/// <summary>
/// A message was received on monitored MSMQ queue
/// </summary>
/// <param name="receiver">MSMQ Receiver that received the message</param>
/// <param name="message">MSMQ Message received</param>
/// <remarks>
/// We want to now notify the original workflow that subscribed to this
/// MSMQ queue that a message was received. For this we need to first copy
/// all the relevant data in the MSMQ message into a serializable format
/// so we can put it into the WorkflowQueue given to us when
/// the subscription was done.
/// </remarks>
private void OnMessageReceived(Receiver receiver, Message message)
{
if ( receiver == null )
throw new ArgumentNullException("receiver");
if ( message == null )
throw new ArgumentNullException("message");
try
{
_lock.AcquireReaderLock(Timeout.Infinite);
foreach ( MsmqSubscription subscription in _subscriptionsByID.Values )
{
StringComparer comparer = StringComparer.InvariantCultureIgnoreCase;
if ( comparer.Compare(subscription.MsmqQueue, message.DestinationQueue.FormatName) == 0 )
{
// ensure that each instance gets it's own copy
MessageDataEventArgs data = new MessageDataEventArgs(message);
NotifyWorkflow(subscription, data);
}
}
} finally
{
_lock.ReleaseReaderLock();
}
}
private void NotifyWorkflow(MsmqSubscription subscription, MessageDataEventArgs data)
{
TraceUtil.WriteInfo("MsmqListenerService::NotifyWorkflow({0}, {1})", subscription.MsmqQueue, subscription.WfQueueName);
WorkflowInstance instance =
Runtime.GetWorkflow(subscription.WorkflowInstance);
instance.EnqueueItem(subscription.WfQueueName, data, null, null);
}
