diff --git a/hack/.golint_failures b/hack/.golint_failures index dd074d20ef68b..85c525427a7a2 100644 --- a/hack/.golint_failures +++ b/hack/.golint_failures @@ -715,6 +715,11 @@ staging/src/k8s.io/client-go/plugin/pkg/auth/authenticator/token/oidc/testing staging/src/k8s.io/client-go/plugin/pkg/client/auth/oidc staging/src/k8s.io/client-go/rest staging/src/k8s.io/client-go/rest/fake +staging/src/k8s.io/client-go/scale +staging/src/k8s.io/client-go/scale/scheme +staging/src/k8s.io/client-go/scale/scheme/autoscalingv1 +staging/src/k8s.io/client-go/scale/scheme/extensionsint +staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1 staging/src/k8s.io/client-go/testing staging/src/k8s.io/client-go/tools/cache staging/src/k8s.io/client-go/tools/cache/testing diff --git a/staging/BUILD b/staging/BUILD index 7b541e908a554..9e946f763cfa3 100644 --- a/staging/BUILD +++ b/staging/BUILD @@ -167,6 +167,7 @@ filegroup( "//staging/src/k8s.io/client-go/plugin/pkg/auth/authenticator/token/oidc/testing:all-srcs", "//staging/src/k8s.io/client-go/plugin/pkg/client/auth:all-srcs", "//staging/src/k8s.io/client-go/rest:all-srcs", + "//staging/src/k8s.io/client-go/scale:all-srcs", "//staging/src/k8s.io/client-go/testing:all-srcs", "//staging/src/k8s.io/client-go/third_party/forked/golang/template:all-srcs", "//staging/src/k8s.io/client-go/tools/auth:all-srcs", diff --git a/staging/src/k8s.io/client-go/Godeps/Godeps.json b/staging/src/k8s.io/client-go/Godeps/Godeps.json index 8216e65bdd7d0..23da5fd2b3953 100644 --- a/staging/src/k8s.io/client-go/Godeps/Godeps.json +++ b/staging/src/k8s.io/client-go/Godeps/Godeps.json @@ -490,14 +490,34 @@ "ImportPath": "k8s.io/apimachinery/pkg/api/resource", "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" }, + { + "ImportPath": "k8s.io/apimachinery/pkg/api/testing", + "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + }, + { + "ImportPath": "k8s.io/apimachinery/pkg/api/testing/fuzzer", + "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + }, + { + "ImportPath": "k8s.io/apimachinery/pkg/api/testing/roundtrip", + "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + }, { "ImportPath": "k8s.io/apimachinery/pkg/apimachinery", "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" }, + { + "ImportPath": "k8s.io/apimachinery/pkg/apimachinery/announced", + "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + }, { "ImportPath": "k8s.io/apimachinery/pkg/apimachinery/registered", "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" }, + { + "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/fuzzer", + "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" + }, { "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/internalversion", "Rev": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" diff --git a/staging/src/k8s.io/client-go/rest/url_utils.go b/staging/src/k8s.io/client-go/rest/url_utils.go index 14f94650a9e3e..a56d1838d8fdb 100644 --- a/staging/src/k8s.io/client-go/rest/url_utils.go +++ b/staging/src/k8s.io/client-go/rest/url_utils.go @@ -56,6 +56,14 @@ func DefaultServerURL(host, apiPath string, groupVersion schema.GroupVersion, de // hostURL.Path should be blank. // // versionedAPIPath, a path relative to baseURL.Path, points to a versioned API base + versionedAPIPath := DefaultVersionedAPIPath(apiPath, groupVersion) + + return hostURL, versionedAPIPath, nil +} + +// DefaultVersionedAPIPathFor constructs the default path for the given group version, assuming the given +// API path, following the standard conventions of the Kubernetes API. +func DefaultVersionedAPIPath(apiPath string, groupVersion schema.GroupVersion) string { versionedAPIPath := path.Join("/", apiPath) // Add the version to the end of the path @@ -64,10 +72,9 @@ func DefaultServerURL(host, apiPath string, groupVersion schema.GroupVersion, de } else { versionedAPIPath = path.Join(versionedAPIPath, groupVersion.Version) - } - return hostURL, versionedAPIPath, nil + return versionedAPIPath } // defaultServerUrlFor is shared between IsConfigTransportTLS and RESTClientFor. It diff --git a/staging/src/k8s.io/client-go/scale/BUILD b/staging/src/k8s.io/client-go/scale/BUILD new file mode 100644 index 0000000000000..ed2bad0b0ee14 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/BUILD @@ -0,0 +1,72 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +go_library( + name = "go_default_library", + srcs = [ + "client.go", + "doc.go", + "interfaces.go", + "util.go", + ], + importpath = "k8s.io/client-go/scale", + visibility = ["//visibility:public"], + deps = [ + "//vendor/k8s.io/api/autoscaling/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library", + "//vendor/k8s.io/client-go/discovery:go_default_library", + "//vendor/k8s.io/client-go/dynamic:go_default_library", + "//vendor/k8s.io/client-go/rest:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme/autoscalingv1:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme/extensionsint:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme/extensionsv1beta1:go_default_library", + ], +) + +go_test( + name = "go_default_test", + srcs = [ + "client_test.go", + "roundtrip_test.go", + ], + importpath = "k8s.io/client-go/scale", + library = ":go_default_library", + deps = [ + "//vendor/github.com/stretchr/testify/assert:go_default_library", + "//vendor/k8s.io/api/apps/v1beta2:go_default_library", + "//vendor/k8s.io/api/autoscaling/v1:go_default_library", + "//vendor/k8s.io/api/core/v1:go_default_library", + "//vendor/k8s.io/api/extensions/v1beta1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/api/testing/roundtrip:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library", + "//vendor/k8s.io/client-go/discovery:go_default_library", + "//vendor/k8s.io/client-go/discovery/fake:go_default_library", + "//vendor/k8s.io/client-go/dynamic:go_default_library", + "//vendor/k8s.io/client-go/rest/fake:go_default_library", + "//vendor/k8s.io/client-go/testing:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//staging/src/k8s.io/client-go/scale/scheme:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/staging/src/k8s.io/client-go/scale/client.go b/staging/src/k8s.io/client-go/scale/client.go new file mode 100644 index 0000000000000..3f85197a0b6fa --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/client.go @@ -0,0 +1,197 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scale + +import ( + "fmt" + + autoscaling "k8s.io/api/autoscaling/v1" + "k8s.io/apimachinery/pkg/api/meta" + "k8s.io/apimachinery/pkg/runtime/schema" + serializer "k8s.io/apimachinery/pkg/runtime/serializer" + "k8s.io/client-go/dynamic" + restclient "k8s.io/client-go/rest" +) + +var scaleConverter = NewScaleConverter() +var codecs = serializer.NewCodecFactory(scaleConverter.Scheme()) + +// restInterfaceProvider turns a restclient.Config into a restclient.Interface. +// It's overridable for the purposes of testing. +type restInterfaceProvider func(*restclient.Config) (restclient.Interface, error) + +// scaleClient is an implementation of ScalesGetter +// which makes use of a RESTMapper and a generic REST +// client to support an discoverable resource. +// It behaves somewhat similarly to the dynamic ClientPool, +// but is more specifically scoped to Scale. +type scaleClient struct { + mapper meta.RESTMapper + + apiPathResolverFunc dynamic.APIPathResolverFunc + scaleKindResolver ScaleKindResolver + clientBase restclient.Interface +} + +// NewForConfig creates a new ScalesGetter which resolves kinds +// to resources using the given RESTMapper, and API paths using +// the given dynamic.APIPathResolverFunc. +func NewForConfig(cfg *restclient.Config, mapper meta.RESTMapper, resolver dynamic.APIPathResolverFunc, scaleKindResolver ScaleKindResolver) (ScalesGetter, error) { + // so that the RESTClientFor doesn't complain + cfg.GroupVersion = &schema.GroupVersion{} + + cfg.NegotiatedSerializer = serializer.DirectCodecFactory{ + CodecFactory: codecs, + } + if len(cfg.UserAgent) == 0 { + cfg.UserAgent = restclient.DefaultKubernetesUserAgent() + } + + client, err := restclient.RESTClientFor(cfg) + if err != nil { + return nil, err + } + + return New(client, mapper, resolver, scaleKindResolver), nil +} + +// New creates a new ScalesGetter using the given client to make requests. +// The GroupVersion on the client is ignored. +func New(baseClient restclient.Interface, mapper meta.RESTMapper, resolver dynamic.APIPathResolverFunc, scaleKindResolver ScaleKindResolver) ScalesGetter { + return &scaleClient{ + mapper: mapper, + + apiPathResolverFunc: resolver, + scaleKindResolver: scaleKindResolver, + clientBase: baseClient, + } +} + +// pathAndVersionFor returns the appropriate base path and the associated full GroupVersionResource +// for the given GroupResource +func (c *scaleClient) pathAndVersionFor(resource schema.GroupResource) (string, schema.GroupVersionResource, error) { + gvr, err := c.mapper.ResourceFor(resource.WithVersion("")) + if err != nil { + return "", gvr, fmt.Errorf("unable to get full preferred group-version-resource for %s: %v", resource.String(), err) + } + + groupVer := gvr.GroupVersion() + + // we need to set the API path based on GroupVersion (defaulting to the legacy path if none is set) + // TODO: we "cheat" here since the API path really only depends on group ATM, but this should + // *probably* take GroupVersionResource and not GroupVersionKind. + apiPath := c.apiPathResolverFunc(groupVer.WithKind("")) + if apiPath == "" { + apiPath = "/api" + } + + path := restclient.DefaultVersionedAPIPath(apiPath, groupVer) + + return path, gvr, nil +} + +// namespacedScaleClient is an ScaleInterface for fetching +// Scales in a given namespace. +type namespacedScaleClient struct { + client *scaleClient + namespace string +} + +func (c *scaleClient) Scales(namespace string) ScaleInterface { + return &namespacedScaleClient{ + client: c, + namespace: namespace, + } +} + +func (c *namespacedScaleClient) Get(resource schema.GroupResource, name string) (*autoscaling.Scale, error) { + // Currently, a /scale endpoint can return different scale types. + // Until we have support for the alternative API representations proposal, + // we need to deal with accepting different API versions. + // In practice, this is autoscaling/v1.Scale and extensions/v1beta1.Scale + + path, gvr, err := c.client.pathAndVersionFor(resource) + if err != nil { + return nil, fmt.Errorf("unable to get client for %s: %v", resource.String(), err) + } + + rawObj, err := c.client.clientBase.Get(). + AbsPath(path). + Namespace(c.namespace). + Resource(gvr.Resource). + Name(name). + SubResource("scale"). + Do(). + Get() + + if err != nil { + return nil, err + } + + // convert whatever this is to autoscaling/v1.Scale + scaleObj, err := scaleConverter.ConvertToVersion(rawObj, autoscaling.SchemeGroupVersion) + if err != nil { + return nil, fmt.Errorf("received an object from a /scale endpoint which was not convertible to autoscaling Scale: %v", err) + } + + return scaleObj.(*autoscaling.Scale), nil +} + +func (c *namespacedScaleClient) Update(resource schema.GroupResource, scale *autoscaling.Scale) (*autoscaling.Scale, error) { + path, gvr, err := c.client.pathAndVersionFor(resource) + if err != nil { + return nil, fmt.Errorf("unable to get client for %s: %v", resource.String(), err) + } + + // Currently, a /scale endpoint can receive and return different scale types. + // Until we hvae support for the alternative API representations proposal, + // we need to deal with sending and accepting differnet API versions. + + // figure out what scale we actually need here + desiredGVK, err := c.client.scaleKindResolver.ScaleForResource(gvr) + if err != nil { + return nil, fmt.Errorf("could not find proper group-version for scale subresource of %s: %v", gvr.String(), err) + } + + // convert this to whatever this endpoint wants + scaleUpdate, err := scaleConverter.ConvertToVersion(scale, desiredGVK.GroupVersion()) + if err != nil { + return nil, fmt.Errorf("could not convert scale update to internal Scale: %v", err) + } + + rawObj, err := c.client.clientBase.Put(). + AbsPath(path). + Namespace(c.namespace). + Resource(gvr.Resource). + Name(scale.Name). + SubResource("scale"). + Body(scaleUpdate). + Do(). + Get() + + if err != nil { + return nil, fmt.Errorf("could not fetch the scale for %s %s: %v", resource.String(), scale.Name, err) + } + + // convert whatever this is back to autoscaling/v1.Scale + scaleObj, err := scaleConverter.ConvertToVersion(rawObj, autoscaling.SchemeGroupVersion) + if err != nil { + return nil, fmt.Errorf("received an object from a /scale endpoint which was not convertible to autoscaling Scale: %v", err) + } + + return scaleObj.(*autoscaling.Scale), err +} diff --git a/staging/src/k8s.io/client-go/scale/client_test.go b/staging/src/k8s.io/client-go/scale/client_test.go new file mode 100644 index 0000000000000..a10429c0d363c --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/client_test.go @@ -0,0 +1,246 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scale + +import ( + "bytes" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "net/http" + "testing" + + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/runtime/schema" + serializer "k8s.io/apimachinery/pkg/runtime/serializer" + "k8s.io/client-go/discovery" + fakedisco "k8s.io/client-go/discovery/fake" + "k8s.io/client-go/dynamic" + fakerest "k8s.io/client-go/rest/fake" + + "github.com/stretchr/testify/assert" + appsv1beta2 "k8s.io/api/apps/v1beta2" + autoscalingv1 "k8s.io/api/autoscaling/v1" + corev1 "k8s.io/api/core/v1" + extv1beta1 "k8s.io/api/extensions/v1beta1" + apimeta "k8s.io/apimachinery/pkg/api/meta" + coretesting "k8s.io/client-go/testing" +) + +func bytesBody(bodyBytes []byte) io.ReadCloser { + return ioutil.NopCloser(bytes.NewReader(bodyBytes)) +} + +func defaultHeaders() http.Header { + header := http.Header{} + header.Set("Content-Type", runtime.ContentTypeJSON) + return header +} + +func fakeScaleClient(t *testing.T) (ScalesGetter, []schema.GroupResource) { + fakeDiscoveryClient := &fakedisco.FakeDiscovery{Fake: &coretesting.Fake{}} + fakeDiscoveryClient.Resources = []*metav1.APIResourceList{ + { + GroupVersion: corev1.SchemeGroupVersion.String(), + APIResources: []metav1.APIResource{ + {Name: "pods", Namespaced: true, Kind: "Pod"}, + {Name: "replicationcontrollers", Namespaced: true, Kind: "ReplicationController"}, + {Name: "replicationcontrollers/scale", Namespaced: true, Kind: "Scale", Group: "autoscaling", Version: "v1"}, + }, + }, + { + GroupVersion: extv1beta1.SchemeGroupVersion.String(), + APIResources: []metav1.APIResource{ + {Name: "replicasets", Namespaced: true, Kind: "ReplicaSet"}, + {Name: "replicasets/scale", Namespaced: true, Kind: "Scale"}, + }, + }, + { + GroupVersion: appsv1beta2.SchemeGroupVersion.String(), + APIResources: []metav1.APIResource{ + {Name: "deployments", Namespaced: true, Kind: "Deployment"}, + {Name: "deployments/scale", Namespaced: true, Kind: "Scale", Group: "autoscaling", Version: "v1"}, + }, + }, + // test a resource that doesn't exist anywere to make sure we're not accidentally depending + // on a static RESTMapper anywhere. + { + GroupVersion: "cheese.testing.k8s.io/v27alpha15", + APIResources: []metav1.APIResource{ + {Name: "cheddars", Namespaced: true, Kind: "Cheddar"}, + {Name: "cheddars/scale", Namespaced: true, Kind: "Scale", Group: "extensions", Version: "v1beta1"}, + }, + }, + } + + restMapperRes, err := discovery.GetAPIGroupResources(fakeDiscoveryClient) + if err != nil { + t.Fatalf("unexpected error while constructing resource list from fake discovery client: %v") + } + restMapper := discovery.NewRESTMapper(restMapperRes, apimeta.InterfacesForUnstructured) + + autoscalingScale := &autoscalingv1.Scale{ + TypeMeta: metav1.TypeMeta{ + Kind: "Scale", + APIVersion: autoscalingv1.SchemeGroupVersion.String(), + }, + ObjectMeta: metav1.ObjectMeta{ + Name: "foo", + }, + Spec: autoscalingv1.ScaleSpec{Replicas: 10}, + Status: autoscalingv1.ScaleStatus{ + Replicas: 10, + Selector: "foo=bar", + }, + } + extScale := &extv1beta1.Scale{ + TypeMeta: metav1.TypeMeta{ + Kind: "Scale", + APIVersion: extv1beta1.SchemeGroupVersion.String(), + }, + ObjectMeta: metav1.ObjectMeta{ + Name: "foo", + }, + Spec: extv1beta1.ScaleSpec{Replicas: 10}, + Status: extv1beta1.ScaleStatus{ + Replicas: 10, + TargetSelector: "foo=bar", + }, + } + + resourcePaths := map[string]runtime.Object{ + "/api/v1/namespaces/default/replicationcontrollers/foo/scale": autoscalingScale, + "/apis/extensions/v1beta1/namespaces/default/replicasets/foo/scale": extScale, + "/apis/apps/v1beta2/namespaces/default/deployments/foo/scale": autoscalingScale, + "/apis/cheese.testing.k8s.io/v27alpha15/namespaces/default/cheddars/foo/scale": extScale, + } + + fakeReqHandler := func(req *http.Request) (*http.Response, error) { + scale, isScalePath := resourcePaths[req.URL.Path] + if !isScalePath { + return nil, fmt.Errorf("unexpected request for URL %q with method %q", req.URL.String(), req.Method) + } + + switch req.Method { + case "GET": + res, err := json.Marshal(scale) + if err != nil { + return nil, err + } + return &http.Response{StatusCode: 200, Header: defaultHeaders(), Body: bytesBody(res)}, nil + case "PUT": + decoder := codecs.UniversalDeserializer() + body, err := ioutil.ReadAll(req.Body) + if err != nil { + return nil, err + } + newScale, newScaleGVK, err := decoder.Decode(body, nil, nil) + if err != nil { + return nil, fmt.Errorf("unexpected request body: %v", err) + } + if *newScaleGVK != scale.GetObjectKind().GroupVersionKind() { + return nil, fmt.Errorf("unexpected scale API version %s (expected %s)", newScaleGVK.String(), scale.GetObjectKind().GroupVersionKind().String()) + } + res, err := json.Marshal(newScale) + if err != nil { + return nil, err + } + return &http.Response{StatusCode: 200, Header: defaultHeaders(), Body: bytesBody(res)}, nil + default: + return nil, fmt.Errorf("unexpected request for URL %q with method %q", req.URL.String(), req.Method) + } + } + + fakeClient := &fakerest.RESTClient{ + Client: fakerest.CreateHTTPClient(fakeReqHandler), + NegotiatedSerializer: serializer.DirectCodecFactory{ + CodecFactory: codecs, + }, + GroupVersion: schema.GroupVersion{}, + VersionedAPIPath: "/not/a/real/path", + } + + resolver := NewDiscoveryScaleKindResolver(fakeDiscoveryClient) + client := New(fakeClient, restMapper, dynamic.LegacyAPIPathResolverFunc, resolver) + + groupResources := []schema.GroupResource{ + {Group: corev1.GroupName, Resource: "replicationcontroller"}, + {Group: extv1beta1.GroupName, Resource: "replicaset"}, + {Group: appsv1beta2.GroupName, Resource: "deployment"}, + {Group: "cheese.testing.k8s.io", Resource: "cheddar"}, + } + + return client, groupResources +} + +func TestGetScale(t *testing.T) { + scaleClient, groupResources := fakeScaleClient(t) + expectedScale := &autoscalingv1.Scale{ + TypeMeta: metav1.TypeMeta{ + Kind: "Scale", + APIVersion: autoscalingv1.SchemeGroupVersion.String(), + }, + ObjectMeta: metav1.ObjectMeta{ + Name: "foo", + }, + Spec: autoscalingv1.ScaleSpec{Replicas: 10}, + Status: autoscalingv1.ScaleStatus{ + Replicas: 10, + Selector: "foo=bar", + }, + } + + for _, groupResource := range groupResources { + scale, err := scaleClient.Scales("default").Get(groupResource, "foo") + if !assert.NoError(t, err, "should have been able to fetch a scale for %s", groupResource.String()) { + continue + } + assert.NotNil(t, scale, "should have returned a non-nil scale for %s", groupResource.String()) + + assert.Equal(t, expectedScale, scale, "should have returned the expected scale for %s", groupResource.String()) + } +} + +func TestUpdateScale(t *testing.T) { + scaleClient, groupResources := fakeScaleClient(t) + expectedScale := &autoscalingv1.Scale{ + TypeMeta: metav1.TypeMeta{ + Kind: "Scale", + APIVersion: autoscalingv1.SchemeGroupVersion.String(), + }, + ObjectMeta: metav1.ObjectMeta{ + Name: "foo", + }, + Spec: autoscalingv1.ScaleSpec{Replicas: 10}, + Status: autoscalingv1.ScaleStatus{ + Replicas: 10, + Selector: "foo=bar", + }, + } + + for _, groupResource := range groupResources { + scale, err := scaleClient.Scales("default").Update(groupResource, expectedScale) + if !assert.NoError(t, err, "should have been able to fetch a scale for %s", groupResource.String()) { + continue + } + assert.NotNil(t, scale, "should have returned a non-nil scale for %s", groupResource.String()) + + assert.Equal(t, expectedScale, scale, "should have returned the expected scale for %s", groupResource.String()) + } +} diff --git a/staging/src/k8s.io/client-go/scale/doc.go b/staging/src/k8s.io/client-go/scale/doc.go new file mode 100644 index 0000000000000..59fd39146cae9 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/doc.go @@ -0,0 +1,21 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Package scale provides a polymorphic scale client capable of fetching +// and updating Scale for any resource which implements the `scale` subresource, +// as long as that subresource operates on a version of scale convertable to +// autoscaling.Scale. +package scale diff --git a/staging/src/k8s.io/client-go/scale/interfaces.go b/staging/src/k8s.io/client-go/scale/interfaces.go new file mode 100644 index 0000000000000..4668c7417d183 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/interfaces.go @@ -0,0 +1,39 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scale + +import ( + autoscalingapi "k8s.io/api/autoscaling/v1" + "k8s.io/apimachinery/pkg/runtime/schema" +) + +// ScalesGetter can produce a ScaleInterface +// for a particular namespace. +type ScalesGetter interface { + Scales(namespace string) ScaleInterface +} + +// ScaleInterface can fetch and update scales for +// resources in a particular namespace which implement +// the scale subresource. +type ScaleInterface interface { + // Get fetches the scale of the given scalable resource. + Get(resource schema.GroupResource, name string) (*autoscalingapi.Scale, error) + + // Update updates the scale of the the given scalable resource. + Update(resource schema.GroupResource, scale *autoscalingapi.Scale) (*autoscalingapi.Scale, error) +} diff --git a/staging/src/k8s.io/client-go/scale/roundtrip_test.go b/staging/src/k8s.io/client-go/scale/roundtrip_test.go new file mode 100644 index 0000000000000..2ea2887570069 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/roundtrip_test.go @@ -0,0 +1,34 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scale + +import ( + "testing" + + "k8s.io/apimachinery/pkg/api/testing/roundtrip" +) + +// NB: this can't be in the scheme package, because importing' +// scheme/autoscalingv1 from scheme causes a depedency loop from +// conversions + +func TestRoundTrip(t *testing.T) { + scheme := NewScaleConverter().Scheme() + // we don't actually need any custom fuzzer funcs ATM -- the defaults + // will do just fine + roundtrip.RoundTripTestForScheme(t, scheme, nil) +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/BUILD b/staging/src/k8s.io/client-go/scale/scheme/BUILD new file mode 100644 index 0000000000000..effa914192736 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/BUILD @@ -0,0 +1,39 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "doc.go", + "register.go", + "types.go", + "zz_generated.deepcopy.go", + ], + importpath = "k8s.io/client-go/scale/scheme", + visibility = ["//visibility:public"], + deps = [ + "//vendor/k8s.io/api/autoscaling/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/conversion:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [ + ":package-srcs", + "//staging/src/k8s.io/client-go/scale/scheme/autoscalingv1:all-srcs", + "//staging/src/k8s.io/client-go/scale/scheme/extensionsint:all-srcs", + "//staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1:all-srcs", + ], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/BUILD b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/BUILD new file mode 100644 index 0000000000000..646a6fdf8e7af --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/BUILD @@ -0,0 +1,35 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "conversion.go", + "doc.go", + "register.go", + "zz_generated.conversion.go", + ], + importpath = "k8s.io/client-go/scale/scheme/autoscalingv1", + visibility = ["//visibility:public"], + deps = [ + "//vendor/k8s.io/api/autoscaling/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/conversion:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/conversion.go b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/conversion.go new file mode 100644 index 0000000000000..a775bcc225bcf --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/conversion.go @@ -0,0 +1,69 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package autoscalingv1 + +import ( + "fmt" + + v1 "k8s.io/api/autoscaling/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/conversion" + "k8s.io/apimachinery/pkg/runtime" + scheme "k8s.io/client-go/scale/scheme" +) + +// addConversions registers conversions between the internal version +// of Scale and supported external versions of Scale. +func addConversionFuncs(scheme *runtime.Scheme) error { + err := scheme.AddConversionFuncs( + Convert_scheme_ScaleStatus_To_v1_ScaleStatus, + Convert_v1_ScaleStatus_To_scheme_ScaleStatus, + ) + if err != nil { + return err + } + + return nil +} + +func Convert_scheme_ScaleStatus_To_v1_ScaleStatus(in *scheme.ScaleStatus, out *v1.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + out.Selector = "" + if in.Selector != nil { + selector, err := metav1.LabelSelectorAsSelector(in.Selector) + if err != nil { + return fmt.Errorf("invalid label selector: %v", err) + } + out.Selector = selector.String() + } + + return nil +} + +func Convert_v1_ScaleStatus_To_scheme_ScaleStatus(in *v1.ScaleStatus, out *scheme.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + if in.Selector != "" { + labelSelector, err := metav1.ParseToLabelSelector(in.Selector) + if err != nil { + out.Selector = nil + return fmt.Errorf("failed to parse target selector: %v", err) + } + out.Selector = labelSelector + } + + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/doc.go b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/doc.go new file mode 100644 index 0000000000000..aff53e4c37b4a --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/doc.go @@ -0,0 +1,20 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// +k8s:conversion-gen=k8s.io/kubernetes/vendor/k8s.io/client-go/scale/scheme +// +k8s:conversion-gen-external-types=../../../../../k8s.io/api/autoscaling/v1 + +package autoscalingv1 // import "k8s.io/client-go/scale/scheme/autoscalingv1" diff --git a/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/register.go b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/register.go new file mode 100644 index 0000000000000..b15701c4ff7e9 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/register.go @@ -0,0 +1,45 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package autoscalingv1 + +import ( + autoscalingapiv1 "k8s.io/api/autoscaling/v1" + "k8s.io/apimachinery/pkg/runtime/schema" +) + +// GroupName is the group name use in this package +const GroupName = autoscalingapiv1.GroupName + +// SchemeGroupVersion is group version used to register these objects +var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: "v1"} + +// Resource takes an unqualified resource and returns a Group qualified GroupResource +func Resource(resource string) schema.GroupResource { + return SchemeGroupVersion.WithResource(resource).GroupResource() +} + +var ( + localSchemeBuilder = &autoscalingapiv1.SchemeBuilder + AddToScheme = localSchemeBuilder.AddToScheme +) + +func init() { + // We only register manually written functions here. The registration of the + // generated functions takes place in the generated files. The separation + // makes the code compile even when the generated files are missing. + localSchemeBuilder.Register(addConversionFuncs) +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/zz_generated.conversion.go b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/zz_generated.conversion.go new file mode 100644 index 0000000000000..1eaa0d180270d --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/autoscalingv1/zz_generated.conversion.go @@ -0,0 +1,109 @@ +// +build !ignore_autogenerated + +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// This file was autogenerated by conversion-gen. Do not edit it manually! + +package autoscalingv1 + +import ( + v1 "k8s.io/api/autoscaling/v1" + conversion "k8s.io/apimachinery/pkg/conversion" + runtime "k8s.io/apimachinery/pkg/runtime" + scheme "k8s.io/client-go/scale/scheme" +) + +func init() { + localSchemeBuilder.Register(RegisterConversions) +} + +// RegisterConversions adds conversion functions to the given scheme. +// Public to allow building arbitrary schemes. +func RegisterConversions(scheme *runtime.Scheme) error { + return scheme.AddGeneratedConversionFuncs( + Convert_v1_Scale_To_scheme_Scale, + Convert_scheme_Scale_To_v1_Scale, + Convert_v1_ScaleSpec_To_scheme_ScaleSpec, + Convert_scheme_ScaleSpec_To_v1_ScaleSpec, + Convert_v1_ScaleStatus_To_scheme_ScaleStatus, + Convert_scheme_ScaleStatus_To_v1_ScaleStatus, + ) +} + +func autoConvert_v1_Scale_To_scheme_Scale(in *v1.Scale, out *scheme.Scale, s conversion.Scope) error { + out.ObjectMeta = in.ObjectMeta + if err := Convert_v1_ScaleSpec_To_scheme_ScaleSpec(&in.Spec, &out.Spec, s); err != nil { + return err + } + if err := Convert_v1_ScaleStatus_To_scheme_ScaleStatus(&in.Status, &out.Status, s); err != nil { + return err + } + return nil +} + +// Convert_v1_Scale_To_scheme_Scale is an autogenerated conversion function. +func Convert_v1_Scale_To_scheme_Scale(in *v1.Scale, out *scheme.Scale, s conversion.Scope) error { + return autoConvert_v1_Scale_To_scheme_Scale(in, out, s) +} + +func autoConvert_scheme_Scale_To_v1_Scale(in *scheme.Scale, out *v1.Scale, s conversion.Scope) error { + out.ObjectMeta = in.ObjectMeta + if err := Convert_scheme_ScaleSpec_To_v1_ScaleSpec(&in.Spec, &out.Spec, s); err != nil { + return err + } + if err := Convert_scheme_ScaleStatus_To_v1_ScaleStatus(&in.Status, &out.Status, s); err != nil { + return err + } + return nil +} + +// Convert_scheme_Scale_To_v1_Scale is an autogenerated conversion function. +func Convert_scheme_Scale_To_v1_Scale(in *scheme.Scale, out *v1.Scale, s conversion.Scope) error { + return autoConvert_scheme_Scale_To_v1_Scale(in, out, s) +} + +func autoConvert_v1_ScaleSpec_To_scheme_ScaleSpec(in *v1.ScaleSpec, out *scheme.ScaleSpec, s conversion.Scope) error { + out.Replicas = in.Replicas + return nil +} + +// Convert_v1_ScaleSpec_To_scheme_ScaleSpec is an autogenerated conversion function. +func Convert_v1_ScaleSpec_To_scheme_ScaleSpec(in *v1.ScaleSpec, out *scheme.ScaleSpec, s conversion.Scope) error { + return autoConvert_v1_ScaleSpec_To_scheme_ScaleSpec(in, out, s) +} + +func autoConvert_scheme_ScaleSpec_To_v1_ScaleSpec(in *scheme.ScaleSpec, out *v1.ScaleSpec, s conversion.Scope) error { + out.Replicas = in.Replicas + return nil +} + +// Convert_scheme_ScaleSpec_To_v1_ScaleSpec is an autogenerated conversion function. +func Convert_scheme_ScaleSpec_To_v1_ScaleSpec(in *scheme.ScaleSpec, out *v1.ScaleSpec, s conversion.Scope) error { + return autoConvert_scheme_ScaleSpec_To_v1_ScaleSpec(in, out, s) +} + +func autoConvert_v1_ScaleStatus_To_scheme_ScaleStatus(in *v1.ScaleStatus, out *scheme.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + // WARNING: in.Selector requires manual conversion: inconvertible types (string vs *k8s.io/apimachinery/pkg/apis/meta/v1.LabelSelector) + return nil +} + +func autoConvert_scheme_ScaleStatus_To_v1_ScaleStatus(in *scheme.ScaleStatus, out *v1.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + // WARNING: in.Selector requires manual conversion: inconvertible types (*k8s.io/apimachinery/pkg/apis/meta/v1.LabelSelector vs string) + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/doc.go b/staging/src/k8s.io/client-go/scale/scheme/doc.go new file mode 100644 index 0000000000000..8a050ce47b430 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/doc.go @@ -0,0 +1,22 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// +k8s:deepcopy-gen=package,register + +// Package scheme contains a runtime.Scheme to be used for serializing +// and deserializing different versions of Scale, and for converting +// in between them. +package scheme diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsint/BUILD b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/BUILD new file mode 100644 index 0000000000000..6174a88b145df --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/BUILD @@ -0,0 +1,31 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "doc.go", + "register.go", + ], + importpath = "k8s.io/client-go/scale/scheme/extensionsint", + visibility = ["//visibility:public"], + deps = [ + "//vendor/k8s.io/api/extensions/v1beta1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsint/doc.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/doc.go new file mode 100644 index 0000000000000..cc92bf18824db --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/doc.go @@ -0,0 +1,22 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Package extensionsint contains the necessary scaffolding of the +// internal version of extensions as required by conversion logic. +// It doesn't have any of its own types -- it's just necessary to +// get the expected behavoir out of runtime.Scheme.ConvertToVersion +// and associated methods. +package extensionsint diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsint/register.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/register.go new file mode 100644 index 0000000000000..5a96ac56140a8 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsint/register.go @@ -0,0 +1,53 @@ +/* +Copyright 2016 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package extensionsint + +import ( + extensionsv1beta1 "k8s.io/api/extensions/v1beta1" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/runtime/schema" + scalescheme "k8s.io/client-go/scale/scheme" +) + +// GroupName is the group name use in this package +const GroupName = extensionsv1beta1.GroupName + +// SchemeGroupVersion is group version used to register these objects +var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal} + +// Kind takes an unqualified kind and returns a Group qualified GroupKind +func Kind(kind string) schema.GroupKind { + return SchemeGroupVersion.WithKind(kind).GroupKind() +} + +// Resource takes an unqualified resource and returns a Group qualified GroupResource +func Resource(resource string) schema.GroupResource { + return SchemeGroupVersion.WithResource(resource).GroupResource() +} + +var ( + SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes) + AddToScheme = SchemeBuilder.AddToScheme +) + +// Adds the list of known types to api.Scheme. +func addKnownTypes(scheme *runtime.Scheme) error { + scheme.AddKnownTypes(SchemeGroupVersion, + &scalescheme.Scale{}, + ) + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/BUILD b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/BUILD new file mode 100644 index 0000000000000..4c992c7d113e0 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/BUILD @@ -0,0 +1,35 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +go_library( + name = "go_default_library", + srcs = [ + "conversion.go", + "doc.go", + "register.go", + "zz_generated.conversion.go", + ], + importpath = "k8s.io/client-go/scale/scheme/extensionsv1beta1", + visibility = ["//visibility:public"], + deps = [ + "//vendor/k8s.io/api/extensions/v1beta1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/conversion:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library", + "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library", + "//vendor/k8s.io/client-go/scale/scheme:go_default_library", + ], +) + +filegroup( + name = "package-srcs", + srcs = glob(["**"]), + tags = ["automanaged"], + visibility = ["//visibility:private"], +) + +filegroup( + name = "all-srcs", + srcs = [":package-srcs"], + tags = ["automanaged"], + visibility = ["//visibility:public"], +) diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/conversion.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/conversion.go new file mode 100644 index 0000000000000..1b6b9e6103795 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/conversion.go @@ -0,0 +1,87 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package extensionsv1beta1 + +import ( + "fmt" + + v1beta1 "k8s.io/api/extensions/v1beta1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/conversion" + "k8s.io/apimachinery/pkg/runtime" + scheme "k8s.io/client-go/scale/scheme" +) + +// addConversions registers conversions between the internal version +// of Scale and supported external versions of Scale. +func addConversionFuncs(scheme *runtime.Scheme) error { + err := scheme.AddConversionFuncs( + Convert_scheme_ScaleStatus_To_v1beta1_ScaleStatus, + Convert_v1beta1_ScaleStatus_To_scheme_ScaleStatus, + ) + if err != nil { + return err + } + + return nil +} +func Convert_scheme_ScaleStatus_To_v1beta1_ScaleStatus(in *scheme.ScaleStatus, out *v1beta1.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + out.Selector = nil + out.TargetSelector = "" + if in.Selector != nil { + if in.Selector.MatchExpressions == nil || len(in.Selector.MatchExpressions) == 0 { + out.Selector = in.Selector.MatchLabels + } + + selector, err := metav1.LabelSelectorAsSelector(in.Selector) + if err != nil { + return fmt.Errorf("invalid label selector: %v", err) + } + out.TargetSelector = selector.String() + } + + return nil +} + +func Convert_v1beta1_ScaleStatus_To_scheme_ScaleStatus(in *v1beta1.ScaleStatus, out *scheme.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + + // Normally when 2 fields map to the same internal value we favor the old field, since + // old clients can't be expected to know about new fields but clients that know about the + // new field can be expected to know about the old field (though that's not quite true, due + // to kubectl apply). However, these fields are readonly, so any non-nil value should work. + if in.TargetSelector != "" { + labelSelector, err := metav1.ParseToLabelSelector(in.TargetSelector) + if err != nil { + out.Selector = nil + return fmt.Errorf("failed to parse target selector: %v", err) + } + out.Selector = labelSelector + } else if in.Selector != nil { + out.Selector = new(metav1.LabelSelector) + selector := make(map[string]string) + for key, val := range in.Selector { + selector[key] = val + } + out.Selector.MatchLabels = selector + } else { + out.Selector = nil + } + + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/doc.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/doc.go new file mode 100644 index 0000000000000..40d0fc0e959bb --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/doc.go @@ -0,0 +1,20 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// +k8s:conversion-gen=k8s.io/kubernetes/vendor/k8s.io/client-go/scale/scheme +// +k8s:conversion-gen-external-types=../../../../../k8s.io/api/extensions/v1beta1 + +package extensionsv1beta1 // import "k8s.io/client-go/scale/scheme/extensionsv1beta1" diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/register.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/register.go new file mode 100644 index 0000000000000..aed1174e023f0 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/register.go @@ -0,0 +1,45 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package extensionsv1beta1 + +import ( + extensionsapiv1beta1 "k8s.io/api/extensions/v1beta1" + "k8s.io/apimachinery/pkg/runtime/schema" +) + +// GroupName is the group name use in this package +const GroupName = extensionsapiv1beta1.GroupName + +// SchemeGroupVersion is group version used to register these objects +var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: "v1beta1"} + +// Resource takes an unqualified resource and returns a Group qualified GroupResource +func Resource(resource string) schema.GroupResource { + return SchemeGroupVersion.WithResource(resource).GroupResource() +} + +var ( + localSchemeBuilder = &extensionsapiv1beta1.SchemeBuilder + AddToScheme = localSchemeBuilder.AddToScheme +) + +func init() { + // We only register manually written functions here. The registration of the + // generated functions takes place in the generated files. The separation + // makes the code compile even when the generated files are missing. + localSchemeBuilder.Register(addConversionFuncs) +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/zz_generated.conversion.go b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/zz_generated.conversion.go new file mode 100644 index 0000000000000..848cb8d2aa3a0 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/extensionsv1beta1/zz_generated.conversion.go @@ -0,0 +1,110 @@ +// +build !ignore_autogenerated + +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// This file was autogenerated by conversion-gen. Do not edit it manually! + +package extensionsv1beta1 + +import ( + v1beta1 "k8s.io/api/extensions/v1beta1" + conversion "k8s.io/apimachinery/pkg/conversion" + runtime "k8s.io/apimachinery/pkg/runtime" + scheme "k8s.io/client-go/scale/scheme" +) + +func init() { + localSchemeBuilder.Register(RegisterConversions) +} + +// RegisterConversions adds conversion functions to the given scheme. +// Public to allow building arbitrary schemes. +func RegisterConversions(scheme *runtime.Scheme) error { + return scheme.AddGeneratedConversionFuncs( + Convert_v1beta1_Scale_To_scheme_Scale, + Convert_scheme_Scale_To_v1beta1_Scale, + Convert_v1beta1_ScaleSpec_To_scheme_ScaleSpec, + Convert_scheme_ScaleSpec_To_v1beta1_ScaleSpec, + Convert_v1beta1_ScaleStatus_To_scheme_ScaleStatus, + Convert_scheme_ScaleStatus_To_v1beta1_ScaleStatus, + ) +} + +func autoConvert_v1beta1_Scale_To_scheme_Scale(in *v1beta1.Scale, out *scheme.Scale, s conversion.Scope) error { + out.ObjectMeta = in.ObjectMeta + if err := Convert_v1beta1_ScaleSpec_To_scheme_ScaleSpec(&in.Spec, &out.Spec, s); err != nil { + return err + } + if err := Convert_v1beta1_ScaleStatus_To_scheme_ScaleStatus(&in.Status, &out.Status, s); err != nil { + return err + } + return nil +} + +// Convert_v1beta1_Scale_To_scheme_Scale is an autogenerated conversion function. +func Convert_v1beta1_Scale_To_scheme_Scale(in *v1beta1.Scale, out *scheme.Scale, s conversion.Scope) error { + return autoConvert_v1beta1_Scale_To_scheme_Scale(in, out, s) +} + +func autoConvert_scheme_Scale_To_v1beta1_Scale(in *scheme.Scale, out *v1beta1.Scale, s conversion.Scope) error { + out.ObjectMeta = in.ObjectMeta + if err := Convert_scheme_ScaleSpec_To_v1beta1_ScaleSpec(&in.Spec, &out.Spec, s); err != nil { + return err + } + if err := Convert_scheme_ScaleStatus_To_v1beta1_ScaleStatus(&in.Status, &out.Status, s); err != nil { + return err + } + return nil +} + +// Convert_scheme_Scale_To_v1beta1_Scale is an autogenerated conversion function. +func Convert_scheme_Scale_To_v1beta1_Scale(in *scheme.Scale, out *v1beta1.Scale, s conversion.Scope) error { + return autoConvert_scheme_Scale_To_v1beta1_Scale(in, out, s) +} + +func autoConvert_v1beta1_ScaleSpec_To_scheme_ScaleSpec(in *v1beta1.ScaleSpec, out *scheme.ScaleSpec, s conversion.Scope) error { + out.Replicas = in.Replicas + return nil +} + +// Convert_v1beta1_ScaleSpec_To_scheme_ScaleSpec is an autogenerated conversion function. +func Convert_v1beta1_ScaleSpec_To_scheme_ScaleSpec(in *v1beta1.ScaleSpec, out *scheme.ScaleSpec, s conversion.Scope) error { + return autoConvert_v1beta1_ScaleSpec_To_scheme_ScaleSpec(in, out, s) +} + +func autoConvert_scheme_ScaleSpec_To_v1beta1_ScaleSpec(in *scheme.ScaleSpec, out *v1beta1.ScaleSpec, s conversion.Scope) error { + out.Replicas = in.Replicas + return nil +} + +// Convert_scheme_ScaleSpec_To_v1beta1_ScaleSpec is an autogenerated conversion function. +func Convert_scheme_ScaleSpec_To_v1beta1_ScaleSpec(in *scheme.ScaleSpec, out *v1beta1.ScaleSpec, s conversion.Scope) error { + return autoConvert_scheme_ScaleSpec_To_v1beta1_ScaleSpec(in, out, s) +} + +func autoConvert_v1beta1_ScaleStatus_To_scheme_ScaleStatus(in *v1beta1.ScaleStatus, out *scheme.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + // WARNING: in.Selector requires manual conversion: inconvertible types (map[string]string vs *k8s.io/apimachinery/pkg/apis/meta/v1.LabelSelector) + // WARNING: in.TargetSelector requires manual conversion: does not exist in peer-type + return nil +} + +func autoConvert_scheme_ScaleStatus_To_v1beta1_ScaleStatus(in *scheme.ScaleStatus, out *v1beta1.ScaleStatus, s conversion.Scope) error { + out.Replicas = in.Replicas + // WARNING: in.Selector requires manual conversion: inconvertible types (*k8s.io/apimachinery/pkg/apis/meta/v1.LabelSelector vs map[string]string) + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/register.go b/staging/src/k8s.io/client-go/scale/scheme/register.go new file mode 100644 index 0000000000000..7e6decfff5f85 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/register.go @@ -0,0 +1,52 @@ +/* +Copyright 2016 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scheme + +import ( + autoscalingv1 "k8s.io/api/autoscaling/v1" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/runtime/schema" +) + +// GroupName is the group name use in this package +const GroupName = autoscalingv1.GroupName + +// SchemeGroupVersion is group version used to register these objects +var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal} + +// Kind takes an unqualified kind and returns a Group qualified GroupKind +func Kind(kind string) schema.GroupKind { + return SchemeGroupVersion.WithKind(kind).GroupKind() +} + +// Resource takes an unqualified resource and returns a Group qualified GroupResource +func Resource(resource string) schema.GroupResource { + return SchemeGroupVersion.WithResource(resource).GroupResource() +} + +var ( + SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes) + AddToScheme = SchemeBuilder.AddToScheme +) + +// Adds the list of known types to api.Scheme. +func addKnownTypes(scheme *runtime.Scheme) error { + scheme.AddKnownTypes(SchemeGroupVersion, + &Scale{}, + ) + return nil +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/types.go b/staging/src/k8s.io/client-go/scale/scheme/types.go new file mode 100644 index 0000000000000..13aec2b3c3cdf --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/types.go @@ -0,0 +1,60 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scheme + +import ( + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" +) + +// This file contains our own "internal" version of scale that we use for conversions, +// since we can't use the main Kubernetes internal versions. + +// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object + +// Scale represents a scaling request for a resource. +type Scale struct { + metav1.TypeMeta + // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata. + // +optional + metav1.ObjectMeta + + // defines the behavior of the scale. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#spec-and-status. + // +optional + Spec ScaleSpec + + // current status of the scale. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#spec-and-status. Read-only. + // +optional + Status ScaleStatus +} + +// ScaleSpec describes the attributes of a scale subresource. +type ScaleSpec struct { + // desired number of instances for the scaled object. + // +optional + Replicas int32 +} + +// ScaleStatus represents the current status of a scale subresource. +type ScaleStatus struct { + // actual number of observed instances of the scaled object. + Replicas int32 + + // label query over pods that should match the replicas count. + // More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors + // +optional + Selector *metav1.LabelSelector +} diff --git a/staging/src/k8s.io/client-go/scale/scheme/zz_generated.deepcopy.go b/staging/src/k8s.io/client-go/scale/scheme/zz_generated.deepcopy.go new file mode 100644 index 0000000000000..ec9f5f95ed15f --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/scheme/zz_generated.deepcopy.go @@ -0,0 +1,123 @@ +// +build !ignore_autogenerated + +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// This file was autogenerated by deepcopy-gen. Do not edit it manually! + +package scheme + +import ( + v1 "k8s.io/apimachinery/pkg/apis/meta/v1" + conversion "k8s.io/apimachinery/pkg/conversion" + runtime "k8s.io/apimachinery/pkg/runtime" + reflect "reflect" +) + +func init() { + SchemeBuilder.Register(RegisterDeepCopies) +} + +// RegisterDeepCopies adds deep-copy functions to the given scheme. Public +// to allow building arbitrary schemes. +// +// Deprecated: deepcopy registration will go away when static deepcopy is fully implemented. +func RegisterDeepCopies(scheme *runtime.Scheme) error { + return scheme.AddGeneratedDeepCopyFuncs( + conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error { + in.(*Scale).DeepCopyInto(out.(*Scale)) + return nil + }, InType: reflect.TypeOf(&Scale{})}, + conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error { + in.(*ScaleSpec).DeepCopyInto(out.(*ScaleSpec)) + return nil + }, InType: reflect.TypeOf(&ScaleSpec{})}, + conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error { + in.(*ScaleStatus).DeepCopyInto(out.(*ScaleStatus)) + return nil + }, InType: reflect.TypeOf(&ScaleStatus{})}, + ) +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *Scale) DeepCopyInto(out *Scale) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ObjectMeta.DeepCopyInto(&out.ObjectMeta) + out.Spec = in.Spec + in.Status.DeepCopyInto(&out.Status) + return +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Scale. +func (in *Scale) DeepCopy() *Scale { + if in == nil { + return nil + } + out := new(Scale) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *Scale) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } else { + return nil + } +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ScaleSpec) DeepCopyInto(out *ScaleSpec) { + *out = *in + return +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ScaleSpec. +func (in *ScaleSpec) DeepCopy() *ScaleSpec { + if in == nil { + return nil + } + out := new(ScaleSpec) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ScaleStatus) DeepCopyInto(out *ScaleStatus) { + *out = *in + if in.Selector != nil { + in, out := &in.Selector, &out.Selector + if *in == nil { + *out = nil + } else { + *out = new(v1.LabelSelector) + (*in).DeepCopyInto(*out) + } + } + return +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ScaleStatus. +func (in *ScaleStatus) DeepCopy() *ScaleStatus { + if in == nil { + return nil + } + out := new(ScaleStatus) + in.DeepCopyInto(out) + return out +} diff --git a/staging/src/k8s.io/client-go/scale/util.go b/staging/src/k8s.io/client-go/scale/util.go new file mode 100644 index 0000000000000..f5de4bc9a3334 --- /dev/null +++ b/staging/src/k8s.io/client-go/scale/util.go @@ -0,0 +1,159 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package scale + +import ( + "fmt" + "strings" + "sync" + + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/runtime/schema" + "k8s.io/client-go/discovery" + scalescheme "k8s.io/client-go/scale/scheme" + scaleautoscaling "k8s.io/client-go/scale/scheme/autoscalingv1" + scaleextint "k8s.io/client-go/scale/scheme/extensionsint" + scaleext "k8s.io/client-go/scale/scheme/extensionsv1beta1" +) + +// ScaleKindResolver knows about the relationship between +// resources and the GroupVersionKind of their scale subresources. +type ScaleKindResolver interface { + // ScaleForResource returns the GroupVersionKind of the + // scale subresource for the given GroupVersionResource. + ScaleForResource(resource schema.GroupVersionResource) (scaleVersion schema.GroupVersionKind, err error) +} + +// discoveryScaleResolver is a ScaleKindResolver that uses +// a DiscoveryInterface to associate resources with their +// scale-kinds +type discoveryScaleResolver struct { + discoveryClient discovery.ServerResourcesInterface +} + +func (r *discoveryScaleResolver) ScaleForResource(inputRes schema.GroupVersionResource) (scaleVersion schema.GroupVersionKind, err error) { + groupVerResources, err := r.discoveryClient.ServerResourcesForGroupVersion(inputRes.GroupVersion().String()) + if err != nil { + return schema.GroupVersionKind{}, fmt.Errorf("unable to fetch discovery information for %s: %v", inputRes.String(), err) + } + + for _, resource := range groupVerResources.APIResources { + resourceParts := strings.SplitN(resource.Name, "/", 2) + if len(resourceParts) != 2 || resourceParts[0] != inputRes.Resource || resourceParts[1] != "scale" { + // skip non-scale resources, or scales for resources that we're not looking for + continue + } + + scaleGV := inputRes.GroupVersion() + if resource.Group != "" && resource.Version != "" { + scaleGV = schema.GroupVersion{ + Group: resource.Group, + Version: resource.Version, + } + } + + return scaleGV.WithKind(resource.Kind), nil + } + + return schema.GroupVersionKind{}, fmt.Errorf("could not find scale subresource for %s in discovery information", inputRes.String()) +} + +// cachedScaleKindResolver is a ScaleKindResolver that caches results +// from another ScaleKindResolver, re-fetching on cache misses. +type cachedScaleKindResolver struct { + base ScaleKindResolver + + cache map[schema.GroupVersionResource]schema.GroupVersionKind + mu sync.RWMutex +} + +func (r *cachedScaleKindResolver) ScaleForResource(resource schema.GroupVersionResource) (schema.GroupVersionKind, error) { + r.mu.RLock() + gvk, isCached := r.cache[resource] + r.mu.RUnlock() + if isCached { + return gvk, nil + } + + // we could have multiple fetches of the same resources, but that's probably + // better than limiting to only one reader at once (mu.Mutex), + // or blocking checks for other resources while we fetch + // (mu.Lock before fetch). + gvk, err := r.base.ScaleForResource(resource) + if err != nil { + return schema.GroupVersionKind{}, err + } + + r.mu.Lock() + defer r.mu.Unlock() + r.cache[resource] = gvk + + return gvk, nil +} + +// NewDiscoveryScaleKindResolver creates a new ScaleKindResolver which uses information from the given +// disovery client to resolve the correct Scale GroupVersionKind for different resources. +func NewDiscoveryScaleKindResolver(client discovery.ServerResourcesInterface) ScaleKindResolver { + base := &discoveryScaleResolver{ + discoveryClient: client, + } + + return &cachedScaleKindResolver{ + base: base, + cache: make(map[schema.GroupVersionResource]schema.GroupVersionKind), + } +} + +// ScaleConverter knows how to convert between external scale versions. +type ScaleConverter struct { + scheme *runtime.Scheme + internalVersioner runtime.GroupVersioner +} + +// NewScaleConverter creates a new ScaleConverter for converting between +// Scales in autoscaling/v1 and extensions/v1beta1. +func NewScaleConverter() *ScaleConverter { + scheme := runtime.NewScheme() + scaleautoscaling.AddToScheme(scheme) + scalescheme.AddToScheme(scheme) + scaleext.AddToScheme(scheme) + scaleextint.AddToScheme(scheme) + + return &ScaleConverter{ + scheme: scheme, + internalVersioner: runtime.NewMultiGroupVersioner( + scalescheme.SchemeGroupVersion, + schema.GroupKind{Group: scaleext.GroupName, Kind: "Scale"}, + schema.GroupKind{Group: scaleautoscaling.GroupName, Kind: "Scale"}, + ), + } +} + +// Scheme returns the scheme used by this scale converter. +func (c *ScaleConverter) Scheme() *runtime.Scheme { + return c.scheme +} + +// ConvertToVersion converts the given *external* input object to the given output *external* output group-version. +func (c *ScaleConverter) ConvertToVersion(in runtime.Object, outVersion schema.GroupVersion) (runtime.Object, error) { + scaleInt, err := c.scheme.ConvertToVersion(in, c.internalVersioner) + if err != nil { + return nil, err + } + + return c.scheme.ConvertToVersion(scaleInt, outVersion) +}