func (s *KubeletExecutorServer) runExecutor(execUpdates chan<- kubetypes.PodUpdate, nodeInfos chan<- executor.NodeInfo, kubeletFinished <-chan struct{},
staticPodsConfigPath string, apiclient *client.Client) error {
exec := executor.New(executor.Config{
Updates: execUpdates,
APIClient: apiclient,
Docker: dockertools.ConnectToDockerOrDie(s.DockerEndpoint),
SuicideTimeout: s.SuicideTimeout,
KubeletFinished: kubeletFinished,
ExitFunc: os.Exit,
PodStatusFunc: func(pod *api.Pod) (*api.PodStatus, error) {
s.kletLock.Lock()
defer s.kletLock.Unlock()
if s.klet == nil {
return nil, fmt.Errorf("PodStatucFunc called before kubelet is initialized")
}
status, err := s.klet.GetRuntime().GetPodStatus(pod)
if err != nil {
return nil, err
}
status.Phase = kubelet.GetPhase(&pod.Spec, status.ContainerStatuses)
hostIP, err := s.klet.GetHostIP()
if err != nil {
log.Errorf("Cannot get host IP: %v", err)
} else {
status.HostIP = hostIP.String()
}
return status, nil
},
StaticPodsConfigPath: staticPodsConfigPath,
PodLW: cache.NewListWatchFromClient(apiclient, "pods", api.NamespaceAll,
fields.OneTermEqualSelector(client.PodHost, s.HostnameOverride),
),
NodeInfos: nodeInfos,
})
// initialize driver and initialize the executor with it
dconfig := bindings.DriverConfig{
Executor: exec,
HostnameOverride: s.HostnameOverride,
BindingAddress: s.Address,
}
driver, err := bindings.NewMesosExecutorDriver(dconfig)
if err != nil {
return fmt.Errorf("failed to create executor driver: %v", err)
}
log.V(2).Infof("Initialize executor driver...")
exec.Init(driver)
// start the driver
go func() {
if _, err := driver.Run(); err != nil {
log.Fatalf("executor driver failed: %v", err)
}
log.Info("executor Run completed")
}()
return nil
}
// async continuation of LaunchTask
func (k *KubernetesExecutor) launchTask(driver bindings.ExecutorDriver, taskId string, pod *api.Pod) {
deleteTask := func() {
k.lock.Lock()
defer k.lock.Unlock()
delete(k.tasks, taskId)
k.resetSuicideWatch(driver)
}
// TODO(k8s): use Pods interface for binding once clusters are upgraded
// return b.Pods(binding.Namespace).Bind(binding)
if pod.Spec.NodeName == "" {
//HACK(jdef): cloned binding construction from k8s plugin/pkg/scheduler/scheduler.go
binding := &api.Binding{
ObjectMeta: api.ObjectMeta{
Namespace: pod.Namespace,
Name: pod.Name,
Annotations: make(map[string]string),
},
Target: api.ObjectReference{
Kind: "Node",
Name: pod.Annotations[meta.BindingHostKey],
},
}
// forward the annotations that the scheduler wants to apply
for k, v := range pod.Annotations {
binding.Annotations[k] = v
}
// create binding on apiserver
log.Infof("Binding '%v/%v' to '%v' with annotations %+v...", pod.Namespace, pod.Name, binding.Target.Name, binding.Annotations)
ctx := api.WithNamespace(api.NewContext(), binding.Namespace)
err := k.client.Post().Namespace(api.NamespaceValue(ctx)).Resource("bindings").Body(binding).Do().Error()
if err != nil {
deleteTask()
k.sendStatus(driver, newStatus(mutil.NewTaskID(taskId), mesos.TaskState_TASK_FAILED,
messages.CreateBindingFailure))
return
}
} else {
// post annotations update to apiserver
patch := struct {
Metadata struct {
Annotations map[string]string `json:"annotations"`
} `json:"metadata"`
}{}
patch.Metadata.Annotations = pod.Annotations
patchJson, _ := json.Marshal(patch)
log.V(4).Infof("Patching annotations %v of pod %v/%v: %v", pod.Annotations, pod.Namespace, pod.Name, string(patchJson))
err := k.client.Patch(api.MergePatchType).RequestURI(pod.SelfLink).Body(patchJson).Do().Error()
if err != nil {
log.Errorf("Error updating annotations of ready-to-launch pod %v/%v: %v", pod.Namespace, pod.Name, err)
deleteTask()
k.sendStatus(driver, newStatus(mutil.NewTaskID(taskId), mesos.TaskState_TASK_FAILED,
messages.AnnotationUpdateFailure))
return
}
}
podFullName := container.GetPodFullName(pod)
// allow a recently failed-over scheduler the chance to recover the task/pod binding:
// it may have failed and recovered before the apiserver is able to report the updated
// binding information. replays of this status event will signal to the scheduler that
// the apiserver should be up-to-date.
data, err := json.Marshal(api.PodStatusResult{
ObjectMeta: api.ObjectMeta{
Name: podFullName,
SelfLink: "/podstatusresult",
},
})
if err != nil {
deleteTask()
log.Errorf("failed to marshal pod status result: %v", err)
k.sendStatus(driver, newStatus(mutil.NewTaskID(taskId), mesos.TaskState_TASK_FAILED,
err.Error()))
return
}
k.lock.Lock()
defer k.lock.Unlock()
// Add the task.
task, found := k.tasks[taskId]
if !found {
log.V(1).Infof("task %v not found, probably killed: aborting launch, reporting lost", taskId)
k.reportLostTask(driver, taskId, messages.LaunchTaskFailed)
return
}
//TODO(jdef) check for duplicate pod name, if found send TASK_ERROR
// from here on, we need to delete containers associated with the task
// upon it going into a terminal state
task.podName = podFullName
k.pods[podFullName] = pod
// send the new pod to the kubelet which will spin it up
update := kubelet.PodUpdate{
Op: kubelet.ADD,
Pods: []*api.Pod{pod},
}
k.updateChan <- update
statusUpdate := &mesos.TaskStatus{
TaskId: mutil.NewTaskID(taskId),
State: mesos.TaskState_TASK_STARTING.Enum(),
Message: proto.String(messages.CreateBindingSuccess),
Data: data,
}
k.sendStatus(driver, statusUpdate)
// Delay reporting 'task running' until container is up.
psf := podStatusFunc(func() (*api.PodStatus, error) {
status, err := k.podStatusFunc(k.kl, pod)
if err != nil {
return nil, err
}
status.Phase = kubelet.GetPhase(&pod.Spec, status.ContainerStatuses)
hostIP, err := k.kl.GetHostIP()
if err != nil {
log.Errorf("Cannot get host IP: %v", err)
} else {
status.HostIP = hostIP.String()
}
return status, nil
})
go k._launchTask(driver, taskId, podFullName, psf)
}