96 lines
3.0 KiB
Go
96 lines
3.0 KiB
Go
// Copyright 2015 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 etcdhttp
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import (
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"errors"
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"math"
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"net/http"
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"strings"
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"time"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/coreos/pkg/capnslog"
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etcdErr "github.com/coreos/etcd/error"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/etcdserver/auth"
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"github.com/coreos/etcd/etcdserver/etcdhttp/httptypes"
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"github.com/coreos/etcd/pkg/logutil"
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)
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const (
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// time to wait for a Watch request
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defaultWatchTimeout = time.Duration(math.MaxInt64)
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)
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var (
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plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "etcdhttp")
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mlog = logutil.NewMergeLogger(plog)
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errClosed = errors.New("etcdhttp: client closed connection")
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)
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// writeError logs and writes the given Error to the ResponseWriter
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// If Error is an etcdErr, it is rendered to the ResponseWriter
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// Otherwise, it is assumed to be an InternalServerError
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func writeError(w http.ResponseWriter, r *http.Request, err error) {
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if err == nil {
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return
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}
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switch e := err.(type) {
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case *etcdErr.Error:
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e.WriteTo(w)
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case *httptypes.HTTPError:
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if et := e.WriteTo(w); et != nil {
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plog.Debugf("error writing HTTPError (%v) to %s", et, r.RemoteAddr)
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}
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case auth.Error:
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herr := httptypes.NewHTTPError(e.HTTPStatus(), e.Error())
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if et := herr.WriteTo(w); et != nil {
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plog.Debugf("error writing HTTPError (%v) to %s", et, r.RemoteAddr)
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}
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default:
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switch err {
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case etcdserver.ErrTimeoutDueToLeaderFail, etcdserver.ErrTimeoutDueToConnectionLost, etcdserver.ErrNotEnoughStartedMembers:
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mlog.MergeError(err)
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default:
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mlog.MergeErrorf("got unexpected response error (%v)", err)
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}
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herr := httptypes.NewHTTPError(http.StatusInternalServerError, "Internal Server Error")
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if et := herr.WriteTo(w); et != nil {
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plog.Debugf("error writing HTTPError (%v) to %s", et, r.RemoteAddr)
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}
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}
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}
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// allowMethod verifies that the given method is one of the allowed methods,
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// and if not, it writes an error to w. A boolean is returned indicating
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// whether or not the method is allowed.
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func allowMethod(w http.ResponseWriter, m string, ms ...string) bool {
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for _, meth := range ms {
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if m == meth {
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return true
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}
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}
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w.Header().Set("Allow", strings.Join(ms, ","))
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http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
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return false
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}
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func requestLogger(handler http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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plog.Debugf("[%s] %s remote:%s", r.Method, r.RequestURI, r.RemoteAddr)
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handler.ServeHTTP(w, r)
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})
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}
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