Examples with JChannel org.jgroups.JChannel used on opensource projects

Example 91 with JChannel

use of org.jgroups.JChannel in project JGroups by belaban.

the class ClusterSplitLockTest method testClusterSplitImpl.

/**
 * Performs a test where the specified downMember goes down when the member performed a lock operation on 50%
 * of the locks. The coordinator should unlock all locks that were locked by the member that goes down. If the
 * member that goes down is the coordinator the new channel coordinator should make sure the lock table is up-to-date.
 */
private void testClusterSplitImpl(final int downMember, Class<? extends Locking> locking_class) throws Exception {
    setUp(locking_class);
    CountDownLatch doneOnMemberThatWillGoDown = new CountDownLatch(1);
    final int numLocks = 10;
    final int halfway = numLocks / 2;
    List<Future<?>> futures = new ArrayList<>();
    /*
         * All members perform the specified number of lock() operations. The
         * 'downMember' disconnects half way
         */
    for (int i = 0; i < MEMBERS; i++) {
        final int mbrIdx = i;
        final AtomicInteger unlockCount = new AtomicInteger(0);
        for (int j = 0; j < numLocks; j++) {
            final int lockNr = j;
            if (mbrIdx == downMember) {
                if (lockNr == halfway) {
                    futures.add(execs[downMember].submit(() -> {
                        try {
                            doneOnMemberThatWillGoDown.await();
                            log("Disconnecting member %s", memberName(downMember));
                            disconnectAndDestroy(downMember);
                        } catch (Exception e) {
                            throw new RuntimeException(e);
                        }
                    }));
                }
                if (lockNr >= halfway) {
                    break;
                }
            }
            futures.add(execs[mbrIdx].submit(() -> {
                Lock lock = lockServices[mbrIdx].getLock("testlock" + lockNr);
                try {
                    if (!lock.tryLock(5, SECONDS)) {
                        if (mbrIdx == downMember) {
                            fail(String.format("Member %s failed to lock %s using tryLock in healthy situation.", memberName(mbrIdx), lockNr));
                        } else {
                            log("Failed to tryLock member:%s lock:%d LOCKS:\n%s", memberName(mbrIdx), lockNr, lockServices[mbrIdx].printLocks());
                            return;
                        }
                    } else {
                        log("Member %s locked %d (threadid: %d)", memberName(mbrIdx), lockNr, Thread.currentThread().getId());
                    }
                } catch (InterruptedException ie) {
                    log("InterruptedException member:%s, lock:%d", memberName(mbrIdx), lockNr, ie);
                    fail("Interrupted on tryLock " + memberName(mbrIdx) + " - " + lockNr);
                }
                try {
                    Thread.sleep(30);
                } catch (InterruptedException e) {
                    fail("Interrupted while sleeping.");
                } finally {
                    lock.unlock();
                    log("Unlocked lock %d by member %s (threadid: %d)", lockNr, memberName(mbrIdx), Thread.currentThread().getId());
                    if (mbrIdx == downMember && halfway == unlockCount.incrementAndGet()) {
                        log("setting doneOnMemberThatWillGoDown flag");
                        doneOnMemberThatWillGoDown.countDown();
                    }
                }
            }));
        }
    }
    /* wait for the chaos to disappear */
    for (Future<?> fut : futures) {
        fut.get();
    }
    StringBuilder locksOverview = new StringBuilder("\n==== first run done ====\n");
    for (int i = 0; i < MEMBERS; i++) {
        locksOverview.append(String.format("Locks on member %s:\n%s\n", memberName(i), lockServices[i].printLocks()));
    }
    locksOverview.append("\n========================");
    log(locksOverview.toString());
    /*
         * All locks should be unlocked at this point so no try lock request
         * should fail
         */
    Thread.sleep(2000);
    log("==== Checking if tryLock succeeds for all locks on all remaining members =====");
    for (int i = 0; i < MEMBERS; i++) {
        if (i == downMember) {
            continue;
        }
        for (int j = 0; j < numLocks; j++) {
            Lock l = lockServices[i].getLock("testlock" + j);
            if (!l.tryLock()) {
                logError("Failed to acquire lock on %d by member %s", j, memberName(i));
                Address coord = channels[i].getView().getCoord();
                int count = 0;
                for (JChannel c : channels) {
                    if (null != c.getAddress() && c.getAddress().equals(coord)) {
                        logError("Lock table for %s (coord):\n%s", coord, lockServices[count].printLocks());
                        break;
                    }
                    count++;
                }
                fail(String.format("Member %s can't lock:%d", memberName(i), j));
            }
            l.unlock();
        }
    }
}

Example 92 with JChannel

use of org.jgroups.JChannel in project JGroups by belaban.

the class ClusterSplitLockTest method setUp.

protected void setUp(Class<? extends Locking> locking_class) throws Exception {
    for (int i = 0; i < MEMBERS; i++) {
        Locking lock_prot = locking_class.getDeclaredConstructor().newInstance().level("debug");
        if (lock_prot instanceof CENTRAL_LOCK)
            ((CENTRAL_LOCK) lock_prot).setNumberOfBackups(2);
        Protocol[] stack = Util.getTestStack(lock_prot);
        channels[i] = new JChannel(stack);
        lockServices[i] = new LockService(channels[i]);
        channels[i].setName(memberName(i));
        channels[i].connect("TEST");
        execs[i] = Executors.newCachedThreadPool();
        if (i == 0)
            Util.sleep(500);
    }
    Util.waitUntilAllChannelsHaveSameView(10000, 1000, channels);
    // Make sure A is coordinator, because we blindly assume it is in the tests below.
    assertEquals(channels[0].getAddress(), channels[0].getView().getCoord());
}

Example 93 with JChannel

use of org.jgroups.JChannel in project JGroups by belaban.

the class ConnectStressTest method testConcurrentJoining.

public void testConcurrentJoining() throws Exception {
    for (int i = 0; i < NUM; i++) {
        threads[i] = new MyThread(channels[i], i + 1, barrier);
        threads[i].start();
    }
    // causes all threads to call Channel.connect()
    barrier.await();
    System.out.println("*** Starting the connect phase ***");
    long target_time = System.currentTimeMillis() + 60000L;
    while (System.currentTimeMillis() < target_time) {
        View view = channels[0].getView();
        if (view != null) {
            int size = view.size();
            System.out.println("channel[0].view has " + size + " members (expected: " + NUM + ")");
            if (size >= NUM)
                break;
        }
        Util.sleep(1000L);
    }
    for (JChannel ch : channels) {
        View view = ch.getView();
        if (view != null)
            System.out.println(ch.getName() + ": size=" + view.size() + ", view-id: " + view.getViewId());
    }
    for (JChannel ch : channels) {
        View view = ch.getView();
        int size = view != null ? view.size() : 0;
        assert view != null && size == NUM : "view doesn't have size of " + NUM + " (has " + size + "): " + view;
    }
}

Example 94 with JChannel

use of org.jgroups.JChannel in project JGroups by belaban.

the class BaseLeaveTest method testLeaveOfSecondHalfWithCoordLeaving.

/**
 * The second half of the cluster (6,7,8,9,10) sends LEAVE requests to 1, but 1 leaves before they get a response.
 * Requires them to resend their LEAVE requests to 2 on the view change when 2 takes over as coord.
 */
public void testLeaveOfSecondHalfWithCoordLeaving() throws Exception {
    setup(NUM);
    Stream.of(channels).forEach(ch -> ch.getProtocolStack().removeProtocols(FailureDetection.class, FD_SOCK.class));
    Comparator<GmsImpl.Request> comp = Comparator.comparingInt(GmsImpl.Request::getType).reversed();
    GMS gms = channels[0].getProtocolStack().findProtocol(GMS.class);
    ViewHandler vh = gms.getViewHandler();
    MyViewHandler my_vh = new MyViewHandler(gms, vh.reqProcessor(), GmsImpl.Request::canBeProcessedTogether, comp, 6).processing(true);
    setViewHandler(my_vh, gms);
    testConcurrentLeaves(0, 5, 6, 7, 8, 9);
    my_vh.processing(false);
    setViewHandler(vh, gms);
    assert Stream.of(0, 5, 6, 7, 8, 9).map(i -> channels[i]).allMatch(JChannel::isClosed);
    assert Stream.of(1, 2, 3, 4).map(i -> channels[i]).allMatch(JChannel::isConnected);
    assert Stream.of(1, 2, 3, 4).map(i -> channels[i]).allMatch(ch -> ch.getView().getCoord().equals(channels[1].getAddress()));
}

Example 95 with JChannel

use of org.jgroups.JChannel in project JGroups by belaban.

the class TCPPING_Test method testSettingInitialHostsProgrammatically.

/**
 * Tests https://issues.jboss.org/browse/JGRP-2168
 */
public void testSettingInitialHostsProgrammatically() throws Exception {
    TCP transport = new TCP();
    transport.setBindAddress(InetAddress.getLoopbackAddress());
    transport.setBindPort(9600);
    TCPPING ping = new TCPPING();
    TCPGOSSIP gossip = new TCPGOSSIP();
    List<InetSocketAddress> gossip_router = Collections.singletonList(new InetSocketAddress(InetAddress.getLoopbackAddress(), 12000));
    gossip.setInitialHosts(gossip_router);
    ping.setInitialHosts2(Collections.singletonList(new IpAddress(transport.getBindAddress(), transport.getBindPort())));
    ch = new JChannel(transport, ping, gossip);
    assert !ping.getInitialHosts().isEmpty() : "No initial hosts!";
    assert !gossip.getInitialHosts().isEmpty() : "no initial hosts!";
}