protected Map<String, Channel> initChannel(
Connection connection, int assignedNum, String queueName) throws IOException {
Channel consumerChannel = connection.createChannel();
Channel publisherChannel = connection.createChannel();
Map<String, Channel> result = new HashMap<String, Channel>();
if (consumerChannel != null && !consumerChannel.isOpen()) {
consumerChannel = connection.createChannel();
}
if (publisherChannel != null && !publisherChannel.isOpen()) {
publisherChannel = connection.createChannel();
}
DecimalFormat formatter = new DecimalFormat("#00.###");
String queueRoutingKey = CONSUMER_ROUTING_KEY + formatter.format(assignedNum);
consumerChannel.queueDeclare(queueName, false, false, true, null);
consumerChannel.exchangeDeclare(CONSUMER_EXCHANGE_NAME, CONSUMER_EXCHANGE_TYPE, false);
consumerChannel.queueBind(queueName, CONSUMER_EXCHANGE_NAME, queueRoutingKey);
consumerChannel.basicQos(1);
publisherChannel.exchangeDeclare(PUBLISHER_EXCHANGE_NAME, PUBLISHER_EXCHANGE_TYPE, false);
result.put("consumer", consumerChannel);
result.put("publisher", publisherChannel);
return result;
}
public void testChannelRecovery() throws IOException, InterruptedException {
Channel ch1 = connection.createChannel();
Channel ch2 = connection.createChannel();
assertTrue(ch1.isOpen());
assertTrue(ch2.isOpen());
closeAndWaitForRecovery();
expectChannelRecovery(ch1);
expectChannelRecovery(ch2);
}
/** - */
@Test
public void test() throws Exception {
ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
Connection mockConnection = mock(Connection.class);
Channel mockChannel = mock(Channel.class);
when(mockConnectionFactory.newConnection((ExecutorService) null)).thenReturn(mockConnection);
when(mockConnection.isOpen()).thenReturn(true);
when(mockConnection.createChannel()).thenReturn(mockChannel);
when(mockChannel.isOpen()).thenReturn(true);
Message msg =
this.messageConverter.toMessage(
createFieldChangedEvent(
"/asset/assetMeter/crank-frame-dischargepressure", //$NON-NLS-1$
"/asset/assetMeter/crank-frame-dischargepressure", //$NON-NLS-1$
"/asset/compressor-2015", //$NON-NLS-1$
StringUtil.parseDate("2012-09-11T07:16:13"), // $NON-NLS-1$
null,
null),
null);
final RabbitTemplate fieldChangedEventTemplate =
new RabbitTemplate(new CachingConnectionFactory(mockConnectionFactory));
fieldChangedEventTemplate.convertAndSend("fieldchangedeventMainQ", msg); // $NON-NLS-1$
}
public void stop() throws IOException {
if (channel != null && channel.isOpen()) {
channel.close();
}
if (connection != null && connection.isOpen()) {
connection.close();
}
}
// AMQP-506 ConcurrentModificationException
@Test
public void testPublisherConfirmGetUnconfirmedConcurrency() throws Exception {
ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
Connection mockConnection = mock(Connection.class);
Channel mockChannel = mock(Channel.class);
when(mockChannel.isOpen()).thenReturn(true);
final AtomicLong seq = new AtomicLong();
doAnswer(
new Answer<Long>() {
@Override
public Long answer(InvocationOnMock invocation) throws Throwable {
return seq.incrementAndGet();
}
})
.when(mockChannel)
.getNextPublishSeqNo();
when(mockConnectionFactory.newConnection((ExecutorService) null)).thenReturn(mockConnection);
when(mockConnection.isOpen()).thenReturn(true);
doReturn(mockChannel).when(mockConnection).createChannel();
CachingConnectionFactory ccf = new CachingConnectionFactory(mockConnectionFactory);
ccf.setPublisherConfirms(true);
final RabbitTemplate template = new RabbitTemplate(ccf);
final AtomicBoolean confirmed = new AtomicBoolean();
template.setConfirmCallback(
new ConfirmCallback() {
@Override
public void confirm(CorrelationData correlationData, boolean ack, String cause) {
confirmed.set(true);
}
});
ExecutorService exec = Executors.newSingleThreadExecutor();
final AtomicBoolean sentAll = new AtomicBoolean();
exec.execute(
new Runnable() {
@Override
public void run() {
for (int i = 0; i < 10000; i++) {
template.convertAndSend(ROUTE, (Object) "message", new CorrelationData("abc"));
}
sentAll.set(true);
}
});
Collection<CorrelationData> unconfirmed = template.getUnconfirmed(-1);
long t1 = System.currentTimeMillis();
while (!sentAll.get() && System.currentTimeMillis() < t1 + 20000) {
unconfirmed = template.getUnconfirmed(-1);
}
assertTrue(sentAll.get());
assertFalse(confirmed.get());
}
@Override
protected void stopImpl() throws IOException {
// ! As with closing the connection, closing an already
// closed channel is considered success.
if (channel != null && channel.isOpen()) {
try {
channel.close();
} catch (AlreadyClosedException ignored) {
}
}
}
public void start() throws IOException {
if (channel == null || !channel.isOpen()) {
channel = config.createChannel();
channel.addShutdownListener(this);
channel.basicQos(getPrefetchCount());
config.declareBrokerConfiguration(channel);
consumer = new QueueSubscriber<BasicConsumer<C, T>>(channel, this);
channel.basicConsume(queueName, false, consumer);
}
}
public void close() {
try {
if (channel != null && channel.isOpen()) {
if (consumerTag != null) channel.basicCancel(consumerTag);
channel.close();
}
} catch (Exception e) {
logger.debug("error closing channel and/or cancelling consumer", e);
}
try {
logger.info("closing connection to rabbitmq: " + connection);
connection.close();
} catch (Exception e) {
logger.debug("error closing connection", e);
}
consumer = null;
consumerTag = null;
channel = null;
connection = null;
}
@Test
public void testPublisherConfirmNotReceivedMultiThreads() throws Exception {
ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
Connection mockConnection = mock(Connection.class);
Channel mockChannel1 = mock(Channel.class);
Channel mockChannel2 = mock(Channel.class);
when(mockChannel1.isOpen()).thenReturn(true);
when(mockChannel2.isOpen()).thenReturn(true);
when(mockChannel1.getNextPublishSeqNo()).thenReturn(1L, 2L, 3L, 4L);
when(mockChannel2.getNextPublishSeqNo()).thenReturn(1L, 2L, 3L, 4L);
when(mockConnectionFactory.newConnection((ExecutorService) null)).thenReturn(mockConnection);
when(mockConnection.isOpen()).thenReturn(true);
PublisherCallbackChannelImpl channel1 = new PublisherCallbackChannelImpl(mockChannel1);
PublisherCallbackChannelImpl channel2 = new PublisherCallbackChannelImpl(mockChannel2);
when(mockConnection.createChannel()).thenReturn(channel1).thenReturn(channel2);
CachingConnectionFactory ccf = new CachingConnectionFactory(mockConnectionFactory);
ccf.setPublisherConfirms(true);
ccf.setChannelCacheSize(3);
final RabbitTemplate template = new RabbitTemplate(ccf);
final AtomicBoolean confirmed = new AtomicBoolean();
template.setConfirmCallback(
new ConfirmCallback() {
@Override
public void confirm(CorrelationData correlationData, boolean ack, String cause) {
confirmed.set(true);
}
});
// Hold up the first thread so we get two channels
final CountDownLatch threadLatch = new CountDownLatch(1);
final CountDownLatch threadSentLatch = new CountDownLatch(1);
// Thread 1
ExecutorService exec = Executors.newSingleThreadExecutor();
exec.execute(
new Runnable() {
@Override
public void run() {
template.execute(
new ChannelCallback<Object>() {
@Override
public Object doInRabbit(Channel channel) throws Exception {
try {
threadLatch.await(10, TimeUnit.SECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
template.doSend(
channel,
"",
ROUTE,
new SimpleMessageConverter().toMessage("message", new MessageProperties()),
false,
new CorrelationData("def"));
threadSentLatch.countDown();
return null;
}
});
}
});
// Thread 2
template.convertAndSend(ROUTE, (Object) "message", new CorrelationData("abc")); // channel y
threadLatch.countDown();
assertTrue(threadSentLatch.await(5, TimeUnit.SECONDS));
Collection<CorrelationData> unconfirmed = template.getUnconfirmed(-1);
assertEquals(2, unconfirmed.size());
Set<String> ids = new HashSet<String>();
Iterator<CorrelationData> iterator = unconfirmed.iterator();
ids.add(iterator.next().getId());
ids.add(iterator.next().getId());
assertTrue(ids.remove("abc"));
assertTrue(ids.remove("def"));
assertFalse(confirmed.get());
DirectFieldAccessor dfa = new DirectFieldAccessor(template);
Map<?, ?> pendingConfirms = (Map<?, ?>) dfa.getPropertyValue("pendingConfirms");
assertThat(pendingConfirms.size(), greaterThan(0)); // might use 2 or only 1 channel
exec.shutdown();
assertTrue(exec.awaitTermination(10, TimeUnit.SECONDS));
ccf.destroy();
assertEquals(0, pendingConfirms.size());
}
/** Verifies that an up-stack RabbitTemplate uses the listener's channel (MessageListener). */
@SuppressWarnings("unchecked")
@Test
public void testMessageListener() throws Exception {
ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
Connection mockConnection = mock(Connection.class);
final Channel onlyChannel = mock(Channel.class);
when(onlyChannel.isOpen()).thenReturn(true);
final CachingConnectionFactory cachingConnectionFactory =
new CachingConnectionFactory(mockConnectionFactory);
when(mockConnectionFactory.newConnection((ExecutorService) null)).thenReturn(mockConnection);
when(mockConnection.isOpen()).thenReturn(true);
final AtomicReference<Exception> tooManyChannels = new AtomicReference<Exception>();
doAnswer(
new Answer<Channel>() {
boolean done;
@Override
public Channel answer(InvocationOnMock invocation) throws Throwable {
if (!done) {
done = true;
return onlyChannel;
}
tooManyChannels.set(new Exception("More than one channel requested"));
Channel channel = mock(Channel.class);
when(channel.isOpen()).thenReturn(true);
return channel;
}
})
.when(mockConnection)
.createChannel();
final AtomicReference<Consumer> consumer = new AtomicReference<Consumer>();
doAnswer(
new Answer<String>() {
@Override
public String answer(InvocationOnMock invocation) throws Throwable {
consumer.set((Consumer) invocation.getArguments()[6]);
return null;
}
})
.when(onlyChannel)
.basicConsume(
anyString(),
anyBoolean(),
anyString(),
anyBoolean(),
anyBoolean(),
anyMap(),
any(Consumer.class));
final CountDownLatch commitLatch = new CountDownLatch(1);
doAnswer(
new Answer<String>() {
@Override
public String answer(InvocationOnMock invocation) throws Throwable {
commitLatch.countDown();
return null;
}
})
.when(onlyChannel)
.txCommit();
final CountDownLatch latch = new CountDownLatch(1);
SimpleMessageListenerContainer container =
new SimpleMessageListenerContainer(cachingConnectionFactory);
container.setMessageListener(
new MessageListener() {
@Override
public void onMessage(Message message) {
RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);
rabbitTemplate.setChannelTransacted(true);
// should use same channel as container
rabbitTemplate.convertAndSend("foo", "bar", "baz");
latch.countDown();
}
});
container.setQueueNames("queue");
container.setChannelTransacted(true);
container.setShutdownTimeout(100);
container.afterPropertiesSet();
container.start();
consumer
.get()
.handleDelivery(
"qux", new Envelope(1, false, "foo", "bar"), new BasicProperties(), new byte[] {0});
assertTrue(latch.await(10, TimeUnit.SECONDS));
Exception e = tooManyChannels.get();
if (e != null) {
throw e;
}
verify(mockConnection, Mockito.times(1)).createChannel();
assertTrue(commitLatch.await(10, TimeUnit.SECONDS));
verify(onlyChannel).txCommit();
verify(onlyChannel)
.basicPublish(
Mockito.anyString(),
Mockito.anyString(),
Mockito.anyBoolean(),
Mockito.any(BasicProperties.class),
Mockito.any(byte[].class));
// verify close() was never called on the channel
DirectFieldAccessor dfa = new DirectFieldAccessor(cachingConnectionFactory);
List<?> channels = (List<?>) dfa.getPropertyValue("cachedChannelsTransactional");
assertEquals(0, channels.size());
container.stop();
}
/**
* Verifies that the listener channel is not exposed when so configured and up-stack
* RabbitTemplate uses the additional channel. created when exposeListenerChannel is false
* (ChannelAwareMessageListener).
*/
@SuppressWarnings("unchecked")
@Test
public void testChannelAwareMessageListenerDontExpose() throws Exception {
ConnectionFactory mockConnectionFactory = mock(ConnectionFactory.class);
Connection mockConnection = mock(Connection.class);
final Channel firstChannel = mock(Channel.class);
when(firstChannel.isOpen()).thenReturn(true);
final Channel secondChannel = mock(Channel.class);
when(secondChannel.isOpen()).thenReturn(true);
final SingleConnectionFactory singleConnectionFactory =
new SingleConnectionFactory(mockConnectionFactory);
when(mockConnectionFactory.newConnection((ExecutorService) null)).thenReturn(mockConnection);
when(mockConnection.isOpen()).thenReturn(true);
final AtomicReference<Exception> tooManyChannels = new AtomicReference<Exception>();
doAnswer(
new Answer<Channel>() {
boolean done;
@Override
public Channel answer(InvocationOnMock invocation) throws Throwable {
if (!done) {
done = true;
return firstChannel;
}
return secondChannel;
}
})
.when(mockConnection)
.createChannel();
final AtomicReference<Consumer> consumer = new AtomicReference<Consumer>();
doAnswer(
new Answer<String>() {
@Override
public String answer(InvocationOnMock invocation) throws Throwable {
consumer.set((Consumer) invocation.getArguments()[6]);
return null;
}
})
.when(firstChannel)
.basicConsume(
anyString(),
anyBoolean(),
anyString(),
anyBoolean(),
anyBoolean(),
anyMap(),
any(Consumer.class));
final CountDownLatch commitLatch = new CountDownLatch(1);
doAnswer(
new Answer<String>() {
@Override
public String answer(InvocationOnMock invocation) throws Throwable {
commitLatch.countDown();
return null;
}
})
.when(firstChannel)
.txCommit();
final CountDownLatch latch = new CountDownLatch(1);
final AtomicReference<Channel> exposed = new AtomicReference<Channel>();
SimpleMessageListenerContainer container =
new SimpleMessageListenerContainer(singleConnectionFactory);
container.setMessageListener(
new ChannelAwareMessageListener() {
@Override
public void onMessage(Message message, Channel channel) {
exposed.set(channel);
RabbitTemplate rabbitTemplate = new RabbitTemplate(singleConnectionFactory);
rabbitTemplate.setChannelTransacted(true);
// should use same channel as container
rabbitTemplate.convertAndSend("foo", "bar", "baz");
latch.countDown();
}
});
container.setQueueNames("queue");
container.setChannelTransacted(true);
container.setExposeListenerChannel(false);
container.setShutdownTimeout(100);
container.afterPropertiesSet();
container.start();
consumer
.get()
.handleDelivery(
"qux", new Envelope(1, false, "foo", "bar"), new BasicProperties(), new byte[] {0});
assertTrue(latch.await(10, TimeUnit.SECONDS));
Exception e = tooManyChannels.get();
if (e != null) {
throw e;
}
// once for listener, once for exposed + 0 for template (used bound)
verify(mockConnection, Mockito.times(2)).createChannel();
assertTrue(commitLatch.await(10, TimeUnit.SECONDS));
verify(firstChannel).txCommit();
verify(secondChannel).txCommit();
verify(secondChannel)
.basicPublish(
Mockito.anyString(),
Mockito.anyString(),
Mockito.anyBoolean(),
Mockito.any(BasicProperties.class),
Mockito.any(byte[].class));
assertSame(secondChannel, exposed.get());
verify(firstChannel, Mockito.never()).close();
verify(secondChannel, Mockito.times(1)).close();
container.stop();
}
public boolean isConnected() {
return connection != null && connection.isOpen() && channel != null && channel.isOpen();
}
private void expectChannelRecovery(Channel ch) throws InterruptedException {
assertTrue(ch.isOpen());
}