Golang validation.NewFieldPath函数代码示例

func ValidateClusterAutoscaler(autoscaler *extensions.ClusterAutoscaler) validation.ErrorList {
	allErrs := validation.ErrorList{}
	if autoscaler.Name != "ClusterAutoscaler" {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("metadata", "name"), autoscaler.Name, `name must be ClusterAutoscaler`))
	}
	if autoscaler.Namespace != api.NamespaceDefault {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("metadata", "namespace"), autoscaler.Namespace, `namespace must be default`))
	}
	allErrs = append(allErrs, validateClusterAutoscalerSpec(autoscaler.Spec, validation.NewFieldPath("spec"))...)
	return allErrs
}

// TODO: add other common fields that require global validation.
func validateCommonFields(obj, old runtime.Object) utilvalidation.ErrorList {
	allErrs := utilvalidation.ErrorList{}
	objectMeta, err := api.ObjectMetaFor(obj)
	if err != nil {
		return append(allErrs, utilvalidation.NewInternalError(utilvalidation.NewFieldPath("metadata"), err))
	}
	oldObjectMeta, err := api.ObjectMetaFor(old)
	if err != nil {
		return append(allErrs, utilvalidation.NewInternalError(utilvalidation.NewFieldPath("metadata"), err))
	}
	allErrs = append(allErrs, validation.ValidateObjectMetaUpdate(objectMeta, oldObjectMeta, utilvalidation.NewFieldPath("metadata"))...)

	return allErrs
}

// ValidateDaemonSetUpdate tests if required fields in the DaemonSet are set.
func ValidateDaemonSetUpdate(controller, oldController *extensions.DaemonSet) validation.ErrorList {
	allErrs := validation.ErrorList{}
	allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&controller.ObjectMeta, &oldController.ObjectMeta, validation.NewFieldPath("metadata"))...)
	allErrs = append(allErrs, ValidateDaemonSetSpec(&controller.Spec, validation.NewFieldPath("spec"))...)
	allErrs = append(allErrs, ValidateDaemonSetTemplateUpdate(controller.Spec.Template, oldController.Spec.Template, validation.NewFieldPath("spec", "template"))...)
	return allErrs
}

// ValidateEvent makes sure that the event makes sense.
func ValidateEvent(event *api.Event) validation.ErrorList {
	allErrs := validation.ErrorList{}
	// There is no namespace required for node.
	if event.InvolvedObject.Kind == "Node" &&
		event.Namespace != "" {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "namespace is not required for node"))
	}
	if event.InvolvedObject.Kind != "Node" &&
		event.Namespace != event.InvolvedObject.Namespace {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match involvedObject"))
	}
	if !validation.IsDNS1123Subdomain(event.Namespace) {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("namespace"), event.Namespace, ""))
	}
	return allErrs
}

func filterInvalidPods(pods []*api.Pod, source string, recorder record.EventRecorder) (filtered []*api.Pod) {
	names := sets.String{}
	for i, pod := range pods {
		var errlist utilvalidation.ErrorList
		if errs := validation.ValidatePod(pod); len(errs) != 0 {
			errlist = append(errlist, errs...)
			// If validation fails, don't trust it any further -
			// even Name could be bad.
		} else {
			name := kubecontainer.GetPodFullName(pod)
			if names.Has(name) {
				//FIXME: this implies an API version
				errlist = append(errlist, utilvalidation.NewDuplicateError(utilvalidation.NewFieldPath("metadata", "name"), pod.Name))
			} else {
				names.Insert(name)
			}
		}
		if len(errlist) > 0 {
			name := bestPodIdentString(pod)
			err := errlist.ToAggregate()
			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
			recorder.Eventf(pod, api.EventTypeWarning, kubecontainer.FailedValidation, "Error validating pod %s from %s, ignoring: %v", name, source, err)
			continue
		}
		filtered = append(filtered, pod)
	}
	return
}

func ValidateThirdPartyResourceData(obj *extensions.ThirdPartyResourceData) validation.ErrorList {
	allErrs := validation.ErrorList{}
	if len(obj.Name) == 0 {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("name"), obj.Name, "must be non-empty"))
	}
	return allErrs
}

func ValidateJob(job *extensions.Job) validation.ErrorList {
	allErrs := validation.ErrorList{}
	// Jobs and rcs have the same name validation
	allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&job.ObjectMeta, true, apivalidation.ValidateReplicationControllerName, validation.NewFieldPath("metadata"))...)
	allErrs = append(allErrs, ValidateJobSpec(&job.Spec, validation.NewFieldPath("spec"))...)
	return allErrs
}

func ValidateThirdPartyResource(obj *extensions.ThirdPartyResource) validation.ErrorList {
	allErrs := validation.ErrorList{}
	allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&obj.ObjectMeta, true, ValidateThirdPartyResourceName, validation.NewFieldPath("metadata"))...)

	versions := sets.String{}
	for ix := range obj.Versions {
		version := &obj.Versions[ix]
		if len(version.Name) == 0 {
			allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("versions").Index(ix).Child("name"), version, "can not be empty"))
		}
		if versions.Has(version.Name) {
			allErrs = append(allErrs, validation.NewDuplicateError(validation.NewFieldPath("versions").Index(ix).Child("name"), version))
		}
		versions.Insert(version.Name)
	}
	return allErrs
}

func ValidateScale(scale *extensions.Scale) validation.ErrorList {
	allErrs := validation.ErrorList{}
	allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&scale.ObjectMeta, true, apivalidation.NameIsDNSSubdomain, validation.NewFieldPath("metadata"))...)

	if scale.Spec.Replicas < 0 {
		allErrs = append(allErrs, validation.NewInvalidError(validation.NewFieldPath("spec", "replicas"), scale.Spec.Replicas, "must be non-negative"))
	}

	return allErrs
}

// ParseWatchResourceVersion takes a resource version argument and converts it to
// the etcd version we should pass to helper.Watch(). Because resourceVersion is
// an opaque value, the default watch behavior for non-zero watch is to watch
// the next value (if you pass "1", you will see updates from "2" onwards).
func ParseWatchResourceVersion(resourceVersion string) (uint64, error) {
	if resourceVersion == "" || resourceVersion == "0" {
		return 0, nil
	}
	version, err := strconv.ParseUint(resourceVersion, 10, 64)
	if err != nil {
		return 0, errors.NewInvalid("", "", utilvalidation.ErrorList{
			// Validation errors are supposed to return version-specific field
			// paths, but this is probably close enough.
			utilvalidation.NewInvalidError(utilvalidation.NewFieldPath("resourceVersion"), resourceVersion, err.Error()),
		})
	}
	return version + 1, nil
}

func (rs *REST) Update(ctx api.Context, obj runtime.Object) (runtime.Object, bool, error) {
	service := obj.(*api.Service)
	if !api.ValidNamespace(ctx, &service.ObjectMeta) {
		return nil, false, errors.NewConflict("service", service.Namespace, fmt.Errorf("Service.Namespace does not match the provided context"))
	}

	oldService, err := rs.registry.GetService(ctx, service.Name)
	if err != nil {
		return nil, false, err
	}

	// Copy over non-user fields
	// TODO: make this a merge function
	if errs := validation.ValidateServiceUpdate(service, oldService); len(errs) > 0 {
		return nil, false, errors.NewInvalid("service", service.Name, errs)
	}

	nodePortOp := portallocator.StartOperation(rs.serviceNodePorts)
	defer nodePortOp.Finish()

	assignNodePorts := shouldAssignNodePorts(service)

	oldNodePorts := CollectServiceNodePorts(oldService)

	newNodePorts := []int{}
	if assignNodePorts {
		for i := range service.Spec.Ports {
			servicePort := &service.Spec.Ports[i]
			nodePort := servicePort.NodePort
			if nodePort != 0 {
				if !contains(oldNodePorts, nodePort) {
					err := nodePortOp.Allocate(nodePort)
					if err != nil {
						el := utilvalidation.ErrorList{utilvalidation.NewInvalidError(utilvalidation.NewFieldPath("spec", "ports").Index(i).Child("nodePort"), nodePort, err.Error())}
						return nil, false, errors.NewInvalid("Service", service.Name, el)
					}
				}
			} else {
				nodePort, err = nodePortOp.AllocateNext()
				if err != nil {
					el := utilvalidation.ErrorList{utilvalidation.NewInvalidError(utilvalidation.NewFieldPath("spec", "ports").Index(i).Child("nodePort"), nodePort, err.Error())}
					return nil, false, errors.NewInvalid("Service", service.Name, el)
				}
				servicePort.NodePort = nodePort
			}
			// Detect duplicate node ports; this should have been caught by validation, so we panic
			if contains(newNodePorts, nodePort) {
				panic("duplicate node port")
			}
			newNodePorts = append(newNodePorts, nodePort)
		}
	} else {
		// Validate should have validated that nodePort == 0
	}

	// The comparison loops are O(N^2), but we don't expect N to be huge
	// (there's a hard-limit at 2^16, because they're ports; and even 4 ports would be a lot)
	for _, oldNodePort := range oldNodePorts {
		if !contains(newNodePorts, oldNodePort) {
			continue
		}
		nodePortOp.ReleaseDeferred(oldNodePort)
	}

	// Remove any LoadBalancerStatus now if Type != LoadBalancer;
	// although loadbalancer delete is actually asynchronous, we don't need to expose the user to that complexity.
	if service.Spec.Type != api.ServiceTypeLoadBalancer {
		service.Status.LoadBalancer = api.LoadBalancerStatus{}
	}

	out, err := rs.registry.UpdateService(ctx, service)

	if err == nil {
		el := nodePortOp.Commit()
		if el != nil {
			// problems should be fixed by an eventual reconciliation / restart
			glog.Errorf("error(s) committing NodePorts changes: %v", el)
		}
	}

	return out, false, err
}

// Create ensures a pod is bound to a specific host.
func (r *BindingREST) Create(ctx api.Context, obj runtime.Object) (out runtime.Object, err error) {
	binding := obj.(*api.Binding)
	// TODO: move me to a binding strategy
	if len(binding.Target.Kind) != 0 && binding.Target.Kind != "Node" {
		return nil, errors.NewInvalid("binding", binding.Name, validation.ErrorList{validation.NewInvalidError(validation.NewFieldPath("target", "kind"), binding.Target.Kind, "must be empty or 'Node'")})
	}
	if len(binding.Target.Name) == 0 {
		return nil, errors.NewInvalid("binding", binding.Name, validation.ErrorList{validation.NewRequiredError(validation.NewFieldPath("target", "name"))})
	}
	err = r.assignPod(ctx, binding.Name, binding.Target.Name, binding.Annotations)
	out = &unversioned.Status{Status: unversioned.StatusSuccess}
	return
}

func TestNewInvalid(t *testing.T) {
	testCases := []struct {
		Err     *validation.Error
		Details *unversioned.StatusDetails
	}{
		{
			validation.NewDuplicateError(validation.NewFieldPath("field[0].name"), "bar"),
			&unversioned.StatusDetails{
				Kind: "kind",
				Name: "name",
				Causes: []unversioned.StatusCause{{
					Type:  unversioned.CauseTypeFieldValueDuplicate,
					Field: "field[0].name",
				}},
			},
		},
		{
			validation.NewInvalidError(validation.NewFieldPath("field[0].name"), "bar", "detail"),
			&unversioned.StatusDetails{
				Kind: "kind",
				Name: "name",
				Causes: []unversioned.StatusCause{{
					Type:  unversioned.CauseTypeFieldValueInvalid,
					Field: "field[0].name",
				}},
			},
		},
		{
			validation.NewNotFoundError(validation.NewFieldPath("field[0].name"), "bar"),
			&unversioned.StatusDetails{
				Kind: "kind",
				Name: "name",
				Causes: []unversioned.StatusCause{{
					Type:  unversioned.CauseTypeFieldValueNotFound,
					Field: "field[0].name",
				}},
			},
		},
		{
			validation.NewNotSupportedError(validation.NewFieldPath("field[0].name"), "bar", nil),
			&unversioned.StatusDetails{
				Kind: "kind",
				Name: "name",
				Causes: []unversioned.StatusCause{{
					Type:  unversioned.CauseTypeFieldValueNotSupported,
					Field: "field[0].name",
				}},
			},
		},
		{
			validation.NewRequiredError(validation.NewFieldPath("field[0].name")),
			&unversioned.StatusDetails{
				Kind: "kind",
				Name: "name",
				Causes: []unversioned.StatusCause{{
					Type:  unversioned.CauseTypeFieldValueRequired,
					Field: "field[0].name",
				}},
			},
		},
	}
	for i, testCase := range testCases {
		vErr, expected := testCase.Err, testCase.Details
		expected.Causes[0].Message = vErr.ErrorBody()
		err := NewInvalid("kind", "name", validation.ErrorList{vErr})
		status := err.(*StatusError).ErrStatus
		if status.Code != 422 || status.Reason != unversioned.StatusReasonInvalid {
			t.Errorf("%d: unexpected status: %#v", i, status)
		}
		if !reflect.DeepEqual(expected, status.Details) {
			t.Errorf("%d: expected %#v, got %#v", i, expected, status.Details)
		}
	}
}

func ValidateHorizontalPodAutoscalerUpdate(newAutoscaler, oldAutoscaler *extensions.HorizontalPodAutoscaler) validation.ErrorList {
	allErrs := validation.ErrorList{}
	allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&newAutoscaler.ObjectMeta, &oldAutoscaler.ObjectMeta, validation.NewFieldPath("metadata"))...)
	allErrs = append(allErrs, validateHorizontalPodAutoscalerSpec(newAutoscaler.Spec, validation.NewFieldPath("spec"))...)
	return allErrs
}

func ValidateHorizontalPodAutoscalerStatusUpdate(controller, oldController *extensions.HorizontalPodAutoscaler) validation.ErrorList {
	allErrs := validation.ErrorList{}
	allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&controller.ObjectMeta, &oldController.ObjectMeta, validation.NewFieldPath("metadata"))...)

	status := controller.Status
	allErrs = append(allErrs, apivalidation.ValidatePositiveField(int64(status.CurrentReplicas), validation.NewFieldPath("status", "currentReplicas"))...)
	allErrs = append(allErrs, apivalidation.ValidatePositiveField(int64(status.DesiredReplicas), validation.NewFieldPath("status", "desiredReplicasa"))...)
	return allErrs
}