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

Example 76 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 where 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.
 *
 * @param downMember
 * @throws Exception
 */
private void testClusterSplitImpl(final int downMember) throws Exception {
    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 77 with JChannel

use of org.jgroups.JChannel in project activemq-artemis by apache.

the class JGroupsBroadcastTest method testRefCount.

@Test
public void testRefCount() throws Exception {
    JChannel channel = null;
    JChannel newChannel = null;
    try {
        PlainConfigurator configurator = new PlainConfigurator(jgroupsConfigString);
        channel = new JChannel(configurator);
        String channelName1 = "channel1";
        BroadcastEndpointFactory jgroupsBroadcastCfg1 = new ChannelBroadcastEndpointFactory(channel, channelName1);
        BroadcastEndpoint channelEndpoint1 = jgroupsBroadcastCfg1.createBroadcastEndpoint();
        BroadcastEndpoint channelEndpoint2 = jgroupsBroadcastCfg1.createBroadcastEndpoint();
        BroadcastEndpoint channelEndpoint3 = jgroupsBroadcastCfg1.createBroadcastEndpoint();
        channelEndpoint1.close(true);
        Assert.assertTrue(channel.isOpen());
        channelEndpoint2.close(true);
        Assert.assertTrue(channel.isOpen());
        channelEndpoint3.close(true);
        Assert.assertTrue(channel.isOpen());
        channel.close();
        // channel wrapper is recreated
        try {
            channelEndpoint2.openClient();
            Assert.fail("this should be closed");
        } catch (Exception e) {
        }
        newChannel = new JChannel(configurator);
        jgroupsBroadcastCfg1 = new ChannelBroadcastEndpointFactory(newChannel, channelName1);
        channelEndpoint1 = jgroupsBroadcastCfg1.createBroadcastEndpoint();
        channelEndpoint1.openClient();
    } catch (Exception e) {
        e.printStackTrace();
        throw e;
    } finally {
        try {
            channel.close();
        } catch (Throwable ignored) {
        }
        try {
            newChannel.close();
        } catch (Throwable ignored) {
        }
    }
}

Example 78 with JChannel

use of org.jgroups.JChannel in project activemq-artemis by apache.

the class ConnectionFactoryWithJGroupsSerializationTest method setUp.

@Override
@Before
public void setUp() throws Exception {
    try {
        super.setUp();
        PlainConfigurator configurator = new PlainConfigurator(jgroupsConfigString);
        channel = new JChannel(configurator);
        String channelName1 = "channel1";
        String channelName2 = "channel2";
        BroadcastEndpointFactory jgroupsBroadcastCfg1 = new ChannelBroadcastEndpointFactory(channel, channelName1);
        BroadcastEndpointFactory jgroupsBroadcastCfg2 = new JGroupsFileBroadcastEndpointFactory().setChannelName(channelName2).setFile(jgroupsConfigString);
        DiscoveryGroupConfiguration dcConfig1 = new DiscoveryGroupConfiguration().setName("dg1").setRefreshTimeout(5000).setDiscoveryInitialWaitTimeout(5000).setBroadcastEndpointFactory(jgroupsBroadcastCfg1);
        DiscoveryGroupConfiguration dcConfig2 = new DiscoveryGroupConfiguration().setName("dg2").setRefreshTimeout(5000).setDiscoveryInitialWaitTimeout(5000).setBroadcastEndpointFactory(jgroupsBroadcastCfg2);
        jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().put(dcConfig1.getName(), dcConfig1);
        jmsServer.getActiveMQServer().getConfiguration().getDiscoveryGroupConfigurations().put(dcConfig2.getName(), dcConfig2);
        jmsServer.createConnectionFactory("ConnectionFactory1", false, JMSFactoryType.CF, dcConfig1.getName(), "/ConnectionFactory1");
        jmsServer.createConnectionFactory("ConnectionFactory2", false, JMSFactoryType.CF, dcConfig2.getName(), "/ConnectionFactory2");
        testQueue = createQueue("testQueueFor1389");
    } catch (Exception e) {
        e.printStackTrace();
        throw e;
    }
}

Example 79 with JChannel

use of org.jgroups.JChannel in project xwiki-platform by xwiki.

the class JGroupsNetworkAdapter method send.

@Override
public void send(RemoteEventData remoteEvent) {
    this.logger.debug("Send JGroups remote event [" + remoteEvent + "]");
    // Send the message to the whole group
    Message message = new Message(null, remoteEvent);
    // Send message to JGroups channels
    for (Map.Entry<String, JChannel> entry : this.channels.entrySet()) {
        try {
            entry.getValue().send(message);
        } catch (Exception e) {
            this.logger.error("Failed to send message [" + remoteEvent + "] to the channel [" + entry.getKey() + "]", e);
        }
    }
}

Example 80 with JChannel

use of org.jgroups.JChannel in project xwiki-platform by xwiki.

the class JGroupsNetworkAdapter method createChannel.

/**
 * Create a new channel.
 *
 * @param channelId the identifier of the channel to create
 * @return the new channel
 * @throws Exception failed to create new channel
 */
private JChannel createChannel(String channelId) throws Exception {
    // load configuration
    ProtocolStackConfigurator channelConf = loadChannelConfiguration(channelId);
    // get Receiver
    JGroupsReceiver channelReceiver;
    try {
        channelReceiver = this.componentManager.getInstance(JGroupsReceiver.class, channelId);
    } catch (ComponentLookupException e) {
        channelReceiver = this.componentManager.getInstance(JGroupsReceiver.class);
    }
    // create channel
    JChannel channel = new JChannel(channelConf);
    channel.setReceiver(channelReceiver);
    channel.setDiscardOwnMessages(true);
    return channel;
}