mirror of https://github.com/grafana/grafana.git
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
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package apiserver
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import (
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"encoding/json"
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"net/http"
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"net/http/httptest"
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"github.com/emicklei/go-restful/v3"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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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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genericapiserver "k8s.io/apiserver/pkg/server"
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aggregationv0alpha1api "github.com/grafana/grafana/pkg/aggregator/apis/aggregation/v0alpha1"
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)
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var (
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discoveryGroup = metav1.APIGroup{
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Name: aggregationv0alpha1api.SchemeGroupVersion.Group,
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Versions: []metav1.GroupVersionForDiscovery{
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{
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GroupVersion: aggregationv0alpha1api.SchemeGroupVersion.String(),
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Version: aggregationv0alpha1api.SchemeGroupVersion.Version,
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},
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},
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PreferredVersion: metav1.GroupVersionForDiscovery{
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GroupVersion: aggregationv0alpha1api.SchemeGroupVersion.String(),
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Version: aggregationv0alpha1api.SchemeGroupVersion.Version,
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},
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}
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)
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// apisProxyHandler serves the `/apis` endpoint.
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type apisProxyHandler struct {
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delegationTarget genericapiserver.DelegationTarget
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codecs serializer.CodecFactory
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}
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func (a *apisProxyHandler) handle(req *restful.Request, resp *restful.Response, chain *restful.FilterChain) {
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if req.Request.URL.Path != "/apis" && req.Request.URL.Path != "/apis/" {
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chain.ProcessFilter(req, resp)
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return
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}
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discoveryGroupList := &metav1.APIGroupList{
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Groups: []metav1.APIGroup{discoveryGroup},
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}
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rw := httptest.NewRecorder()
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a.delegationTarget.UnprotectedHandler().ServeHTTP(rw, req.Request)
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if rw.Code != http.StatusOK {
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http.Error(resp.ResponseWriter, rw.Body.String(), rw.Code)
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return
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}
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proxiedGroups := metav1.APIGroupList{}
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if err := json.Unmarshal(rw.Body.Bytes(), &proxiedGroups); err != nil {
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http.Error(resp.ResponseWriter, err.Error(), http.StatusInternalServerError)
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return
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}
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discoveryGroupList.Groups = append(discoveryGroupList.Groups, proxiedGroups.Groups...)
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responsewriters.WriteObjectNegotiated(a.codecs, negotiation.DefaultEndpointRestrictions, schema.GroupVersion{}, resp.ResponseWriter, req.Request, http.StatusOK, discoveryGroupList, false)
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}
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