Example #1
0
func runZmqStream() {
	var context zmq.Context
	var socket zmq.Socket

	// connect to zmq
	var err error
	if context, err = zmq.NewContext(); err != nil {
		panic("No ZMQ Context?")
	}
	defer context.Close()

	if socket, err = context.NewSocket(zmq.SUB); err != nil {
		panic("No ZMQ Socket Outbound??")
	}
	defer socket.Close()
	socket.Connect("tcp://localhost:5558")
	socket.SetSockOptString(zmq.SUBSCRIBE, "")

	for {
		// block here, waiting for inbound requests
		msg, _ := socket.Recv(0)
		if len(msg) > 0 {
			parts := strings.Split(string(msg), "\n\n")
			process(parts[0])
		}
	}
}
Example #2
0
func set_id(socket zmq.Socket) {
	socket.SetSockOptString(zmq.IDENTITY, randomString())
}
Example #3
0
File: m2go.go Project: araddon/m2go
// the listen and server for mongrel, expects an address like this
// @addr = string config parameter like this:
//    m2go.ListenAndServe("tcp://127.0.0.1:9555|tcp://127.0.0.1:9556|54c6755b-9628-40a4-9a2d-cc82a816345e", handler)
func ListenAndServe(addr string, handler http.Handler) {
	var Context zmq.Context
	var SocketIn zmq.Socket
	var SocketOut zmq.Socket
	var hasExited bool
	var err error

	m2addr := strings.Split(addr, "|") //

	log.Printf("m2go serving  %s\n", addr)

	/*
	  Connection to ZMQ setup
	*/
	connect := func() {
		if Context, err = zmq.NewContext(); err != nil {
			panic("No ZMQ Context?")
		}

		// listen for incoming requests
		if SocketIn, err = Context.NewSocket(zmq.PULL); err != nil {
			panic("No ZMQ Socket?")
		}
		SocketIn.Connect(m2addr[0])

		if SocketOut, err = Context.NewSocket(zmq.PUB); err != nil {
			panic("No ZMQ Socket Outbound??")
		}
		// outbound response on a different channel
		SocketOut.SetSockOptString(zmq.IDENTITY, m2addr[2])
		//socket.SetSockOptString(zmq.SUBSCRIBE, filter)
		SocketOut.Connect(m2addr[1])
	}

	connect()

	handleResponse := func(response []byte) {
		SocketOut.Send(response, 0)
	}
	stopper := func() {
		if !hasExited {
			hasExited = true
			SocketOut.Close()
			SocketIn.Close()
			Context.Close()
		}
	}
	defer stopper()

	for {
		// each inbound request
		m2data, err := SocketIn.Recv(0)
		//log.Println(string(m2data))
		if err != nil {
			log.Println("ZMQ Socket Input accept error ", err.Error())
		} else {
			go HandleM2Request(m2data, handleResponse, handler)
		}
	}
	log.Print("after close of runner")
}