public void QueueFullTest()
{
var config = new Configuration.MemcacheClientConfiguration
{
QueueLength = 1,
};
int transportAvailablized = 0;
using (var serverMock = new ServerMock())
using (var transportToTest = new MemcacheTransport(serverMock.ListenEndPoint, config, t => { }, t => Interlocked.Increment(ref transportAvailablized), false, null))
{
var requestHeader = new MemcacheResponseHeader
{
Cas = 1,
DataType = 2,
ExtraLength = 4,
KeyLength = 0,
Opaque = 42,
Opcode = Opcode.Get,
Status = Headers.Status.KeyNotFound,
TotalBodyLength = 4,
};
requestHeader.ToData(serverMock.ResponseHeader);
serverMock.ResponseBody = new byte[4];
serverMock.ReceiveMutex = new ManualResetEventSlim();
var clientMutex = new ManualResetEventSlim();
var request1 = new GetRequest
{
RequestId = (uint)42,
Key = "Hello, world".Select(c => (byte)c).ToArray(),
RequestOpcode = Opcode.Get,
CallBack = (r, v) => clientMutex.Set(),
};
var request2 = new GetRequest
{
RequestId = (uint)42,
Key = "Hello, world".Select(c => (byte)c).ToArray(),
RequestOpcode = Opcode.Get,
CallBack = (r, v) => { },
};
// we sent a first request and let the server wait before respond
Assert.IsTrue(transportToTest.TrySend(request1), "The first request failed to be sent");
Assert.That(() => transportAvailablized, Is.EqualTo(2).After(1000, 50));
// we check that the queue is full, and the transport fail to send a new request
Assert.IsFalse(transportToTest.TrySend(request2), "The second request should not have been sent");
// unblocks both server response and callback from client
serverMock.ReceiveMutex.Set();
Assert.IsTrue(clientMutex.Wait(1000), "The response callback has not been triggered for the first request");
// make sure that we triggered the transport available after the queue is not full anymore
Assert.That(() => transportAvailablized, Is.EqualTo(3).After(1000, 50));
// checks if we can send a new request since the queue is not full anymore
Assert.IsTrue(transportToTest.TrySend(request2), "The third request failed to be sent");
Assert.That(() => transportAvailablized, Is.EqualTo(4).After(1000, 50));
}
}
public void AuthenticationTest()
{
var config = new Configuration.MemcacheClientConfiguration
{
Authenticator = Configuration.MemcacheClientConfiguration.SaslPlainAuthenticatorFactory(string.Empty, "NoLogin", "NoPass"),
};
using (var serverMock = new ServerMock())
using (var transport = new MemcacheTransport(serverMock.ListenEndPoint, config,
t => { },
t => { }, false, null))
{
var mutex = new ManualResetEventSlim();
new MemcacheResponseHeader
{
Opaque = 0,
Opcode = Opcode.StartAuth,
Status = Status.NoError,
}.ToData(serverMock.ResponseHeader);
Status responseStatus = Status.InternalError;
Assert.IsTrue(transport.TrySend(new NoOpRequest {
RequestId = 0, Callback = h => { mutex.Set(); responseStatus = h.Status; }
})
, "Unable to send a request on authenticated transport");
Assert.IsTrue(mutex.Wait(1000), "No response retrived on authenticated transport");
Assert.AreEqual(Status.NoError, responseStatus, "The response returned on error");
}
}
public void MemcacheSocketTest([Values(0, 2, 10)] int maxByteSentByServer)
{
using (var serverMock = new ServerMock())
{
var endPoint = serverMock.ListenEndPoint;
serverMock.MaxSent = maxByteSentByServer;
// random header
var requestHeader = new MemcacheRequestHeader
{
Cas = 1,
DataType = 2,
ExtraLength = 5,
KeyLength = 3,
Opaque = 42,
Opcode = Opcode.Increment,
TotalBodyLength = 12,
};
// body with the size defined in the header
var requestBody = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
// build the request buffer
var requestBuffer = new byte[MemcacheRequestHeader.Size + requestHeader.TotalBodyLength];
requestHeader.ToData(requestBuffer);
Array.Copy(requestBody, 0, requestBuffer, MemcacheRequestHeader.Size, requestHeader.TotalBodyLength);
// build the response header
var responseHeader = new MemcacheResponseHeader
{
Cas = 8,
DataType = 12,
ExtraLength = 3,
KeyLength = 0,
// must be the same or it will crash : TODO add a test to ensure we detect this fail
Opaque = requestHeader.Opaque,
Status = Status.UnknownCommand,
Opcode = Opcode.Prepend,
TotalBodyLength = 15,
};
// body with the size defined in the header
var responseExtra = new byte[] { 1, 2, 3 };
var responseMessage = new byte[] { 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
// build the request buffer
var responseBody = new byte[responseHeader.TotalBodyLength];
Array.Copy(responseExtra, 0, responseBody, 0, responseHeader.ExtraLength);
Array.Copy(responseMessage, 0, responseBody, responseHeader.ExtraLength, responseHeader.TotalBodyLength - responseHeader.ExtraLength);
// set the things to answer to the server
serverMock.ResponseBody = responseBody;
responseHeader.ToData(serverMock.ResponseHeader);
var request = new RequestMock
{
QueryBuffer = requestBuffer,
RequestId = requestHeader.Opaque
/*ResponseHeader = responseHeader,
* Message = responseMessage,
* Extra = responseExtra,*/
};
using (var transport = new MemcacheTransport(endPoint, new MemcacheClientConfiguration(), _ => { }, _ => { }, false, null))
{
Assert.IsTrue(transport.TrySend(request));
Assert.IsTrue(request.Mutex.Wait(TimeSpan.FromSeconds(10)), "The request has not been completed on less than 10 sec");
// and now, assert that we sent what we had to send and we received what the server sent
Assert.AreEqual(requestHeader, serverMock.LastReceivedHeader, "Sent header differ from header received by the server");
CollectionAssert.AreEqual(requestBody, serverMock.LastReceivedBody, "Sent body is different than received by the server");
Assert.AreEqual(responseHeader, request.ResponseHeader, "Received header differ from header sent by the server");
CollectionAssert.AreEqual(responseExtra, request.Extra, "Received extra is different than sent by the server");
CollectionAssert.AreEqual(responseMessage, request.Message, "Received message is different than sent by the server");
}
}
}
public void AuthenticationFailed()
{
var sentMutex = new ManualResetEventSlim(false);
using (var serverStub = new ServerMock())
{
IMemcacheRequest authenticationRequest = null;
// a token that fails
var authenticatorTokenFailing = new Moq.Mock <IAuthenticationToken>();
authenticatorTokenFailing
.Setup(t => t.StepAuthenticate(Moq.It.IsAny <TimeSpan>(), out authenticationRequest))
.Returns(Status.TemporaryFailure);
// a token that works
var authenticatorTokenOk = new Moq.Mock <IAuthenticationToken>();
authenticatorTokenOk
.Setup(t => t.StepAuthenticate(Moq.It.IsAny <TimeSpan>(), out authenticationRequest))
.Returns(Status.NoError);
// an authenticator that returns one failing token followed by working tokens
bool alreadyFailed = false;
var authenticator = new Moq.Mock <IMemcacheAuthenticator>();
authenticator
.Setup(auth => auth.CreateToken())
.Returns(() =>
{
if (alreadyFailed)
{
return(authenticatorTokenOk.Object);
}
alreadyFailed = true;
return(authenticatorTokenFailing.Object);
});
// setup the request to send
bool requestFailed = false;
bool requestAchieved = false;
var request = new Moq.Mock <IMemcacheRequest>();
request
.Setup(r => r.Fail())
.Callback(() =>
{
requestFailed = true;
sentMutex.Set();
});
request
.Setup(r => r.HandleResponse(
Moq.It.Is <Headers.MemcacheResponseHeader>(h => h.Status == Status.NoError),
Moq.It.IsAny <byte[]>(),
Moq.It.IsAny <byte[]>(),
Moq.It.IsAny <byte[]>()))
.Callback(() =>
{
requestAchieved = true;
sentMutex.Set();
});
var queryBuffer = new byte[MemcacheRequestHeader.Size];
new MemcacheRequestHeader().ToData(queryBuffer);
request
.Setup(r => r.GetQueryBuffer())
.Returns(queryBuffer);
IMemcacheTransport transportToWork = null;
var transportToFail = new MemcacheTransport(
serverStub.ListenEndPoint,
new MemcacheClientConfiguration
{
SocketTimeout = TimeSpan.Zero,
Authenticator = authenticator.Object,
},
_ => { },
t =>
{
Interlocked.Exchange(ref transportToWork, t);
},
false,
() => false);
new MemcacheResponseHeader
{
Status = Status.NoError,
Opcode = Opcode.Get,
}.ToData(serverStub.ResponseHeader);
Exception raised = null;
transportToFail.TransportError += e =>
// when the transport fails collect the exception
Interlocked.Exchange(ref raised, e);
var sent = transportToFail.TrySend(request.Object);
Assert.IsFalse(sent, "The request send should fail");
Assert.IsNotNull(raised, "The authentication should have failed");
// wait for reconnection to happen (should be done in a instant timer)
Assert.That(ref transportToWork, (!Is.Null).After(1000, 10), "The working transport should have been set");
sent = transportToWork.TrySend(request.Object);
Assert.IsTrue(sent, "The request should have been sent");
var received = sentMutex.Wait(TimeSpan.FromMinutes(5));
Assert.IsTrue(received, "The response should have been received");
Assert.IsFalse(requestFailed, "The request should not have failed");
Assert.IsTrue(requestAchieved, "The request should have achieved");
}
}