private bool MessageDispatcher_RETRY(MessageQueueTransaction mqtx, Message msg, IMessage imsgReq)
{
// scope state
bool result = false;
int intRetryCounter = 0;
MessageQueue RetryQueue = null;
try
{
// check the message state (retry property)
if (imsgReq.Properties.Contains(MSMQChannelProperties.RetryCounter) &&
(imsgReq.Properties[MSMQChannelProperties.RetryCounter] is int))
{
intRetryCounter = Convert.ToInt32(imsgReq.Properties[MSMQChannelProperties.RetryCounter]);
}
// check the retry progress
if (intRetryCounter < RetryCounter)
{
// update message state
imsgReq.Properties[MSMQChannelProperties.RetryCounter] = ++intRetryCounter;
// open the queue
RetryQueue = new MessageQueue();
RetryQueue.Path = m_RetryQueuePath;
RetryQueue.Formatter = new BinaryMessageFormatter();
// create message label
string label = string.Format("Retry*{0}", msg.Label);
// option: disable timeout, now the message has a lifetime forever
if (UseTimeout == false)
{
msg.TimeToBeReceived = Message.InfiniteTimeout;
}
// send message (move message to the waiting queue, after mqtx.commit of course)
RetryQueue.Send(msg, label, mqtx);
// echo
Trace.WriteLine(string.Format("[{0}]MSMQChannel.Receiver:MessageDispatcher_RETRY done for {1}x", ChannelName, intRetryCounter - 1));
// result (retry is in progress)
result = true;
}
}
catch (Exception ex)
{
Trace.WriteLine(string.Format("[{0}]MSMQChannel.Receiver:MessageDispatcher_RETRY failed, error={1}", ChannelName, ex.Message));
}
finally
{
if (RetryQueue != null)
{
RetryQueue.Close();
}
}
return(result);
}
static void RetryTimer_Elapsed(object sender, ElapsedEventArgs e)
{
RetryWatch[] queue;
lock (RetryQueue) {
queue = RetryQueue.Values.ToArray();
}
queue = queue.Where(rw => DoRetry(rw)).ToArray();
lock (RetryQueue) {
foreach (RetryWatch resolved in queue)
{
RetryQueue.Remove(resolved.eventArgs);
}
}
}
static void Retry(FileSystemEventArgs e, FileSystemWatcher sender)
{
lock (RetryQueue) {
if (RetryQueue.ContainsKey(e))
{
RetryQueue[e].retries--;
if (RetryQueue[e].retries <= 0)
{
RetryQueue.Remove(e);
}
}
else
{
RetryQueue.Add(e, new RetryWatch(sender, e));
}
}
RetryTimer.Enabled = true;
}
