import org.zeromq.ZContext;
import org.zeromq.ZMQ;
import org.zeromq.ZMQ.Poller;
import org.zeromq.ZMQ.Socket;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
/**
* Clone client Model Five
*
*/
public class clonecli5
{
// This client is identical to clonecli3 except for where we
// handles subtrees.
private final static String SUBTREE = "/client/";
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());
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)
break; // Interrupted
sequence = kvMsg.getSequence();
if ("KTHXBAI".equalsIgnoreCase(kvMsg.getKey())) {
System.out.println("Received snapshot = " + kvMsg.getSequence());
kvMsg.destroy();
break; // done
}
kvMsg.dump();
System.out.println("receiving " + kvMsg.getSequence());
kvMsg.store(kvMap);
}
Poller poller = new Poller(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)
break; // Context has been shut down
if (poller.pollin(0)) {
kvmsg kvMsg = kvmsg.recv(subscriber);
if (kvMsg == null)
break; // Interrupted
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();
}
public static void main(String[] args) {
new clonecli5().run();
}
}