public async Task TestReleaseConsumerRace()
{
var connectionFactory = new CachingConnectionFactory("localhost");
var container = new DirectReplyToMessageListenerContainer(null, connectionFactory);
var latch = new CountdownEvent(1);
container.MessageListener = new EmptyListener();
var mockMessageListener = new MockChannelAwareMessageListener(container.MessageListener, latch);
container.SetChannelAwareMessageListener(mockMessageListener);
var foobytes = EncodingUtils.GetDefaultEncoding().GetBytes("foo");
var barbytes = EncodingUtils.GetDefaultEncoding().GetBytes("bar");
await container.Start();
Assert.True(container._startedLatch.Wait(TimeSpan.FromSeconds(10)));
var channel1 = container.GetChannelHolder();
var props = channel1.Channel.CreateBasicProperties();
props.ReplyTo = Address.AMQ_RABBITMQ_REPLY_TO;
RC.IModelExensions.BasicPublish(channel1.Channel, string.Empty, TEST_RELEASE_CONSUMER_Q, props, foobytes);
var replyChannel = connectionFactory.CreateConnection().CreateChannel(false);
var request = replyChannel.BasicGet(TEST_RELEASE_CONSUMER_Q, true);
var n = 0;
while (n++ < 100 && request == null)
{
Thread.Sleep(100);
request = replyChannel.BasicGet(TEST_RELEASE_CONSUMER_Q, true);
}
Assert.NotNull(request);
props = channel1.Channel.CreateBasicProperties();
RC.IModelExensions.BasicPublish(replyChannel, string.Empty, request.BasicProperties.ReplyTo, props, barbytes);
replyChannel.Close();
Assert.True(latch.Wait(TimeSpan.FromSeconds(10)));
var channel2 = container.GetChannelHolder();
Assert.Same(channel1.Channel, channel2.Channel);
container.ReleaseConsumerFor(channel1, false, null); // simulate race for future timeout/cancel and onMessage()
var inUse = container._inUseConsumerChannels;
Assert.Single(inUse);
container.ReleaseConsumerFor(channel2, false, null);
Assert.Empty(inUse);
await container.Stop();
connectionFactory.Destroy();
}
public ChannelAwareMessageListener(DirectReplyToMessageListenerContainer container, IMessageListener listener)
{
_container = container;
_listener = listener;
}