Examples with Slave org.neo4j.kernel.ha.com.master.Slave used on opensource projects

Example 6 with Slave

use of org.neo4j.kernel.ha.com.master.Slave in project neo4j by neo4j.

the class TestMasterCommittingAtSlave method roundRobinSomeFailing.

@Test
public void roundRobinSomeFailing() throws Exception {
    TransactionPropagator propagator = newPropagator(4, 2, roundRobin(), false, true);
    for (long tx = 2; tx <= 6; tx++) {
        propagator.committed(tx, MasterServerId);
    }
    /* SLAVE |    TX
        *   0   | 2     5 6
        * F 1   |
        *   2   | 2 3 4   6
        *   3   |   3 4 5
        */
    Iterator<Slave> slaveIt = slaves.iterator();
    assertCalls((FakeSlave) slaveIt.next(), 2, 5, 6);
    slaveIt.next();
    assertCalls((FakeSlave) slaveIt.next(), 2, 3, 4, 6);
    assertCalls((FakeSlave) slaveIt.next(), 3, 4, 5);
    logProvider.assertNone(communicationLogMessage);
}

Example 7 with Slave

use of org.neo4j.kernel.ha.com.master.Slave in project neo4j by neo4j.

the class SwitchToSlave method startHaCommunication.

private URI startHaCommunication(LifeSupport haCommunicationLife, NeoStoreDataSource neoDataSource, URI me, URI masterUri, StoreId storeId, CancellationRequest cancellationRequest) throws IllegalArgumentException, InterruptedException {
    MasterClient master = newMasterClient(masterUri, me, neoDataSource.getStoreId(), haCommunicationLife);
    TransactionObligationFulfiller obligationFulfiller = resolver.resolveDependency(TransactionObligationFulfiller.class);
    UpdatePullerScheduler updatePullerScheduler = updatePullerFactory.createUpdatePullerScheduler(updatePuller);
    Slave slaveImpl = new SlaveImpl(obligationFulfiller);
    SlaveServer server = slaveServerFactory.apply(slaveImpl);
    if (cancellationRequest.cancellationRequested()) {
        msgLog.info("Switch to slave cancelled, unable to start HA-communication");
        return null;
    }
    masterDelegateHandler.setDelegate(master);
    haCommunicationLife.add(updatePullerScheduler);
    haCommunicationLife.add(server);
    haCommunicationLife.start();
    /*
         * Take the opportunity to catch up with master, now that we're alone here, right before we
         * drop the availability guard, so that other transactions might start.
         */
    if (!catchUpWithMaster(updatePuller)) {
        return null;
    }
    URI slaveHaURI = createHaURI(me, server);
    clusterMemberAvailability.memberIsAvailable(HighAvailabilityModeSwitcher.SLAVE, slaveHaURI, storeId);
    return slaveHaURI;
}

Example 8 with Slave

use of org.neo4j.kernel.ha.com.master.Slave in project neo4j by neo4j.

the class TestMasterCommittingAtSlave method testFixedPriorityStrategy.

@Test
public void testFixedPriorityStrategy() {
    int[] serverIds = new int[] { 55, 101, 66 };
    SlavePriority fixed = SlavePriorities.fixedDescending();
    ArrayList<Slave> slaves = new ArrayList<>(3);
    slaves.add(new FakeSlave(false, serverIds[0]));
    slaves.add(new FakeSlave(false, serverIds[1]));
    slaves.add(new FakeSlave(false, serverIds[2]));
    Iterator<Slave> sortedSlaves = fixed.prioritize(slaves).iterator();
    assertEquals(serverIds[1], sortedSlaves.next().getServerId());
    assertEquals(serverIds[2], sortedSlaves.next().getServerId());
    assertEquals(serverIds[0], sortedSlaves.next().getServerId());
    assertTrue(!sortedSlaves.hasNext());
}

Example 9 with Slave

use of org.neo4j.kernel.ha.com.master.Slave in project neo4j by neo4j.

the class TestMasterCommittingAtSlave method commitSuccessfullyAtThreeSlaves.

@Test
public void commitSuccessfullyAtThreeSlaves() throws Exception {
    TransactionPropagator propagator = newPropagator(5, 3, givenOrder());
    propagator.committed(2, MasterServerId);
    propagator.committed(3, 1);
    propagator.committed(4, 2);
    Iterator<Slave> slaveIt = slaves.iterator();
    assertCalls((FakeSlave) slaveIt.next(), 2, 4);
    assertCalls((FakeSlave) slaveIt.next(), 2, 3);
    assertCalls((FakeSlave) slaveIt.next(), 2, 3, 4);
    assertCalls((FakeSlave) slaveIt.next());
    assertCalls((FakeSlave) slaveIt.next());
    logProvider.assertNone(communicationLogMessage);
}

Example 10 with Slave

use of org.neo4j.kernel.ha.com.master.Slave in project neo4j by neo4j.

the class TestMasterCommittingAtSlave method notEnoughSlavesSuccessful.

@Test
public void notEnoughSlavesSuccessful() throws Exception {
    TransactionPropagator propagator = newPropagator(3, 2, givenOrder(), true, true);
    propagator.committed(2, MasterServerId);
    Iterator<Slave> slaveIt = slaves.iterator();
    slaveIt.next();
    slaveIt.next();
    assertCalls((FakeSlave) slaveIt.next(), 2);
    logProvider.assertNone(communicationLogMessage);
}