Package org.zeromq.ZMQ

Examples of org.zeromq.ZMQ.Poller

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    private void rebuild() {
        pollact = null;

        pollSize = pollers.size();
        pollset = new Poller(pollSize);

        pollact = new SPoller[pollSize];

        int itemNbr = 0;
        for (SPoller poller : pollers) {
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    @Test
    public void testPollerUnregister() {
        Context context = ZMQ.context(1);
        Socket socketOne = context.socket(ZMQ.SUB);
        Socket socketTwo = context.socket(ZMQ.REP);
        Poller poller = new ZMQ.Poller(2);
        poller.register(socketOne, ZMQ.Poller.POLLIN);
        poller.register(socketTwo, ZMQ.Poller.POLLIN);

        socketOne.setLinger(0);
        socketOne.close();
        socketTwo.setLinger(0);
        socketTwo.close();

        poller.unregister(socketOne);
        poller.unregister(socketTwo);
       
        context.term();
    }
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    }

    @Test(expected = ZMQException.class)
    public void testPollingInvalidSockets() {
        Context context = ZMQ.context(1);
        Poller poller = new ZMQ.Poller(1);
        Socket socketOne = context.socket(ZMQ.SUB);

        poller.register(socketOne, ZMQ.Poller.POLLIN);
        socketOne.close();
        poller.poll(100);

        context.term();
    }
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        Queue<String> workerQueue = new LinkedList<String>();

        while (!Thread.currentThread().isInterrupted()) {

            //  Initialize poll set
            Poller items = new Poller (2);

            //  Always poll for worker activity on backend
            items.register(backend, Poller.POLLIN);

            //  Poll front-end only if we have available workers
            if(workerQueue.size() > 0)
                items.register(frontend, Poller.POLLIN);

            if (items.poll() < 0)
                break;

            //  Handle worker activity on backend
            if (items.pollin(0)) {

                //  Queue worker address for LRU routing
                workerQueue.add (backend.recvStr ());

                //  Second frame is empty
                String empty = backend.recvStr ();
                assert (empty.length() == 0);

                //  Third frame is READY or else a client reply address
                String clientAddr = backend.recvStr ();

                //  If client reply, send rest back to frontend
                if (!clientAddr.equals("READY")) {

                    empty = backend.recvStr ();
                    assert (empty.length() == 0);

                    String reply = backend.recvStr ();
                    frontend.sendMore(clientAddr);
                    frontend.sendMore("");
                    frontend.send(reply);

                    if (--clientNbr == 0)
                        break;
                }

            }

            if (items.pollin(1)) {
                //  Now get next client request, route to LRU worker
                //  Client request is [address][empty][request]
                String clientAddr = frontend.recvStr ();

                String empty = frontend.recvStr ();
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      System.out.println("receiving " + kvMsg.getSequence());
      clonecli3.kvMap.put(kvMsg.getKey(), kvMsg);
    }

    Poller poller = new ZMQ.Poller(1);
    poller.register(subscriber);

    Random random = new Random();

    // now apply pending updates, discard out-of-sequence messages
    long alarm = System.currentTimeMillis() + 5000;
    while (true) {
      int rc = poller.poll(Math.max(0, alarm - System.currentTimeMillis()));
            if (rc == -1)
                break;              //  Context has been shut down

      if (poller.pollin(0)) {
                kvsimple kvMsg = kvsimple.recv(subscriber);
                if (kvMsg == null)
                    break;      //  Interrupted
                if (kvMsg.getSequence() > sequence) {
                    sequence = kvMsg.getSequence();
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        publisher.bind("tcp://*:5557");

        Socket collector = ctx.createSocket(ZMQ.PULL);
        collector.bind("tcp://*:5558");

        Poller poller = new Poller(2);
        poller.register(collector, Poller.POLLIN);
        poller.register(snapshot, Poller.POLLIN);

        long sequence = 0;
        while (!Thread.currentThread().isInterrupted()) {
            if (poller.poll(1000) < 0)
                break;              //  Context has been shut down

            // apply state updates from main thread
            if (poller.pollin(0)) {
                kvsimple kvMsg = kvsimple.recv(collector);
                if (kvMsg == null)  //  Interrupted
                    break;
                kvMsg.setSequence(++sequence);
                kvMsg.send(publisher);
                clonesrv4.kvMap.put(kvMsg.getKey(), kvMsg);
                System.out.printf("I: publishing update %5d\n", sequence);
            }

            // execute state snapshot request
            if (poller.pollin(1)) {
                byte[] identity = snapshot.recv(0);
                if (identity == null)
                    break;      //  Interrupted

                //  .until
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        publisher.bind("tcp://*:5557");

        Socket collector = ctx.createSocket(ZMQ.PULL);
        collector.bind("tcp://*:5558");

        Poller poller = new Poller(2);
        poller.register(collector, Poller.POLLIN);
        poller.register(snapshot, Poller.POLLIN);

        long sequence = 0;
        while (!Thread.currentThread().isInterrupted()) {
            if (poller.poll(1000) < 0)
                break;              //  Context has been shut down

            // apply state updates from main thread
            if (poller.pollin(0)) {
                kvsimple kvMsg = kvsimple.recv(collector);
                if (kvMsg == null)  //  Interrupted
                    break;
                kvMsg.setSequence(++sequence);
                kvMsg.send(publisher);
                clonesrv3.kvMap.put(kvMsg.getKey(), kvMsg);
                System.out.printf("I: publishing update %5d\n", sequence);
            }

            // execute state snapshot request
            if (poller.pollin(1)) {
                byte[] identity = snapshot.recv(0);
                if (identity == null)
                    break;      //  Interrupted
                String request = snapshot.recvStr();

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      pipe.send("READY"); // optional

      Socket snapshot = ctx.createSocket(ZMQ.ROUTER);
      snapshot.bind("tcp://*:5556");

      Poller poller = new ZMQ.Poller(2);
      poller.register(pipe, ZMQ.Poller.POLLIN);
      poller.register(snapshot, ZMQ.Poller.POLLIN);

      long stateSequence = 0;
      while (!Thread.currentThread().isInterrupted()) {
        if (poller.poll() < 0)
                    break;              //  Context has been shut down

        // apply state updates from main thread
        if (poller.pollin(0)) {
          kvsimple kvMsg = kvsimple.recv(pipe);
                    if (kvMsg == null)
                        break;
          StateManager.kvMap.put(kvMsg.getKey(), kvMsg);
          stateSequence = kvMsg.getSequence();
        }

        // execute state snapshot request
        if (poller.pollin(1)) {
          byte[] identity = snapshot.recv(0);
                    if (identity == null)
                        break;
          String request = new String(snapshot.recv(0));

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        //  us an API that does more with fewer calls:

        while (!Thread.currentThread().isInterrupted()) {

            //  Initialize poll set
            Poller items = new Poller (2);

            //  Always poll for worker activity on backend
            items.register(backend, Poller.POLLIN);

            //  Poll front-end only if we have available workers
            if(workerQueue.size() > 0)
                items.register(frontend, Poller.POLLIN);

            if (items.poll() < 0)
                break;      //  Interrupted

            //  Handle worker activity on backend
            if (items.pollin(0)) {

                ZMsg msg = ZMsg.recvMsg (backend);
                if (msg == null)
                    break;  //  Interrupted

                ZFrame identity = msg.unwrap ();
                //  Queue worker address for LRU routing
                workerQueue.add (identity);

                //  Forward message to client if it's not a READY
                ZFrame frame = msg.getFirst ();
                if (Arrays.equals (frame.getData (), WORKER_READY))
                    msg.destroy ();
                else
                    msg.send (frontend);
            }

            if (items.pollin(1)) {
                //  Get client request, route to first available worker
                ZMsg msg = ZMsg.recvMsg (frontend);
                if (msg != null) {
                    msg.wrap (workerQueue.poll ());
                    msg.send (backend);
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      System.out.println("receiving " + kvMsg.getSequence());
      clonecli4.kvMap.put(kvMsg.getKey(), kvMsg);
    }

    Poller poller = new Poller(1);
    poller.register(subscriber);

    Random random = new Random();

    // now apply pending updates, discard out-of-sequence messages
    long alarm = System.currentTimeMillis() + 5000;
    while (true) {
      int rc = poller.poll(Math.max(0, alarm - System.currentTimeMillis()));
            if (rc == -1)
                break;              //  Context has been shut down

      if (poller.pollin(0)) {
                kvsimple kvMsg = kvsimple.recv(subscriber);
                if (kvMsg == null)
                    break;      //  Interrupted
                if (kvMsg.getSequence() > sequence) {
                    sequence = kvMsg.getSequence();
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Related Classes of org.zeromq.ZMQ.Poller

  • ChatClient
  • clonecli3
  • clonecli4
  • clonecli5
  • clonesrv2$StateManager
  • clonesrv3
  • clonesrv4
  • lbbroker
  • lbbroker2
  • lruqueue
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