@Test
public void testFailoverGood() throws Exception {
AbstractClientConnectionFactory factory1 = mock(AbstractClientConnectionFactory.class);
AbstractClientConnectionFactory factory2 = mock(AbstractClientConnectionFactory.class);
List<AbstractClientConnectionFactory> factories =
new ArrayList<AbstractClientConnectionFactory>();
factories.add(factory1);
factories.add(factory2);
TcpConnectionSupport conn1 = makeMockConnection();
TcpConnectionSupport conn2 = makeMockConnection();
when(factory1.getConnection()).thenReturn(conn1);
when(factory2.getConnection()).thenReturn(conn2);
when(factory1.isActive()).thenReturn(true);
when(factory2.isActive()).thenReturn(true);
doThrow(new IOException("fail")).when(conn1).send(Mockito.any(Message.class));
doAnswer(
new Answer<Object>() {
public Object answer(InvocationOnMock invocation) throws Throwable {
return null;
}
})
.when(conn2)
.send(Mockito.any(Message.class));
FailoverClientConnectionFactory failoverFactory =
new FailoverClientConnectionFactory(factories);
failoverFactory.start();
GenericMessage<String> message = new GenericMessage<String>("foo");
failoverFactory.getConnection().send(message);
Mockito.verify(conn2).send(message);
}
@Test(expected = IOException.class)
public void testFailoverConnectNone() throws Exception {
AbstractClientConnectionFactory factory1 = mock(AbstractClientConnectionFactory.class);
AbstractClientConnectionFactory factory2 = mock(AbstractClientConnectionFactory.class);
List<AbstractClientConnectionFactory> factories =
new ArrayList<AbstractClientConnectionFactory>();
factories.add(factory1);
factories.add(factory2);
when(factory1.getConnection()).thenThrow(new IOException("fail"));
when(factory2.getConnection()).thenThrow(new IOException("fail"));
when(factory1.isActive()).thenReturn(true);
when(factory2.isActive()).thenReturn(true);
FailoverClientConnectionFactory failoverFactory =
new FailoverClientConnectionFactory(factories);
failoverFactory.start();
GenericMessage<String> message = new GenericMessage<String>("foo");
failoverFactory.getConnection().send(message);
}
@Test
public void testOkAgainAfterCompleteFailure() throws Exception {
AbstractClientConnectionFactory factory1 = mock(AbstractClientConnectionFactory.class);
AbstractClientConnectionFactory factory2 = mock(AbstractClientConnectionFactory.class);
List<AbstractClientConnectionFactory> factories =
new ArrayList<AbstractClientConnectionFactory>();
factories.add(factory1);
factories.add(factory2);
TcpConnectionSupport conn1 = makeMockConnection();
TcpConnectionSupport conn2 = makeMockConnection();
when(factory1.getConnection()).thenReturn(conn1);
when(factory2.getConnection()).thenReturn(conn2);
when(factory1.isActive()).thenReturn(true);
when(factory2.isActive()).thenReturn(true);
final AtomicInteger failCount = new AtomicInteger();
doAnswer(
new Answer<Object>() {
@Override
public Object answer(InvocationOnMock invocation) throws Throwable {
if (failCount.incrementAndGet() < 3) {
throw new IOException("fail");
}
return null;
}
})
.when(conn1)
.send(Mockito.any(Message.class));
doThrow(new IOException("fail")).when(conn2).send(Mockito.any(Message.class));
FailoverClientConnectionFactory failoverFactory =
new FailoverClientConnectionFactory(factories);
failoverFactory.start();
GenericMessage<String> message = new GenericMessage<String>("foo");
try {
failoverFactory.getConnection().send(message);
fail("ExpectedFailure");
} catch (IOException e) {
}
failoverFactory.getConnection().send(message);
Mockito.verify(conn2).send(message);
Mockito.verify(conn1, times(3)).send(message);
}
@Test(expected = IOException.class)
public void testFailoverAllDead() throws Exception {
AbstractClientConnectionFactory factory1 = mock(AbstractClientConnectionFactory.class);
AbstractClientConnectionFactory factory2 = mock(AbstractClientConnectionFactory.class);
List<AbstractClientConnectionFactory> factories =
new ArrayList<AbstractClientConnectionFactory>();
factories.add(factory1);
factories.add(factory2);
TcpConnectionSupport conn1 = makeMockConnection();
TcpConnectionSupport conn2 = makeMockConnection();
when(factory1.getConnection()).thenReturn(conn1);
when(factory2.getConnection()).thenReturn(conn2);
when(factory1.isActive()).thenReturn(true);
when(factory2.isActive()).thenReturn(true);
doThrow(new IOException("fail")).when(conn1).send(Mockito.any(Message.class));
doThrow(new IOException("fail")).when(conn2).send(Mockito.any(Message.class));
FailoverClientConnectionFactory failoverFactory =
new FailoverClientConnectionFactory(factories);
failoverFactory.start();
GenericMessage<String> message = new GenericMessage<String>("foo");
failoverFactory.getConnection().send(message);
Mockito.verify(conn2).send(message);
}
@Test
public void testFailoverAllDeadButOriginalOkAgain() throws Exception {
AbstractClientConnectionFactory factory1 = mock(AbstractClientConnectionFactory.class);
AbstractClientConnectionFactory factory2 = mock(AbstractClientConnectionFactory.class);
List<AbstractClientConnectionFactory> factories =
new ArrayList<AbstractClientConnectionFactory>();
factories.add(factory1);
factories.add(factory2);
TcpConnectionSupport conn1 = makeMockConnection();
TcpConnectionSupport conn2 = makeMockConnection();
when(factory1.getConnection()).thenReturn(conn1);
when(factory2.getConnection()).thenReturn(conn2);
when(factory1.isActive()).thenReturn(true);
when(factory2.isActive()).thenReturn(true);
final AtomicBoolean failedOnce = new AtomicBoolean();
doAnswer(
new Answer<Object>() {
@Override
public Object answer(InvocationOnMock invocation) throws Throwable {
if (!failedOnce.get()) {
failedOnce.set(true);
throw new IOException("fail");
}
return null;
}
})
.when(conn1)
.send(Mockito.any(Message.class));
doThrow(new IOException("fail")).when(conn2).send(Mockito.any(Message.class));
FailoverClientConnectionFactory failoverFactory =
new FailoverClientConnectionFactory(factories);
failoverFactory.start();
GenericMessage<String> message = new GenericMessage<String>("foo");
failoverFactory.getConnection().send(message);
Mockito.verify(conn2).send(message);
Mockito.verify(conn1, times(2)).send(message);
}