Examples with InstanceId org.neo4j.cluster.InstanceId used on opensource projects

Example 16 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HighAvailabilityMemberStateMachineTest method whenInSlaveStateWith2MemberClusterLosingMasterShouldPutInPending.

@Test
public void whenInSlaveStateWith2MemberClusterLosingMasterShouldPutInPending() throws Throwable {
    // Given
    InstanceId me = new InstanceId(1);
    InstanceId master = new InstanceId(2);
    HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, false);
    AvailabilityGuard guard = mock(AvailabilityGuard.class);
    ObservedClusterMembers members = mockClusterMembers(me, emptyList(), singletonList(master));
    ClusterMemberEvents events = mock(ClusterMemberEvents.class);
    ClusterMemberListenerContainer memberListenerContainer = mockAddClusterMemberListener(events);
    HighAvailabilityMemberStateMachine stateMachine = buildMockedStateMachine(context, events, members, guard);
    stateMachine.init();
    ClusterMemberListener memberListener = memberListenerContainer.get();
    HAStateChangeListener probe = new HAStateChangeListener();
    stateMachine.addHighAvailabilityMemberListener(probe);
    // Send it to MASTER
    memberListener.coordinatorIsElected(master);
    memberListener.memberIsAvailable(MASTER, master, URI.create("ha://whatever"), StoreId.DEFAULT);
    memberListener.memberIsAvailable(SLAVE, me, URI.create("ha://whatever3"), StoreId.DEFAULT);
    assertThat(stateMachine.getCurrentState(), equalTo(HighAvailabilityMemberState.SLAVE));
    // When
    memberListener.memberIsFailed(master);
    // Then
    assertThat(stateMachine.getCurrentState(), equalTo(HighAvailabilityMemberState.PENDING));
    assertThat(probe.instanceStops, is(false));
    assertThat(probe.instanceDetached, is(true));
    verify(guard, times(1)).require(any(AvailabilityRequirement.class));
}

Example 17 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HighAvailabilityMemberStateMachineTest method whenSlaveOnlyIsElectedStayInPending.

@Test
public void whenSlaveOnlyIsElectedStayInPending() throws Throwable {
    // Given
    InstanceId me = new InstanceId(1);
    HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, true);
    ClusterMemberEvents events = mock(ClusterMemberEvents.class);
    ClusterMemberListenerContainer memberListenerContainer = mockAddClusterMemberListener(events);
    HighAvailabilityMemberStateMachine stateMachine = buildMockedStateMachine(context, events);
    stateMachine.init();
    ClusterMemberListener memberListener = memberListenerContainer.get();
    // When
    memberListener.coordinatorIsElected(me);
    // Then
    assertThat(stateMachine.getCurrentState(), equalTo(HighAvailabilityMemberState.PENDING));
}

Example 18 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HighAvailabilityMemberStateMachineTest method whenInToSlaveStateLosingQuorumShouldPutInPending.

@Test
public void whenInToSlaveStateLosingQuorumShouldPutInPending() throws Throwable {
    // Given
    InstanceId me = new InstanceId(1);
    InstanceId other = new InstanceId(2);
    HighAvailabilityMemberContext context = new SimpleHighAvailabilityMemberContext(me, false);
    AvailabilityGuard guard = mock(AvailabilityGuard.class);
    ObservedClusterMembers members = mockClusterMembers(me, emptyList(), singletonList(other));
    ClusterMemberEvents events = mock(ClusterMemberEvents.class);
    ClusterMemberListenerContainer memberListenerContainer = mockAddClusterMemberListener(events);
    HighAvailabilityMemberStateMachine stateMachine = buildMockedStateMachine(context, events, members, guard);
    stateMachine.init();
    ClusterMemberListener memberListener = memberListenerContainer.get();
    HAStateChangeListener probe = new HAStateChangeListener();
    stateMachine.addHighAvailabilityMemberListener(probe);
    // Send it to MASTER
    memberListener.memberIsAvailable(MASTER, other, URI.create("ha://whatever"), StoreId.DEFAULT);
    assertThat(stateMachine.getCurrentState(), equalTo(HighAvailabilityMemberState.TO_SLAVE));
    // When
    memberListener.memberIsFailed(new InstanceId(2));
    // Then
    assertThat(stateMachine.getCurrentState(), equalTo(HighAvailabilityMemberState.PENDING));
    assertThat(probe.instanceStops, is(false));
    assertThat(probe.instanceDetached, is(true));
    verify(guard, times(1)).require(any(AvailabilityRequirement.class));
}

Example 19 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HighAvailabilityMemberStateTest method setup.

@Before
public void setup() {
    myId = new InstanceId(1);
    context = mock(HighAvailabilityMemberContext.class);
    when(context.getMyId()).thenReturn(myId);
}

Example 20 with InstanceId

use of org.neo4j.cluster.InstanceId in project neo4j by neo4j.

the class HighAvailabilityMemberStateTest method testToMasterSlaveIsAvailable.

@Test
public void testToMasterSlaveIsAvailable() {
    // CASE 1: Got SlaveIsAvailable for me - not ok, i'm currently switching to master
    HighAvailabilityMemberState illegal = TO_MASTER.slaveIsAvailable(context, myId, SampleUri);
    assertEquals(ILLEGAL, illegal);
    // CASE 2: Got SlaveIsAvailable for someone else - don't really care
    HighAvailabilityMemberState newState = TO_MASTER.slaveIsAvailable(context, new InstanceId(2), SampleUri);
    assertEquals(TO_MASTER, newState);
}