public async Task Send()
{
await CreateResponseQueue();
QueueClient sendClient = QueueClient.CreateFromConnectionString(ConfigurationManager.AppSettings[Helpers.ConnectionStringKey], Helpers.BasicQueueName);
QueueClient responseClient = QueueClient.CreateFromConnectionString(ConfigurationManager.AppSettings[Helpers.ConnectionStringKey], Helpers.ResponseQueue);
byte[] messageData = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(Helpers.GetModels()));
string sessionId = Guid.NewGuid().ToString("N");
BrokeredMessage message = new BrokeredMessage(new MemoryStream(messageData), true)
{
ContentType = "application/json",
Label = "dynamic data",
TimeToLive = TimeSpan.FromMinutes(20),
ReplyToSessionId = sessionId,
ReplyTo = Helpers.ResponseQueue
};
await sendClient.SendAsync(message);
MessageSession messageSession = await responseClient.AcceptMessageSessionAsync(sessionId);
BrokeredMessage responseMessage = await messageSession.ReceiveAsync();
string responseMessageBody = responseMessage.GetBody <string>();
Console.WriteLine($"Message response received: \n{responseMessageBody}");
}
protected async void cmdSend2_Click(object sender, EventArgs e)
{
byte[] dataArr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
BrokeredMessage msg = new BrokeredMessage(dataArr);
msg.Properties.Add("suma", 1);
msg.ReplyToSessionId = Guid.NewGuid().ToString("N");
await m_tc.SendAsync(msg);
MessageSession session = m_qc.AcceptMessageSession(msg.ReplyToSessionId, TimeSpan.FromSeconds(60));
List <BrokeredMessage> lst = new List <BrokeredMessage>();
while (lst.Count < 2)
{
msg = await session.ReceiveAsync();
if (msg != null)
{
lst.Add(msg);
await msg.CompleteAsync();
}
}
lblInfo.Text = "";
foreach (var item in lst)
{
lblInfo.Text += item.GetBody <string>();
}
}
public async Task <ActionResult> Sub(int a = 5, int b = 12)
{
int result = 0;
Param p = new Param {
A = a, B = b
};
BrokeredMessage msg = new BrokeredMessage(p);
msg.Properties.Add("operation", 2);
msg.ReplyToSessionId = Guid.NewGuid().ToString("N");
await m_tc.SendAsync(msg);
string session = msg.ReplyToSessionId;
msg = null;
while (msg == null)
{
MessageSession msgsession = m_qc.AcceptMessageSession(session, TimeSpan.FromSeconds(360));
msg = await msgsession.ReceiveAsync();
if (msg != null)
{
result = msg.GetBody <int>();
}
}
return(View(result));
}
/// <summary>
/// Receives the messages in an asynchronous loop and closes the session once there are no more messages.
/// </summary>
private void ReceiveMessagesAndCloseSession(MessageSession session, CancellationToken cancellationToken)
{
CountdownEvent unreleasedMessages = new CountdownEvent(1);
Action <bool> closeSession = (bool success) =>
{
Action doClose = () =>
{
try
{
unreleasedMessages.Signal();
if (!unreleasedMessages.Wait(15000, cancellationToken))
{
Trace.TraceWarning("Waited for pending unreleased messages before closing session in subscription {0} but they did not complete in time", this.subscription);
}
}
catch (OperationCanceledException)
{
}
finally
{
unreleasedMessages.Dispose();
}
this.receiveRetryPolicy.ExecuteAsync(() => session.CloseAsync().ContinueWith(s =>
{
if (s.Exception != null)
{
Exception ex = s.Exception;
this.instrumentation.SessionEnded();
Trace.TraceError("An unrecoverable error occurred while trying to close a session in subscription {1}:\r\n{0}", ex, this.subscription);
this.dynamicThrottling.NotifyWorkCompletedWithError();
}
else
{
this.instrumentation.SessionEnded();
if (success)
{
this.dynamicThrottling.NotifyWorkCompleted();
}
else
{
this.dynamicThrottling.NotifyWorkCompletedWithError();
}
}
}));
};
if (this.requiresSequentialProcessing)
{
doClose.Invoke();
}
else
{
// Allow some time for releasing the messages before closing. Also, continue in a non I/O completion thread in order to block.
TaskEx.Delay(200).ContinueWith(t => doClose());
}
};
// Declare an action to receive the next message in the queue or closes the session if cancelled.
Action receiveNext = null;
// Declare an action acting as a callback whenever a non-transient exception occurs while receiving or processing messages.
Action <Exception> recoverReceive = null;
// Declare an action responsible for the core operations in the message receive loop.
Action receiveMessage = (() =>
{
// Use a retry policy to execute the Receive action in an asynchronous and reliable fashion.
this.receiveRetryPolicy.ExecuteAsync(() => session.ReceiveAsync(TimeSpan.Zero).ContinueWith(m =>
{
if (m.Exception != null)
{
recoverReceive.Invoke(m.Exception);
}
else
{
BrokeredMessage msg = m.Result;
if (msg != null)
{
var roundtripStopwatch = Stopwatch.StartNew();
long schedulingElapsedMilliseconds = 0;
long processingElapsedMilliseconds = 0;
unreleasedMessages.AddCount();
Task.Factory.StartNew(() =>
{
var releaseAction = MessageReleaseAction.AbandonMessage;
try
{
this.instrumentation.MessageReceived();
schedulingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds;
// Make sure the process was told to stop receiving while it was waiting for a new message.
if (!cancellationToken.IsCancellationRequested)
{
try
{
try
{
// Process the received message.
releaseAction = this.InvokeMessageHandler(msg);
processingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds - schedulingElapsedMilliseconds;
this.instrumentation.MessageProcessed(releaseAction.Kind == MessageReleaseActionKind.Complete, processingElapsedMilliseconds);
}
catch
{
processingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds - schedulingElapsedMilliseconds;
this.instrumentation.MessageProcessed(false, processingElapsedMilliseconds);
throw;
}
}
finally
{
if (roundtripStopwatch.Elapsed > TimeSpan.FromSeconds(45))
{
this.dynamicThrottling.Penalize();
}
}
}
}
finally
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
if (this.requiresSequentialProcessing)
{
this.ReleaseMessage(msg, releaseAction, () => { receiveNext(); }, () => { closeSession(false); }, unreleasedMessages, processingElapsedMilliseconds, schedulingElapsedMilliseconds, roundtripStopwatch);
}
else
{
// Receives next without waiting for the message to be released.
this.ReleaseMessage(msg, releaseAction, () => { }, () => { this.dynamicThrottling.Penalize(); }, unreleasedMessages, processingElapsedMilliseconds, schedulingElapsedMilliseconds, roundtripStopwatch);
receiveNext.Invoke();
}
}
});
}
else
{
// no more messages in the session, close it and do not continue receiving
closeSession(true);
}
}
}));
});
// Initialize an action to receive the next message in the queue or closes the session if cancelled.
receiveNext = () =>
{
if (!cancellationToken.IsCancellationRequested)
{
// Continue receiving and processing new messages until told to stop.
receiveMessage.Invoke();
}
else
{
closeSession(true);
}
};
// Initialize a custom action acting as a callback whenever a non-transient exception occurs while receiving or processing messages.
recoverReceive = ex =>
{
// Just log an exception. Do not allow an unhandled exception to terminate the message receive loop abnormally.
Trace.TraceError("An unrecoverable error occurred while trying to receive a new message from subscription {1}:\r\n{0}", ex, this.subscription);
// Cannot continue to receive messages from this session.
closeSession(false);
};
// Start receiving messages asynchronously for the session.
receiveNext.Invoke();
}
/// <summary>
/// Receives the messages in an asynchronous loop and closes the session once there are no more messages.
/// </summary>
private void ReceiveMessagesAndCloseSession(MessageSession session, CancellationToken cancellationToken)
{
CountdownEvent unreleasedMessages = new CountdownEvent(1);
Action<bool> closeSession = (bool success) =>
{
Action doClose = () =>
{
try
{
unreleasedMessages.Signal();
if (!unreleasedMessages.Wait(15000, cancellationToken))
{
Trace.TraceWarning("Waited for pending unreleased messages before closing session in subscription {0} but they did not complete in time", this.subscription);
}
}
catch (OperationCanceledException)
{
}
finally
{
unreleasedMessages.Dispose();
}
this.receiveRetryPolicy.ExecuteAsync(() => session.CloseAsync().ContinueWith(s =>
{
if (s.Exception != null)
{
Exception ex = s.Exception;
this.instrumentation.SessionEnded();
Trace.TraceError("An unrecoverable error occurred while trying to close a session in subscription {1}:\r\n{0}", ex, this.subscription);
this.dynamicThrottling.NotifyWorkCompletedWithError();
}
else
{
this.instrumentation.SessionEnded();
if (success)
{
this.dynamicThrottling.NotifyWorkCompleted();
}
else
{
this.dynamicThrottling.NotifyWorkCompletedWithError();
}
}
}));
};
if (this.requiresSequentialProcessing)
{
doClose.Invoke();
}
else
{
// Allow some time for releasing the messages before closing. Also, continue in a non I/O completion thread in order to block.
TaskEx.Delay(200).ContinueWith(t => doClose());
}
};
// Declare an action to receive the next message in the queue or closes the session if cancelled.
Action receiveNext = null;
// Declare an action acting as a callback whenever a non-transient exception occurs while receiving or processing messages.
Action<Exception> recoverReceive = null;
// Declare an action responsible for the core operations in the message receive loop.
Action receiveMessage = (() =>
{
// Use a retry policy to execute the Receive action in an asynchronous and reliable fashion.
this.receiveRetryPolicy.ExecuteAsync(() => session.ReceiveAsync(TimeSpan.Zero).ContinueWith(m =>
{
if (m.Exception != null)
{
recoverReceive.Invoke(m.Exception);
}
else
{
BrokeredMessage msg = m.Result;
if (msg != null)
{
var roundtripStopwatch = Stopwatch.StartNew();
long schedulingElapsedMilliseconds = 0;
long processingElapsedMilliseconds = 0;
unreleasedMessages.AddCount();
Task.Factory.StartNew(() =>
{
var releaseAction = MessageReleaseAction.AbandonMessage;
try
{
this.instrumentation.MessageReceived();
schedulingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds;
// Make sure the process was told to stop receiving while it was waiting for a new message.
if (!cancellationToken.IsCancellationRequested)
{
try
{
try
{
// Process the received message.
releaseAction = this.InvokeMessageHandler(msg);
processingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds - schedulingElapsedMilliseconds;
this.instrumentation.MessageProcessed(releaseAction.Kind == MessageReleaseActionKind.Complete, processingElapsedMilliseconds);
}
catch
{
processingElapsedMilliseconds = roundtripStopwatch.ElapsedMilliseconds - schedulingElapsedMilliseconds;
this.instrumentation.MessageProcessed(false, processingElapsedMilliseconds);
throw;
}
}
finally
{
if (roundtripStopwatch.Elapsed > TimeSpan.FromSeconds(45))
{
this.dynamicThrottling.Penalize();
}
}
}
}
finally
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
if (this.requiresSequentialProcessing)
{
this.ReleaseMessage(msg, releaseAction, () => { receiveNext(); }, () => { closeSession(false); }, unreleasedMessages, processingElapsedMilliseconds, schedulingElapsedMilliseconds, roundtripStopwatch);
}
else
{
// Receives next without waiting for the message to be released.
this.ReleaseMessage(msg, releaseAction, () => { }, () => { this.dynamicThrottling.Penalize(); }, unreleasedMessages, processingElapsedMilliseconds, schedulingElapsedMilliseconds, roundtripStopwatch);
receiveNext.Invoke();
}
}
});
}
else
{
// no more messages in the session, close it and do not continue receiving
closeSession(true);
}
}
}));
});
// Initialize an action to receive the next message in the queue or closes the session if cancelled.
receiveNext = () =>
{
if (!cancellationToken.IsCancellationRequested)
{
// Continue receiving and processing new messages until told to stop.
receiveMessage.Invoke();
}
else
{
closeSession(true);
}
};
// Initialize a custom action acting as a callback whenever a non-transient exception occurs while receiving or processing messages.
recoverReceive = ex =>
{
// Just log an exception. Do not allow an unhandled exception to terminate the message receive loop abnormally.
Trace.TraceError("An unrecoverable error occurred while trying to receive a new message from subscription {1}:\r\n{0}", ex, this.subscription);
// Cannot continue to receive messages from this session.
closeSession(false);
};
// Start receiving messages asynchronously for the session.
receiveNext.Invoke();
}
