Examples with WatchedEvent org.apache.zookeeper.WatchedEvent used on opensource projects

Example 16 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class ReconfigTest method createHandles.

public static ZooKeeper[] createHandles(QuorumUtil qu) throws IOException {
    // create an extra handle, so we can index the handles from 1 to qu.ALL
    // using the server id.
    ZooKeeper[] zkArr = new ZooKeeper[qu.ALL + 1];
    // not used.
    zkArr[0] = null;
    for (int i = 1; i <= qu.ALL; i++) {
        // server ids are 1, 2 and 3
        zkArr[i] = new ZooKeeper("127.0.0.1:" + qu.getPeer(i).peer.getClientPort(), ClientBase.CONNECTION_TIMEOUT, new Watcher() {

            public void process(WatchedEvent event) {
            }
        });
    }
    return zkArr;
}

Example 17 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class QuorumTest method testLeaderShutdown.

@Test
public void testLeaderShutdown() throws IOException, InterruptedException, KeeperException {
    ZooKeeper zk = new DisconnectableZooKeeper(qb.hostPort, ClientBase.CONNECTION_TIMEOUT, new Watcher() {

        public void process(WatchedEvent event) {
        }
    });
    zk.create("/blah", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    zk.create("/blah/blah", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    Leader leader = qb.s1.leader;
    if (leader == null)
        leader = qb.s2.leader;
    if (leader == null)
        leader = qb.s3.leader;
    if (leader == null)
        leader = qb.s4.leader;
    if (leader == null)
        leader = qb.s5.leader;
    Assert.assertNotNull(leader);
    for (int i = 0; i < 5000; i++) {
        zk.setData("/blah/blah", new byte[0], -1, new AsyncCallback.StatCallback() {

            public void processResult(int rc, String path, Object ctx, Stat stat) {
                counter++;
                if (rc != 0) {
                    errors++;
                }
            }
        }, null);
    }
    for (LearnerHandler f : leader.getForwardingFollowers()) {
        f.getSocket().shutdownInput();
    }
    for (int i = 0; i < 5000; i++) {
        zk.setData("/blah/blah", new byte[0], -1, new AsyncCallback.StatCallback() {

            public void processResult(int rc, String path, Object ctx, Stat stat) {
                counter++;
                if (rc != 0) {
                    errors++;
                }
            }
        }, null);
    }
    // check if all the followers are alive
    Assert.assertTrue(qb.s1.isAlive());
    Assert.assertTrue(qb.s2.isAlive());
    Assert.assertTrue(qb.s3.isAlive());
    Assert.assertTrue(qb.s4.isAlive());
    Assert.assertTrue(qb.s5.isAlive());
    zk.close();
}

Example 18 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class QuorumZxidSyncTest method testLateLogs.

/**
     * find out what happens when the latest state is in the snapshots not
     * the logs.
     */
@Test
public void testLateLogs() throws Exception {
    // crank up the epoch numbers
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    ZooKeeper zk = new ZooKeeper(qb.hostPort, 10000, new Watcher() {

        public void process(WatchedEvent event) {
        }
    });
    zk.create("/0", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    zk.close();
    qb.shutdownServers();
    qb.startServers();
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    qb.shutdownServers();
    qb.startServers();
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    zk = new ZooKeeper(qb.hostPort, 10000, new Watcher() {

        public void process(WatchedEvent event) {
        }
    });
    zk.create("/1", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    zk.close();
    qb.shutdownServers();
    qb.startServers();
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    qb.shutdownServers();
    deleteLogs(qb.s1dir);
    deleteLogs(qb.s2dir);
    deleteLogs(qb.s3dir);
    deleteLogs(qb.s4dir);
    deleteLogs(qb.s5dir);
    qb.startServers();
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    zk = new ZooKeeper(qb.hostPort, 10000, new Watcher() {

        public void process(WatchedEvent event) {
        }
    });
    zk.create("/2", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    zk.close();
    qb.shutdownServers();
    qb.startServers();
    ClientBase.waitForServerUp(qb.hostPort, 10000);
    zk = new ZooKeeper(qb.hostPort, 10000, new Watcher() {

        public void process(WatchedEvent event) {
        }
    });
    boolean saw2 = false;
    for (String child : zk.getChildren("/", false)) {
        if (child.equals("2")) {
            saw2 = true;
        }
    }
    zk.close();
    Assert.assertTrue("Didn't see /2 (went back in time)", saw2);
}

Example 19 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class WatchedEventTest method testCreatingWatchedEvent.

@Test
public void testCreatingWatchedEvent() {
    // EventWatch is a simple, immutable type, so all we need to do
    // is make sure we can create all possible combinations of values.
    EnumSet<EventType> allTypes = EnumSet.allOf(EventType.class);
    EnumSet<KeeperState> allStates = EnumSet.allOf(KeeperState.class);
    WatchedEvent we;
    for (EventType et : allTypes) {
        for (KeeperState ks : allStates) {
            we = new WatchedEvent(et, ks, "blah");
            Assert.assertEquals(et, we.getType());
            Assert.assertEquals(ks, we.getState());
            Assert.assertEquals("blah", we.getPath());
        }
    }
}

Example 20 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class WatchedEventTest method testCreatingWatchedEventFromInvalidWrapper.

@Test
public void testCreatingWatchedEventFromInvalidWrapper() {
    try {
        WatcherEvent wep = new WatcherEvent(-2342, -252352, "foo");
        new WatchedEvent(wep);
        Assert.fail("Was able to create WatchedEvent from bad wrapper");
    } catch (RuntimeException re) {
    // we're good
    }
}