func main() {
flag.Parse()
if flag.NArg() < 1 {
fmt.Println("Usage: pingpong5 num_runs hideTrace")
return
} else if flag.NArg() > 1 {
showPingPong = false
}
numRuns, _ := strconv.Atoi(flag.Arg(0))
done := make(chan bool)
connNow := make(chan bool)
//start two goroutines to setup a unix sock connection
//connect two routers thru unix sock
//and then hook up Pinger and Ponger to the routers
go func() { //setup Pinger sock conn
//wait for ponger up
<-connNow
//set up an io conn to ponger thru tcp sock
conn, _ := net.Dial("tcp", "", "[::]:9099")
fmt.Println("ping conn up")
//create router and connect it to io conn
rot := router.New(router.StrID(), 32, router.BroadcastPolicy)
rot.ConnectRemote(conn, router.GobMarshaling)
//hook up Pinger and Ponger
newPinger(rot, done, numRuns)
}()
go func() { //setup Ponger sock conn
//wait to set up an io conn thru tcp sock
l, _ := net.Listen("tcp", ":9099")
connNow <- true //notify pinger that ponger's ready to accept
conn, _ := l.Accept()
fmt.Println("pong conn up")
//create router and connect it to io conn
rot := router.New(router.StrID(), 32, router.BroadcastPolicy)
rot.ConnectRemote(conn, router.GobMarshaling)
//hook up Ponger
newPonger(rot, done)
}()
//wait for ping-pong to finish
<-done
<-done
}
func main() {
flag.Parse()
if flag.NArg() < 1 {
fmt.Println("Usage: pingpong3 num_runs hideTrace")
return
} else if flag.NArg() > 1 {
showPingPong = false
}
numRuns, _ := strconv.Atoi(flag.Arg(0))
//alloc two routers to connect them
rot1 := router.New(router.StrID(), 32, router.BroadcastPolicy)
rot2 := router.New(router.StrID(), 32, router.BroadcastPolicy)
rot1.Connect(rot2)
done := make(chan bool)
//hook up Pinger and Ponger
newPinger(rot1, done, numRuns)
newPonger(rot2, done)
//wait for ping-pong to finish
<-done
<-done
}
func NewServant(n string, role ServantRole, done chan bool) *Servant {
s := new(Servant)
s.Rot = router.New(router.StrID(), 32, router.BroadcastPolicy /*, n, router.ScopeLocal*/)
s.role = role
s.name = n
//start system tasks, ServiceTask will be created when clients connect
NewSysMgrTask(s.Rot, n, role)
NewDbTask(s.Rot, n, role)
NewFaultMgrTask(s.Rot, n, role)
//run Servant mainloop to wait for client connection
go s.Run(done)
return s
}
func main() {
l, err := net.Listen("tcp", ":0")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(l.Addr().String())
subjMap := make(map[string]*Subject)
rot := router.New(router.StrID(), 32, router.BroadcastPolicy /*, "chatsrv", router.ScopeLocal*/)
//start server mainloop in a separate goroutine, and recv client conn in main goroutine
go func() {
//subscribe to remote publications, so learn what subjects are created
pubChan := make(chan *router.IdChanInfoMsg)
//attach a recv chan with a "chan BindEvent"
//this recv chan will not be closed when all senders detach
bindChan := make(chan *router.BindEvent, 1)
rot.AttachRecvChan(rot.NewSysID(router.PubId, router.ScopeRemote), pubChan, bindChan)
//stopChan to notify when all people leave a subject
stopChan := make(chan string, 36)
for {
select {
case idstr := <-stopChan:
subjMap[idstr] = nil, false
case pub := <-pubChan:
//process recved client publication of subjects
for _, v := range pub.Info {
id := v.Id.(*router.StrId) //get the real id type
subj, ok := subjMap[id.Val]
if ok {
continue
}
fmt.Printf("add subject: %v\n", id.Val)
//add a new subject with ScopeRemote, so that msgs are forwarded
//to peers in connected routers
id.ScopeVal = router.ScopeRemote
id.MemberVal = router.MemberLocal
subj = newSubject()
subjMap[id.Val] = subj
//subscribe to new subjects, forward recved msgs to other
rot.AttachSendChan(id, subj.sendChan)
rot.AttachRecvChan(id, subj.recvChan)
//start forwarding
go func(subjname string) {
for val := range subj.recvChan {
fmt.Printf("chatsrv forward: subject[%v], msg[%s]\n", subjname, val)
subj.sendChan <- val
}
stopChan <- subjname
fmt.Printf("chatsrv stop forwarding for : %v\n", subjname)
}(id.Val)
}
}
}
}()
//keep accepting client conn and connect local router to it
for {
conn, err := l.Accept()
if err != nil {
fmt.Println(err)
return
}
fmt.Println("one client connect")
_, err = rot.ConnectRemote(conn, router.JsonMarshaling)
if err != nil {
fmt.Println(err)
return
}
}
//in fact never reach here
rot.Close()
l.Close()
}