mirror of https://github.com/k3s-io/k3s
70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
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/*
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Copyright 2014 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 routes
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import (
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"net/http"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/apiserver/pkg/endpoints/handlers/responsewriters"
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"k8s.io/apiserver/pkg/server/mux"
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)
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// ListedPathProvider is an interface for providing paths that should be reported at /.
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type ListedPathProvider interface {
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// ListedPaths is an alphabetically sorted list of paths to be reported at /.
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ListedPaths() []string
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}
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// ListedPathProviders is a convenient way to combine multiple ListedPathProviders
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type ListedPathProviders []ListedPathProvider
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// ListedPaths unions and sorts the included paths.
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func (p ListedPathProviders) ListedPaths() []string {
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ret := sets.String{}
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for _, provider := range p {
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for _, path := range provider.ListedPaths() {
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ret.Insert(path)
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}
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}
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return ret.List()
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}
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// Index provides a webservice for the http root / listing all known paths.
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type Index struct{}
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// Install adds the Index webservice to the given mux.
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func (i Index) Install(pathProvider ListedPathProvider, mux *mux.PathRecorderMux) {
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handler := IndexLister{StatusCode: http.StatusOK, PathProvider: pathProvider}
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mux.UnlistedHandle("/", handler)
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mux.UnlistedHandle("/index.html", handler)
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}
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// IndexLister lists the available indexes with the status code provided
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type IndexLister struct {
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StatusCode int
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PathProvider ListedPathProvider
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}
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// ServeHTTP serves the available paths.
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func (i IndexLister) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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responsewriters.WriteRawJSON(i.StatusCode, metav1.RootPaths{Paths: i.PathProvider.ListedPaths()}, w)
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}
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