func watchFaes() {
ch := make(chan []string, 10)
go etclib.WatchService(etclib.SERVICE_FAE, ch)
for {
select {
case <-ch:
endpoints, err := etclib.ServiceEndpoints(etclib.SERVICE_FAE)
if err == nil {
log.Trace("fae endpoints updated: %+v", endpoints)
dumpFaeConfigPhp(endpoints)
} else {
log.Error("fae: %s", err)
}
}
}
log.Warn("fae watcher died")
}
func (this *Proxy) StartMonitorCluster() {
if !this.Enabled() {
log.Warn("servant proxy disabled by proxy config section")
return
}
peersChan := make(chan []string, 10)
go etclib.WatchService(etclib.SERVICE_FAE, peersChan)
for {
select {
case <-peersChan:
peers, err := etclib.ServiceEndpoints(etclib.SERVICE_FAE)
if err == nil {
if !this.clusterTopologyReady {
this.clusterTopologyReady = true
close(this.clusterTopologyChan)
}
if len(peers) == 0 {
// TODO panic?
log.Warn("Empty cluster fae peers")
} else {
// no lock, because running within 1 goroutine
this.selector.SetPeersAddr(peers...)
this.refreshPeers(peers)
log.Info("Cluster latest fae nodes: %+v", peers)
}
} else {
log.Error("Cluster peers: %s", err)
}
}
}
// should never get here
log.Warn("Cluster peers monitor died")
}