//Helper function to import the Master channel from masterAddr
func importMasterChan(t Task) (c chan WorkSummary, err os.Error) {
mu.Lock()
defer mu.Unlock()
if c, present := _sessions[t.Session.Id]; present {
log.Printf("Cached Session %v", t.Session.Id)
return c, nil
}
imp, err := netchan.Import("tcp", t.MasterAddr)
if err != nil {
log.Printf("Failed to create importer for %v", t.MasterAddr)
return nil, err
}
c = make(chan WorkSummary, 10)
imp.Import("masterChannel", c, netchan.Send, 10)
go func() {
err := <-imp.Errors()
log.Print(err)
}()
_sessions[t.Session.Id] = c
go cacheWatcher(t.Session)
return c, nil
}
func main() {
host := flag.String("host", "localhost:8001", "remote host")
flag.Parse()
fmt.Printf("attaching to %s\n", host)
imp, err := netchan.Import("tcp", *host)
if err != nil {
log.Fatal(err)
}
ch := make(chan string)
err = imp.ImportNValues("pingme", ch, netchan.Recv, 1, -1)
if err != nil {
log.Fatal(err)
}
errors := imp.Errors()
loop:
for {
select {
case t, ok := <-ch:
if !ok {
fmt.Printf("channel closed\n")
break loop
}
fmt.Printf("got %v\n", t)
case e := <-errors:
fmt.Printf("error %v\n", e)
break loop
}
}
}
//Creates a new Proxy importing 'workerChannel' from Worker running
//on workerAddr
func NewProxyWorker(workerAddr string) (p *ProxyWorker, err os.Error) {
log.Printf("Setting up a ProxyWorker for %s", workerAddr)
p = new(ProxyWorker)
imp, err := netchan.Import("tcp", workerAddr)
if err != nil {
return
}
p.importer = imp
return
}
func client(name string, port string, done chan bool) {
l := log.New(os.Stdout, fmt.Sprintf("client [%v]: ", name), 0)
ch_recv := make(chan chan_type)
imp, err := netchan.Import("tcp", port)
if err != nil {
l.Fatal(err)
}
err = imp.Import(name, ch_recv, netchan.Recv, 1)
if err != nil {
l.Fatal(err)
}
for v := range ch_recv {
l.Println(v)
}
done <- true
}
func main() {
var r *bool
var t *bool
r = flag.Bool("rps", false, "Play a game of Rock-Paper-Scissors")
t = flag.Bool("ttt", false, "Play a game of Tick-Tack-Toe")
flag.Parse()
args := flag.Args()
var port string
if len(args) == 1 {
port = args[0]
} else {
fmt.Fprint(os.Stderr, "You must provide a port to connect to.")
return
}
if *r && *t {
fmt.Fprintln(os.Stderr, "You can only play one game at a time.")
return
} else if !(*r || *t) {
// connext to an exporter with an importer
// run the importer loop
v2 := games.NewView()
importer, err := netchan.Import("tcp", "localhost"+port)
if err != nil {
fmt.Fprintln(os.Stderr, err.String())
return
}
err = importer.Import("Request", v2.Request, netchan.Recv, 1)
if err != nil {
fmt.Fprintln(os.Stderr, err.String())
return
}
err = importer.Import("Responce", v2.Response, netchan.Send, 1)
if err != nil {
fmt.Fprintln(os.Stderr, err.String())
return
}
ov2 := &games.ViewView{v2, os.Stdin, os.Stdout}
ov2.Loop()
return
}
var game games.Igame
if *r {
game = rps.NewGame()
} else if *t {
game = ttt.NewGame()
}
v1 := games.NewView()
v2 := games.NewView() // <- this will be the exported/inported thingy
ref := games.NewReferee(game, v1, v2)
exporter := netchan.NewExporter()
exporter.Export("Request", v2.Request, netchan.Send)
exporter.Export("Responce", v2.Response, netchan.Recv)
exporter.ListenAndServe("tcp", port)
ov1 := &games.ViewView{v1, os.Stdin, os.Stdout}
go ov1.Loop()
ref.Loop()
return
}
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: share [options] tcp-addr\n")
flag.PrintDefaults()
os.Exit(2)
}
flag.Parse()
if flag.NArg() != 1 {
flag.Usage()
return
}
addr := flag.Arg(0)
if *server {
exp := netchan.NewExporter()
if err := exp.ListenAndServe("tcp", addr); err != nil {
log.Fatal("listen failed: ", err)
}
listener, err := ncnet.Listen(exp, "ctl")
if err != nil {
log.Fatal("ncnet listen failed: ", err)
}
srv := &Server{
exp: exp,
clients: make(map[string]*rpc.Client),
}
rpcsrv := rpc.NewServer()
if err := rpcsrv.Register(srv); err != nil {
log.Fatal("rpcsrv register failed: ", err)
}
rpcsrv.Accept(listener)
listener.Close()
return
}
imp, err := netchan.Import("tcp", addr)
if err != nil {
log.Fatal("netchan import failed: ", err)
}
srvconn, err := ncnet.Dial(imp, "ctl")
if err != nil {
log.Fatal("ncnet dial failed: ", err)
}
srv := rpc.NewClient(srvconn)
var clientId string
if err := srv.Call("Server.Publish", clientName, &clientId); err != nil {
log.Fatal("publish failed: %v", err)
}
clientsrv := rpc.NewServer()
if err := clientsrv.Register(Client{}); err != nil {
log.Fatal("clientsrv register failed: ", err)
}
clientconn, err := ncnet.Dial(imp, clientId)
if err != nil {
log.Fatalf("ncnet dial %q failed: %v", clientId, err)
}
go clientsrv.ServeConn(clientconn)
interact(srv)
clientconn.Close()
time.Sleep(0.1e9) // wait for close to propagate
}