/* Copyright 2014 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 endpoints import ( "path" "time" "github.com/emicklei/go-restful" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/apimachinery/pkg/runtime/schema" utilerrors "k8s.io/apimachinery/pkg/util/errors" "k8s.io/apimachinery/pkg/util/sets" "k8s.io/apiserver/pkg/admission" "k8s.io/apiserver/pkg/authorization/authorizer" "k8s.io/apiserver/pkg/endpoints/discovery" "k8s.io/apiserver/pkg/registry/rest" openapiproto "k8s.io/kube-openapi/pkg/util/proto" ) // APIGroupVersion is a helper for exposing rest.Storage objects as http.Handlers via go-restful // It handles URLs of the form: // /${storage_key}[/${object_name}] // Where 'storage_key' points to a rest.Storage object stored in storage. // This object should contain all parameterization necessary for running a particular API version type APIGroupVersion struct { Storage map[string]rest.Storage Root string // GroupVersion is the external group version GroupVersion schema.GroupVersion // OptionsExternalVersion controls the Kubernetes APIVersion used for common objects in the apiserver // schema like api.Status, api.DeleteOptions, and metav1.ListOptions. Other implementors may // define a version "v1beta1" but want to use the Kubernetes "v1" internal objects. If // empty, defaults to GroupVersion. OptionsExternalVersion *schema.GroupVersion // MetaGroupVersion defaults to "meta.k8s.io/v1" and is the scheme group version used to decode // common API implementations like ListOptions. Future changes will allow this to vary by group // version (for when the inevitable meta/v2 group emerges). MetaGroupVersion *schema.GroupVersion // RootScopedKinds are the root scoped kinds for the primary GroupVersion RootScopedKinds sets.String // Serializer is used to determine how to convert responses from API methods into bytes to send over // the wire. Serializer runtime.NegotiatedSerializer ParameterCodec runtime.ParameterCodec Typer runtime.ObjectTyper Creater runtime.ObjectCreater Convertor runtime.ObjectConvertor Defaulter runtime.ObjectDefaulter Linker runtime.SelfLinker UnsafeConvertor runtime.ObjectConvertor EquivalentResourceRegistry runtime.EquivalentResourceRegistry // Authorizer determines whether a user is allowed to make a certain request. The Handler does a preliminary // authorization check using the request URI but it may be necessary to make additional checks, such as in // the create-on-update case Authorizer authorizer.Authorizer Admit admission.Interface MinRequestTimeout time.Duration // EnableAPIResponseCompression indicates whether API Responses should support compression // if the client requests it via Accept-Encoding EnableAPIResponseCompression bool // OpenAPIModels exposes the OpenAPI models to each individual handler. OpenAPIModels openapiproto.Models // The limit on the request body size that would be accepted and decoded in a write request. // 0 means no limit. MaxRequestBodyBytes int64 } // InstallREST registers the REST handlers (storage, watch, proxy and redirect) into a restful Container. // It is expected that the provided path root prefix will serve all operations. Root MUST NOT end // in a slash. func (g *APIGroupVersion) InstallREST(container *restful.Container) error { prefix := path.Join(g.Root, g.GroupVersion.Group, g.GroupVersion.Version) installer := &APIInstaller{ group: g, prefix: prefix, minRequestTimeout: g.MinRequestTimeout, enableAPIResponseCompression: g.EnableAPIResponseCompression, } apiResources, ws, registrationErrors := installer.Install() versionDiscoveryHandler := discovery.NewAPIVersionHandler(g.Serializer, g.GroupVersion, staticLister{apiResources}) versionDiscoveryHandler.AddToWebService(ws) container.Add(ws) return utilerrors.NewAggregate(registrationErrors) } // staticLister implements the APIResourceLister interface type staticLister struct { list []metav1.APIResource } func (s staticLister) ListAPIResources() []metav1.APIResource { return s.list } var _ discovery.APIResourceLister = &staticLister{}