Documentation

Overview

    Package resource assists clients in dealing with RESTful objects that match the Kubernetes API conventions. The Helper object provides simple CRUD operations on resources. The Visitor interface makes it easy to deal with multiple resources in bulk for retrieval and operation. The Builder object simplifies converting standard command line arguments and parameters into a Visitor that can iterate over all of the identified resources, whether on the server or on the local filesystem.

    Index

    Constants

    This section is empty.

    Variables

    View Source
    var FakeCategoryExpander restmapper.CategoryExpander = restmapper.SimpleCategoryExpander{
    	Expansions: map[string][]schema.GroupResource{
    		"all": {
    			{Group: "", Resource: "pods"},
    			{Group: "", Resource: "replicationcontrollers"},
    			{Group: "", Resource: "services"},
    			{Group: "apps", Resource: "statefulsets"},
    			{Group: "autoscaling", Resource: "horizontalpodautoscalers"},
    			{Group: "batch", Resource: "jobs"},
    			{Group: "batch", Resource: "cronjobs"},
    			{Group: "extensions", Resource: "daemonsets"},
    			{Group: "extensions", Resource: "deployments"},
    			{Group: "extensions", Resource: "replicasets"},
    		},
    	},
    }

      FakeCategoryExpander is for testing only

      View Source
      var FileExtensions = []string{".json", ".yaml", ".yml"}
      View Source
      var InputExtensions = append(FileExtensions, "stdin")
      View Source
      var LocalResourceError = errors.New(`error: you must specify resources by --filename when --local is set.
      Example resource specifications include:
         '-f rsrc.yaml'
         '--filename=rsrc.json'`)

      Functions

      func CreateAndRefresh

      func CreateAndRefresh(info *Info) error

        CreateAndRefresh creates an object from input info and refreshes info with that object

        func FilterNamespace

        func FilterNamespace(info *Info, err error) error

          FilterNamespace omits the namespace if the object is not namespace scoped

          func HasNames

          func HasNames(args []string) (bool, error)

            HasNames returns true if the provided args contain resource names

            func IsUsageError

            func IsUsageError(err error) bool

              TODO: expand this to include other errors.

              func RetrieveLatest

              func RetrieveLatest(info *Info, err error) error

                RetrieveLatest updates the Object on each Info by invoking a standard client Get.

                func RetrieveLazy

                func RetrieveLazy(info *Info, err error) error

                  RetrieveLazy updates the object if it has not been loaded yet.

                  func SplitResourceArgument

                  func SplitResourceArgument(arg string) []string

                    SplitResourceArgument splits the argument with commas and returns unique strings in the original order.

                    func UnstructuredPlusDefaultContentConfig

                    func UnstructuredPlusDefaultContentConfig() rest.ContentConfig

                      ContentConfig returns a rest.ContentConfig for dynamic types. It includes enough codecs to act as a "normal" serializer for the rest.client with options, status and the like.

                      func UpdateObjectNamespace

                      func UpdateObjectNamespace(info *Info, err error) error

                      func ValidateSchema

                      func ValidateSchema(data []byte, schema ContentValidator) error

                      Types

                      type Builder

                      type Builder struct {
                      	// contains filtered or unexported fields
                      }

                        Builder provides convenience functions for taking arguments and parameters from the command line and converting them to a list of resources to iterate over using the Visitor interface.

                        func NewBuilder

                        func NewBuilder(restClientGetter RESTClientGetter) *Builder

                        func NewFakeBuilder

                        func NewFakeBuilder(fakeClientFn FakeClientFunc, restMapper RESTMapperFunc, categoryExpander CategoryExpanderFunc) *Builder

                        func (*Builder) AddError

                        func (b *Builder) AddError(err error) *Builder

                        func (*Builder) AllNamespaces

                        func (b *Builder) AllNamespaces(allNamespace bool) *Builder

                          AllNamespaces instructs the builder to metav1.NamespaceAll as a namespace to request resources across all of the namespace. This overrides the namespace set by NamespaceParam().

                          func (*Builder) ContinueOnError

                          func (b *Builder) ContinueOnError() *Builder

                            ContinueOnError will attempt to load and visit as many objects as possible, even if some visits return errors or some objects cannot be loaded. The default behavior is to terminate after the first error is returned from a VisitorFunc.

                            func (*Builder) DefaultNamespace

                            func (b *Builder) DefaultNamespace() *Builder

                              DefaultNamespace instructs the builder to set the namespace value for any object found to NamespaceParam() if empty.

                              func (*Builder) Do

                              func (b *Builder) Do() *Result

                                Do returns a Result object with a Visitor for the resources identified by the Builder. The visitor will respect the error behavior specified by ContinueOnError. Note that stream inputs are consumed by the first execution - use Infos() or Object() on the Result to capture a list for further iteration.

                                func (*Builder) ExportParam

                                func (b *Builder) ExportParam(export bool) *Builder

                                  ExportParam accepts the export boolean for these resources

                                  func (*Builder) FieldSelectorParam

                                  func (b *Builder) FieldSelectorParam(s string) *Builder

                                    FieldSelectorParam defines a selector that should be applied to the object types to load. This will not affect files loaded from disk or URL. If the parameter is empty it is a no-op - to select all resources.

                                    func (*Builder) FilenameParam

                                    func (b *Builder) FilenameParam(enforceNamespace bool, filenameOptions *FilenameOptions) *Builder

                                      FilenameParam groups input in two categories: URLs and files (files, directories, STDIN) If enforceNamespace is false, namespaces in the specs will be allowed to override the default namespace. If it is true, namespaces that don't match will cause an error. If ContinueOnError() is set prior to this method, objects on the path that are not recognized will be ignored (but logged at V(2)).

                                      func (*Builder) Flatten

                                      func (b *Builder) Flatten() *Builder

                                        Flatten will convert any objects with a field named "Items" that is an array of runtime.Object compatible types into individual entries and give them their own items. The original object is not passed to any visitors.

                                        func (*Builder) LabelSelector

                                        func (b *Builder) LabelSelector(selector string) *Builder

                                          LabelSelector accepts a selector directly and will filter the resulting list by that object. Use LabelSelectorParam instead for user input.

                                          func (*Builder) LabelSelectorParam

                                          func (b *Builder) LabelSelectorParam(s string) *Builder

                                            LabelSelectorParam defines a selector that should be applied to the object types to load. This will not affect files loaded from disk or URL. If the parameter is empty it is a no-op - to select all resources invoke `b.LabelSelector(labels.Everything.String)`.

                                            func (*Builder) Latest

                                            func (b *Builder) Latest() *Builder

                                              Latest will fetch the latest copy of any objects loaded from URLs or files from the server.

                                              func (*Builder) Local

                                              func (b *Builder) Local() *Builder

                                                Local will avoid asking the server for results.

                                                func (*Builder) LocalParam

                                                func (b *Builder) LocalParam(local bool) *Builder

                                                  LocalParam calls Local() if local is true.

                                                  func (*Builder) Mapper

                                                  func (b *Builder) Mapper() *mapper

                                                    Mapper returns a copy of the current mapper.

                                                    func (*Builder) NamespaceParam

                                                    func (b *Builder) NamespaceParam(namespace string) *Builder

                                                      NamespaceParam accepts the namespace that these resources should be considered under from - used by DefaultNamespace() and RequireNamespace()

                                                      func (*Builder) Path

                                                      func (b *Builder) Path(recursive bool, paths ...string) *Builder

                                                        Path accepts a set of paths that may be files, directories (all can containing one or more resources). Creates a FileVisitor for each file and then each FileVisitor is streaming the content to a StreamVisitor. If ContinueOnError() is set prior to this method being called, objects on the path that are unrecognized will be ignored (but logged at V(2)).

                                                        func (*Builder) ReplaceAliases

                                                        func (b *Builder) ReplaceAliases(input string) string

                                                          ReplaceAliases accepts an argument and tries to expand any existing aliases found in it

                                                          func (*Builder) RequestChunksOf

                                                          func (b *Builder) RequestChunksOf(chunkSize int64) *Builder

                                                            RequestChunksOf attempts to load responses from the server in batches of size limit to avoid long delays loading and transferring very large lists. If unset defaults to no chunking.

                                                            func (*Builder) RequireNamespace

                                                            func (b *Builder) RequireNamespace() *Builder

                                                              RequireNamespace instructs the builder to set the namespace value for any object found to NamespaceParam() if empty, and if the value on the resource does not match NamespaceParam() an error will be returned.

                                                              func (*Builder) RequireObject

                                                              func (b *Builder) RequireObject(require bool) *Builder

                                                                RequireObject ensures that resulting infos have an object set. If false, resulting info may not have an object set.

                                                                func (*Builder) ResourceNames

                                                                func (b *Builder) ResourceNames(resource string, names ...string) *Builder

                                                                  ResourceNames accepts a default type and one or more names, and creates tuples of resources

                                                                  func (*Builder) ResourceTypeOrNameArgs

                                                                  func (b *Builder) ResourceTypeOrNameArgs(allowEmptySelector bool, args ...string) *Builder

                                                                    ResourceTypeOrNameArgs indicates that the builder should accept arguments of the form `(<type1>[,<type2>,...]|<type> <name1>[,<name2>,...])`. When one argument is received, the types provided will be retrieved from the server (and be comma delimited). When two or more arguments are received, they must be a single type and resource name(s). The allowEmptySelector permits to select all the resources (via Everything func).

                                                                    func (*Builder) ResourceTypes

                                                                    func (b *Builder) ResourceTypes(types ...string) *Builder

                                                                      ResourceTypes is a list of types of resources to operate on, when listing objects on the server or retrieving objects that match a selector.

                                                                      func (*Builder) Schema

                                                                      func (b *Builder) Schema(schema ContentValidator) *Builder

                                                                      func (*Builder) SelectAllParam

                                                                      func (b *Builder) SelectAllParam(selectAll bool) *Builder

                                                                        SelectEverythingParam

                                                                        func (*Builder) SingleResourceType

                                                                        func (b *Builder) SingleResourceType() *Builder

                                                                          SingleResourceType will cause the builder to error if the user specifies more than a single type of resource.

                                                                          func (*Builder) Stdin

                                                                          func (b *Builder) Stdin() *Builder

                                                                            Stdin will read objects from the standard input. If ContinueOnError() is set prior to this method being called, objects in the stream that are unrecognized will be ignored (but logged at V(2)).

                                                                            func (*Builder) Stream

                                                                            func (b *Builder) Stream(r io.Reader, name string) *Builder

                                                                              Stream will read objects from the provided reader, and if an error occurs will include the name string in the error message. If ContinueOnError() is set prior to this method being called, objects in the stream that are unrecognized will be ignored (but logged at V(2)).

                                                                              func (*Builder) TransformRequests

                                                                              func (b *Builder) TransformRequests(opts ...RequestTransform) *Builder

                                                                                TransformRequests alters API calls made by clients requested from this builder. Pass an empty list to clear modifiers.

                                                                                func (*Builder) URL

                                                                                func (b *Builder) URL(httpAttemptCount int, urls ...*url.URL) *Builder

                                                                                  URL accepts a number of URLs directly.

                                                                                  func (*Builder) Unstructured

                                                                                  func (b *Builder) Unstructured() *Builder

                                                                                    Unstructured updates the builder so that it will request and send unstructured objects. Unstructured objects preserve all fields sent by the server in a map format based on the object's JSON structure which means no data is lost when the client reads and then writes an object. Use this mode in preference to Internal unless you are working with Go types directly.

                                                                                    func (*Builder) WithScheme

                                                                                    func (b *Builder) WithScheme(scheme *runtime.Scheme, decodingVersions ...schema.GroupVersion) *Builder

                                                                                      WithScheme uses the scheme to manage typing, conversion (optional), and decoding. If decodingVersions is empty, then you can end up with internal types. You have been warned.

                                                                                      type CategoryExpanderFunc

                                                                                      type CategoryExpanderFunc func() (restmapper.CategoryExpander, error)

                                                                                      type ClientConfigFunc

                                                                                      type ClientConfigFunc func() (*rest.Config, error)

                                                                                      type ContentValidator

                                                                                      type ContentValidator interface {
                                                                                      	ValidateBytes(data []byte) error
                                                                                      }

                                                                                        ContentValidator is an interface that knows how to validate an API object serialized to a byte array.

                                                                                        type ContinueOnErrorVisitor

                                                                                        type ContinueOnErrorVisitor struct {
                                                                                        	Visitor
                                                                                        }

                                                                                          ContinueOnErrorVisitor visits each item and, if an error occurs on any individual item, returns an aggregate error after all items are visited.

                                                                                          func (ContinueOnErrorVisitor) Visit

                                                                                            Visit returns nil if no error occurs during traversal, a regular error if one occurs, or if multiple errors occur, an aggregate error. If the provided visitor fails on any individual item it will not prevent the remaining items from being visited. An error returned by the visitor directly may still result in some items not being visited.

                                                                                            type DecoratedVisitor

                                                                                            type DecoratedVisitor struct {
                                                                                            	// contains filtered or unexported fields
                                                                                            }

                                                                                              DecoratedVisitor will invoke the decorators in order prior to invoking the visitor function passed to Visit. An error will terminate the visit.

                                                                                              func (DecoratedVisitor) Visit

                                                                                              func (v DecoratedVisitor) Visit(fn VisitorFunc) error

                                                                                                Visit implements Visitor

                                                                                                type EagerVisitorList

                                                                                                type EagerVisitorList []Visitor

                                                                                                  EagerVisitorList implements Visit for the sub visitors it contains. All errors will be captured and returned at the end of iteration.

                                                                                                  func (EagerVisitorList) Visit

                                                                                                  func (l EagerVisitorList) Visit(fn VisitorFunc) error

                                                                                                    Visit implements Visitor, and gathers errors that occur during processing until all sub visitors have been visited.

                                                                                                    type ErrMatchFunc

                                                                                                    type ErrMatchFunc func(error) bool

                                                                                                      ErrMatchFunc can be used to filter errors that may not be true failures.

                                                                                                      type FakeClientFunc

                                                                                                      type FakeClientFunc func(version schema.GroupVersion) (RESTClient, error)

                                                                                                      type FileVisitor

                                                                                                      type FileVisitor struct {
                                                                                                      	Path string
                                                                                                      	*StreamVisitor
                                                                                                      }

                                                                                                        FileVisitor is wrapping around a StreamVisitor, to handle open/close files

                                                                                                        func (*FileVisitor) Visit

                                                                                                        func (v *FileVisitor) Visit(fn VisitorFunc) error

                                                                                                          Visit in a FileVisitor is just taking care of opening/closing files

                                                                                                          type FilenameOptions

                                                                                                          type FilenameOptions struct {
                                                                                                          	Filenames []string
                                                                                                          	Kustomize string
                                                                                                          	Recursive bool
                                                                                                          }

                                                                                                          func (*FilenameOptions) RequireFilenameOrKustomize

                                                                                                          func (o *FilenameOptions) RequireFilenameOrKustomize() error

                                                                                                          type FilterFunc

                                                                                                          type FilterFunc func(info *Info, err error) (bool, error)

                                                                                                          func FilterByLabelSelector

                                                                                                          func FilterByLabelSelector(s labels.Selector) FilterFunc

                                                                                                          type FilteredVisitor

                                                                                                          type FilteredVisitor struct {
                                                                                                          	// contains filtered or unexported fields
                                                                                                          }

                                                                                                          func (FilteredVisitor) Visit

                                                                                                          func (v FilteredVisitor) Visit(fn VisitorFunc) error

                                                                                                          type FlattenListVisitor

                                                                                                          type FlattenListVisitor struct {
                                                                                                          	// contains filtered or unexported fields
                                                                                                          }

                                                                                                            FlattenListVisitor flattens any objects that runtime.ExtractList recognizes as a list - has an "Items" public field that is a slice of runtime.Objects or objects satisfying that interface - into multiple Infos. An error on any sub item (for instance, if a List contains an object that does not have a registered client or resource) will terminate the visit. TODO: allow errors to be aggregated?

                                                                                                            func (FlattenListVisitor) Visit

                                                                                                            func (v FlattenListVisitor) Visit(fn VisitorFunc) error

                                                                                                            type Helper

                                                                                                            type Helper struct {
                                                                                                            	// The name of this resource as the server would recognize it
                                                                                                            	Resource string
                                                                                                            	// A RESTClient capable of mutating this resource.
                                                                                                            	RESTClient RESTClient
                                                                                                            	// True if the resource type is scoped to namespaces
                                                                                                            	NamespaceScoped bool
                                                                                                            }

                                                                                                              Helper provides methods for retrieving or mutating a RESTful resource.

                                                                                                              func NewHelper

                                                                                                              func NewHelper(client RESTClient, mapping *meta.RESTMapping) *Helper

                                                                                                                NewHelper creates a Helper from a ResourceMapping

                                                                                                                func (*Helper) Create

                                                                                                                func (m *Helper) Create(namespace string, modify bool, obj runtime.Object, options *metav1.CreateOptions) (runtime.Object, error)

                                                                                                                func (*Helper) Delete

                                                                                                                func (m *Helper) Delete(namespace, name string) (runtime.Object, error)

                                                                                                                func (*Helper) DeleteWithOptions

                                                                                                                func (m *Helper) DeleteWithOptions(namespace, name string, options *metav1.DeleteOptions) (runtime.Object, error)

                                                                                                                func (*Helper) Get

                                                                                                                func (m *Helper) Get(namespace, name string, export bool) (runtime.Object, error)

                                                                                                                func (*Helper) List

                                                                                                                func (m *Helper) List(namespace, apiVersion string, export bool, options *metav1.ListOptions) (runtime.Object, error)

                                                                                                                func (*Helper) Patch

                                                                                                                func (m *Helper) Patch(namespace, name string, pt types.PatchType, data []byte, options *metav1.PatchOptions) (runtime.Object, error)

                                                                                                                func (*Helper) Replace

                                                                                                                func (m *Helper) Replace(namespace, name string, overwrite bool, obj runtime.Object) (runtime.Object, error)

                                                                                                                func (*Helper) Watch

                                                                                                                func (m *Helper) Watch(namespace, apiVersion string, options *metav1.ListOptions) (watch.Interface, error)

                                                                                                                func (*Helper) WatchSingle

                                                                                                                func (m *Helper) WatchSingle(namespace, name, resourceVersion string) (watch.Interface, error)

                                                                                                                type Info

                                                                                                                type Info struct {
                                                                                                                	// Client will only be present if this builder was not local
                                                                                                                	Client RESTClient
                                                                                                                	// Mapping will only be present if this builder was not local
                                                                                                                	Mapping *meta.RESTMapping
                                                                                                                
                                                                                                                	// Namespace will be set if the object is namespaced and has a specified value.
                                                                                                                	Namespace string
                                                                                                                	Name      string
                                                                                                                
                                                                                                                	// Optional, Source is the filename or URL to template file (.json or .yaml),
                                                                                                                	// or stdin to use to handle the resource
                                                                                                                	Source string
                                                                                                                	// Optional, this is the most recent value returned by the server if available. It will
                                                                                                                	// typically be in unstructured or internal forms, depending on how the Builder was
                                                                                                                	// defined. If retrieved from the server, the Builder expects the mapping client to
                                                                                                                	// decide the final form. Use the AsVersioned, AsUnstructured, and AsInternal helpers
                                                                                                                	// to alter the object versions.
                                                                                                                	Object runtime.Object
                                                                                                                	// Optional, this is the most recent resource version the server knows about for
                                                                                                                	// this type of resource. It may not match the resource version of the object,
                                                                                                                	// but if set it should be equal to or newer than the resource version of the
                                                                                                                	// object (however the server defines resource version).
                                                                                                                	ResourceVersion string
                                                                                                                	// Optional, should this resource be exported, stripped of cluster-specific and instance specific fields
                                                                                                                	Export bool
                                                                                                                }

                                                                                                                  Info contains temporary info to execute a REST call, or show the results of an already completed REST call.

                                                                                                                  func (*Info) Get

                                                                                                                  func (i *Info) Get() (err error)

                                                                                                                    Get retrieves the object from the Namespace and Name fields

                                                                                                                    func (*Info) Namespaced

                                                                                                                    func (i *Info) Namespaced() bool

                                                                                                                      Namespaced returns true if the object belongs to a namespace

                                                                                                                      func (*Info) ObjectName

                                                                                                                      func (i *Info) ObjectName() string

                                                                                                                        ObjectName returns an approximate form of the resource's kind/name.

                                                                                                                        func (*Info) Refresh

                                                                                                                        func (i *Info) Refresh(obj runtime.Object, ignoreError bool) error

                                                                                                                          Refresh updates the object with another object. If ignoreError is set the Object will be updated even if name, namespace, or resourceVersion attributes cannot be loaded from the object.

                                                                                                                          func (*Info) ResourceMapping

                                                                                                                          func (i *Info) ResourceMapping() *meta.RESTMapping

                                                                                                                            ResourceMapping returns the mapping for this resource and implements ResourceMapping

                                                                                                                            func (*Info) String

                                                                                                                            func (i *Info) String() string

                                                                                                                              String returns the general purpose string representation

                                                                                                                              func (*Info) Visit

                                                                                                                              func (i *Info) Visit(fn VisitorFunc) error

                                                                                                                                Visit implements Visitor

                                                                                                                                func (*Info) Watch

                                                                                                                                func (i *Info) Watch(resourceVersion string) (watch.Interface, error)

                                                                                                                                  Watch returns server changes to this object after it was retrieved.

                                                                                                                                  type InfoListVisitor

                                                                                                                                  type InfoListVisitor []*Info

                                                                                                                                  func (InfoListVisitor) Visit

                                                                                                                                  func (infos InfoListVisitor) Visit(fn VisitorFunc) error

                                                                                                                                  type KustomizeVisitor

                                                                                                                                  type KustomizeVisitor struct {
                                                                                                                                  	Path string
                                                                                                                                  	*StreamVisitor
                                                                                                                                  }

                                                                                                                                    KustomizeVisitor is wrapper around a StreamVisitor, to handle Kustomization directories

                                                                                                                                    func (*KustomizeVisitor) Visit

                                                                                                                                    func (v *KustomizeVisitor) Visit(fn VisitorFunc) error

                                                                                                                                      Visit in a KustomizeVisitor gets the output of Kustomize build and save it in the Streamvisitor

                                                                                                                                      type RESTClient

                                                                                                                                      type RESTClient interface {
                                                                                                                                      	Get() *rest.Request
                                                                                                                                      	Post() *rest.Request
                                                                                                                                      	Patch(types.PatchType) *rest.Request
                                                                                                                                      	Delete() *rest.Request
                                                                                                                                      	Put() *rest.Request
                                                                                                                                      }

                                                                                                                                        RESTClient is a client helper for dealing with RESTful resources in a generic way.

                                                                                                                                        func NewClientWithOptions

                                                                                                                                        func NewClientWithOptions(c RESTClient, transforms ...RequestTransform) RESTClient

                                                                                                                                          NewClientWithOptions wraps the provided RESTClient and invokes each transform on each newly created request.

                                                                                                                                          type RESTClientGetter

                                                                                                                                          type RESTClientGetter interface {
                                                                                                                                          	ToRESTConfig() (*rest.Config, error)
                                                                                                                                          	ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error)
                                                                                                                                          	ToRESTMapper() (meta.RESTMapper, error)
                                                                                                                                          }

                                                                                                                                          type RESTMapperFunc

                                                                                                                                          type RESTMapperFunc func() (meta.RESTMapper, error)

                                                                                                                                          type RequestTransform

                                                                                                                                          type RequestTransform func(*rest.Request)

                                                                                                                                            RequestTransform is a function that is given a chance to modify the outgoing request.

                                                                                                                                            type ResourceMapping

                                                                                                                                            type ResourceMapping interface {
                                                                                                                                            	ResourceMapping() *meta.RESTMapping
                                                                                                                                            }

                                                                                                                                              ResourceMapping allows an object to return the resource mapping associated with the resource or resources it represents.

                                                                                                                                              type Result

                                                                                                                                              type Result struct {
                                                                                                                                              	// contains filtered or unexported fields
                                                                                                                                              }

                                                                                                                                                Result contains helper methods for dealing with the outcome of a Builder.

                                                                                                                                                func (*Result) Err

                                                                                                                                                func (r *Result) Err() error

                                                                                                                                                  Err returns one or more errors (via a util.ErrorList) that occurred prior to visiting the elements in the visitor. To see all errors including those that occur during visitation, invoke Infos().

                                                                                                                                                  func (*Result) IgnoreErrors

                                                                                                                                                  func (r *Result) IgnoreErrors(fns ...ErrMatchFunc) *Result

                                                                                                                                                    IgnoreErrors will filter errors that occur when by visiting the result (but not errors that occur by creating the result in the first place), eliminating any that match fns. This is best used in combination with Builder.ContinueOnError(), where the visitors accumulate errors and return them after visiting as a slice of errors. If no errors remain after filtering, the various visitor methods on Result will return nil for err.

                                                                                                                                                    func (*Result) Infos

                                                                                                                                                    func (r *Result) Infos() ([]*Info, error)

                                                                                                                                                      Infos returns an array of all of the resource infos retrieved via traversal. Will attempt to traverse the entire set of visitors only once, and will return a cached list on subsequent calls.

                                                                                                                                                      func (*Result) IntoSingleItemImplied

                                                                                                                                                      func (r *Result) IntoSingleItemImplied(b *bool) *Result

                                                                                                                                                        IntoSingleItemImplied sets the provided boolean pointer to true if the Builder input implies a single item, or multiple.

                                                                                                                                                        func (*Result) Mapper

                                                                                                                                                        func (r *Result) Mapper() *mapper

                                                                                                                                                          Mapper returns a copy of the builder's mapper.

                                                                                                                                                          func (*Result) Object

                                                                                                                                                          func (r *Result) Object() (runtime.Object, error)

                                                                                                                                                            Object returns a single object representing the output of a single visit to all found resources. If the Builder was a singular context (expected to return a single resource by user input) and only a single resource was found, the resource will be returned as is. Otherwise, the returned resources will be part of an v1.List. The ResourceVersion of the v1.List will be set only if it is identical across all infos returned.

                                                                                                                                                            func (*Result) ResourceMapping

                                                                                                                                                            func (r *Result) ResourceMapping() (*meta.RESTMapping, error)

                                                                                                                                                              ResourceMapping returns a single meta.RESTMapping representing the resources located by the builder, or an error if more than one mapping was found.

                                                                                                                                                              func (*Result) TargetsSingleItems

                                                                                                                                                              func (r *Result) TargetsSingleItems() bool

                                                                                                                                                                TargetsSingleItems returns true if any of the builder arguments pointed to non-list calls (if the user explicitly asked for any object by name). This includes directories, streams, URLs, and resource name tuples.

                                                                                                                                                                func (*Result) Visit

                                                                                                                                                                func (r *Result) Visit(fn VisitorFunc) error

                                                                                                                                                                  Visit implements the Visitor interface on the items described in the Builder. Note that some visitor sources are not traversable more than once, or may return different results. If you wish to operate on the same set of resources multiple times, use the Infos() method.

                                                                                                                                                                  func (*Result) Watch

                                                                                                                                                                  func (r *Result) Watch(resourceVersion string) (watch.Interface, error)

                                                                                                                                                                    Watch retrieves changes that occur on the server to the specified resource. It currently supports watching a single source - if the resource source (selectors or pure types) can be watched, they will be, otherwise the list will be visited (equivalent to the Infos() call) and if there is a single resource present, it will be watched, otherwise an error will be returned.

                                                                                                                                                                    type Selector

                                                                                                                                                                    type Selector struct {
                                                                                                                                                                    	Client        RESTClient
                                                                                                                                                                    	Mapping       *meta.RESTMapping
                                                                                                                                                                    	Namespace     string
                                                                                                                                                                    	LabelSelector string
                                                                                                                                                                    	FieldSelector string
                                                                                                                                                                    	Export        bool
                                                                                                                                                                    	LimitChunks   int64
                                                                                                                                                                    }

                                                                                                                                                                      Selector is a Visitor for resources that match a label selector.

                                                                                                                                                                      func NewSelector

                                                                                                                                                                      func NewSelector(client RESTClient, mapping *meta.RESTMapping, namespace, labelSelector, fieldSelector string, export bool, limitChunks int64) *Selector

                                                                                                                                                                        NewSelector creates a resource selector which hides details of getting items by their label selector.

                                                                                                                                                                        func (*Selector) ResourceMapping

                                                                                                                                                                        func (r *Selector) ResourceMapping() *meta.RESTMapping

                                                                                                                                                                          ResourceMapping returns the mapping for this resource and implements ResourceMapping

                                                                                                                                                                          func (*Selector) Visit

                                                                                                                                                                          func (r *Selector) Visit(fn VisitorFunc) error

                                                                                                                                                                            Visit implements Visitor and uses request chunking by default.

                                                                                                                                                                            func (*Selector) Watch

                                                                                                                                                                            func (r *Selector) Watch(resourceVersion string) (watch.Interface, error)

                                                                                                                                                                            type StreamVisitor

                                                                                                                                                                            type StreamVisitor struct {
                                                                                                                                                                            	io.Reader
                                                                                                                                                                            
                                                                                                                                                                            	Source string
                                                                                                                                                                            	Schema ContentValidator
                                                                                                                                                                            	// contains filtered or unexported fields
                                                                                                                                                                            }

                                                                                                                                                                              StreamVisitor reads objects from an io.Reader and walks them. A stream visitor can only be visited once. TODO: depends on objects being in JSON format before being passed to decode - need to implement a stream decoder method on runtime.Codec to properly handle this.

                                                                                                                                                                              func NewStreamVisitor

                                                                                                                                                                              func NewStreamVisitor(r io.Reader, mapper *mapper, source string, schema ContentValidator) *StreamVisitor

                                                                                                                                                                                NewStreamVisitor is a helper function that is useful when we want to change the fields of the struct but keep calls the same.

                                                                                                                                                                                func (*StreamVisitor) Visit

                                                                                                                                                                                func (v *StreamVisitor) Visit(fn VisitorFunc) error

                                                                                                                                                                                  Visit implements Visitor over a stream. StreamVisitor is able to distinct multiple resources in one stream.

                                                                                                                                                                                  type URLVisitor

                                                                                                                                                                                  type URLVisitor struct {
                                                                                                                                                                                  	URL *url.URL
                                                                                                                                                                                  	*StreamVisitor
                                                                                                                                                                                  	HttpAttemptCount int
                                                                                                                                                                                  }

                                                                                                                                                                                    URLVisitor downloads the contents of a URL, and if successful, returns an info object representing the downloaded object.

                                                                                                                                                                                    func (*URLVisitor) Visit

                                                                                                                                                                                    func (v *URLVisitor) Visit(fn VisitorFunc) error

                                                                                                                                                                                    type Visitor

                                                                                                                                                                                    type Visitor interface {
                                                                                                                                                                                    	Visit(VisitorFunc) error
                                                                                                                                                                                    }

                                                                                                                                                                                      Visitor lets clients walk a list of resources.

                                                                                                                                                                                      func ExpandPathsToFileVisitors

                                                                                                                                                                                      func ExpandPathsToFileVisitors(mapper *mapper, paths string, recursive bool, extensions []string, schema ContentValidator) ([]Visitor, error)

                                                                                                                                                                                        ExpandPathsToFileVisitors will return a slice of FileVisitors that will handle files from the provided path. After FileVisitors open the files, they will pass an io.Reader to a StreamVisitor to do the reading. (stdin is also taken care of). Paths argument also accepts a single file, and will return a single visitor

                                                                                                                                                                                        func FileVisitorForSTDIN

                                                                                                                                                                                        func FileVisitorForSTDIN(mapper *mapper, schema ContentValidator) Visitor

                                                                                                                                                                                          FileVisitorForSTDIN return a special FileVisitor just for STDIN

                                                                                                                                                                                          func NewDecoratedVisitor

                                                                                                                                                                                          func NewDecoratedVisitor(v Visitor, fn ...VisitorFunc) Visitor

                                                                                                                                                                                            NewDecoratedVisitor will create a visitor that invokes the provided visitor functions before the user supplied visitor function is invoked, giving them the opportunity to mutate the Info object or terminate early with an error.

                                                                                                                                                                                            func NewFilteredVisitor

                                                                                                                                                                                            func NewFilteredVisitor(v Visitor, fn ...FilterFunc) Visitor

                                                                                                                                                                                            func NewFlattenListVisitor

                                                                                                                                                                                            func NewFlattenListVisitor(v Visitor, typer runtime.ObjectTyper, mapper *mapper) Visitor

                                                                                                                                                                                              NewFlattenListVisitor creates a visitor that will expand list style runtime.Objects into individual items and then visit them individually.

                                                                                                                                                                                              type VisitorFunc

                                                                                                                                                                                              type VisitorFunc func(*Info, error) error

                                                                                                                                                                                                VisitorFunc implements the Visitor interface for a matching function. If there was a problem walking a list of resources, the incoming error will describe the problem and the function can decide how to handle that error. A nil returned indicates to accept an error to continue loops even when errors happen. This is useful for ignoring certain kinds of errors or aggregating errors in some way.

                                                                                                                                                                                                func RequireNamespace

                                                                                                                                                                                                func RequireNamespace(namespace string) VisitorFunc

                                                                                                                                                                                                  RequireNamespace will either set a namespace if none is provided on the Info object, or if the namespace is set and does not match the provided value, returns an error. This is intended to guard against administrators accidentally operating on resources outside their namespace.

                                                                                                                                                                                                  func SetNamespace

                                                                                                                                                                                                  func SetNamespace(namespace string) VisitorFunc

                                                                                                                                                                                                    SetNamespace ensures that every Info object visited will have a namespace set. If info.Object is set, it will be mutated as well.

                                                                                                                                                                                                    type VisitorList

                                                                                                                                                                                                    type VisitorList []Visitor

                                                                                                                                                                                                      VisitorList implements Visit for the sub visitors it contains. The first error returned from a child Visitor will terminate iteration.

                                                                                                                                                                                                      func (VisitorList) Visit

                                                                                                                                                                                                      func (l VisitorList) Visit(fn VisitorFunc) error

                                                                                                                                                                                                        Visit implements Visitor

                                                                                                                                                                                                        type Watchable

                                                                                                                                                                                                        type Watchable interface {
                                                                                                                                                                                                        	Watch(resourceVersion string) (watch.Interface, error)
                                                                                                                                                                                                        }

                                                                                                                                                                                                          Watchable describes a resource that can be watched for changes that occur on the server, beginning after the provided resource version.