func New(primary bool, local, remote string) (bstar *Bstar, err error) {
bstar = &Bstar{}
// Initialize the Binary Star
bstar.Reactor = zmq.NewReactor()
if primary {
bstar.state = state_PRIMARY
} else {
bstar.state = state_BACKUP
}
// Create publisher for state going to peer
bstar.statepub, err = zmq.NewSocket(zmq.PUB)
bstar.statepub.Bind(local)
// Create subscriber for state coming from peer
bstar.statesub, err = zmq.NewSocket(zmq.SUB)
bstar.statesub.SetSubscribe("")
bstar.statesub.Connect(remote)
// Set-up basic reactor events
bstar.Reactor.AddChannelTime(time.Tick(bstar_HEARTBEAT), 1,
func(i interface{}) error { return bstar.send_state() })
bstar.Reactor.AddSocket(bstar.statesub, zmq.POLLIN,
func(e zmq.State) error { return bstar.recv_state() })
return
}
func main() {
srv := &clonesrv_t{
port: 5556,
kvmap: make(map[string]*kvmsg.Kvmsg),
}
// Set up our clone server sockets
srv.snapshot, _ = zmq.NewSocket(zmq.ROUTER)
srv.snapshot.Bind(fmt.Sprint("tcp://*:", srv.port))
srv.publisher, _ = zmq.NewSocket(zmq.PUB)
srv.publisher.Bind(fmt.Sprint("tcp://*:", srv.port+1))
srv.collector, _ = zmq.NewSocket(zmq.PULL)
srv.collector.Bind(fmt.Sprint("tcp://*:", srv.port+2))
// Register our handlers with reactor
reactor := zmq.NewReactor()
reactor.AddSocket(srv.snapshot, zmq.POLLIN,
func(e zmq.State) error { return snapshots(srv) })
reactor.AddSocket(srv.collector, zmq.POLLIN,
func(e zmq.State) error { return collector(srv) })
reactor.AddChannelTime(time.Tick(1000*time.Millisecond), 1,
func(v interface{}) error { return flush_ttl(srv) })
log.Println(reactor.Run(100 * time.Millisecond)) // precision: .1 seconds
}
func main() {
lbbroker := &lbbroker_t{}
lbbroker.frontend, _ = zmq.NewSocket(zmq.ROUTER)
lbbroker.backend, _ = zmq.NewSocket(zmq.ROUTER)
defer lbbroker.frontend.Close()
defer lbbroker.backend.Close()
lbbroker.frontend.Bind("ipc://frontend.ipc")
lbbroker.backend.Bind("ipc://backend.ipc")
for client_nbr := 0; client_nbr < NBR_CLIENTS; client_nbr++ {
go client_task()
}
for worker_nbr := 0; worker_nbr < NBR_WORKERS; worker_nbr++ {
go worker_task()
}
// Queue of available workers
lbbroker.workers = make([]string, 0, 10)
// Prepare reactor and fire it up
lbbroker.reactor = zmq.NewReactor()
lbbroker.reactor.AddSocket(lbbroker.backend, zmq.POLLIN,
func(e zmq.State) error { return handle_backend(lbbroker) })
lbbroker.reactor.Run(-1)
}
// Start processing incoming messages from ØMQ
func (transporter *ZmqTransporter) Start(server raft.Server) {
transporter.server = server
transporter.running = true
go func() {
reactor := zmq.NewReactor()
reactor.AddSocket(transporter.incoming, zmq.POLLIN, func(zmq.State) error { transporter.parseIncomingPackets(); return nil })
var chId uint64
chId = reactor.AddChannel(transporter.stop, 1, func(interface{}) error {
transporter.running = false
reactor.RemoveChannel(chId)
reactor.RemoveSocket(transporter.incoming)
return nil
})
for transporter.running {
glog.V(2).Info("Entering reactor")
err := reactor.Run(100 * time.Millisecond)
if err != nil && err.Error() != "No sockets to poll, no channels to read" {
glog.Infof("Got error from ZMQ reactor: %v", err)
}
}
transporter.stop <- true
}()
}