func (s *Server) loopEvents() {
ticker := time.NewTicker(time.Second)
defer ticker.Stop()
var tick int = 0
for s.info.State == models.PROXY_STATE_ONLINE {
select {
case <-s.kill:
log.Infof("mark offline, proxy is killed: %s", s.info.Id)
s.markOffline()
case e := <-s.evtbus:
evtPath := getEventPath(e)
log.Infof("got event %s, %v, lastActionSeq %d", s.info.Id, e, s.lastActionSeq)
if strings.Index(evtPath, models.GetActionResponsePath(s.conf.productName)) == 0 {
seq, err := strconv.Atoi(path.Base(evtPath))
if err != nil {
log.ErrorErrorf(err, "parse action seq failed")
} else {
if seq < s.lastActionSeq {
log.Infof("ignore seq = %d", seq)
continue
}
}
}
s.processAction(e)
case <-ticker.C:
if maxTick := s.conf.pingPeriod; maxTick != 0 {
if tick++; tick >= maxTick {
s.router.KeepAlive()
tick = 0
}
}
}
}
}
func (s *Server) handleTopoEvent() {
ticker := time.NewTicker(time.Second * 5)
defer ticker.Stop()
for {
select {
case e := <-s.evtbus:
switch e.(type) {
case *killEvent:
s.handleMarkOffline()
default:
evtPath := getEventPath(e)
log.Infof("got event %s, %v, lastActionSeq %d", s.info.Id, e, s.lastActionSeq)
if strings.Index(evtPath, models.GetActionResponsePath(s.conf.productName)) == 0 {
seq, err := strconv.Atoi(path.Base(evtPath))
if err != nil {
log.WarnErrorf(err, "parse action seq failed")
} else {
if seq < s.lastActionSeq {
log.Infof("ignore seq = %d", seq)
continue
}
}
}
log.Infof("got event %s, %v, lastActionSeq %d", s.info.Id, e, s.lastActionSeq)
s.processAction(e)
}
case <-ticker.C:
for _, bc := range s.pool {
bc.KeepAlive()
}
}
}
}
// TODO Lius: main event handler waiting for prepared struct (already do read)
func (s *Server) handleTopoEvent() {
// do Listen in Server.Run by outer main invoke
for {
select {
case r := <-s.reqCh: // Lius: send to backend
if s.slots[r.slotIdx].slotInfo.State.Status == models.SLOT_STATUS_PRE_MIGRATE {
s.bufferedReq.PushBack(r)
continue
}
// Lius: buffed request because of migrating keys or other strategy
for e := s.bufferedReq.Front(); e != nil; {
next := e.Next()
s.dispatch(e.Value.(*PipelineRequest))
s.bufferedReq.Remove(e)
e = next
}
// Lius: send current request
s.dispatch(r)
case e := <-s.evtbus:
switch e.(type) {
case *killEvent:
s.handleMarkOffline()
e.(*killEvent).done <- nil
default:
evtPath := GetEventPath(e)
log.Infof("got event %s, %v, lastActionSeq %d", s.pi.Id, e, s.lastActionSeq)
if strings.Index(evtPath, models.GetActionResponsePath(s.conf.productName)) == 0 {
seq, err := strconv.Atoi(path.Base(evtPath))
if err != nil {
log.Warning(err)
} else {
if seq < s.lastActionSeq {
log.Info("ignore", seq)
continue
}
}
}
log.Infof("got event %s, %v, lastActionSeq %d", s.pi.Id, e, s.lastActionSeq)
s.processAction(e)
}
}
}
}
func (top *Topology) GetActionResponsePath(seq int) string {
return path.Join(models.GetActionResponsePath(top.ProductName), top.zkConn.Seq2Str(int64(seq)))
}