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Example 1 with NIOServerCnxn

use of org.apache.zookeeper.server.NIOServerCnxn in project zookeeper by apache.

the class WatchLeakTest method testWatchesLeak.

/**
 * Check that if session has expired then no watch can be set
 */
@Test
public void testWatchesLeak() throws Exception {
    NIOServerCnxnFactory serverCnxnFactory = mock(NIOServerCnxnFactory.class);
    final SelectionKey sk = new FakeSK();
    MockSelectorThread selectorThread = mock(MockSelectorThread.class);
    when(selectorThread.addInterestOpsUpdateRequest(any(SelectionKey.class))).thenAnswer(new Answer<Boolean>() {

        @Override
        public Boolean answer(InvocationOnMock invocation) throws Throwable {
            SelectionKey sk = (SelectionKey) invocation.getArguments()[0];
            NIOServerCnxn nioSrvCnx = (NIOServerCnxn) sk.attachment();
            sk.interestOps(nioSrvCnx.getInterestOps());
            return true;
        }
    });
    ZKDatabase database = new ZKDatabase(null);
    database.setlastProcessedZxid(2L);
    QuorumPeer quorumPeer = mock(QuorumPeer.class);
    FileTxnSnapLog logfactory = mock(FileTxnSnapLog.class);
    // Directories are not used but we need it to avoid NPE
    when(logfactory.getDataDir()).thenReturn(new File(""));
    when(logfactory.getSnapDir()).thenReturn(new File(""));
    FollowerZooKeeperServer fzks = null;
    try {
        // Create a new follower
        fzks = new FollowerZooKeeperServer(logfactory, quorumPeer, database);
        fzks.startup();
        fzks.setServerCnxnFactory(serverCnxnFactory);
        quorumPeer.follower = new MyFollower(quorumPeer, fzks);
        LOG.info("Follower created");
        // Simulate a socket channel between a client and a follower
        final SocketChannel socketChannel = createClientSocketChannel();
        // Create the NIOServerCnxn that will handle the client requests
        final MockNIOServerCnxn nioCnxn = new MockNIOServerCnxn(fzks, socketChannel, sk, serverCnxnFactory, selectorThread);
        sk.attach(nioCnxn);
        // Send the connection request as a client do
        nioCnxn.doIO(sk);
        LOG.info("Client connection sent");
        // Send the valid or invalid session packet to the follower
        QuorumPacket qp = createValidateSessionPacketResponse(!sessionTimedout);
        quorumPeer.follower.processPacket(qp);
        LOG.info("Session validation sent");
        // OK, now the follower knows that the session is valid or invalid, let's try
        // to send the watches
        nioCnxn.doIO(sk);
        // wait for the the request processor to do his job
        Thread.sleep(1000L);
        LOG.info("Watches processed");
        // If session has not been validated, there must be NO watches
        int watchCount = database.getDataTree().getWatchCount();
        if (sessionTimedout) {
            // Session has not been re-validated !
            LOG.info("session is not valid, watches = {}", watchCount);
            assertEquals("Session is not valid so there should be no watches", 0, watchCount);
        } else {
            // Session has been re-validated
            LOG.info("session is valid, watches = {}", watchCount);
            assertEquals("Session is valid so the watch should be there", 1, watchCount);
        }
    } finally {
        if (fzks != null) {
            fzks.shutdown();
        }
    }
}
Also used : SelectionKey(java.nio.channels.SelectionKey) SocketChannel(java.nio.channels.SocketChannel) MockNIOServerCnxn(org.apache.zookeeper.server.MockNIOServerCnxn) NIOServerCnxn(org.apache.zookeeper.server.NIOServerCnxn) ZKDatabase(org.apache.zookeeper.server.ZKDatabase) FileTxnSnapLog(org.apache.zookeeper.server.persistence.FileTxnSnapLog) MockNIOServerCnxn(org.apache.zookeeper.server.MockNIOServerCnxn) InvocationOnMock(org.mockito.invocation.InvocationOnMock) MockSelectorThread(org.apache.zookeeper.server.MockSelectorThread) NIOServerCnxnFactory(org.apache.zookeeper.server.NIOServerCnxnFactory) File(java.io.File) Test(org.junit.Test)

Aggregations

File (java.io.File)1 SelectionKey (java.nio.channels.SelectionKey)1 SocketChannel (java.nio.channels.SocketChannel)1 MockNIOServerCnxn (org.apache.zookeeper.server.MockNIOServerCnxn)1 MockSelectorThread (org.apache.zookeeper.server.MockSelectorThread)1 NIOServerCnxn (org.apache.zookeeper.server.NIOServerCnxn)1 NIOServerCnxnFactory (org.apache.zookeeper.server.NIOServerCnxnFactory)1 ZKDatabase (org.apache.zookeeper.server.ZKDatabase)1 FileTxnSnapLog (org.apache.zookeeper.server.persistence.FileTxnSnapLog)1 Test (org.junit.Test)1 InvocationOnMock (org.mockito.invocation.InvocationOnMock)1