattach: id.PluginConfig.PluginConfig(),
	}

	exec, pluginClient, err := createExecutor(pluginConfig, d.config.LogOutput, d.config)
	if err != nil {
		d.logger.Println("[ERR] driver.qemu: error connecting to plugin so destroying plugin pid and user pid")
		if e := destroyPlugin(id.PluginConfig.Pid, id.UserPid); e != nil {
			d.logger.Printf("[ERR] driver.qemu: error destroying plugin and userpid: %v", e)
		}
		return nil, fmt.Errorf("error connecting to plugin: %v", err)
	}

	ver, _ := exec.Version()
	d.logger.Printf("[DEBUG] driver.qemu: version of executor: %v", ver.Version)
	// Return a driver handle
	h := &qemuHandle{
		pluginClient:   pluginClient,
		executor:       exec,
		userPid:        id.UserPid,
		allocDir:       id.AllocDir,
		logger:         d.logger,
		killTimeout:    id.KillTimeout,
		maxKillTimeout: id.MaxKillTimeout,
		version:        id.Version,
		doneCh:         make(chan struct{}),
		waitCh:         make(chan *dstructs.WaitResult, 1),
	}
	if err := h.executor.SyncServices(consulContext(d.config, "")); err != nil {
		h.logger.Printf("[ERR] driver.qemu: error registering services: %v", err)
	}
	go h.run()
	return h, nil
}

func (d *DockerDriver) Open(ctx *ExecContext, handleID string) (DriverHandle, error) {
	cleanupImage := d.config.ReadBoolDefault("docker.cleanup.image", true)

	// Split the handle
	pidBytes := []byte(strings.TrimPrefix(handleID, "DOCKER:"))
	pid := &dockerPID{}
	if err := json.Unmarshal(pidBytes, pid); err != nil {
		return nil, fmt.Errorf("Failed to parse handle '%s': %v", handleID, err)
	}
	d.logger.Printf("[INFO] driver.docker: re-attaching to docker process: %s", pid.ContainerID)
	d.logger.Printf("[DEBUG] driver.docker: re-attached to handle: %s", handleID)
	pluginConfig := &plugin.ClientConfig{
		Reattach: pid.PluginConfig.PluginConfig(),
	}

	client, waitClient, err := d.dockerClients()
	if err != nil {
		return nil, fmt.Errorf("Failed to connect to docker daemon: %s", err)
	}

	// Look for a running container with this ID
	containers, err := client.ListContainers(docker.ListContainersOptions{
		Filters: map[string][]string{
			"id": []string{pid.ContainerID},
		},
	})
	if err != nil {
		return nil, fmt.Errorf("Failed to query for container %s: %v", pid.ContainerID, err)
	}

	found := false
	for _, container := range containers {
		if container.ID == pid.ContainerID {
			found = true
		}
	}
	if !found {
		return nil, fmt.Errorf("Failed to find container %s: %v", pid.ContainerID, err)
	}
	exec, pluginClient, err := createExecutor(pluginConfig, d.config.LogOutput, d.config)
	if err != nil {
		d.logger.Printf("[INFO] driver.docker: couldn't re-attach to the plugin process: %v", err)
		if e := client.StopContainer(pid.ContainerID, uint(pid.KillTimeout*time.Second)); e != nil {
			d.logger.Printf("[DEBUG] driver.docker: couldn't stop container: %v", e)
		}
		return nil, err
	}

	ver, _ := exec.Version()
	d.logger.Printf("[DEBUG] driver.docker: version of executor: %v", ver.Version)

	// Return a driver handle
	h := &DockerHandle{
		client:         client,
		waitClient:     waitClient,
		executor:       exec,
		pluginClient:   pluginClient,
		cleanupImage:   cleanupImage,
		logger:         d.logger,
		imageID:        pid.ImageID,
		containerID:    pid.ContainerID,
		version:        pid.Version,
		killTimeout:    pid.KillTimeout,
		maxKillTimeout: pid.MaxKillTimeout,
		doneCh:         make(chan bool),
		waitCh:         make(chan *dstructs.WaitResult, 1),
	}
	if err := exec.SyncServices(consulContext(d.config, pid.ContainerID)); err != nil {
		h.logger.Printf("[ERR] driver.docker: error registering services with consul: %v", err)
	}

	go h.collectStats()
	go h.run()
	return h, nil
}