func (as *AgentServer) Run() {
//register agent
killHeartBeaterChan := make(chan bool, 1)
go client.NewHeartBeater(as.Port, as.Master).StartAgentHeartBeat(killHeartBeaterChan, func(values url.Values) {
resource.AddToValues(values, as.computeResource, as.allocatedResource)
values.Add("dataCenter", *as.Option.DataCenter)
values.Add("rack", *as.Option.Rack)
})
for {
// Listen for an incoming connection.
conn, err := as.l.Accept()
if err != nil {
fmt.Println("Error accepting: ", err.Error())
os.Exit(1)
}
// Handle connections in a new goroutine.
as.wg.Add(1)
go func() {
defer as.wg.Done()
defer conn.Close()
as.handleRequest(conn)
}()
}
}
func (as *AgentServer) handleWriteConnection(r io.Reader, name string) {
as.name2StoreCond.L.Lock()
ds, ok := as.name2Store[name]
if ok {
as.doDelete(name)
}
s, err := store.NewLocalFileDataStore(as.dir, fmt.Sprintf("%s-%d", name, as.Port))
if err != nil {
log.Printf("Failed to create a queue on disk: %v", err)
as.name2StoreCond.L.Unlock()
return
}
as.name2Store[name] = NewLiveDataStore(s)
ds = as.name2Store[name]
// println(name, "is broadcasting...")
as.name2StoreCond.Broadcast()
as.name2StoreCond.L.Unlock()
//register stream
go client.NewHeartBeater(as.Port, *as.Option.Master).StartChannelHeartBeat(ds.killHeartBeater, name)
// println(name, "start writing.")
buf := make([]byte, 4)
for {
_, message, err := util.ReadBytes(r, buf)
if err == io.EOF {
// println("agent recv eof:", string(message.Bytes()))
break
}
if err == nil {
util.WriteBytes(ds.store, buf, message)
// println("agent recv:", string(message.Bytes()))
}
if message.Flag() != util.Data {
// println("finished writing", name)
break
}
}
}
