Golang Client.KillContainer方法代码示例

// Wait blocks until the named container exits, returning the exit information.
func Wait(client dockerclient.Client, name string) (*dockerclient.ContainerInfo, error) {

	defer func() {
		client.StopContainer(name, 5)
		client.KillContainer(name, "9")
	}()

	for attempts := 0; attempts < 5; attempts++ {
		done := client.Wait(name)
		<-done

		info, err := client.InspectContainer(name)
		if err != nil {
			return nil, err
		}

		if !info.State.Running {
			return info, nil
		}

		log.Debugf("attempting to resume waiting after %d attempts.\n", attempts)
	}

	return nil, errors.New("reached maximum wait attempts")
}

func (e *engine) runJobNotify(r *Task, client dockerclient.Client) error {

	name := fmt.Sprintf("drone_build_%d_notify", r.Build.ID)

	defer func() {
		client.KillContainer(name, "9")
		client.RemoveContainer(name, true, true)
	}()

	// encode the build payload to write to stdin
	// when launching the build container
	in, err := encodeToLegacyFormat(r)
	if err != nil {
		log.Errorf("failure to marshal work. %s", err)
		return err
	}

	args := DefaultNotifyArgs
	args = append(args, "--")
	args = append(args, string(in))

	conf := &dockerclient.ContainerConfig{
		Image:      DefaultAgent,
		Entrypoint: DefaultEntrypoint,
		Cmd:        args,
		Env:        e.envs,
		HostConfig: dockerclient.HostConfig{
			Binds:            []string{"/var/run/docker.sock:/var/run/docker.sock"},
			MemorySwappiness: -1,
		},
		Volumes: map[string]struct{}{
			"/var/run/docker.sock": struct{}{},
		},
	}

	log.Infof("preparing container %s", name)
	info, err := docker.Run(client, conf, name)
	if err != nil {
		log.Errorf("Error starting notification container %s. %s", name, err)
	}

	// for debugging purposes we print a failed notification executions
	// output to the logs. Otherwise we have no way to troubleshoot failed
	// notifications. This is temporary code until I've come up with
	// a better solution.
	if info != nil && info.State.ExitCode != 0 && log.GetLevel() >= log.InfoLevel {
		var buf bytes.Buffer
		rc, err := client.ContainerLogs(name, docker.LogOpts)
		if err == nil {
			defer rc.Close()
			stdcopy.StdCopy(&buf, &buf, io.LimitReader(rc, 50000))
		}
		log.Infof("Notification container %s exited with %d", name, info.State.ExitCode)
		log.Infoln(buf.String())
	}

	return err
}

func Run(client dockerclient.Client, conf *dockerclient.ContainerConfig, auth *dockerclient.AuthConfig, pull bool, outw, errw io.Writer) (*dockerclient.ContainerInfo, error) {
	if outw == nil {
		outw = os.Stdout
	}
	if errw == nil {
		errw = os.Stdout
	}

	// fetches the container information.
	info, err := Start(client, conf, auth, pull)
	if err != nil {
		return nil, err
	}

	// ensures the container is always stopped
	// and ready to be removed.
	defer func() {
		client.StopContainer(info.Id, 5)
		client.KillContainer(info.Id, "9")
	}()

	// channel listening for errors while the
	// container is running async.
	errc := make(chan error, 1)
	infoc := make(chan *dockerclient.ContainerInfo, 1)
	go func() {

		// blocks and waits for the container to finish
		// by streaming the logs (to /dev/null). Ideally
		// we could use the `wait` function instead
		rc, err := client.ContainerLogs(info.Id, logOptsTail)
		if err != nil {
			log.Errorf("Error tailing %s. %s\n", conf.Image, err)
			errc <- err
			return
		}
		defer rc.Close()
		StdCopy(outw, errw, rc)

		// fetches the container information
		info, err := client.InspectContainer(info.Id)
		if err != nil {
			log.Errorf("Error getting exit code for %s. %s\n", conf.Image, err)
			errc <- err
			return
		}
		infoc <- info
	}()

	select {
	case info := <-infoc:
		return info, nil
	case err := <-errc:
		return info, err
	}
}

// Wait blocks until the named container exits, returning the exit information.
func Wait(client dockerclient.Client, name string) (*dockerclient.ContainerInfo, error) {

	defer func() {
		client.StopContainer(name, 5)
		client.KillContainer(name, "9")
	}()

	errc := make(chan error, 1)
	infoc := make(chan *dockerclient.ContainerInfo, 1)
	go func() {

		// blocks and waits for the container to finish
		// by streaming the logs (to /dev/null). Ideally
		// we could use the `wait` function instead
		rc, err := client.ContainerLogs(name, LogOptsTail)
		if err != nil {
			errc <- err
			return
		}
		io.Copy(ioutil.Discard, rc)
		rc.Close()

		info, err := client.InspectContainer(name)
		if err != nil {
			errc <- err
			return
		}
		infoc <- info
	}()

	select {
	case info := <-infoc:
		return info, nil
	case err := <-errc:
		return nil, err
	}
}

func (e *engine) runJob(c context.Context, r *Task, updater *updater, client dockerclient.Client) error {

	name := fmt.Sprintf("drone_build_%d_job_%d", r.Build.ID, r.Job.ID)

	defer func() {
		if r.Job.Status == model.StatusRunning {
			r.Job.Status = model.StatusError
			r.Job.Finished = time.Now().UTC().Unix()
			r.Job.ExitCode = 255
		}
		if r.Job.Status == model.StatusPending {
			r.Job.Status = model.StatusError
			r.Job.Started = time.Now().UTC().Unix()
			r.Job.Finished = time.Now().UTC().Unix()
			r.Job.ExitCode = 255
		}
		updater.SetJob(c, r)

		client.KillContainer(name, "9")
		client.RemoveContainer(name, true, true)
	}()

	// marks the task as running
	r.Job.Status = model.StatusRunning
	r.Job.Started = time.Now().UTC().Unix()

	// encode the build payload to write to stdin
	// when launching the build container
	in, err := encodeToLegacyFormat(r)
	if err != nil {
		log.Errorf("failure to marshal work. %s", err)
		return err
	}

	// CREATE AND START BUILD
	args := DefaultBuildArgs
	if r.Build.Event == model.EventPull {
		args = DefaultPullRequestArgs
	}
	args = append(args, "--")
	args = append(args, string(in))

	conf := &dockerclient.ContainerConfig{
		Image:      DefaultAgent,
		Entrypoint: DefaultEntrypoint,
		Cmd:        args,
		Env:        e.envs,
		HostConfig: dockerclient.HostConfig{
			Binds: []string{"/var/run/docker.sock:/var/run/docker.sock"},
		},
		Volumes: map[string]struct{}{
			"/var/run/docker.sock": struct{}{},
		},
	}

	log.Infof("preparing container %s", name)
	client.PullImage(conf.Image, nil)

	_, err = docker.RunDaemon(client, conf, name)
	if err != nil {
		log.Errorf("error starting build container. %s", err)
		return err
	}

	// UPDATE STATUS

	err = updater.SetJob(c, r)
	if err != nil {
		log.Errorf("error updating job status as running. %s", err)
		return err
	}

	// WAIT FOR OUTPUT
	info, builderr := docker.Wait(client, name)

	switch {
	case info.State.ExitCode == 128:
		r.Job.ExitCode = info.State.ExitCode
		r.Job.Status = model.StatusKilled
	case info.State.ExitCode == 130:
		r.Job.ExitCode = info.State.ExitCode
		r.Job.Status = model.StatusKilled
	case builderr != nil:
		r.Job.Status = model.StatusError
	case info.State.ExitCode != 0:
		r.Job.ExitCode = info.State.ExitCode
		r.Job.Status = model.StatusFailure
	default:
		r.Job.Status = model.StatusSuccess
	}

	// send the logs to the datastore
	var buf bytes.Buffer
	rc, err := client.ContainerLogs(name, docker.LogOpts)
	if err != nil && builderr != nil {
		buf.WriteString("Error launching build")
		buf.WriteString(builderr.Error())
	} else if err != nil {
		buf.WriteString("Error launching build")
		buf.WriteString(err.Error())
//.........这里部分代码省略.........

func Run(client dockerclient.Client, conf *dockerclient.ContainerConfig, auth *dockerclient.AuthConfig, pull bool, outw, errw io.Writer) (*dockerclient.ContainerInfo, error) {
	if outw == nil {
		outw = os.Stdout
	}
	if errw == nil {
		errw = os.Stdout
	}

	// fetches the container information.
	info, err := Start(client, conf, auth, pull)
	if err != nil {
		return nil, err
	}

	// ensures the container is always stopped
	// and ready to be removed.
	defer func() {
		client.StopContainer(info.Id, 5)
		client.KillContainer(info.Id, "9")
	}()

	// channel listening for errors while the
	// container is running async.
	errc := make(chan error, 1)
	infoc := make(chan *dockerclient.ContainerInfo, 1)
	go func() {
		// options to fetch the stdout and stderr logs
		// by tailing the output.
		logOptsTail := &dockerclient.LogOptions{
			Follow: true,
			Stdout: true,
			Stderr: true,
		}

		// It's possible that the docker logs endpoint returns before the container
		// is done, we'll naively resume up to 5 times if when the logs unblocks
		// the container is still reported to be running.
		for attempts := 0; attempts < 5; attempts++ {
			if attempts > 0 {
				// When resuming the stream, only grab the last line when starting
				// the tailing.
				logOptsTail.Tail = 1
			}

			// blocks and waits for the container to finish
			// by streaming the logs (to /dev/null). Ideally
			// we could use the `wait` function instead
			rc, err := client.ContainerLogs(info.Id, logOptsTail)
			if err != nil {
				log.Errorf("Error tailing %s. %s\n", conf.Image, err)
				errc <- err
				return
			}
			defer rc.Close()

			_, err = StdCopy(outw, errw, rc)
			if err != nil {
				log.Errorf("Error streaming docker logs for %s. %s\n", conf.Image, err)
				errc <- err
				return
			}

			// fetches the container information
			info, err := client.InspectContainer(info.Id)
			if err != nil {
				log.Errorf("Error getting exit code for %s. %s\n", conf.Image, err)
				errc <- err
				return
			}

			if !info.State.Running {
				// The container is no longer running, there should be no more logs to tail.
				infoc <- info
				return
			}

			log.Debugf("Attempting to resume log tailing after %d attempts.\n", attempts)
		}

		errc <- errors.New("Maximum number of attempts made while tailing logs.")
	}()

	select {
	case info := <-infoc:
		return info, nil
	case err := <-errc:
		return info, err
	}
}

func Run(client dockerclient.Client, conf *dockerclient.ContainerConfig, auth *dockerclient.AuthConfig, pull bool, outw, errw io.Writer) (*dockerclient.ContainerInfo, error) {
	if outw == nil {
		outw = os.Stdout
	}
	if errw == nil {
		errw = os.Stdout
	}

	// fetches the container information.
	info, err := Start(client, conf, auth, pull)
	if err != nil {
		return nil, err
	}

	// ensures the container is always stopped
	// and ready to be removed.
	defer func() {
		client.StopContainer(info.Id, 5)
		client.KillContainer(info.Id, "9")
	}()

	// channel listening for errors while the
	// container is running async.
	errc := make(chan error, 1)
	infoc := make(chan *dockerclient.ContainerInfo, 1)
	go func() {
		// It's possible that the docker logs endpoint returns before the container
		// is done, we'll naively resume up to 5 times if when the logs unblocks
		// the container is still reported to be running.
		var total int64
		for attempts := 0; attempts < 5; attempts++ {

			// blocks and waits for the container to finish
			// by streaming the logs (to /dev/null). Ideally
			// we could use the `wait` function instead
			rc, err := client.ContainerLogs(info.Id, logOptsTail)
			if err != nil {
				log.Errorf("Error tailing %s. %s\n", conf.Image, err)
				errc <- err
				return
			}
			defer rc.Close()

			if total != 0 {
				// Discard off the total bytes we've received so far.
				// io.LimitReader returns EOF once it has read the specified number
				// of bytes as per https://golang.org/pkg/io/#LimitReader.
				r := io.LimitReader(rc, total)
				_, err := io.Copy(ioutil.Discard, r)
				if err != nil && err != io.EOF {
					log.Errorf("Error resuming streaming docker logs for %s. %s\n", conf.Image, err)
					errc <- err
					return
				}
			}

			rcv, err := StdCopy(outw, errw, rc)
			if err != nil {
				log.Errorf("Error streaming docker logs for %s. %s\n", conf.Image, err)
				errc <- err
				return
			}

			// fetches the container information
			info, err := client.InspectContainer(info.Id)
			if err != nil {
				log.Errorf("Error getting exit code for %s. %s\n", conf.Image, err)
				errc <- err
				return
			}

			if !info.State.Running {
				// The container is no longer running, there should be no more logs to tail.
				infoc <- info
				return
			}

			total += rcv
			log.Debugf("Attempting to resume log tailing after receiving %d bytes. Attempts %d.\n", total, attempts)
		}

		errc <- errors.New("Maximum number of attempts made while tailing logs.")
	}()

	select {
	case info := <-infoc:
		return info, nil
	case err := <-errc:
		return info, err
	}
}