forked from coreos/etcd-operator
/
http.go
99 lines (87 loc) · 2.71 KB
/
http.go
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// Copyright 2016 The etcd-operator Authors
//
// 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 backup
import (
"encoding/json"
"net/http"
"time"
"github.com/coreos/etcd-operator/pkg/backup/backupapi"
"github.com/coreos/etcd-operator/pkg/backup/util"
"github.com/prometheus/client_golang/prometheus"
"github.com/sirupsen/logrus"
)
const (
HTTPHeaderEtcdVersion = "X-etcd-Version"
HTTPHeaderRevision = "X-Revision"
)
func (bc *BackupController) StartHTTP() {
http.HandleFunc(backupapi.APIV1+"/backup", bc.backupServer.ServeBackup)
http.HandleFunc(backupapi.APIV1+"/backupnow", bc.serveBackupNow)
http.HandleFunc(backupapi.APIV1+"/status", bc.serveStatus)
http.Handle("/metrics", prometheus.Handler())
logrus.Infof("listening on %v", bc.listenAddr)
panic(http.ListenAndServe(bc.listenAddr, nil))
}
type backupNowAck struct {
err error
status backupapi.BackupStatus
}
func (bc *BackupController) serveBackupNow(w http.ResponseWriter, r *http.Request) {
ackchan := make(chan backupNowAck, 1)
select {
case bc.backupNow <- ackchan:
case <-time.After(time.Minute):
http.Error(w, "timeout", http.StatusRequestTimeout)
return
}
select {
case ack := <-ackchan:
if ack.err != nil {
http.Error(w, ack.err.Error(), http.StatusInternalServerError)
return
}
e := json.NewEncoder(w)
err := e.Encode(ack.status)
if err != nil {
logrus.Errorf("failed to write backup status: %v", err)
}
case <-time.After(10 * time.Minute):
http.Error(w, "timeout", http.StatusRequestTimeout)
return
}
}
func (bc *BackupController) serveStatus(w http.ResponseWriter, r *http.Request) {
t, err := bc.backupManager.be.Total()
if err != nil {
http.Error(w, "failed to get total number of backups", http.StatusInternalServerError)
return
}
ts, err := bc.backupManager.be.TotalSize()
if err != nil {
http.Error(w, "failed to get total size of backups", http.StatusInternalServerError)
return
}
s := backupapi.ServiceStatus{
Backups: t,
BackupSize: util.ToMB(ts),
}
rbs := bc.recentBackupsStatus
if len(rbs) != 0 {
s.RecentBackup = &rbs[len(rbs)-1]
}
je := json.NewEncoder(w)
if err := je.Encode(&s); err != nil {
logrus.Errorf("failed to write service status to %s: %v", r.RemoteAddr, err)
}
}