Golang errors.NewServerTimeout函数代码示例

func (tw *baseTimeoutWriter) timeout(msg string) {
	tw.mu.Lock()
	defer tw.mu.Unlock()

	tw.timedOut = true

	// The timeout writer has not been used by the inner handler.
	// We can safely timeout the HTTP request by sending by a timeout
	// handler
	if !tw.wroteHeader && !tw.hijacked {
		tw.w.WriteHeader(http.StatusGatewayTimeout)
		if msg != "" {
			tw.w.Write([]byte(msg))
		} else {
			enc := json.NewEncoder(tw.w)
			enc.Encode(errors.NewServerTimeout(api.Resource(""), "", 0))
		}
	} else {
		// The timeout writer has been used by the inner handler. There is
		// no way to timeout the HTTP request at the point. We have to shutdown
		// the connection for HTTP1 or reset stream for HTTP2.
		//
		// Note from: Brad Fitzpatrick
		// if the ServeHTTP goroutine panics, that will do the best possible thing for both
		// HTTP/1 and HTTP/2. In HTTP/1, assuming you're replying with at least HTTP/1.1 and
		// you've already flushed the headers so it's using HTTP chunking, it'll kill the TCP
		// connection immediately without a proper 0-byte EOF chunk, so the peer will recognize
		// the response as bogus. In HTTP/2 the server will just RST_STREAM the stream, leaving
		// the TCP connection open, but resetting the stream to the peer so it'll have an error,
		// like the HTTP/1 case.
		panic(errConnKilled)
	}
}

// InterpretDeleteError converts a generic error on a delete
// operation into the appropriate API error.
func InterpretDeleteError(err error, qualifiedResource unversioned.GroupResource, name string) error {
	switch {
	case storage.IsNotFound(err):
		return errors.NewNotFound(qualifiedResource, name)
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(qualifiedResource, "delete", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretUpdateError converts a generic etcd error on a update
// operation into the appropriate API error.
func InterpretUpdateError(err error, kind, name string) error {
	switch {
	case etcdutil.IsEtcdTestFailed(err), etcdutil.IsEtcdNodeExist(err):
		return errors.NewConflict(kind, name, err)
	case etcdutil.IsEtcdUnreachable(err):
		return errors.NewServerTimeout(kind, "update", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretDeleteError converts a generic etcd error on a delete
// operation into the appropriate API error.
func InterpretDeleteError(err error, kind, name string) error {
	switch {
	case etcdutil.IsEtcdNotFound(err):
		return errors.NewNotFound(kind, name)
	case etcdutil.IsEtcdUnreachable(err):
		return errors.NewServerTimeout(kind, "delete", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretGetError converts a generic error on a retrieval
// operation into the appropriate API error.
func InterpretGetError(err error, kind, name string) error {
	switch {
	case storage.IsNotFound(err):
		return errors.NewNotFound(kind, name)
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(kind, "get", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretCreateError converts a generic etcd error on a create
// operation into the appropriate API error.
func InterpretCreateError(err error, kind, name string) error {
	switch {
	case etcdutil.IsEtcdNodeExist(err):
		return errors.NewAlreadyExists(kind, name)
	case etcdutil.IsEtcdUnreachable(err):
		return errors.NewServerTimeout(kind, "create", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretCreateError converts a generic error on a create
// operation into the appropriate API error.
func InterpretCreateError(err error, qualifiedResource schema.GroupResource, name string) error {
	switch {
	case storage.IsNodeExist(err):
		return errors.NewAlreadyExists(qualifiedResource, name)
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(qualifiedResource, "create", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretListError converts a generic error on a retrieval
// operation into the appropriate API error.
func InterpretListError(err error, qualifiedResource schema.GroupResource) error {
	switch {
	case storage.IsNotFound(err):
		return errors.NewNotFound(qualifiedResource, "")
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(qualifiedResource, "list", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretListError converts a generic etcd error on a retrieval
// operation into the appropriate API error.
func InterpretListError(err error, kind string) error {
	switch {
	case etcdstorage.IsEtcdNotFound(err):
		return errors.NewNotFound(kind, "")
	case etcdstorage.IsEtcdUnreachable(err):
		return errors.NewServerTimeout(kind, "list", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

// InterpretUpdateError converts a generic error on a update
// operation into the appropriate API error.
func InterpretUpdateError(err error, qualifiedResource unversioned.GroupResource, name string) error {
	switch {
	case storage.IsTestFailed(err), storage.IsNodeExist(err):
		return errors.NewConflict(qualifiedResource, name, err)
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(qualifiedResource, "update", 2) // TODO: make configurable or handled at a higher level
	default:
		return err
	}
}

func (tw *baseTimeoutWriter) timeout(msg string) {
	tw.mu.Lock()
	defer tw.mu.Unlock()
	if !tw.wroteHeader && !tw.hijacked {
		tw.w.WriteHeader(http.StatusGatewayTimeout)
		if msg != "" {
			tw.w.Write([]byte(msg))
		} else {
			enc := json.NewEncoder(tw.w)
			enc.Encode(errors.NewServerTimeout(api.Resource(""), "", 0))
		}
	}
	tw.timedOut = true
}

// InterpretDeleteError converts a generic error on a delete
// operation into the appropriate API error.
func InterpretDeleteError(err error, qualifiedResource schema.GroupResource, name string) error {
	switch {
	case storage.IsNotFound(err):
		return errors.NewNotFound(qualifiedResource, name)
	case storage.IsUnreachable(err):
		return errors.NewServerTimeout(qualifiedResource, "delete", 2) // TODO: make configurable or handled at a higher level
	case storage.IsTestFailed(err), storage.IsNodeExist(err), storage.IsInvalidObj(err):
		return errors.NewConflict(qualifiedResource, name, err)
	case storage.IsInternalError(err):
		return errors.NewInternalError(err)
	default:
		return err
	}
}

// CheckGeneratedNameError checks whether an error that occurred creating a resource is due
// to generation being unable to pick a valid name.
func CheckGeneratedNameError(strategy RESTCreateStrategy, err error, obj runtime.Object) error {
	if !errors.IsAlreadyExists(err) {
		return err
	}

	objectMeta, kind, kerr := objectMetaAndKind(strategy, obj)
	if kerr != nil {
		return kerr
	}

	if len(objectMeta.GenerateName) == 0 {
		return err
	}

	return errors.NewServerTimeout(kind, "POST", 0)
}

func (s *serviceAccount) mountServiceAccountToken(serviceAccount *api.ServiceAccount, pod *api.Pod) error {
	// Find the name of a referenced ServiceAccountToken secret we can mount
	serviceAccountToken, err := s.getReferencedServiceAccountToken(serviceAccount)
	if err != nil {
		return fmt.Errorf("Error looking up service account token for %s/%s: %v", serviceAccount.Namespace, serviceAccount.Name, err)
	}
	if len(serviceAccountToken) == 0 {
		// We don't have an API token to mount, so return
		if s.RequireAPIToken {
			// If a token is required, this is considered an error
			err := errors.NewServerTimeout(unversioned.GroupResource{Resource: "serviceaccounts"}, "create pod", 1)
			err.ErrStatus.Message = fmt.Sprintf("No API token found for service account %q, retry after the token is automatically created and added to the service account", serviceAccount.Name)
			return err
		}
		return nil
	}

	// Find the volume and volume name for the ServiceAccountTokenSecret if it already exists
	tokenVolumeName := ""
	hasTokenVolume := false
	allVolumeNames := sets.NewString()
	for _, volume := range pod.Spec.Volumes {
		allVolumeNames.Insert(volume.Name)
		if volume.Secret != nil && volume.Secret.SecretName == serviceAccountToken {
			tokenVolumeName = volume.Name
			hasTokenVolume = true
			break
		}
	}

	// Determine a volume name for the ServiceAccountTokenSecret in case we need it
	if len(tokenVolumeName) == 0 {
		// Try naming the volume the same as the serviceAccountToken, and uniquify if needed
		tokenVolumeName = serviceAccountToken
		if allVolumeNames.Has(tokenVolumeName) {
			tokenVolumeName = api.SimpleNameGenerator.GenerateName(fmt.Sprintf("%s-", serviceAccountToken))
		}
	}

	// Create the prototypical VolumeMount
	volumeMount := api.VolumeMount{
		Name:      tokenVolumeName,
		ReadOnly:  true,
		MountPath: DefaultAPITokenMountPath,
	}

	// Ensure every container mounts the APISecret volume
	needsTokenVolume := false
	for i, container := range pod.Spec.InitContainers {
		existingContainerMount := false
		for _, volumeMount := range container.VolumeMounts {
			// Existing mounts at the default mount path prevent mounting of the API token
			if volumeMount.MountPath == DefaultAPITokenMountPath {
				existingContainerMount = true
				break
			}
		}
		if !existingContainerMount {
			pod.Spec.InitContainers[i].VolumeMounts = append(pod.Spec.InitContainers[i].VolumeMounts, volumeMount)
			needsTokenVolume = true
		}
	}
	for i, container := range pod.Spec.Containers {
		existingContainerMount := false
		for _, volumeMount := range container.VolumeMounts {
			// Existing mounts at the default mount path prevent mounting of the API token
			if volumeMount.MountPath == DefaultAPITokenMountPath {
				existingContainerMount = true
				break
			}
		}
		if !existingContainerMount {
			pod.Spec.Containers[i].VolumeMounts = append(pod.Spec.Containers[i].VolumeMounts, volumeMount)
			needsTokenVolume = true
		}
	}

	// Add the volume if a container needs it
	if !hasTokenVolume && needsTokenVolume {
		volume := api.Volume{
			Name: tokenVolumeName,
			VolumeSource: api.VolumeSource{
				Secret: &api.SecretVolumeSource{
					SecretName: serviceAccountToken,
				},
			},
		}
		pod.Spec.Volumes = append(pod.Spec.Volumes, volume)
	}
	return nil
}

// Get returns a streamer resource with the contents of the deployment log
func (r *REST) Get(ctx kapi.Context, name string, opts runtime.Object) (runtime.Object, error) {
	// Ensure we have a namespace in the context
	namespace, ok := kapi.NamespaceFrom(ctx)
	if !ok {
		return nil, errors.NewBadRequest("namespace parameter required.")
	}

	// Validate DeploymentLogOptions
	deployLogOpts, ok := opts.(*deployapi.DeploymentLogOptions)
	if !ok {
		return nil, errors.NewBadRequest("did not get an expected options.")
	}
	if errs := validation.ValidateDeploymentLogOptions(deployLogOpts); len(errs) > 0 {
		return nil, errors.NewInvalid(deployapi.Kind("DeploymentLogOptions"), "", errs)
	}

	// Fetch deploymentConfig and check latest version; if 0, there are no deployments
	// for this config
	config, err := r.dn.DeploymentConfigs(namespace).Get(name)
	if err != nil {
		return nil, errors.NewNotFound(deployapi.Resource("deploymentconfig"), name)
	}
	desiredVersion := config.Status.LatestVersion
	if desiredVersion == 0 {
		return nil, errors.NewBadRequest(fmt.Sprintf("no deployment exists for deploymentConfig %q", config.Name))
	}

	// Support retrieving logs for older deployments
	switch {
	case deployLogOpts.Version == nil:
		// Latest or previous
		if deployLogOpts.Previous {
			desiredVersion--
			if desiredVersion < 1 {
				return nil, errors.NewBadRequest(fmt.Sprintf("no previous deployment exists for deploymentConfig %q", config.Name))
			}
		}
	case *deployLogOpts.Version <= 0 || *deployLogOpts.Version > config.Status.LatestVersion:
		// Invalid version
		return nil, errors.NewBadRequest(fmt.Sprintf("invalid version for deploymentConfig %q: %d", config.Name, *deployLogOpts.Version))
	default:
		desiredVersion = *deployLogOpts.Version
	}

	// Get desired deployment
	targetName := deployutil.DeploymentNameForConfigVersion(config.Name, desiredVersion)
	target, err := r.waitForExistingDeployment(namespace, targetName)
	if err != nil {
		return nil, err
	}
	podName := deployutil.DeployerPodNameForDeployment(target.Name)

	// Check for deployment status; if it is new or pending, we will wait for it. If it is complete,
	// the deployment completed successfully and the deployer pod will be deleted so we will return a
	// success message. If it is running or failed, retrieve the log from the deployer pod.
	status := deployutil.DeploymentStatusFor(target)
	switch status {
	case deployapi.DeploymentStatusNew, deployapi.DeploymentStatusPending:
		if deployLogOpts.NoWait {
			glog.V(4).Infof("Deployment %s is in %s state. No logs to retrieve yet.", deployutil.LabelForDeployment(target), status)
			return &genericrest.LocationStreamer{}, nil
		}
		glog.V(4).Infof("Deployment %s is in %s state, waiting for it to start...", deployutil.LabelForDeployment(target), status)

		if err := deployutil.WaitForRunningDeployerPod(r.pn, target, r.timeout); err != nil {
			return nil, errors.NewBadRequest(fmt.Sprintf("failed to run deployer pod %s: %v", podName, err))
		}

		latest, ok, err := registry.WaitForRunningDeployment(r.rn, target, r.timeout)
		if err != nil {
			return nil, errors.NewBadRequest(fmt.Sprintf("unable to wait for deployment %s to run: %v", deployutil.LabelForDeployment(target), err))
		}
		if !ok {
			return nil, errors.NewServerTimeout(kapi.Resource("ReplicationController"), "get", 2)
		}
		if deployutil.DeploymentStatusFor(latest) == deployapi.DeploymentStatusComplete {
			podName, err = r.returnApplicationPodName(target)
			if err != nil {
				return nil, err
			}
		}
	case deployapi.DeploymentStatusComplete:
		podName, err = r.returnApplicationPodName(target)
		if err != nil {
			return nil, err
		}
	}

	logOpts := deployapi.DeploymentToPodLogOptions(deployLogOpts)
	location, transport, err := pod.LogLocation(&podGetter{r.pn}, r.connInfo, ctx, podName, logOpts)
	if err != nil {
		return nil, errors.NewBadRequest(err.Error())
	}

	return &genericrest.LocationStreamer{
		Location:        location,
		Transport:       transport,
		ContentType:     "text/plain",
		Flush:           deployLogOpts.Follow,
//.........这里部分代码省略.........