mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
// Copyright 2015 CoreOS, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"log"
|
|
"net/http"
|
|
"strconv"
|
|
)
|
|
|
|
// Handler for a http based key-value store backed by raft
|
|
type httpKVAPI struct {
|
|
store *kvstore
|
|
}
|
|
|
|
func (h *httpKVAPI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
key := r.RequestURI
|
|
switch {
|
|
case r.Method == "PUT":
|
|
v, err := ioutil.ReadAll(r.Body)
|
|
if err != nil {
|
|
log.Printf("Failed to read on PUT (%v)\n", err)
|
|
http.Error(w, "Failed on PUT", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
h.store.Propose(key, string(v))
|
|
|
|
// Optimistic-- no waiting for ack from raft. Value is not yet
|
|
// committed so a subsequent GET on the key may return old value
|
|
w.WriteHeader(http.StatusNoContent)
|
|
case r.Method == "GET":
|
|
if v, ok := h.store.Lookup(key); ok {
|
|
w.Write([]byte(v))
|
|
} else {
|
|
http.Error(w, "Failed to GET", http.StatusNotFound)
|
|
}
|
|
default:
|
|
w.Header().Set("Allow", "PUT")
|
|
w.Header().Add("Allow", "GET")
|
|
http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
|
|
}
|
|
}
|
|
|
|
// serveHttpKVAPI starts a key-value server with a GET/PUT API and listens.
|
|
func serveHttpKVAPI(port int, proposeC chan<- string, commitC <-chan *string, errorC <-chan error) {
|
|
srv := http.Server{
|
|
Addr: ":" + strconv.Itoa(port),
|
|
Handler: &httpKVAPI{newKVStore(proposeC, commitC, errorC)},
|
|
}
|
|
if err := srv.ListenAndServe(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|