Examples with ZMsg org.zeromq.ZMsg used on opensource projects

Example 36 with ZMsg

use of org.zeromq.ZMsg in project jeromq by zeromq.

the class mdbroker method mediate.

// ---------------------------------------------------------------------
/**
     * Main broker work happens here
     */
public void mediate() {
    while (!Thread.currentThread().isInterrupted()) {
        ZMQ.Poller items = ctx.createPoller(1);
        items.register(socket, ZMQ.Poller.POLLIN);
        if (items.poll(HEARTBEAT_INTERVAL) == -1)
            // Interrupted
            break;
        if (items.pollin(0)) {
            ZMsg msg = ZMsg.recvMsg(socket);
            if (msg == null)
                // Interrupted
                break;
            if (verbose) {
                log.format("I: received message:\n");
                msg.dump(log.out());
            }
            ZFrame sender = msg.pop();
            ZFrame empty = msg.pop();
            ZFrame header = msg.pop();
            if (MDP.C_CLIENT.frameEquals(header)) {
                processClient(sender, msg);
            } else if (MDP.W_WORKER.frameEquals(header))
                processWorker(sender, msg);
            else {
                log.format("E: invalid message:\n");
                msg.dump(log.out());
                msg.destroy();
            }
            sender.destroy();
            empty.destroy();
            header.destroy();
        }
        purgeWorkers();
        sendHeartbeats();
    }
    // interrupted
    destroy();
}

Example 37 with ZMsg

use of org.zeromq.ZMsg in project jeromq by zeromq.

the class mdbroker method sendToWorker.

/**
     * Send message to worker. If message is provided, sends that message. Does
     * not destroy the message, this is the caller's job.
     */
public void sendToWorker(Worker worker, MDP command, String option, ZMsg msgp) {
    ZMsg msg = msgp == null ? new ZMsg() : msgp.duplicate();
    // Stack protocol envelope to start of message
    if (option != null)
        msg.addFirst(new ZFrame(option));
    msg.addFirst(command.newFrame());
    msg.addFirst(MDP.W_WORKER.newFrame());
    // Stack routing envelope to start of message
    msg.wrap(worker.address.duplicate());
    if (verbose) {
        log.format("I: sending %s to worker\n", command);
        msg.dump(log.out());
    }
    msg.send(socket);
}

Example 38 with ZMsg

use of org.zeromq.ZMsg in project jeromq by zeromq.

the class lruqueue3 method run.

public void run() {
    ZContext context = new ZContext();
    //  Prepare our context and sockets
    Socket worker = context.createSocket(ZMQ.REQ);
    worker.connect("ipc://backend.ipc");
    ZFrame frame = new ZFrame(lruqueue3.LRU_READY);
    //  Tell backend we're ready for work
    frame.send(worker, 0);
    while (true) {
        ZMsg msg = ZMsg.recvMsg(worker);
        if (msg == null)
            break;
        msg.getLast().reset("OK".getBytes(ZMQ.CHARSET));
        msg.send(worker);
        System.out.println(Thread.currentThread().getName() + " Worker Sent OK");
    }
    context.destroy();
}