mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
96 lines
2.5 KiB
Go
96 lines
2.5 KiB
Go
// Copyright 2016 CoreOS, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package runtime
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import (
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"io/ioutil"
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"net"
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"net/http"
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"sort"
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"strings"
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)
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type httpHandler struct{}
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func serve(host string) error {
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ln, err := net.Listen("tcp", host)
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if err != nil {
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return err
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}
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go http.Serve(ln, &httpHandler{})
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return nil
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}
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func (*httpHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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key := r.RequestURI
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if len(key) == 0 || key[0] != '/' {
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http.Error(w, "malformed request URI", http.StatusBadRequest)
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return
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}
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key = key[1:]
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switch {
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// sets the failpoint
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case r.Method == "PUT":
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v, err := ioutil.ReadAll(r.Body)
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if err != nil {
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http.Error(w, "failed ReadAll in PUT", http.StatusBadRequest)
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return
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}
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unlock, eerr := enableAndLock(key, string(v))
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if eerr != nil {
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http.Error(w, "failed to set failpoint "+string(key), http.StatusBadRequest)
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return
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}
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w.WriteHeader(http.StatusNoContent)
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if f, ok := w.(http.Flusher); ok {
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// flush before unlocking so a panic failpoint won't
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// take down the http server before it sends the response
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f.Flush()
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}
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unlock()
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// gets status of the failpoint
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case r.Method == "GET":
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if len(key) == 0 {
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fps := List()
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sort.Strings(fps)
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lines := make([]string, len(fps))
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for i := range lines {
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s, _ := Status(fps[i])
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lines[i] = fps[i] + "=" + s
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}
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w.Write([]byte(strings.Join(lines, "\n") + "\n"))
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} else {
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status, err := Status(key)
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if err != nil {
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http.Error(w, "failed to GET: "+err.Error(), http.StatusNotFound)
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}
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w.Write([]byte(status + "\n"))
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}
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// deactivates a failpoint
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case r.Method == "DELETE":
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if err := Disable(key); err != nil {
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http.Error(w, "failed to delete failpoint "+err.Error(), http.StatusBadRequest)
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return
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}
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w.WriteHeader(http.StatusNoContent)
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default:
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w.Header().Add("Allow", "DELETE")
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w.Header().Add("Allow", "GET")
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w.Header().Set("Allow", "PUT")
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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}
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}
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