mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
89 lines
2.0 KiB
Go
89 lines
2.0 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 (
|
|
"net"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
)
|
|
|
|
type Agent struct {
|
|
cmd *exec.Cmd
|
|
logfile *os.File
|
|
l net.Listener
|
|
}
|
|
|
|
func newAgent(etcd string) (*Agent, error) {
|
|
// check if the file exists
|
|
_, err := os.Stat(etcd)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
c := exec.Command(etcd)
|
|
|
|
f, err := os.Create("etcd.log")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &Agent{cmd: c, logfile: f}, nil
|
|
}
|
|
|
|
// start starts a new etcd process with the given args.
|
|
func (a *Agent) start(args ...string) error {
|
|
a.cmd = exec.Command(a.cmd.Path, args...)
|
|
a.cmd.Stdout = a.logfile
|
|
a.cmd.Stderr = a.logfile
|
|
return a.cmd.Start()
|
|
}
|
|
|
|
// stop stops the existing etcd process the agent started.
|
|
func (a *Agent) stop() error {
|
|
err := a.cmd.Process.Kill()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = a.cmd.Process.Wait()
|
|
return err
|
|
}
|
|
|
|
// restart restarts the stopped etcd process.
|
|
func (a *Agent) restart() error {
|
|
a.cmd = exec.Command(a.cmd.Path, a.cmd.Args[1:]...)
|
|
a.cmd.Stdout = a.logfile
|
|
a.cmd.Stderr = a.logfile
|
|
return a.cmd.Start()
|
|
}
|
|
|
|
// terminate stops the exiting etcd process the agent started
|
|
// and removes the data dir.
|
|
func (a *Agent) terminate() error {
|
|
a.stop()
|
|
args := a.cmd.Args
|
|
|
|
datadir := path.Join(a.cmd.Path, "*.etcd")
|
|
// only parse the simple case like "-data-dir /var/lib/etcd"
|
|
for i, arg := range args {
|
|
if arg == "-data-dir" {
|
|
datadir = args[i+1]
|
|
break
|
|
}
|
|
}
|
|
return os.RemoveAll(datadir)
|
|
}
|