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https://github.com/kubernetes-sigs/prometheus-adapter.git
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Check in the vendor directory
Travis seems to be having issues pulling deps, so we'll have to check in the vendor directory and prevent the makefile from trying to regenerate it normally.
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parent
98e16bc315
commit
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2526 changed files with 930931 additions and 4 deletions
126
vendor/k8s.io/apiserver/pkg/server/routes/flags.go
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vendored
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126
vendor/k8s.io/apiserver/pkg/server/routes/flags.go
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/*
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Copyright 2018 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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"fmt"
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"html/template"
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"io/ioutil"
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"net/http"
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"path"
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"sync"
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"github.com/golang/glog"
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"k8s.io/apiserver/pkg/server/mux"
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)
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var (
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lock = &sync.RWMutex{}
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registeredFlags = map[string]debugFlag{}
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)
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// DebugFlags adds handlers for flags under /debug/flags.
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type DebugFlags struct {
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}
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// Install registers the APIServer's flags handler.
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func (f DebugFlags) Install(c *mux.PathRecorderMux, flag string, handler func(http.ResponseWriter, *http.Request)) {
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c.UnlistedHandle("/debug/flags", http.HandlerFunc(f.Index))
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c.UnlistedHandlePrefix("/debug/flags/", http.HandlerFunc(f.Index))
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url := path.Join("/debug/flags", flag)
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c.UnlistedHandleFunc(url, handler)
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f.addFlag(flag)
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}
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// Index responds with the `/debug/flags` request.
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// For example, "/debug/flags/v" serves the "--v" flag.
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// Index responds to a request for "/debug/flags/" with an HTML page
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// listing the available flags.
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func (f DebugFlags) Index(w http.ResponseWriter, r *http.Request) {
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lock.RLock()
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defer lock.RUnlock()
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if err := indexTmpl.Execute(w, registeredFlags); err != nil {
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glog.Error(err)
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}
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}
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var indexTmpl = template.Must(template.New("index").Parse(`<html>
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<head>
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<title>/debug/flags/</title>
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</head>
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<body>
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/debug/flags/<br>
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<br>
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flags:<br>
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<table>
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{{range .}}
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<tr>{{.Flag}}<br>
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{{end}}
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</table>
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<br>
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full flags configurable<br>
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</body>
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</html>
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`))
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type debugFlag struct {
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Flag string
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}
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func (f DebugFlags) addFlag(flag string) {
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lock.Lock()
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defer lock.Unlock()
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registeredFlags[flag] = debugFlag{flag}
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}
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// StringFlagSetterFunc is a func used for setting string type flag.
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type StringFlagSetterFunc func(string) (string, error)
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// StringFlagPutHandler wraps an http Handler to set string type flag.
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func StringFlagPutHandler(setter StringFlagSetterFunc) http.HandlerFunc {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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switch {
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case req.Method == "PUT":
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body, err := ioutil.ReadAll(req.Body)
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if err != nil {
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writePlainText(http.StatusBadRequest, "error reading request body: "+err.Error(), w)
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return
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}
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defer req.Body.Close()
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response, err := setter(string(body))
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if err != nil {
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writePlainText(http.StatusBadRequest, err.Error(), w)
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return
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}
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writePlainText(http.StatusOK, response, w)
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return
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default:
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writePlainText(http.StatusNotAcceptable, "unsupported http method", w)
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return
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}
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})
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}
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// writePlainText renders a simple string response.
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func writePlainText(statusCode int, text string, w http.ResponseWriter) {
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w.Header().Set("Content-Type", "text/plain")
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w.WriteHeader(statusCode)
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fmt.Fprintln(w, text)
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}
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