Golang Offer.GetSlaveId方法代碼示例

func (s *Scheduler) createExecutor(offer *mesos.Offer, tcpPort uint64, udpPort uint64) *mesos.ExecutorInfo {
	name := fmt.Sprintf("syslog-%s", offer.GetSlaveId().GetValue())
	id := fmt.Sprintf("%s-%s", name, uuid())

	uris := []*mesos.CommandInfo_URI{
		&mesos.CommandInfo_URI{
			Value:      proto.String(fmt.Sprintf("%s/resource/%s", Config.Api, Config.Executor)),
			Executable: proto.Bool(true),
		},
	}

	if Config.ProducerProperties != "" {
		uris = append(uris, &mesos.CommandInfo_URI{
			Value: proto.String(fmt.Sprintf("%s/resource/%s", Config.Api, Config.ProducerProperties)),
		})
	}

	command := fmt.Sprintf("./%s --log.level %s --tcp %d --udp %d --host %s", Config.Executor, Config.LogLevel, tcpPort, udpPort, offer.GetHostname())

	return &mesos.ExecutorInfo{
		ExecutorId: util.NewExecutorID(id),
		Name:       proto.String(name),
		Command: &mesos.CommandInfo{
			Value: proto.String(command),
			Uris:  uris,
		},
	}
}

func (ct *ConsumerTask) NewTaskInfo(offer *mesos.Offer) *mesos.TaskInfo {
	taskName := fmt.Sprintf("consumer-%s", ct.ID)
	taskId := &mesos.TaskID{
		Value: proto.String(fmt.Sprintf("%s-%s", taskName, uuid())),
	}

	data, err := json.Marshal(ct.Config)
	if err != nil {
		panic(err)
	}

	taskInfo := &mesos.TaskInfo{
		Name:     proto.String(taskName),
		TaskId:   taskId,
		SlaveId:  offer.GetSlaveId(),
		Executor: ct.createExecutor(),
		Resources: []*mesos.Resource{
			util.NewScalarResource("cpus", ct.Cpu),
			util.NewScalarResource("mem", ct.Mem),
		},
		Data: data,
	}

	return taskInfo
}

func (s *Scheduler) launchTask(driver scheduler.SchedulerDriver, offer *mesos.Offer) {
	taskName := fmt.Sprintf("statsd-kafka-%s", offer.GetHostname())
	taskId := &mesos.TaskID{
		Value: proto.String(fmt.Sprintf("%s-%s", taskName, uuid())),
	}

	data, err := json.Marshal(Config)
	if err != nil {
		panic(err) //shouldn't happen
	}
	Logger.Debugf("Task data: %s", string(data))

	task := &mesos.TaskInfo{
		Name:     proto.String(taskName),
		TaskId:   taskId,
		SlaveId:  offer.GetSlaveId(),
		Executor: s.createExecutor(offer.GetHostname()),
		Resources: []*mesos.Resource{
			util.NewScalarResource("cpus", Config.Cpus),
			util.NewScalarResource("mem", Config.Mem),
		},
		Data: data,
	}

	s.cluster.Add(offer.GetHostname(), task)

	driver.LaunchTasks([]*mesos.OfferID{offer.GetId()}, []*mesos.TaskInfo{task}, &mesos.Filters{RefuseSeconds: proto.Float64(1)})
}

// NodeProcurement updates t.Spec in preparation for the task to be launched on the
// slave associated with the offer.
func NodeProcurement(t *T, offer *mesos.Offer) error {
	t.Spec.SlaveID = offer.GetSlaveId().GetValue()
	t.Spec.AssignedSlave = offer.GetHostname()

	// hostname needs of the executor needs to match that of the offer, otherwise
	// the kubelet node status checker/updater is very unhappy
	setCommandArgument(t.executor, "--hostname-override", offer.GetHostname(), true)

	return nil
}

func (s *Scheduler) acceptOffer(driver scheduler.SchedulerDriver, offer *mesos.Offer) string {
	if s.cluster.Exists(offer.GetSlaveId().GetValue()) {
		return fmt.Sprintf("Server on slave %s is already running.", offer.GetSlaveId().GetValue())
	} else {
		declineReason := s.match(offer)
		if declineReason == "" {
			s.launchTask(driver, offer)
		}
		return declineReason
	}
}

// Fill the Spec in the T, should be called during k8s scheduling, before binding.
func (t *T) FillFromDetails(details *mesos.Offer) error {
	if details == nil {
		//programming error
		panic("offer details are nil")
	}

	// compute used resources
	cpu := mresource.PodCPULimit(&t.Pod)
	mem := mresource.PodMemLimit(&t.Pod)
	log.V(3).Infof("Recording offer(s) %s/%s against pod %v: cpu: %.2f, mem: %.2f MB", details.Id, t.Pod.Namespace, t.Pod.Name, cpu, mem)

	t.Spec = Spec{
		SlaveID:       details.GetSlaveId().GetValue(),
		AssignedSlave: details.GetHostname(),
		CPU:           cpu,
		Memory:        mem,
	}

	// fill in port mapping
	if mapping, err := t.mapper.Generate(t, details); err != nil {
		t.Reset()
		return err
	} else {
		ports := []uint64{}
		for _, entry := range mapping {
			ports = append(ports, entry.OfferPort)
		}
		t.Spec.PortMap = mapping
		t.Spec.Ports = ports
	}

	// hostname needs of the executor needs to match that of the offer, otherwise
	// the kubelet node status checker/updater is very unhappy
	const HOSTNAME_OVERRIDE_FLAG = "--hostname-override="
	hostname := details.GetHostname() // required field, non-empty
	hostnameOverride := HOSTNAME_OVERRIDE_FLAG + hostname

	argv := t.executor.Command.Arguments
	overwrite := false
	for i, arg := range argv {
		if strings.HasPrefix(arg, HOSTNAME_OVERRIDE_FLAG) {
			overwrite = true
			argv[i] = hostnameOverride
			break
		}
	}
	if !overwrite {
		t.executor.Command.Arguments = append(argv, hostnameOverride)
	}
	return nil
}

// Fill the Spec in the T, should be called during k8s scheduling,
// before binding.
// TODO(jdef): remove hardcoded values and make use of actual pod resource settings
func (t *T) FillFromDetails(details *mesos.Offer) error {
	if details == nil {
		//programming error
		panic("offer details are nil")
	}

	log.V(3).Infof("Recording offer(s) %v against pod %v", details.Id, t.Pod.Name)

	t.Spec = Spec{
		SlaveID: details.GetSlaveId().GetValue(),
		CPU:     DefaultContainerCpus,
		Memory:  DefaultContainerMem,
	}

	if mapping, err := t.mapper.Generate(t, details); err != nil {
		t.Reset()
		return err
	} else {
		ports := []uint64{}
		for _, entry := range mapping {
			ports = append(ports, entry.OfferPort)
		}
		t.Spec.PortMap = mapping
		t.Spec.Ports = ports
	}

	// hostname needs of the executor needs to match that of the offer, otherwise
	// the qinglet node status checker/updater is very unhappy
	const HOSTNAME_OVERRIDE_FLAG = "--hostname-override="
	hostname := details.GetHostname() // required field, non-empty
	hostnameOverride := HOSTNAME_OVERRIDE_FLAG + hostname

	argv := t.executor.Command.Arguments
	overwrite := false
	for i, arg := range argv {
		if strings.HasPrefix(arg, HOSTNAME_OVERRIDE_FLAG) {
			overwrite = true
			argv[i] = hostnameOverride
			break
		}
	}
	if !overwrite {
		t.executor.Command.Arguments = append(argv, hostnameOverride)
	}
	return nil
}

func (s *Scheduler) launchTask(driver scheduler.SchedulerDriver, offer *mesos.Offer) {
	taskName := fmt.Sprintf("syslog-%s", offer.GetSlaveId().GetValue())
	taskId := &mesos.TaskID{
		Value: proto.String(fmt.Sprintf("%s-%s", taskName, uuid())),
	}

	data, err := json.Marshal(Config)
	if err != nil {
		panic(err) //shouldn't happen
	}
	Logger.Debugf("Task data: %s", string(data))

	tcpPort := uint64(s.getPort(Config.TcpPort, offer, -1))
	udpPort := uint64(s.getPort(Config.UdpPort, offer, int(tcpPort)))

	task := &mesos.TaskInfo{
		Name:     proto.String(taskName),
		TaskId:   taskId,
		SlaveId:  offer.GetSlaveId(),
		Executor: s.createExecutor(offer, tcpPort, udpPort),
		Resources: []*mesos.Resource{
			util.NewScalarResource("cpus", Config.Cpus),
			util.NewScalarResource("mem", Config.Mem),
			util.NewRangesResource("ports", []*mesos.Value_Range{util.NewValueRange(tcpPort, tcpPort)}),
			util.NewRangesResource("ports", []*mesos.Value_Range{util.NewValueRange(udpPort, udpPort)}),
		},
		Data:   data,
		Labels: utils.StringToLabels(s.labels),
	}

	s.cluster.Add(offer.GetSlaveId().GetValue(), task)

	driver.LaunchTasks([]*mesos.OfferID{offer.GetId()}, []*mesos.TaskInfo{task}, &mesos.Filters{RefuseSeconds: proto.Float64(1)})
}

// NodeProcurement updates t.Spec in preparation for the task to be launched on the
// slave associated with the offer.
func NodeProcurement(t *T, offer *mesos.Offer) error {
	t.Spec.SlaveID = offer.GetSlaveId().GetValue()
	t.Spec.AssignedSlave = offer.GetHostname()

	// hostname needs of the executor needs to match that of the offer, otherwise
	// the kubelet node status checker/updater is very unhappy
	const HOSTNAME_OVERRIDE_FLAG = "--hostname-override="
	hostname := offer.GetHostname() // required field, non-empty
	hostnameOverride := HOSTNAME_OVERRIDE_FLAG + hostname

	argv := t.executor.Command.Arguments
	overwrite := false
	for i, arg := range argv {
		if strings.HasPrefix(arg, HOSTNAME_OVERRIDE_FLAG) {
			overwrite = true
			argv[i] = hostnameOverride
			break
		}
	}
	if !overwrite {
		t.executor.Command.Arguments = append(argv, hostnameOverride)
	}
	return nil
}

func (ctx *RunOnceApplicationContext) newTaskInfo(offer *mesos.Offer) *mesos.TaskInfo {
	taskName := fmt.Sprintf("%s.%s", ctx.Application.ID, offer.GetHostname())
	taskID := util.NewTaskID(fmt.Sprintf("%s|%s|%s", ctx.Application.ID, offer.GetHostname(), framework.UUID()))

	var URIs []*mesos.CommandInfo_URI
	if len(ctx.Application.ArtifactURLs) > 0 || len(ctx.Application.AdditionalArtifacts) > 0 {
		URIs = make([]*mesos.CommandInfo_URI, 0)
		for _, uri := range ctx.Application.ArtifactURLs {
			URIs = append(URIs, &mesos.CommandInfo_URI{
				Value:   proto.String(uri),
				Extract: proto.Bool(true),
			})
		}
		for _, uri := range ctx.Application.AdditionalArtifacts {
			URIs = append(URIs, &mesos.CommandInfo_URI{
				Value:   proto.String(uri),
				Extract: proto.Bool(true),
			})
		}
	}

	return &mesos.TaskInfo{
		Name:    proto.String(taskName),
		TaskId:  taskID,
		SlaveId: offer.GetSlaveId(),
		Resources: []*mesos.Resource{
			util.NewScalarResource("cpus", ctx.Application.Cpu),
			util.NewScalarResource("mem", ctx.Application.Mem),
		},
		Command: &mesos.CommandInfo{
			Shell: proto.Bool(true),
			Value: proto.String(ctx.Application.LaunchCommand),
			Uris:  URIs,
		},
	}
}

// NodeProcurement updates t.Spec in preparation for the task to be launched on the
// slave associated with the offer.
func NodeProcurement(t *T, offer *mesos.Offer) error {
	t.Spec.SlaveID = offer.GetSlaveId().GetValue()
	t.Spec.AssignedSlave = offer.GetHostname()
	return nil
}

// TODO(tyler) split this long function up!
func (s *EtcdScheduler) launchOne(driver scheduler.SchedulerDriver) {
	// Always ensure we've pruned any dead / unmanaged nodes before
	// launching new ones, or we may overconfigure the ensemble such
	// that it can not make progress if the next launch fails.
	err := s.Prune()
	if err != nil {
		log.Errorf("Failed to remove stale cluster members: %s", err)
		return
	}

	if !s.shouldLaunch(driver) {
		log.Infoln("Skipping launch attempt for now.")
		return
	}

	// validOffer filters out offers that are no longer
	// desirable, even though they may have been when
	// they were enqueued.
	validOffer := func(offer *mesos.Offer) bool {
		runningCopy := s.RunningCopy()
		for _, etcdConfig := range runningCopy {
			if etcdConfig.SlaveID == offer.SlaveId.GetValue() {
				if s.singleInstancePerSlave {
					log.Info("Skipping offer: already running on this slave.")
					return false
				}
			}
		}
		return true
	}

	// Issue BlockingPop until we get back an offer we can use.
	var offer *mesos.Offer
	for {
		offer = s.offerCache.BlockingPop()
		if validOffer(offer) {
			break
		} else {
			s.decline(driver, offer)
		}
	}

	// Do this again because BlockingPop may have taken a long time.
	if !s.shouldLaunch(driver) {
		log.Infoln("Skipping launch attempt for now.")
		s.decline(driver, offer)
		return
	}

	// TODO(tyler) this is a broken hack
	resources := parseOffer(offer)
	lowest := *resources.ports[0].Begin
	rpcPort := lowest
	clientPort := lowest + 1
	httpPort := lowest + 2

	s.mut.Lock()
	var clusterType string
	if len(s.running) == 0 {
		clusterType = "new"
	} else {
		clusterType = "existing"
	}

	s.highestInstanceID++
	name := "etcd-" + strconv.FormatInt(s.highestInstanceID, 10)

	node := &config.Node{
		Name:       name,
		Host:       *offer.Hostname,
		RPCPort:    rpcPort,
		ClientPort: clientPort,
		ReseedPort: httpPort,
		Type:       clusterType,
		SlaveID:    offer.GetSlaveId().GetValue(),
	}
	running := []*config.Node{node}
	for _, r := range s.running {
		running = append(running, r)
	}
	serializedNodes, err := json.Marshal(running)
	log.Infof("Serialized running: %+v", string(serializedNodes))
	if err != nil {
		log.Errorf("Could not serialize running list: %v", err)
		// This Unlock is not deferred because the test implementation of LaunchTasks
		// calls this scheduler's StatusUpdate method, causing the test to deadlock.
		s.decline(driver, offer)
		s.mut.Unlock()
		return
	}

	configSummary := node.String()
	taskID := &mesos.TaskID{Value: &configSummary}
	executor := s.newExecutorInfo(node, s.executorUris)
	task := &mesos.TaskInfo{
		Data:     serializedNodes,
		Name:     proto.String("etcd-server"),
		TaskId:   taskID,
		SlaveId:  offer.SlaveId,
//.........這裏部分代碼省略.........