// InfoForData creates an Info object for the given data. An error is returned
// if any of the decoding or client lookup steps fail. Name and namespace will be
// set into Info if the mapping's MetadataAccessor can retrieve them.
func (m *Mapper) InfoForData(data []byte, source string) (*Info, error) {
versions := &runtime.VersionedObjects{}
_, gvk, err := m.Decode(data, nil, versions)
if err != nil {
return nil, fmt.Errorf("unable to decode %q: %v", source, err)
}
var obj runtime.Object
var versioned runtime.Object
if isThirdParty, gvkOut, err := thirdpartyresourcedata.IsThirdPartyObject(data, gvk); err != nil {
return nil, err
} else if isThirdParty {
obj, err = runtime.Decode(thirdpartyresourcedata.NewDecoder(nil, gvkOut.Kind), data)
versioned = obj
gvk = gvkOut
} else {
obj, versioned = versions.Last(), versions.First()
}
if err != nil {
return nil, fmt.Errorf("unable to decode %q: %v [%v]", source, err, gvk)
}
mapping, err := m.RESTMapping(gvk.GroupKind(), gvk.Version)
if err != nil {
return nil, fmt.Errorf("unable to recognize %q: %v", source, err)
}
client, err := m.ClientForMapping(mapping)
if err != nil {
return nil, fmt.Errorf("unable to connect to a server to handle %q: %v", mapping.Resource, err)
}
name, _ := mapping.MetadataAccessor.Name(obj)
namespace, _ := mapping.MetadataAccessor.Namespace(obj)
resourceVersion, _ := mapping.MetadataAccessor.ResourceVersion(obj)
return &Info{
Mapping: mapping,
Client: client,
Namespace: namespace,
Name: name,
Source: source,
VersionedObject: versioned,
Object: obj,
ResourceVersion: resourceVersion,
}, nil
}
// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
mapper := kubectl.ShortcutExpander{RESTMapper: registered.RESTMapper()}
flags := pflag.NewFlagSet("", pflag.ContinueOnError)
flags.SetNormalizeFunc(utilflag.WarnWordSepNormalizeFunc) // Warn for "_" flags
clientConfig := optionalClientConfig
if optionalClientConfig == nil {
clientConfig = DefaultClientConfig(flags)
}
clients := NewClientCache(clientConfig)
return &Factory{
clients: clients,
flags: flags,
// If discoverDynamicAPIs is true, make API calls to the discovery service to find APIs that
// have been dynamically added to the apiserver
Object: func(discoverDynamicAPIs bool) (meta.RESTMapper, runtime.ObjectTyper) {
cfg, err := clientConfig.ClientConfig()
checkErrWithPrefix("failed to get client config: ", err)
cmdApiVersion := unversioned.GroupVersion{}
if cfg.GroupVersion != nil {
cmdApiVersion = *cfg.GroupVersion
}
if discoverDynamicAPIs {
client, err := clients.ClientForVersion(&unversioned.GroupVersion{Version: "v1"})
checkErrWithPrefix("failed to find client for version v1: ", err)
var versions []unversioned.GroupVersion
var gvks []unversioned.GroupVersionKind
retries := 3
for i := 0; i < retries; i++ {
versions, gvks, err = GetThirdPartyGroupVersions(client.Discovery())
// Retry if we got a NotFound error, because user may delete
// a thirdparty group when the GetThirdPartyGroupVersions is
// running.
if err == nil || !apierrors.IsNotFound(err) {
break
}
}
checkErrWithPrefix("failed to get third-party group versions: ", err)
if len(versions) > 0 {
priorityMapper, ok := mapper.RESTMapper.(meta.PriorityRESTMapper)
if !ok {
CheckErr(fmt.Errorf("expected PriorityMapper, saw: %v", mapper.RESTMapper))
return nil, nil
}
multiMapper, ok := priorityMapper.Delegate.(meta.MultiRESTMapper)
if !ok {
CheckErr(fmt.Errorf("unexpected type: %v", mapper.RESTMapper))
return nil, nil
}
groupsMap := map[string][]unversioned.GroupVersion{}
for _, version := range versions {
groupsMap[version.Group] = append(groupsMap[version.Group], version)
}
for group, versionList := range groupsMap {
preferredExternalVersion := versionList[0]
thirdPartyMapper, err := kubectl.NewThirdPartyResourceMapper(versionList, getGroupVersionKinds(gvks, group))
checkErrWithPrefix("failed to create third party resource mapper: ", err)
accessor := meta.NewAccessor()
groupMeta := apimachinery.GroupMeta{
GroupVersion: preferredExternalVersion,
GroupVersions: versionList,
RESTMapper: thirdPartyMapper,
SelfLinker: runtime.SelfLinker(accessor),
InterfacesFor: makeInterfacesFor(versionList),
}
checkErrWithPrefix("failed to register group: ", registered.RegisterGroup(groupMeta))
registered.AddThirdPartyAPIGroupVersions(versionList...)
multiMapper = append(meta.MultiRESTMapper{thirdPartyMapper}, multiMapper...)
}
priorityMapper.Delegate = multiMapper
// Re-assign to the RESTMapper here because priorityMapper is actually a copy, so if we
// don't re-assign, the above assignement won't actually update mapper.RESTMapper
mapper.RESTMapper = priorityMapper
}
}
outputRESTMapper := kubectl.OutputVersionMapper{RESTMapper: mapper, OutputVersions: []unversioned.GroupVersion{cmdApiVersion}}
priorityRESTMapper := meta.PriorityRESTMapper{
Delegate: outputRESTMapper,
ResourcePriority: []unversioned.GroupVersionResource{
{Group: api.GroupName, Version: meta.AnyVersion, Resource: meta.AnyResource},
{Group: autoscaling.GroupName, Version: meta.AnyVersion, Resource: meta.AnyResource},
{Group: extensions.GroupName, Version: meta.AnyVersion, Resource: meta.AnyResource},
{Group: federation.GroupName, Version: meta.AnyVersion, Resource: meta.AnyResource},
},
KindPriority: []unversioned.GroupVersionKind{
{Group: api.GroupName, Version: meta.AnyVersion, Kind: meta.AnyKind},
{Group: autoscaling.GroupName, Version: meta.AnyVersion, Kind: meta.AnyKind},
{Group: extensions.GroupName, Version: meta.AnyVersion, Kind: meta.AnyKind},
{Group: federation.GroupName, Version: meta.AnyVersion, Kind: meta.AnyKind},
},
}
return priorityRESTMapper, api.Scheme
},
Client: func() (*client.Client, error) {
return clients.ClientForVersion(nil)
},
ClientConfig: func() (*restclient.Config, error) {
return clients.ClientConfigForVersion(nil)
},
ClientForMapping: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
gvk := mapping.GroupVersionKind
mappingVersion := mapping.GroupVersionKind.GroupVersion()
c, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
switch gvk.Group {
case api.GroupName:
return c.RESTClient, nil
case autoscaling.GroupName:
return c.AutoscalingClient.RESTClient, nil
case batch.GroupName:
return c.BatchClient.RESTClient, nil
case policy.GroupName:
return c.PolicyClient.RESTClient, nil
case apps.GroupName:
return c.AppsClient.RESTClient, nil
case extensions.GroupName:
return c.ExtensionsClient.RESTClient, nil
case api.SchemeGroupVersion.Group:
return c.RESTClient, nil
case extensions.SchemeGroupVersion.Group:
return c.ExtensionsClient.RESTClient, nil
case federation.GroupName:
return clients.FederationClientForVersion(&mappingVersion)
case rbac.GroupName:
return c.RbacClient.RESTClient, nil
default:
if !registered.IsThirdPartyAPIGroupVersion(gvk.GroupVersion()) {
return nil, fmt.Errorf("unknown api group/version: %s", gvk.String())
}
cfg, err := clientConfig.ClientConfig()
if err != nil {
return nil, err
}
gv := gvk.GroupVersion()
cfg.GroupVersion = &gv
cfg.APIPath = "/apis"
cfg.Codec = thirdpartyresourcedata.NewCodec(c.ExtensionsClient.RESTClient.Codec(), gvk)
cfg.NegotiatedSerializer = thirdpartyresourcedata.NewNegotiatedSerializer(api.Codecs, gvk.Kind, gv, gv)
return restclient.RESTClientFor(cfg)
}
},
Describer: func(mapping *meta.RESTMapping) (kubectl.Describer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
if mapping.GroupVersionKind.Group == federation.GroupName {
fedClientSet, err := clients.FederationClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
if mapping.GroupVersionKind.Kind == "Cluster" {
return &kubectl.ClusterDescriber{Interface: fedClientSet}, nil
}
}
client, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
if describer, ok := kubectl.DescriberFor(mapping.GroupVersionKind.GroupKind(), client); ok {
return describer, nil
}
return nil, fmt.Errorf("no description has been implemented for %q", mapping.GroupVersionKind.Kind)
},
Decoder: func(toInternal bool) runtime.Decoder {
var decoder runtime.Decoder
if toInternal {
decoder = api.Codecs.UniversalDecoder()
} else {
decoder = api.Codecs.UniversalDeserializer()
}
return thirdpartyresourcedata.NewDecoder(decoder, "")
},
JSONEncoder: func() runtime.Encoder {
return api.Codecs.LegacyCodec(registered.EnabledVersions()...)
},
Printer: func(mapping *meta.RESTMapping, noHeaders, withNamespace bool, wide bool, showAll bool, showLabels bool, absoluteTimestamps bool, columnLabels []string) (kubectl.ResourcePrinter, error) {
return kubectl.NewHumanReadablePrinter(noHeaders, withNamespace, wide, showAll, showLabels, absoluteTimestamps, columnLabels), nil
},
MapBasedSelectorForObject: func(object runtime.Object) (string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return kubectl.MakeLabels(t.Spec.Selector), nil
case *api.Pod:
if len(t.Labels) == 0 {
return "", fmt.Errorf("the pod has no labels and cannot be exposed")
}
return kubectl.MakeLabels(t.Labels), nil
case *api.Service:
if t.Spec.Selector == nil {
return "", fmt.Errorf("the service has no pod selector set")
}
return kubectl.MakeLabels(t.Spec.Selector), nil
case *extensions.Deployment:
// TODO(madhusudancs): Make this smarter by admitting MatchExpressions with Equals
// operator, DoubleEquals operator and In operator with only one element in the set.
if len(t.Spec.Selector.MatchExpressions) > 0 {
return "", fmt.Errorf("couldn't convert expressions - \"%+v\" to map-based selector format", t.Spec.Selector.MatchExpressions)
}
return kubectl.MakeLabels(t.Spec.Selector.MatchLabels), nil
case *extensions.ReplicaSet:
// TODO(madhusudancs): Make this smarter by admitting MatchExpressions with Equals
// operator, DoubleEquals operator and In operator with only one element in the set.
if len(t.Spec.Selector.MatchExpressions) > 0 {
return "", fmt.Errorf("couldn't convert expressions - \"%+v\" to map-based selector format", t.Spec.Selector.MatchExpressions)
}
return kubectl.MakeLabels(t.Spec.Selector.MatchLabels), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return "", err
}
return "", fmt.Errorf("cannot extract pod selector from %v", gvks[0])
}
},
PortsForObject: func(object runtime.Object) ([]string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return getPorts(t.Spec.Template.Spec), nil
case *api.Pod:
return getPorts(t.Spec), nil
case *api.Service:
return getServicePorts(t.Spec), nil
case *extensions.Deployment:
return getPorts(t.Spec.Template.Spec), nil
case *extensions.ReplicaSet:
return getPorts(t.Spec.Template.Spec), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot extract ports from %v", gvks[0])
}
},
ProtocolsForObject: func(object runtime.Object) (map[string]string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return getProtocols(t.Spec.Template.Spec), nil
case *api.Pod:
return getProtocols(t.Spec), nil
case *api.Service:
return getServiceProtocols(t.Spec), nil
case *extensions.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *extensions.ReplicaSet:
return getProtocols(t.Spec.Template.Spec), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot extract protocols from %v", gvks[0])
}
},
LabelsForObject: func(object runtime.Object) (map[string]string, error) {
return meta.NewAccessor().Labels(object)
},
LogsForObject: func(object, options runtime.Object) (*restclient.Request, error) {
c, err := clients.ClientForVersion(nil)
if err != nil {
return nil, err
}
switch t := object.(type) {
case *api.Pod:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
return c.Pods(t.Namespace).GetLogs(t.Name, opts), nil
case *api.ReplicationController:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
selector := labels.SelectorFromSet(t.Spec.Selector)
sortBy := func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) }
pod, numPods, err := GetFirstPod(c, t.Namespace, selector, 20*time.Second, sortBy)
if err != nil {
return nil, err
}
if numPods > 1 {
fmt.Fprintf(os.Stderr, "Found %v pods, using pod/%v\n", numPods, pod.Name)
}
return c.Pods(pod.Namespace).GetLogs(pod.Name, opts), nil
case *extensions.ReplicaSet:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) }
pod, numPods, err := GetFirstPod(c, t.Namespace, selector, 20*time.Second, sortBy)
if err != nil {
return nil, err
}
if numPods > 1 {
fmt.Fprintf(os.Stderr, "Found %v pods, using pod/%v\n", numPods, pod.Name)
}
return c.Pods(pod.Namespace).GetLogs(pod.Name, opts), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot get the logs from %v", gvks[0])
}
},
PauseObject: func(object runtime.Object) (bool, error) {
c, err := clients.ClientForVersion(nil)
if err != nil {
return false, err
}
switch t := object.(type) {
case *extensions.Deployment:
if t.Spec.Paused {
return true, nil
}
t.Spec.Paused = true
_, err := c.Extensions().Deployments(t.Namespace).Update(t)
return false, err
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return false, err
}
return false, fmt.Errorf("cannot pause %v", gvks[0])
}
},
ResumeObject: func(object runtime.Object) (bool, error) {
c, err := clients.ClientForVersion(nil)
if err != nil {
return false, err
}
switch t := object.(type) {
case *extensions.Deployment:
if !t.Spec.Paused {
return true, nil
}
t.Spec.Paused = false
_, err := c.Extensions().Deployments(t.Namespace).Update(t)
return false, err
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return false, err
}
return false, fmt.Errorf("cannot resume %v", gvks[0])
}
},
Scaler: func(mapping *meta.RESTMapping) (kubectl.Scaler, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
client, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.ScalerFor(mapping.GroupVersionKind.GroupKind(), client)
},
Reaper: func(mapping *meta.RESTMapping) (kubectl.Reaper, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
client, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.ReaperFor(mapping.GroupVersionKind.GroupKind(), client)
},
HistoryViewer: func(mapping *meta.RESTMapping) (kubectl.HistoryViewer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
client, err := clients.ClientForVersion(&mappingVersion)
clientset := clientset.FromUnversionedClient(client)
if err != nil {
return nil, err
}
return kubectl.HistoryViewerFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
Rollbacker: func(mapping *meta.RESTMapping) (kubectl.Rollbacker, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
client, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.RollbackerFor(mapping.GroupVersionKind.GroupKind(), client)
},
StatusViewer: func(mapping *meta.RESTMapping) (kubectl.StatusViewer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
client, err := clients.ClientForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.StatusViewerFor(mapping.GroupVersionKind.GroupKind(), client)
},
Validator: func(validate bool, cacheDir string) (validation.Schema, error) {
if validate {
client, err := clients.ClientForVersion(nil)
if err != nil {
return nil, err
}
dir := cacheDir
if len(dir) > 0 {
version, err := client.ServerVersion()
if err != nil {
return nil, err
}
dir = path.Join(cacheDir, version.String())
}
fedClient, err := clients.FederationClientForVersion(nil)
if err != nil {
return nil, err
}
return &clientSwaggerSchema{
c: client,
fedc: fedClient,
cacheDir: dir,
mapper: api.RESTMapper,
}, nil
}
return validation.NullSchema{}, nil
},
SwaggerSchema: func(gvk unversioned.GroupVersionKind) (*swagger.ApiDeclaration, error) {
version := gvk.GroupVersion()
client, err := clients.ClientForVersion(&version)
if err != nil {
return nil, err
}
return client.Discovery().SwaggerSchema(version)
},
DefaultNamespace: func() (string, bool, error) {
return clientConfig.Namespace()
},
Generators: func(cmdName string) map[string]kubectl.Generator {
return DefaultGenerators(cmdName)
},
CanBeExposed: func(kind unversioned.GroupKind) error {
switch kind {
case api.Kind("ReplicationController"), api.Kind("Service"), api.Kind("Pod"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
// nothing to do here
default:
return fmt.Errorf("cannot expose a %s", kind)
}
return nil
},
CanBeAutoscaled: func(kind unversioned.GroupKind) error {
switch kind {
case api.Kind("ReplicationController"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
// nothing to do here
default:
return fmt.Errorf("cannot autoscale a %v", kind)
}
return nil
},
AttachablePodForObject: func(object runtime.Object) (*api.Pod, error) {
client, err := clients.ClientForVersion(nil)
if err != nil {
return nil, err
}
switch t := object.(type) {
case *api.ReplicationController:
selector := labels.SelectorFromSet(t.Spec.Selector)
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *extensions.Deployment:
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *batch.Job:
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *api.Pod:
return t, nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot attach to %v: not implemented", gvks[0])
}
},
// UpdatePodSpecForObject update the pod specification for the provided object
UpdatePodSpecForObject: func(obj runtime.Object, fn func(*api.PodSpec) error) (bool, error) {
// TODO: replace with a swagger schema based approach (identify pod template via schema introspection)
switch t := obj.(type) {
case *api.Pod:
return true, fn(&t.Spec)
case *api.ReplicationController:
if t.Spec.Template == nil {
t.Spec.Template = &api.PodTemplateSpec{}
}
return true, fn(&t.Spec.Template.Spec)
case *extensions.Deployment:
return true, fn(&t.Spec.Template.Spec)
case *extensions.DaemonSet:
return true, fn(&t.Spec.Template.Spec)
case *extensions.ReplicaSet:
return true, fn(&t.Spec.Template.Spec)
case *apps.PetSet:
return true, fn(&t.Spec.Template.Spec)
case *batch.Job:
return true, fn(&t.Spec.Template.Spec)
default:
return false, fmt.Errorf("the object is not a pod or does not have a pod template")
}
},
EditorEnvs: func() []string {
return []string{"KUBE_EDITOR", "EDITOR"}
},
PrintObjectSpecificMessage: func(obj runtime.Object, out io.Writer) {
switch obj := obj.(type) {
case *api.Service:
if obj.Spec.Type == api.ServiceTypeNodePort {
msg := fmt.Sprintf(
`You have exposed your service on an external port on all nodes in your
cluster. If you want to expose this service to the external internet, you may
need to set up firewall rules for the service port(s) (%s) to serve traffic.
See http://releases.k8s.io/HEAD/docs/user-guide/services-firewalls.md for more details.
`,
makePortsString(obj.Spec.Ports, true))
out.Write([]byte(msg))
}
if _, ok := obj.Annotations[service.AnnotationLoadBalancerSourceRangesKey]; ok {
msg := fmt.Sprintf(
`You are using service annotation [service.beta.kubernetes.io/load-balancer-source-ranges].
It has been promoted to field [loadBalancerSourceRanges] in service spec. This annotation will be deprecated in the future.
Please use the loadBalancerSourceRanges field instead.
See http://releases.k8s.io/HEAD/docs/user-guide/services-firewalls.md for more details.
`)
out.Write([]byte(msg))
}
}
},
}
}
// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
flags := pflag.NewFlagSet("", pflag.ContinueOnError)
flags.SetNormalizeFunc(utilflag.WarnWordSepNormalizeFunc) // Warn for "_" flags
clientConfig := optionalClientConfig
if optionalClientConfig == nil {
clientConfig = DefaultClientConfig(flags)
}
clients := NewClientCache(clientConfig)
return &Factory{
clients: clients,
flags: flags,
Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
cfg, err := clientConfig.ClientConfig()
checkErrWithPrefix("failed to get client config: ", err)
cmdApiVersion := unversioned.GroupVersion{}
if cfg.GroupVersion != nil {
cmdApiVersion = *cfg.GroupVersion
}
mapper := registered.RESTMapper()
discoveryClient, err := discovery.NewDiscoveryClientForConfig(cfg)
// if we can find the server version and it's current enough to have discovery information, use it. Otherwise,
// fallback to our hardcoded list
if err == nil {
if serverVersion, err := discoveryClient.ServerVersion(); err == nil && useDiscoveryRESTMapper(serverVersion.GitVersion) {
// register third party resources with the api machinery groups. This probably should be done, but
// its consistent with old code, so we'll start with it.
if err := registerThirdPartyResources(discoveryClient); err != nil {
fmt.Fprintf(os.Stderr, "Unable to register third party resources: %v\n", err)
}
// ThirdPartyResourceData is special. It's not discoverable, but needed for thirdparty resource listing
// TODO eliminate this once we're truly generic.
thirdPartyResourceDataMapper := meta.NewDefaultRESTMapper([]unversioned.GroupVersion{extensionsv1beta1.SchemeGroupVersion}, registered.InterfacesFor)
thirdPartyResourceDataMapper.Add(extensionsv1beta1.SchemeGroupVersion.WithKind("ThirdPartyResourceData"), meta.RESTScopeNamespace)
mapper = meta.FirstHitRESTMapper{
MultiRESTMapper: meta.MultiRESTMapper{
discovery.NewDeferredDiscoveryRESTMapper(discoveryClient, registered.InterfacesFor),
thirdPartyResourceDataMapper,
},
}
}
}
// wrap with shortcuts
mapper = NewShortcutExpander(mapper, discoveryClient)
// wrap with output preferences
mapper = kubectl.OutputVersionMapper{RESTMapper: mapper, OutputVersions: []unversioned.GroupVersion{cmdApiVersion}}
return mapper, api.Scheme
},
UnstructuredObject: func() (meta.RESTMapper, runtime.ObjectTyper, error) {
cfg, err := clients.ClientConfigForVersion(nil)
if err != nil {
return nil, nil, err
}
dc, err := discovery.NewDiscoveryClientForConfig(cfg)
if err != nil {
return nil, nil, err
}
groupResources, err := discovery.GetAPIGroupResources(dc)
if err != nil {
return nil, nil, err
}
// Register unknown APIs as third party for now to make
// validation happy. TODO perhaps make a dynamic schema
// validator to avoid this.
for _, group := range groupResources {
for _, version := range group.Group.Versions {
gv := unversioned.GroupVersion{Group: group.Group.Name, Version: version.Version}
if !registered.IsRegisteredVersion(gv) {
registered.AddThirdPartyAPIGroupVersions(gv)
}
}
}
mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructured)
typer := discovery.NewUnstructuredObjectTyper(groupResources)
return NewShortcutExpander(mapper, dc), typer, nil
},
RESTClient: func() (*restclient.RESTClient, error) {
clientConfig, err := clients.ClientConfigForVersion(nil)
if err != nil {
return nil, err
}
return restclient.RESTClientFor(clientConfig)
},
ClientSet: func() (*internalclientset.Clientset, error) {
return clients.ClientSetForVersion(nil)
},
ClientConfig: func() (*restclient.Config, error) {
return clients.ClientConfigForVersion(nil)
},
ClientForMapping: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
cfg, err := clientConfig.ClientConfig()
if err != nil {
return nil, err
}
if err := client.SetKubernetesDefaults(cfg); err != nil {
return nil, err
}
gvk := mapping.GroupVersionKind
switch gvk.Group {
case federation.GroupName:
mappingVersion := mapping.GroupVersionKind.GroupVersion()
return clients.FederationClientForVersion(&mappingVersion)
case api.GroupName:
cfg.APIPath = "/api"
default:
cfg.APIPath = "/apis"
}
gv := gvk.GroupVersion()
cfg.GroupVersion = &gv
if registered.IsThirdPartyAPIGroupVersion(gvk.GroupVersion()) {
cfg.NegotiatedSerializer = thirdpartyresourcedata.NewNegotiatedSerializer(api.Codecs, gvk.Kind, gv, gv)
}
return restclient.RESTClientFor(cfg)
},
UnstructuredClientForMapping: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
cfg, err := clientConfig.ClientConfig()
if err != nil {
return nil, err
}
if err := restclient.SetKubernetesDefaults(cfg); err != nil {
return nil, err
}
cfg.APIPath = "/apis"
if mapping.GroupVersionKind.Group == api.GroupName {
cfg.APIPath = "/api"
}
gv := mapping.GroupVersionKind.GroupVersion()
cfg.ContentConfig = dynamic.ContentConfig()
cfg.GroupVersion = &gv
return restclient.RESTClientFor(cfg)
},
Describer: func(mapping *meta.RESTMapping) (kubectl.Describer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
if mapping.GroupVersionKind.Group == federation.GroupName {
fedClientSet, err := clients.FederationClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
if mapping.GroupVersionKind.Kind == "Cluster" {
return &kubectl.ClusterDescriber{Interface: fedClientSet}, nil
}
}
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
if describer, ok := kubectl.DescriberFor(mapping.GroupVersionKind.GroupKind(), clientset); ok {
return describer, nil
}
return nil, fmt.Errorf("no description has been implemented for %q", mapping.GroupVersionKind.Kind)
},
Decoder: func(toInternal bool) runtime.Decoder {
var decoder runtime.Decoder
if toInternal {
decoder = api.Codecs.UniversalDecoder()
} else {
decoder = api.Codecs.UniversalDeserializer()
}
return thirdpartyresourcedata.NewDecoder(decoder, "")
},
JSONEncoder: func() runtime.Encoder {
return api.Codecs.LegacyCodec(registered.EnabledVersions()...)
},
Printer: func(mapping *meta.RESTMapping, options kubectl.PrintOptions) (kubectl.ResourcePrinter, error) {
return kubectl.NewHumanReadablePrinter(options), nil
},
MapBasedSelectorForObject: func(object runtime.Object) (string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return kubectl.MakeLabels(t.Spec.Selector), nil
case *api.Pod:
if len(t.Labels) == 0 {
return "", fmt.Errorf("the pod has no labels and cannot be exposed")
}
return kubectl.MakeLabels(t.Labels), nil
case *api.Service:
if t.Spec.Selector == nil {
return "", fmt.Errorf("the service has no pod selector set")
}
return kubectl.MakeLabels(t.Spec.Selector), nil
case *extensions.Deployment:
// TODO(madhusudancs): Make this smarter by admitting MatchExpressions with Equals
// operator, DoubleEquals operator and In operator with only one element in the set.
if len(t.Spec.Selector.MatchExpressions) > 0 {
return "", fmt.Errorf("couldn't convert expressions - \"%+v\" to map-based selector format", t.Spec.Selector.MatchExpressions)
}
return kubectl.MakeLabels(t.Spec.Selector.MatchLabels), nil
case *extensions.ReplicaSet:
// TODO(madhusudancs): Make this smarter by admitting MatchExpressions with Equals
// operator, DoubleEquals operator and In operator with only one element in the set.
if len(t.Spec.Selector.MatchExpressions) > 0 {
return "", fmt.Errorf("couldn't convert expressions - \"%+v\" to map-based selector format", t.Spec.Selector.MatchExpressions)
}
return kubectl.MakeLabels(t.Spec.Selector.MatchLabels), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return "", err
}
return "", fmt.Errorf("cannot extract pod selector from %v", gvks[0])
}
},
PortsForObject: func(object runtime.Object) ([]string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return getPorts(t.Spec.Template.Spec), nil
case *api.Pod:
return getPorts(t.Spec), nil
case *api.Service:
return getServicePorts(t.Spec), nil
case *extensions.Deployment:
return getPorts(t.Spec.Template.Spec), nil
case *extensions.ReplicaSet:
return getPorts(t.Spec.Template.Spec), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot extract ports from %v", gvks[0])
}
},
ProtocolsForObject: func(object runtime.Object) (map[string]string, error) {
// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
switch t := object.(type) {
case *api.ReplicationController:
return getProtocols(t.Spec.Template.Spec), nil
case *api.Pod:
return getProtocols(t.Spec), nil
case *api.Service:
return getServiceProtocols(t.Spec), nil
case *extensions.Deployment:
return getProtocols(t.Spec.Template.Spec), nil
case *extensions.ReplicaSet:
return getProtocols(t.Spec.Template.Spec), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot extract protocols from %v", gvks[0])
}
},
LabelsForObject: func(object runtime.Object) (map[string]string, error) {
return meta.NewAccessor().Labels(object)
},
LogsForObject: func(object, options runtime.Object) (*restclient.Request, error) {
clientset, err := clients.ClientSetForVersion(nil)
if err != nil {
return nil, err
}
switch t := object.(type) {
case *api.Pod:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
return clientset.Core().Pods(t.Namespace).GetLogs(t.Name, opts), nil
case *api.ReplicationController:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
selector := labels.SelectorFromSet(t.Spec.Selector)
sortBy := func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) }
pod, numPods, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 20*time.Second, sortBy)
if err != nil {
return nil, err
}
if numPods > 1 {
fmt.Fprintf(os.Stderr, "Found %v pods, using pod/%v\n", numPods, pod.Name)
}
return clientset.Core().Pods(pod.Namespace).GetLogs(pod.Name, opts), nil
case *extensions.ReplicaSet:
opts, ok := options.(*api.PodLogOptions)
if !ok {
return nil, errors.New("provided options object is not a PodLogOptions")
}
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) }
pod, numPods, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 20*time.Second, sortBy)
if err != nil {
return nil, err
}
if numPods > 1 {
fmt.Fprintf(os.Stderr, "Found %v pods, using pod/%v\n", numPods, pod.Name)
}
return clientset.Core().Pods(pod.Namespace).GetLogs(pod.Name, opts), nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot get the logs from %v", gvks[0])
}
},
PauseObject: func(object runtime.Object) (bool, error) {
clientset, err := clients.ClientSetForVersion(nil)
if err != nil {
return false, err
}
switch t := object.(type) {
case *extensions.Deployment:
if t.Spec.Paused {
return true, nil
}
t.Spec.Paused = true
_, err := clientset.Extensions().Deployments(t.Namespace).Update(t)
return false, err
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return false, err
}
return false, fmt.Errorf("cannot pause %v", gvks[0])
}
},
ResumeObject: func(object runtime.Object) (bool, error) {
clientset, err := clients.ClientSetForVersion(nil)
if err != nil {
return false, err
}
switch t := object.(type) {
case *extensions.Deployment:
if !t.Spec.Paused {
return true, nil
}
t.Spec.Paused = false
_, err := clientset.Extensions().Deployments(t.Namespace).Update(t)
return false, err
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return false, err
}
return false, fmt.Errorf("cannot resume %v", gvks[0])
}
},
Scaler: func(mapping *meta.RESTMapping) (kubectl.Scaler, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.ScalerFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
Reaper: func(mapping *meta.RESTMapping) (kubectl.Reaper, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.ReaperFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
HistoryViewer: func(mapping *meta.RESTMapping) (kubectl.HistoryViewer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.HistoryViewerFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
Rollbacker: func(mapping *meta.RESTMapping) (kubectl.Rollbacker, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.RollbackerFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
StatusViewer: func(mapping *meta.RESTMapping) (kubectl.StatusViewer, error) {
mappingVersion := mapping.GroupVersionKind.GroupVersion()
clientset, err := clients.ClientSetForVersion(&mappingVersion)
if err != nil {
return nil, err
}
return kubectl.StatusViewerFor(mapping.GroupVersionKind.GroupKind(), clientset)
},
Validator: func(validate bool, cacheDir string) (validation.Schema, error) {
if validate {
clientConfig, err := clients.ClientConfigForVersion(nil)
if err != nil {
return nil, err
}
restclient, err := restclient.RESTClientFor(clientConfig)
if err != nil {
return nil, err
}
clientset, err := clients.ClientSetForVersion(nil)
if err != nil {
return nil, err
}
dir := cacheDir
if len(dir) > 0 {
version, err := clientset.Discovery().ServerVersion()
if err != nil {
return nil, err
}
dir = path.Join(cacheDir, version.String())
}
fedClient, err := clients.FederationClientForVersion(nil)
if err != nil {
return nil, err
}
return &clientSwaggerSchema{
c: restclient,
fedc: fedClient,
cacheDir: dir,
}, nil
}
return validation.NullSchema{}, nil
},
SwaggerSchema: func(gvk unversioned.GroupVersionKind) (*swagger.ApiDeclaration, error) {
version := gvk.GroupVersion()
clientset, err := clients.ClientSetForVersion(&version)
if err != nil {
return nil, err
}
return clientset.Discovery().SwaggerSchema(version)
},
DefaultNamespace: func() (string, bool, error) {
return clientConfig.Namespace()
},
Generators: func(cmdName string) map[string]kubectl.Generator {
return DefaultGenerators(cmdName)
},
CanBeExposed: func(kind unversioned.GroupKind) error {
switch kind {
case api.Kind("ReplicationController"), api.Kind("Service"), api.Kind("Pod"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
// nothing to do here
default:
return fmt.Errorf("cannot expose a %s", kind)
}
return nil
},
CanBeAutoscaled: func(kind unversioned.GroupKind) error {
switch kind {
case api.Kind("ReplicationController"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
// nothing to do here
default:
return fmt.Errorf("cannot autoscale a %v", kind)
}
return nil
},
AttachablePodForObject: func(object runtime.Object) (*api.Pod, error) {
clientset, err := clients.ClientSetForVersion(nil)
if err != nil {
return nil, err
}
switch t := object.(type) {
case *api.ReplicationController:
selector := labels.SelectorFromSet(t.Spec.Selector)
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *extensions.Deployment:
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *batch.Job:
selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("invalid label selector: %v", err)
}
sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
return pod, err
case *api.Pod:
return t, nil
default:
gvks, _, err := api.Scheme.ObjectKinds(object)
if err != nil {
return nil, err
}
return nil, fmt.Errorf("cannot attach to %v: not implemented", gvks[0])
}
},
// UpdatePodSpecForObject update the pod specification for the provided object
UpdatePodSpecForObject: func(obj runtime.Object, fn func(*api.PodSpec) error) (bool, error) {
// TODO: replace with a swagger schema based approach (identify pod template via schema introspection)
switch t := obj.(type) {
case *api.Pod:
return true, fn(&t.Spec)
case *api.ReplicationController:
if t.Spec.Template == nil {
t.Spec.Template = &api.PodTemplateSpec{}
}
return true, fn(&t.Spec.Template.Spec)
case *extensions.Deployment:
return true, fn(&t.Spec.Template.Spec)
case *extensions.DaemonSet:
return true, fn(&t.Spec.Template.Spec)
case *extensions.ReplicaSet:
return true, fn(&t.Spec.Template.Spec)
case *apps.PetSet:
return true, fn(&t.Spec.Template.Spec)
case *batch.Job:
return true, fn(&t.Spec.Template.Spec)
default:
return false, fmt.Errorf("the object is not a pod or does not have a pod template")
}
},
EditorEnvs: func() []string {
return []string{"KUBE_EDITOR", "EDITOR"}
},
PrintObjectSpecificMessage: func(obj runtime.Object, out io.Writer) {
switch obj := obj.(type) {
case *api.Service:
if obj.Spec.Type == api.ServiceTypeNodePort {
msg := fmt.Sprintf(
`You have exposed your service on an external port on all nodes in your
cluster. If you want to expose this service to the external internet, you may
need to set up firewall rules for the service port(s) (%s) to serve traffic.
See http://releases.k8s.io/HEAD/docs/user-guide/services-firewalls.md for more details.
`,
makePortsString(obj.Spec.Ports, true))
out.Write([]byte(msg))
}
if _, ok := obj.Annotations[service.AnnotationLoadBalancerSourceRangesKey]; ok {
msg := fmt.Sprintf(
`You are using service annotation [service.beta.kubernetes.io/load-balancer-source-ranges].
It has been promoted to field [loadBalancerSourceRanges] in service spec. This annotation will be deprecated in the future.
Please use the loadBalancerSourceRanges field instead.
See http://releases.k8s.io/HEAD/docs/user-guide/services-firewalls.md for more details.
`)
out.Write([]byte(msg))
}
}
},
}
}