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此仓库是为了提升国内下载速度的镜像仓库,每日同步一次。 原始仓库: https://github.com/coreos/etcd
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http.go 2.79 KB
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// 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 etcdhttp
import (
"errors"
"math"
"net/http"
"strings"
"time"
"github.com/coreos/etcd/Godeps/_workspace/src/github.com/coreos/pkg/capnslog"
etcdErr "github.com/coreos/etcd/error"
"github.com/coreos/etcd/etcdserver"
"github.com/coreos/etcd/etcdserver/auth"
"github.com/coreos/etcd/etcdserver/etcdhttp/httptypes"
)
const (
// time to wait for response from EtcdServer requests
// 5s for disk and network delay + 10*heartbeat for commit and possible
// leader switch
// TODO: use heartbeat set in etcdserver
defaultServerTimeout = 5*time.Second + 10*(100*time.Millisecond)
// time to wait for a Watch request
defaultWatchTimeout = time.Duration(math.MaxInt64)
)
var (
plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "etcdhttp")
errClosed = errors.New("etcdhttp: client closed connection")
)
// writeError logs and writes the given Error to the ResponseWriter
// If Error is an etcdErr, it is rendered to the ResponseWriter
// Otherwise, it is assumed to be an InternalServerError
func writeError(w http.ResponseWriter, err error) {
if err == nil {
return
}
switch e := err.(type) {
case *etcdErr.Error:
e.WriteTo(w)
case *httptypes.HTTPError:
e.WriteTo(w)
case auth.Error:
herr := httptypes.NewHTTPError(e.HTTPStatus(), e.Error())
herr.WriteTo(w)
default:
if err == etcdserver.ErrTimeoutDueToLeaderFail {
plog.Error(err)
} else {
plog.Errorf("got unexpected response error (%v)", err)
}
herr := httptypes.NewHTTPError(http.StatusInternalServerError, "Internal Server Error")
herr.WriteTo(w)
}
}
// allowMethod verifies that the given method is one of the allowed methods,
// and if not, it writes an error to w. A boolean is returned indicating
// whether or not the method is allowed.
func allowMethod(w http.ResponseWriter, m string, ms ...string) bool {
for _, meth := range ms {
if m == meth {
return true
}
}
w.Header().Set("Allow", strings.Join(ms, ","))
http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
return false
}
func requestLogger(handler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
plog.Debugf("[%s] %s remote:%s", r.Method, r.RequestURI, r.RemoteAddr)
handler.ServeHTTP(w, r)
})
}
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