func (this *electServer) doJoin(r *http.Request) error {
var command raft.DefaultJoinCommand
if err := json.NewDecoder(r.Body).Decode(&command); err != nil {
return web.HTTPError{400, "MSG_ERROR"}
}
_, err := this.raftServer.Do(&command)
if err != nil {
log.Logf("raft do faild : %+v", err.Error())
return err
}
log.Logf("raft join success")
return nil
}
func (this *electServer) JoinSelf() (err error) {
log.Logf("attemping to join self")
_, err = this.raftServer.Do(&raft.DefaultJoinCommand{
Name: this.Name,
ConnectionString: this.HttpAddr(),
})
return
}
func (this *Sheep) Start() (err error) {
log.Logf("sheep start : %+v", this.Name)
if err = this.Config.InitAll(); err != nil {
return
}
this.Status = constant.STATUS_STARTING
err = this.cmd.Start()
if err != nil {
this.Status = constant.STATUS_START_FAILED
log.Errorf("start faild:%s:%+v", err.Error(), *this)
return err
}
log.Logf("sheep %s started", this.Name)
go this.watch()
this.Status = constant.STATUS_STARTED
time.Sleep(time.Second)
return nil
}
func (this *electServer) JoinLeader(leader string) (err error) {
log.Logf("attemping to join leader : %s", leader)
command := raft.DefaultJoinCommand{
Name: this.Name,
ConnectionString: this.HttpAddr(),
}
var b bytes.Buffer
if err = json.NewEncoder(&b).Encode(command); err != nil {
return
}
resp, err := http.Post("http://"+leader+"/join", "application/json", &b)
if err != nil {
return
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return fmt.Errorf("bad status code : %+v", resp.StatusCode)
}
return
}
func (this *Sheep) Stop() (err error) {
if this.cmd.Process == nil {
return errors.New(fmt.Sprintf("%s not started.", this.Name))
}
if this.cmd.ProcessState == nil {
log.Log("process state unvailable")
} else if this.cmd.ProcessState.Exited() {
return errors.New(fmt.Sprintf("%s has stoped.", this.Name))
}
this.Status = constant.STATUS_STOPING
log.Logf("signal:%d", this.StopSignal)
if err = this.cmd.Process.Signal(syscall.Signal(this.StopSignal)); err == nil {
this.Status = constant.STATUS_STOPPED
} else {
log.Error("stop faild:", err.Error())
}
return err
}