mirror of
https://github.com/k3s-io/k3s.git
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74 lines
2.4 KiB
Go
74 lines
2.4 KiB
Go
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/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package discovery
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import (
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"net/http"
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"github.com/emicklei/go-restful"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apiserver/pkg/endpoints/handlers/negotiation"
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"k8s.io/apiserver/pkg/endpoints/handlers/responsewriters"
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)
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// APIGroupHandler creates a webservice serving the supported versions, preferred version, and name
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// of a group. E.g., such a web service will be registered at /apis/extensions.
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type APIGroupHandler struct {
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serializer runtime.NegotiatedSerializer
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group metav1.APIGroup
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}
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func NewAPIGroupHandler(serializer runtime.NegotiatedSerializer, group metav1.APIGroup) *APIGroupHandler {
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if keepUnversioned(group.Name) {
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// Because in release 1.1, /apis/extensions returns response with empty
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// APIVersion, we use stripVersionNegotiatedSerializer to keep the
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// response backwards compatible.
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serializer = stripVersionNegotiatedSerializer{serializer}
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}
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return &APIGroupHandler{
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serializer: serializer,
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group: group,
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}
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}
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func (s *APIGroupHandler) WebService() *restful.WebService {
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mediaTypes, _ := negotiation.MediaTypesForSerializer(s.serializer)
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ws := new(restful.WebService)
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ws.Path(APIGroupPrefix + "/" + s.group.Name)
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ws.Doc("get information of a group")
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ws.Route(ws.GET("/").To(s.handle).
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Doc("get information of a group").
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Operation("getAPIGroup").
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Produces(mediaTypes...).
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Consumes(mediaTypes...).
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Writes(metav1.APIGroup{}))
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return ws
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}
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// handle returns a handler which will return the api.GroupAndVersion of the group.
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func (s *APIGroupHandler) handle(req *restful.Request, resp *restful.Response) {
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s.ServeHTTP(resp.ResponseWriter, req.Request)
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}
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func (s *APIGroupHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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responsewriters.WriteObjectNegotiated(s.serializer, schema.GroupVersion{}, w, req, http.StatusOK, &s.group)
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}
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