public void ShouldDisposeWithoutExecptionThrown()
{
using (var server = new FakeTcpServer(8999))
{
Thread.Sleep(500);
}
}
public void ShouldDisposeEvenWhenTryingToSendWithoutExceptionThrown()
{
using (var server = new FakeTcpServer(8999))
{
server.SendDataAsync("test");
Thread.Sleep(500);
}
}
public void ShouldDisposeWithoutExceptionThrown()
{
using (var server = new FakeTcpServer(8999))
using (var socket = new KafkaTcpSocket(_log, _kafkaEndpoint))
{
var conn = new KafkaConnection(socket, log: _log);
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
using (conn) { }
}
}
public void SendAsyncShouldWaitUntilClientIsConnected()
{
const int testData = 99;
using (var server = new FakeTcpServer(8999))
using (var client = new TcpClient())
{
server.SendDataAsync(testData.ToBytes());
Thread.Sleep(1000);
client.Connect(_fakeServerUrl.Host, _fakeServerUrl.Port);
var buffer = new byte[4];
client.GetStream().ReadAsync(buffer, 0, 4).Wait(TimeSpan.FromSeconds(5));
Assert.That(buffer.ToInt32(), Is.EqualTo(testData));
}
}
public void FakeShouldBeAbleToReconnect()
{
using (var server = new FakeTcpServer(8999))
{
byte[] received = null;
server.OnBytesReceived += data => received = data;
var t1 = new TcpClient();
t1.Connect(_fakeServerUrl.Host, _fakeServerUrl.Port);
TaskTest.WaitFor(() => server.ConnectionEventcount == 1);
server.DropConnection();
TaskTest.WaitFor(() => server.DisconnectionEventCount == 1);
var t2 = new TcpClient();
t2.Connect(_fakeServerUrl.Host, _fakeServerUrl.Port);
TaskTest.WaitFor(() => server.ConnectionEventcount == 2);
t2.GetStream().Write(99.ToBytes(), 0, 4);
TaskTest.WaitFor(() => received != null);
Assert.That(received.ToInt32(), Is.EqualTo(99));
}
}
public void ReadShouldReconnectAfterLosingConnection()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var disconnects = 0;
var connects = 0;
server.OnClientConnected += () => Interlocked.Increment(ref connects);
server.OnClientDisconnected += () => Interlocked.Increment(ref disconnects);
var socket = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var resultTask = ReadFromSocketWithRetry(socket, 4);
//wait till connected
TaskTest.WaitFor(() => connects > 0);
//drop connection
server.DropConnection();
TaskTest.WaitFor(() => disconnects > 0);
Assert.That(disconnects, Is.EqualTo(1), "Server should have disconnected the client.");
//wait for reconnection
TaskTest.WaitFor(() => connects > 1);
Assert.That(connects, Is.EqualTo(2), "Socket should have reconnected.");
//send data and get result
server.SendDataAsync(99.ToBytes());
Assert.That(resultTask.Result.ToInt32(), Is.EqualTo(99), "Socket should have received the 4 bytes.");
}
}
public void ReadShouldThrowServerDisconnectedExceptionWhenDisconnected()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var socket = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var resultTask = socket.ReadAsync(4);
//wait till connected
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
server.DropConnection();
TaskTest.WaitFor(() => server.DisconnectionEventCount > 0);
resultTask.ContinueWith(t => resultTask = t).Wait(TimeSpan.FromSeconds(1));
Assert.That(resultTask.IsFaulted, Is.True);
Assert.That(resultTask.Exception.InnerException, Is.TypeOf<ServerDisconnectedException>());
}
}
public void ReadShouldNotLoseDataFromStreamOverMultipleReads()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
const int firstMessage = 99;
const string secondMessage = "testmessage";
var payload = new KafkaMessagePacker()
.Pack(firstMessage)
.Pack(secondMessage, StringPrefixEncoding.None);
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
//send the combined payload
server.SendDataAsync(payload.PayloadNoLength());
var firstResponse = test.ReadAsync(4).Result.ToInt32();
Assert.That(firstResponse, Is.EqualTo(firstMessage));
var secondResponse = Encoding.ASCII.GetString(test.ReadAsync(secondMessage.Length).Result);
Assert.That(secondResponse, Is.EqualTo(secondMessage));
}
}
public void ReadShouldBeAbleToReceiveMoreThanOnceAsyncronously()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
const int firstMessage = 99;
const int secondMessage = 100;
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
Console.WriteLine("Sending first message to receive...");
server.SendDataAsync(firstMessage.ToBytes());
var firstResponseTask = test.ReadAsync(4);
Console.WriteLine("Sending second message to receive...");
server.SendDataAsync(secondMessage.ToBytes());
var secondResponseTask = test.ReadAsync(4);
Assert.That(firstResponseTask.Result.ToInt32(), Is.EqualTo(firstMessage));
Assert.That(secondResponseTask.Result.ToInt32(), Is.EqualTo(secondMessage));
}
}
public void SendAsyncShouldTimeoutByThrowingResponseTimeoutException()
{
using (var server = new FakeTcpServer(8999))
using (var socket = new KafkaTcpSocket(_log, _kafkaEndpoint))
using (var conn = new KafkaConnection(socket, TimeSpan.FromMilliseconds(100), log: _log))
{
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
Assert.That(server.ConnectionEventcount, Is.EqualTo(1));
var taskResult = conn.SendAsync(new MetadataRequest());
taskResult.ContinueWith(t => taskResult = t).Wait(TimeSpan.FromSeconds(1));
Assert.That(taskResult.IsFaulted, Is.True);
Assert.That(taskResult.Exception.InnerException, Is.TypeOf<ResponseTimeoutException>());
}
}
public void WriteShouldHandleLargeVolumeSendAsynchronously()
{
var write = new List<int>();
using (var server = new FakeTcpServer(FakeServerPort))
{
server.OnBytesReceived += data => write.AddRange(data.Batch(4).Select(x => x.ToArray().ToInt32()));
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var tasks = Enumerable.Range(1, 10000)
.SelectMany(i => new[]
{
test.WriteAsync(i.ToBytes()),
}).ToArray();
Task.WaitAll(tasks);
Assert.That(write.OrderBy(x => x), Is.EqualTo(Enumerable.Range(1, 10000)));
}
}
public void WriteAsyncShouldAllowMoreThanOneWrite()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
const int testData = 99;
var results = new List<byte>();
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
server.OnBytesReceived += results.AddRange;
Task.WaitAll(test.WriteAsync(testData.ToBytes()), test.WriteAsync(testData.ToBytes()));
TaskTest.WaitFor(() => results.Count >= 8);
Assert.That(results.Count, Is.EqualTo(8));
}
}
public void ReadShouldLogDisconnectAndRecover()
{
var mockLog = _kernel.GetMock<IKafkaLog>();
using (var server = new FakeTcpServer(8999))
using (var socket = new KafkaTcpSocket(mockLog.Object, _kafkaEndpoint))
using (var conn = new KafkaConnection(socket, log: mockLog.Object))
{
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
Assert.That(server.ConnectionEventcount, Is.EqualTo(1));
server.DropConnection();
TaskTest.WaitFor(() => server.DisconnectionEventCount > 0);
Assert.That(server.DisconnectionEventCount, Is.EqualTo(1));
//Wait a while for the client to notice the disconnect and log
Thread.Sleep(15);
//should log an exception and keep going
mockLog.Verify(x => x.ErrorFormat(It.IsAny<string>(), It.IsAny<Exception>()));
TaskTest.WaitFor(() => server.ConnectionEventcount > 1);
Assert.That(server.ConnectionEventcount, Is.EqualTo(2));
}
}
public void SendAsyncShouldTimeoutMultipleMessagesAtATime()
{
using (var server = new FakeTcpServer(8999))
using (var socket = new KafkaTcpSocket(_log, _kafkaEndpoint))
using (var conn = new KafkaConnection(socket, TimeSpan.FromMilliseconds(100), log: _log))
{
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
Assert.That(server.ConnectionEventcount, Is.EqualTo(1));
var tasks = new[]
{
conn.SendAsync(new MetadataRequest()),
conn.SendAsync(new MetadataRequest()),
conn.SendAsync(new MetadataRequest())
};
Task.WhenAll(tasks);
TaskTest.WaitFor(() => tasks.Any(t => t.IsFaulted));
foreach (var task in tasks)
{
Assert.That(task.IsFaulted, Is.True);
Assert.That(task.Exception.InnerException, Is.TypeOf<ResponseTimeoutException>());
}
}
}
public void ReadShouldStackReadRequestsAndReturnOneAtATime()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var messages = new[] { "test1", "test2", "test3", "test4" };
var expectedLength = "test1".Length;
var payload = new KafkaMessagePacker().Pack(messages);
var socket = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var tasks = messages.Select(x => socket.ReadAsync(x.Length)).ToArray();
server.SendDataAsync(payload.Payload());
Task.WaitAll(tasks);
foreach (var task in tasks)
{
Assert.That(task.Result.Length, Is.EqualTo(expectedLength));
}
}
}
public void ReadShouldCancelWhileAwaitingResponse()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var count = 0;
var semaphore = new SemaphoreSlim(0);
var token = new CancellationTokenSource();
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
test.ReadAsync(4, token.Token).ContinueWith(t =>
{
Interlocked.Increment(ref count);
Assert.That(t.IsCanceled, Is.True, "Task should be set to cancelled when disposed.");
semaphore.Release();
});
Thread.Sleep(100);
token.Cancel();
semaphore.Wait(TimeSpan.FromSeconds(1));
Assert.That(count, Is.EqualTo(1), "Read should have cancelled and incremented count.");
}
}
public void WriteAsyncShouldSendData()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
const int testData = 99;
int result = 0;
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
server.OnBytesReceived += data => result = data.ToInt32();
test.WriteAsync(testData.ToBytes()).Wait(TimeSpan.FromSeconds(1));
TaskTest.WaitFor(() => result > 0);
Assert.That(result, Is.EqualTo(testData));
}
}
public void ReadShouldBlockUntilAllBytesRequestedAreReceived()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var count = 0;
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var resultTask = test.ReadAsync(4).ContinueWith(t =>
{
Interlocked.Increment(ref count);
return t.Result;
});
Console.WriteLine("Sending first 3 bytes...");
var sendInitialBytes = server.SendDataAsync(new byte[] { 0, 0, 0 }).Wait(TimeSpan.FromSeconds(10));
Assert.That(sendInitialBytes, Is.True, "First 3 bytes should have been sent.");
Console.WriteLine("Ensuring task blocks...");
var unblocked = resultTask.Wait(TimeSpan.FromMilliseconds(500));
Assert.That(unblocked, Is.False, "Wait should return false.");
Assert.That(resultTask.IsCompleted, Is.False, "Task should still be running, blocking.");
Assert.That(count, Is.EqualTo(0), "Should still block even though bytes have been received.");
Console.WriteLine("Sending last byte...");
var sendLastByte = server.SendDataAsync(new byte[] { 0 }).Wait(TimeSpan.FromSeconds(10));
Assert.That(sendLastByte, Is.True, "Last byte should have sent.");
Console.WriteLine("Ensuring task unblocks...");
resultTask.Wait(TimeSpan.FromMilliseconds(500));
Assert.That(resultTask.IsCompleted, Is.True, "Task should have completed.");
Assert.That(count, Is.EqualTo(1), "Task ContinueWith should have executed.");
Assert.That(resultTask.Result.Length, Is.EqualTo(4), "Result of task should be 4 bytes.");
}
}
public void WriteAndReadShouldBeAsynchronous()
{
var write = new List<int>();
var read = new List<int>();
var expected = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
using (var server = new FakeTcpServer(FakeServerPort))
{
server.OnBytesReceived += data => write.AddRange(data.Batch(4).Select(x => x.ToArray().ToInt32()));
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var tasks = Enumerable.Range(1, 10)
.SelectMany(i => new[]
{
test.WriteAsync(i.ToBytes()),
test.ReadAsync(4).ContinueWith(t => read.Add(t.Result.ToInt32())),
server.SendDataAsync(i.ToBytes())
}).ToArray();
Task.WaitAll(tasks);
Assert.That(write.OrderBy(x => x), Is.EqualTo(expected));
Assert.That(read.OrderBy(x => x), Is.EqualTo(expected));
}
}
public void ReadShouldBeAbleToReceiveMoreThanOnce()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
const int firstMessage = 99;
const string secondMessage = "testmessage";
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
Console.WriteLine("Sending first message to receive...");
server.SendDataAsync(firstMessage.ToBytes());
var firstResponse = test.ReadAsync(4).Result.ToInt32();
Assert.That(firstResponse, Is.EqualTo(firstMessage));
Console.WriteLine("Sending second message to receive...");
server.SendDataAsync(secondMessage);
var secondResponse = Encoding.ASCII.GetString(test.ReadAsync(secondMessage.Length).Result);
Assert.That(secondResponse, Is.EqualTo(secondMessage));
}
}
public void KafkaTcpSocketShouldDisposeEvenWhileAwaitingReadAndThrowException()
{
using (var server = new FakeTcpServer(FakeServerPort))
{
var test = new KafkaTcpSocket(new DefaultTraceLog(), _fakeServerUrl);
var taskResult = test.ReadAsync(4);
using (test) { }
taskResult.ContinueWith(t => taskResult = t).Wait(TimeSpan.FromSeconds(1));
Assert.That(taskResult.IsFaulted, Is.True);
Assert.That(taskResult.Exception.InnerException, Is.TypeOf<ObjectDisposedException>());
}
}
public void ReadShouldIgnoreMessageWithUnknownCorrelationId()
{
const int correlationId = 99;
var mockLog = _kernel.GetMock<IKafkaLog>();
using (var server = new FakeTcpServer(8999))
using (var socket = new KafkaTcpSocket(mockLog.Object, _kafkaEndpoint))
using (var conn = new KafkaConnection(socket, log: mockLog.Object))
{
//send correlation message
server.SendDataAsync(CreateCorrelationMessage(correlationId)).Wait(TimeSpan.FromSeconds(5));
//wait for connection
TaskTest.WaitFor(() => server.ConnectionEventcount > 0);
Assert.That(server.ConnectionEventcount, Is.EqualTo(1));
Thread.Sleep(10);
//should log a warning and keep going
mockLog.Verify(x => x.WarnFormat(It.IsAny<string>(), It.Is<int>(o => o == correlationId)));
}
}
