Examples with PublisherConf org.nustaq.fastcast.config.PublisherConf used on opensource projects

Example 1 with PublisherConf

use of org.nustaq.fastcast.config.PublisherConf in project fast-cast by RuedigerMoeller.

the class MPPublisher method main.

public static void main(String[] arg) {
    // 5 chars MAX !!
    FastCast.getFastCast().setNodeId("MPUB");
    configureFastCast();
    FCPublisher pub = FastCast.getFastCast().onTransport("default").publish(// unique-per-transport topic id
    new PublisherConf(1).numPacketHistory(// how many packets are kept for retransmission requests
    33_000).pps(// packets per second rate limit.
    10_000));
    MultipleProtocol.initStructFactory();
    FSTStructAllocator onHeapAlloc = new FSTStructAllocator(10_000);
    AMessage aMsg = onHeapAlloc.newStruct(new AMessage());
    OtherMessage other = onHeapAlloc.newStruct(new OtherMessage());
    ComposedMessage composed = onHeapAlloc.newStruct(new ComposedMessage());
    ThreadLocalRandom random = ThreadLocalRandom.current();
    // could directly send raw on publisher
    RateMeasure measure = new RateMeasure("msg/s");
    int count = 0;
    FSTStruct msg = null;
    while (true) {
        measure.count();
        // fill in data
        switch(random.nextInt(3)) {
            case 0:
                for (int i = 0; i < aMsg.stringArrayLen(); i++) {
                    aMsg.stringArray(i).setString("Hello " + i);
                }
                aMsg.setL(count++);
                msg = aMsg;
                break;
            case 1:
                other.setQuantity(count++);
                other.setValue(random.nextDouble());
                msg = other;
                break;
            case 2:
                aMsg.stringArray(0).setString("Hello !");
                aMsg.stringArray(1).setString("Hello !!");
                aMsg.setL(count++);
                other.setQuantity(count++);
                other.setValue(random.nextDouble());
                // does a copy !
                composed.setMegA(aMsg);
                // does a copy !
                composed.setMsgB(other);
                msg = composed;
                break;
        }
        // send message
        while (!pub.offer(null, msg.getBase(), msg.getOffset(), msg.getByteSize(), false)) {
        /* spin */
        }
    }
}

Example 2 with PublisherConf

use of org.nustaq.fastcast.config.PublisherConf in project fast-cast by RuedigerMoeller.

the class StructPublisher method main.

public static void main(String[] arg) {
    // 5 chars MAX !!
    FastCast.getFastCast().setNodeId("PUB");
    configureFastCast();
    FCPublisher pub = FastCast.getFastCast().onTransport("default").publish(// unique-per-transport topic id
    new PublisherConf(1).numPacketHistory(// how many packets are kept for retransmission requests
    33_000).pps(// packets per second rate limit.
    10_000));
    Protocol.initStructFactory();
    Protocol.PriceUpdateStruct template = new Protocol.PriceUpdateStruct();
    FSTStructAllocator onHeapAlloc = new FSTStructAllocator(0);
    // speed up instantiation
    Protocol.PriceUpdateStruct msg = onHeapAlloc.newStruct(template);
    ThreadLocalRandom current = ThreadLocalRandom.current();
    // could directly send raw on publisher
    RateMeasure measure = new RateMeasure("msg/s");
    while (true) {
        measure.count();
        // fill in data
        Protocol.InstrumentStruct instrument = msg.getInstrument();
        instrument.getMnemonic().setString("BMW");
        instrument.setInstrumentId(13);
        msg.setPrc(99.0 + current.nextDouble(10.0) - 5);
        msg.setQty(100 + current.nextInt(10));
        // send message
        while (!pub.offer(null, msg.getBase(), msg.getOffset(), msg.getByteSize(), false)) {
        /* spin */
        }
    }
}

Example 3 with PublisherConf

use of org.nustaq.fastcast.config.PublisherConf in project fast-cast by RuedigerMoeller.

the class ProgrammaticConfiguredPublisher method main.

public static void main(String[] arg) {
    // 5 chars MAX !!
    FastCast.getFastCast().setNodeId("PUB");
    configureFastCast();
    FCPublisher pub = FastCast.getFastCast().onTransport("default").publish(// unique-per-transport topic id
    new PublisherConf(1).numPacketHistory(// how long packets are kept for retransmission requests
    40_000).pps(// packets per second rate limit. So max traffic for topic = 5000*2500 = 12.5 MB/second
    5000));
    // could directly send raw on publisher
    // while( ! pub.offer(..) ) { /* spin */ }
    // or use a helper for fast-serialized messages
    ObjectPublisher opub = new ObjectPublisher(pub);
    RateMeasure measure = new RateMeasure("msg/s");
    while (true) {
        measure.count();
        opub.sendObject(// all listeners should receive (by specifying a nodeId, a specific subscriber can be targeted)
        null, // serializable object
        "Hello " + System.currentTimeMillis(), // allow for 'batching' several messages into one (will create slight latency)
        false);
    }
}