func (r *apiGroupHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
// don't handle URLs that aren't /apis/<groupName>
if req.URL.Path != "/apis/"+r.groupName && req.URL.Path != "/apis/"+r.groupName+"/" {
http.Error(w, "", http.StatusNotFound)
return
}
apiServices, err := r.lister.List(labels.Everything())
if statusErr, ok := err.(*apierrors.StatusError); ok && err != nil {
responsewriters.WriteRawJSON(int(statusErr.Status().Code), statusErr.Status(), w)
return
}
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
apiServicesForGroup := []*apiregistrationapi.APIService{}
for _, apiService := range apiServices {
if apiService.Spec.Group == r.groupName {
apiServicesForGroup = append(apiServicesForGroup, apiService)
}
}
if len(apiServicesForGroup) == 0 {
http.Error(w, "", http.StatusNotFound)
return
}
discoveryGroup := convertToDiscoveryAPIGroup(apiServicesForGroup, r.serviceLister, r.endpointsLister)
if discoveryGroup == nil {
http.Error(w, "", http.StatusNotFound)
return
}
json, err := runtime.Encode(api.Codecs.LegacyCodec(), discoveryGroup)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if _, err := w.Write(json); err != nil {
panic(err)
}
}
// Install adds the Index webservice to the given mux.
func (i Index) Install(c *mux.APIContainer) {
c.UnlistedRoutes.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
status := http.StatusOK
if r.URL.Path != "/" && r.URL.Path != "/index.html" {
// Since "/" matches all paths, handleIndex is called for all paths for which there is no handler registered.
// We want to return a 404 status with a list of all valid paths, incase of an invalid URL request.
status = http.StatusNotFound
}
var handledPaths []string
// Extract the paths handled using restful.WebService
for _, ws := range c.RegisteredWebServices() {
handledPaths = append(handledPaths, ws.RootPath())
}
// Extract the paths handled using mux handler.
handledPaths = append(handledPaths, c.NonSwaggerRoutes.HandledPaths()...)
sort.Strings(handledPaths)
responsewriters.WriteRawJSON(status, metav1.RootPaths{Paths: handledPaths}, w)
})
}
// handleVersion writes the server's version information.
func (v Version) handleVersion(req *restful.Request, resp *restful.Response) {
responsewriters.WriteRawJSON(http.StatusOK, *v.Version, resp.ResponseWriter)
}
// TODO this should properly handle content type negotiation
// if the caller asked for protobuf and you write JSON bad things happen.
func (r *responder) Object(statusCode int, obj runtime.Object) {
responsewriters.WriteRawJSON(statusCode, obj, r.w)
}
