Golang validation.ValidatePodLogOptions函數代碼示例

func (o LogsOptions) Validate() error {
	logsOptions, ok := o.Options.(*api.PodLogOptions)
	if !ok {
		return errors.New("unexpected logs options object")
	}
	if errs := validation.ValidatePodLogOptions(logsOptions); len(errs) > 0 {
		return errs.ToAggregate()
	}

	return nil
}

func ValidateBuildLogOptions(opts *buildapi.BuildLogOptions) fielderrors.ValidationErrorList {
	allErrs := fielderrors.ValidationErrorList{}

	// TODO: Replace by validating PodLogOptions via BuildLogOptions once it's bundled in
	popts := buildapi.BuildToPodLogOptions(opts)
	if errs := validation.ValidatePodLogOptions(popts); len(errs) > 0 {
		allErrs = append(allErrs, errs...)
	}

	return allErrs
}

func (o LogsOptions) Validate() error {
	if len(o.ResourceArg) == 0 {
		return errors.New("a pod must be specified")
	}
	logsOptions, ok := o.Options.(*api.PodLogOptions)
	if !ok {
		return errors.New("unexpected logs options object")
	}
	if errs := validation.ValidatePodLogOptions(logsOptions); len(errs) > 0 {
		return errs.ToAggregate()
	}

	return nil
}

func ValidateBuildLogOptions(opts *buildapi.BuildLogOptions) fielderrors.ValidationErrorList {
	allErrs := fielderrors.ValidationErrorList{}

	// TODO: Replace by validating PodLogOptions via BuildLogOptions once it's bundled in
	popts := buildapi.BuildToPodLogOptions(opts)
	if errs := validation.ValidatePodLogOptions(popts); len(errs) > 0 {
		allErrs = append(allErrs, errs...)
	}

	if opts.Version != nil && *opts.Version <= 0 {
		allErrs = append(allErrs, fielderrors.NewFieldInvalid("version", *opts.Version, "build version must be greater than 0"))
	}

	return allErrs
}

func ValidateDeploymentLogOptions(opts *deployapi.DeploymentLogOptions) field.ErrorList {
	allErrs := field.ErrorList{}

	// TODO: Replace by validating PodLogOptions via DeploymentLogOptions once it's bundled in
	popts := deployapi.DeploymentToPodLogOptions(opts)
	if errs := validation.ValidatePodLogOptions(popts); len(errs) > 0 {
		allErrs = append(allErrs, errs...)
	}

	if opts.Version != nil && *opts.Version <= 0 {
		allErrs = append(allErrs, field.Invalid(field.NewPath("version"), *opts.Version, "deployment version must be greater than 0"))
	}

	return allErrs
}

func ValidateBuildLogOptions(opts *buildapi.BuildLogOptions) field.ErrorList {
	allErrs := field.ErrorList{}

	// TODO: Replace by validating PodLogOptions via BuildLogOptions once it's bundled in
	popts := buildapi.BuildToPodLogOptions(opts)
	if errs := validation.ValidatePodLogOptions(popts); len(errs) > 0 {
		allErrs = append(allErrs, errs...)
	}

	if opts.Version != nil && *opts.Version <= 0 {
		allErrs = append(allErrs, field.Invalid(field.NewPath("version"), *opts.Version, "build version must be greater than 0"))
	}
	if opts.Version != nil && opts.Previous {
		allErrs = append(allErrs, field.Invalid(field.NewPath("previous"), opts.Previous, "cannot use previous when a version is specified"))
	}
	return allErrs
}

// Get retrieves a runtime.Object that will stream the contents of the pod log
func (r *LogREST) Get(ctx api.Context, name string, opts runtime.Object) (runtime.Object, error) {
	logOpts, ok := opts.(*api.PodLogOptions)
	if !ok {
		return nil, fmt.Errorf("Invalid options object: %#v", opts)
	}
	if errs := validation.ValidatePodLogOptions(logOpts); len(errs) > 0 {
		return nil, errors.NewInvalid("podlogs", name, errs)
	}
	location, transport, err := pod.LogLocation(r.store, r.kubeletConn, ctx, name, logOpts)
	if err != nil {
		return nil, err
	}
	return &genericrest.LocationStreamer{
		Location:    location,
		Transport:   transport,
		ContentType: "text/plain",
		Flush:       logOpts.Follow,
	}, nil
}

// Get retrieves a runtime.Object that will stream the contents of the pod log
func (r *LogREST) Get(ctx api.Context, name string, opts runtime.Object) (runtime.Object, error) {
	logOpts, ok := opts.(*api.PodLogOptions)
	if !ok {
		return nil, fmt.Errorf("invalid options object: %#v", opts)
	}
	if errs := validation.ValidatePodLogOptions(logOpts); len(errs) > 0 {
		return nil, errors.NewInvalid(api.Kind("PodLogOptions"), name, errs)
	}
	location, transport, err := pod.LogLocation(r.Store, r.KubeletConn, ctx, name, logOpts)
	if err != nil {
		return nil, err
	}
	return &genericrest.LocationStreamer{
		Location:        location,
		Transport:       transport,
		ContentType:     "text/plain",
		Flush:           logOpts.Follow,
		ResponseChecker: genericrest.NewGenericHttpResponseChecker(api.Resource("pods/log"), name),
	}, nil
}

// getContainerLogs handles containerLogs request against the Kubelet
func (s *Server) getContainerLogs(request *restful.Request, response *restful.Response) {
	podNamespace := request.PathParameter("podNamespace")
	podID := request.PathParameter("podID")
	containerName := request.PathParameter("containerName")

	if len(podID) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		// TODO: Why return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podID."}`))
		return
	}
	if len(containerName) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing container name."}`))
		return
	}
	if len(podNamespace) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podNamespace."}`))
		return
	}

	query := request.Request.URL.Query()
	// backwards compatibility for the "tail" query parameter
	if tail := request.QueryParameter("tail"); len(tail) > 0 {
		query["tailLines"] = []string{tail}
		// "all" is the same as omitting tail
		if tail == "all" {
			delete(query, "tailLines")
		}
	}
	// container logs on the kubelet are locked to v1
	versioned := &v1.PodLogOptions{}
	if err := api.Scheme.Convert(&query, versioned); err != nil {
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Unable to decode query."}`))
		return
	}
	out, err := api.Scheme.ConvertToVersion(versioned, "")
	if err != nil {
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Unable to convert request query."}`))
		return
	}
	logOptions := out.(*api.PodLogOptions)
	logOptions.TypeMeta = unversioned.TypeMeta{}
	if errs := validation.ValidatePodLogOptions(logOptions); len(errs) > 0 {
		response.WriteError(apierrs.StatusUnprocessableEntity, fmt.Errorf(`{"message": "Invalid request."}`))
		return
	}

	pod, ok := s.host.GetPodByName(podNamespace, podID)
	if !ok {
		response.WriteError(http.StatusNotFound, fmt.Errorf("Pod %q does not exist", podID))
		return
	}
	// Check if containerName is valid.
	containerExists := false
	for _, container := range pod.Spec.Containers {
		if container.Name == containerName {
			containerExists = true
		}
	}
	if !containerExists {
		response.WriteError(http.StatusNotFound, fmt.Errorf("Container %q not found in Pod %q", containerName, podID))
		return
	}

	if _, ok := response.ResponseWriter.(http.Flusher); !ok {
		response.WriteError(http.StatusInternalServerError, fmt.Errorf("unable to convert %v into http.Flusher", response))
		return
	}
	fw := flushwriter.Wrap(response.ResponseWriter)
	if logOptions.LimitBytes != nil {
		fw = limitwriter.New(fw, *logOptions.LimitBytes)
	}
	response.Header().Set("Transfer-Encoding", "chunked")
	response.WriteHeader(http.StatusOK)
	if err := s.host.GetKubeletContainerLogs(kubecontainer.GetPodFullName(pod), containerName, logOptions, fw, fw); err != nil {
		if err != limitwriter.ErrMaximumWrite {
			response.WriteError(http.StatusInternalServerError, err)
		}
		return
	}
}

// getContainerLogs handles containerLogs request against the Kubelet
func (s *Server) getContainerLogs(request *restful.Request, response *restful.Response) {
	podNamespace := request.PathParameter("podNamespace")
	podID := request.PathParameter("podID")
	containerName := request.PathParameter("containerName")

	if len(podID) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		// TODO: Why return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podID."}`))
		return
	}
	if len(containerName) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing container name."}`))
		return
	}
	if len(podNamespace) == 0 {
		// TODO: Why return JSON when the rest return plaintext errors?
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podNamespace."}`))
		return
	}

	query := request.Request.URL.Query()
	// backwards compatibility for the "tail" query parameter
	if tail := request.QueryParameter("tail"); len(tail) > 0 {
		query["tailLines"] = []string{tail}
		// "all" is the same as omitting tail
		if tail == "all" {
			delete(query, "tailLines")
		}
	}
	// container logs on the kubelet are locked to the v1 API version of PodLogOptions
	logOptions := &api.PodLogOptions{}
	if err := api.ParameterCodec.DecodeParameters(query, v1.SchemeGroupVersion, logOptions); err != nil {
		response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Unable to decode query."}`))
		return
	}
	logOptions.TypeMeta = unversioned.TypeMeta{}
	if errs := validation.ValidatePodLogOptions(logOptions); len(errs) > 0 {
		response.WriteError(apierrs.StatusUnprocessableEntity, fmt.Errorf(`{"message": "Invalid request."}`))
		return
	}

	pod, ok := s.host.GetPodByName(podNamespace, podID)
	if !ok {
		response.WriteError(http.StatusNotFound, fmt.Errorf("pod %q does not exist\n", podID))
		return
	}
	// Check if containerName is valid.
	containerExists := false
	for _, container := range pod.Spec.Containers {
		if container.Name == containerName {
			containerExists = true
		}
	}
	if !containerExists {
		for _, container := range pod.Spec.InitContainers {
			if container.Name == containerName {
				containerExists = true
			}
		}
	}
	if !containerExists {
		response.WriteError(http.StatusNotFound, fmt.Errorf("container %q not found in pod %q\n", containerName, podID))
		return
	}

	if _, ok := response.ResponseWriter.(http.Flusher); !ok {
		response.WriteError(http.StatusInternalServerError, fmt.Errorf("unable to convert %v into http.Flusher, cannot show logs\n", reflect.TypeOf(response)))
		return
	}
	fw := flushwriter.Wrap(response.ResponseWriter)
	// Byte limit logic is already implemented in kuberuntime. However, we still need this for
	// old runtime integration.
	// TODO(random-liu): Remove this once we switch to CRI integration.
	if logOptions.LimitBytes != nil {
		fw = limitwriter.New(fw, *logOptions.LimitBytes)
	}
	response.Header().Set("Transfer-Encoding", "chunked")
	if err := s.host.GetKubeletContainerLogs(kubecontainer.GetPodFullName(pod), containerName, logOptions, fw, fw); err != nil {
		if err != limitwriter.ErrMaximumWrite {
			response.WriteError(http.StatusBadRequest, err)
		}
		return
	}
}