Examples with Socket org.zeromq.ZMQ.Socket used on opensource projects

Example 41 with Socket

use of org.zeromq.ZMQ.Socket in project jeromq by zeromq.

the class clonecli1 method run.

public void run() {
    ZContext ctx = new ZContext();
    Socket subscriber = ctx.createSocket(ZMQ.SUB);
    subscriber.connect("tcp://localhost:5556");
    subscriber.subscribe(ZMQ.SUBSCRIPTION_ALL);
    while (true) {
        kvsimple kvMsg = kvsimple.recv(subscriber);
        if (kvMsg == null)
            break;
        clonecli1.kvMap.put(kvMsg.getKey(), kvMsg);
        System.out.println("receiving " + kvMsg);
        sequence.incrementAndGet();
    }
    ctx.destroy();
}

Example 42 with Socket

use of org.zeromq.ZMQ.Socket in project jeromq by zeromq.

the class clonecli2 method run.

public void run() {
    Context ctx = ZMQ.context(1);
    Socket snapshot = ctx.socket(ZMQ.DEALER);
    snapshot.connect("tcp://localhost:5556");
    Socket subscriber = ctx.socket(ZMQ.SUB);
    subscriber.connect("tcp://localhost:5557");
    subscriber.subscribe(ZMQ.SUBSCRIPTION_ALL);
    // get state snapshot
    snapshot.send("ICANHAZ?".getBytes(ZMQ.CHARSET), 0);
    long sequence = 0;
    while (true) {
        kvsimple kvMsg = kvsimple.recv(snapshot);
        if (kvMsg == null)
            break;
        sequence = kvMsg.getSequence();
        if ("KTHXBAI".equalsIgnoreCase(kvMsg.getKey())) {
            System.out.println("Received snapshot = " + kvMsg.getSequence());
            // done
            break;
        }
        System.out.println("receiving " + kvMsg.getSequence());
        clonecli2.kvMap.put(kvMsg.getKey(), kvMsg);
    }
    // now apply pending updates, discard out-of-getSequence messages
    while (true) {
        kvsimple kvMsg = kvsimple.recv(subscriber);
        if (kvMsg == null)
            break;
        if (kvMsg.getSequence() > sequence) {
            sequence = kvMsg.getSequence();
            System.out.println("receiving " + sequence);
            clonecli2.kvMap.put(kvMsg.getKey(), kvMsg);
        }
    }
}

Example 43 with Socket

use of org.zeromq.ZMQ.Socket in project jeromq by zeromq.

the class clonecli5 method run.

public void run() {
    ZContext ctx = new ZContext();
    Socket snapshot = ctx.createSocket(ZMQ.DEALER);
    snapshot.connect("tcp://localhost:5556");
    Socket subscriber = ctx.createSocket(ZMQ.SUB);
    subscriber.connect("tcp://localhost:5557");
    subscriber.subscribe(SUBTREE.getBytes(ZMQ.CHARSET));
    Socket publisher = ctx.createSocket(ZMQ.PUSH);
    publisher.connect("tcp://localhost:5558");
    Map<String, kvmsg> kvMap = new HashMap<String, kvmsg>();
    // get state snapshot
    snapshot.sendMore("ICANHAZ?");
    snapshot.send(SUBTREE);
    long sequence = 0;
    while (true) {
        kvmsg kvMsg = kvmsg.recv(snapshot);
        if (kvMsg == null)
            //  Interrupted
            break;
        sequence = kvMsg.getSequence();
        if ("KTHXBAI".equalsIgnoreCase(kvMsg.getKey())) {
            System.out.println("Received snapshot = " + kvMsg.getSequence());
            kvMsg.destroy();
            // done
            break;
        }
        System.out.println("receiving " + kvMsg.getSequence());
        kvMsg.store(kvMap);
    }
    Poller poller = ctx.createPoller(1);
    poller.register(subscriber);
    Random random = new Random();
    // now apply pending updates, discard out-of-getSequence messages
    long alarm = System.currentTimeMillis() + 5000;
    while (true) {
        int rc = poller.poll(Math.max(0, alarm - System.currentTimeMillis()));
        if (rc == -1)
            //  Context has been shut down
            break;
        if (poller.pollin(0)) {
            kvmsg kvMsg = kvmsg.recv(subscriber);
            if (kvMsg == null)
                //  Interrupted
                break;
            if (kvMsg.getSequence() > sequence) {
                sequence = kvMsg.getSequence();
                System.out.println("receiving " + sequence);
                kvMsg.store(kvMap);
            } else
                kvMsg.destroy();
        }
        if (System.currentTimeMillis() >= alarm) {
            kvmsg kvMsg = new kvmsg(0);
            kvMsg.fmtKey("%s%d", SUBTREE, random.nextInt(10000));
            kvMsg.fmtBody("%d", random.nextInt(1000000));
            kvMsg.setProp("ttl", "%d", random.nextInt(30));
            kvMsg.send(publisher);
            kvMsg.destroy();
            alarm = System.currentTimeMillis() + 1000;
        }
    }
    ctx.destroy();
}

Example 44 with Socket

use of org.zeromq.ZMQ.Socket in project jeromq by zeromq.

the class clonesrv1 method run.

public void run() {
    Context ctx = ZMQ.context(1);
    Socket publisher = ctx.socket(ZMQ.PUB);
    publisher.bind("tcp://*:5556");
    try {
        Thread.sleep(200);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    Random random = new Random();
    while (true) {
        long currentSequenceNumber = sequence.incrementAndGet();
        int key = random.nextInt(10000);
        int body = random.nextInt(1000000);
        ByteBuffer b = ByteBuffer.allocate(4);
        b.asIntBuffer().put(body);
        kvsimple kvMsg = new kvsimple(key + "", currentSequenceNumber, b.array());
        kvMsg.send(publisher);
        System.out.println("sending " + kvMsg);
    }
}

Example 45 with Socket

use of org.zeromq.ZMQ.Socket in project jeromq by zeromq.

the class clonesrv3 method run.

public void run() {
    ZContext ctx = new ZContext();
    Socket snapshot = ctx.createSocket(ZMQ.ROUTER);
    snapshot.bind("tcp://*:5556");
    Socket publisher = ctx.createSocket(ZMQ.PUB);
    publisher.bind("tcp://*:5557");
    Socket collector = ctx.createSocket(ZMQ.PULL);
    collector.bind("tcp://*:5558");
    Poller poller = ctx.createPoller(2);
    poller.register(collector, Poller.POLLIN);
    poller.register(snapshot, Poller.POLLIN);
    long sequence = 0;
    while (!Thread.currentThread().isInterrupted()) {
        if (poller.poll(1000) < 0)
            //  Context has been shut down
            break;
        // apply state updates from main thread
        if (poller.pollin(0)) {
            kvsimple kvMsg = kvsimple.recv(collector);
            if (//  Interrupted
            kvMsg == null)
                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)
                //  Interrupted
                break;
            String request = snapshot.recvStr();
            if (!request.equals("ICANHAZ?")) {
                System.out.println("E: bad request, aborting");
                break;
            }
            Iterator<Entry<String, kvsimple>> iter = kvMap.entrySet().iterator();
            while (iter.hasNext()) {
                Entry<String, kvsimple> entry = iter.next();
                kvsimple msg = entry.getValue();
                System.out.println("Sending message " + entry.getValue().getSequence());
                this.sendMessage(msg, identity, snapshot);
            }
            // now send end message with getSequence number
            System.out.println("Sending state snapshot = " + sequence);
            snapshot.send(identity, ZMQ.SNDMORE);
            kvsimple message = new kvsimple("KTHXBAI", sequence, ZMQ.SUBSCRIPTION_ALL);
            message.send(snapshot);
        }
    }
    System.out.printf(" Interrupted\n%d messages handled\n", sequence);
    ctx.destroy();
}