/// <summary>
/// Returns number of journal message's deleted from queue
/// </summary>
/// <param name="queueName">System.String : queueName</param>
/// <returns></returns>
private int DeleteOldJournalMessage(string queueName)
{
int totalCount = 0;
try
{
queueName += ";JOURNAL";
using (TransactionScope transaction = new TransactionScope())
{
using (MessageQueue queue = new MessageQueue(queueName))
{
queue.Formatter = new BinaryMessageFormatter();
queue.MessageReadPropertyFilter.ArrivedTime = true;
using (MessageEnumerator messageReader = queue.GetMessageEnumerator2())
{
int JournalLogDays = Convert.ToInt32(ConfigurationManager.AppSettings["JournalLogDays"]);
while (messageReader.MoveNext())
{
Message message = messageReader.Current;
if (message.ArrivedTime.AddMinutes(JournalLogDays) < DateTime.Now)
{
queue.ReceiveById(message.Id);
totalCount++;
}
}
}
}
}
}
catch (Exception ex)
{
}
return(totalCount);
}
public Enumerator(Session session, MessageQueue messageQueue,
IMessageReader reader)
{
this.session = session;
this.innerEnumerator = messageQueue.GetMessageEnumerator2();
this.reader = reader;
}
private void PeekMessages()
{
try
{
using (MessageEnumerator messagesEnumerator = ordersQueue.GetMessageEnumerator2())
{
while (messagesEnumerator.MoveNext(TimeSpan.FromHours(3)))
{
var messageInfo = new MessageInfo
{
Id = messagesEnumerator.Current.Id,
Label = messagesEnumerator.Current.Label
};
ordersList.Add(messageInfo);
}
}
MessageBox.Show("No orders in the last 3 hours. Exiting thread",
"Course Order Receiver", MessageBoxButton.OK,
MessageBoxImage.Information);
}
catch (MessageQueueException ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
protected override void ReadAll()
{
using (MessageQueue queue = GetQueue())
{
using (MessageEnumerator enumerator = queue.GetMessageEnumerator2())
{
enumerator.Reset();
// Gather all messages.
var messages = new EventMessages();
while (enumerator.MoveNext())
{
if (RemoveWhenReading)
{
GetEventMessages(messages, enumerator.RemoveCurrent());
}
else
{
GetEventMessages(messages, enumerator.Current);
}
}
// Pass all of them on.
HandleEventMessages(messages);
}
}
}
public MessageEnumerator ReceiveAllMessages()
{
MessageQueue queue = null;
MessageEnumerator enumerator = null;
try
{
queue = new MessageQueue(_QueueInboxName);
//retrieve all messages from the queue
enumerator = (MessageEnumerator)(queue.GetEnumerator());
}
catch (Exception exception)
{
EventLog systemLog = new EventLog();
systemLog.Source = "IssueTracker";
systemLog.WriteEntry(exception.Message, EventLogEntryType.Error, 0);
}
finally
{
queue.Close();
}
return(enumerator);
}
// 从 MSMQ 队列中移走若干消息
// parameters:
public void RemoveMessage(int nCount)
{
if (nCount == 0)
{
return;
}
List <MessageData> results = new List <MessageData>();
TimeSpan timeout = new TimeSpan(0, 0, 1);
try
{
MessageEnumerator iterator = _queue.GetMessageEnumerator2();
int i = 0;
while (iterator.MoveNext(timeout))
{
if (i >= nCount)
{
break;
}
iterator.RemoveCurrent();
i++;
}
return;
}
catch (MessageQueueException ex)
{
this.App.WriteErrorLog("RemoveMessage(" + nCount + ") 出现异常: " + ExceptionUtil.GetDebugText(ex));
}
catch (Exception ex)
{
this.App.WriteErrorLog("RemoveMessage(" + nCount + ") 出现异常: " + ExceptionUtil.GetDebugText(ex));
}
}
public int GetQueeuElementsCount(string pQueuePach)
{
// Holds the count of Lowest priority messages.
int numberItems = 0;
// Connect to a queue.
MessageQueue myQueue = new MessageQueue(pQueuePach);
// Get a cursor into the messages in the queue.
MessageEnumerator myEnumerator = myQueue.GetMessageEnumerator();
// Specify that the messages's priority should be read.
myQueue.MessageReadPropertyFilter.Priority = true;
// Move to the next message and examine its priority.
while (myEnumerator.MoveNext())
{
// Increase the count if priority is Lowest.
if (myEnumerator.Current.Priority == MessagePriority.Lowest)
{
numberItems++;
}
}
return(numberItems);
}
public List <MessageModel> GetAllMessageByQueueName(string queuename)
{
var list = new List <MessageModel>();
_ClientQueue.Path = @".\private$\" + queuename;
MessageEnumerator enumerator = _ClientQueue.GetMessageEnumerator2();
List <Message> queueMessages = new List <Message>();
while (enumerator.MoveNext(new TimeSpan(0, 0, 1)))
{
queueMessages.Add(enumerator.Current);
Message message = _ClientQueue.ReceiveById(enumerator.Current.Id);
message.Formatter = new BinaryMessageFormatter();
try
{
list.Add(new MessageModel {
Label = message.Label, Body = message.Body, QueueName = queuename, IsSuccess = true
});
}
catch (Exception ex)
{
_ClientQueue.Send(message);
}
}
_ClientQueue.Close();
return(list);
}
private Task ProcessMessagesAsync(MessageEnumerator enumerator)
{
try
{
if (!enumerator.MoveNext(TimeSpan.FromMilliseconds(10)))
{
return(Task.CompletedTask);
}
}
catch (Exception exception)
{
Logger.Warn("MSMQ receive operation failed", exception);
return(Task.CompletedTask);
}
if (this.cancellationToken.IsCancellationRequested)
{
return(Task.CompletedTask);
}
var handlerTask = this.HandleMessageAsync();
this.handlerTasks.TryAdd(handlerTask, handlerTask);
return(handlerTask.ContinueWith(t =>
{
Task toBeRemoved;
this.handlerTasks.TryRemove(t, out toBeRemoved);
}, TaskContinuationOptions.ExecuteSynchronously));
}
/// <summary>
///
/// </summary>
public void StartInputProcessing()
{
SystemComponents.MSMQHandler mqHandler = new SystemComponents.MSMQHandler();
LogCons.Inst.Write(LogLevel.Fatal, "MSMQ is {0}installed", mqHandler.IsMSMQInstalled() == true ? string.Empty:"NOT ");
LogCons.Inst.Write(LogLevel.Fatal, "MSMQ is {0}running", mqHandler.IsMSMQRunning() == true ? string.Empty : "NOT ");
if (mqHandler.IsMSMQInstalled() == false)
{
mqHandler.Install();
}
stopThreads = false;
try
{
this.minaryQueue = new MessageQueue(_LOCAL_ENDPOINT);
this.minaryQueueEnumerator = this.minaryQueue.GetMessageEnumerator2();
this.processInputDataThread = new Thread(this.DataProcessingThread);
this.processInputDataThread.Start();
}
catch (Exception ex)
{
LogCons.Inst.Write(LogLevel.Fatal, $"An error occurred while starting the input processor MessageQueue : {ex.Message}\r\nStacktrace: {ex.StackTrace}");
var message = $"An error occurred while starting the input processor MessageQueue : {ex.Message}\r\n\r\nStacktrace: {ex.StackTrace}";
MessageDialog.Inst.ShowError(string.Empty, message, this.minaryMain);
}
}
private static void Main()
{
var queue = new MessageQueue(LocalPrivateQueue)
{
Formatter = new XmlMessageFormatter(new[]
{
typeof(string)
})
};
// Использование IEnumerable
foreach (Message message in queue)
{
Console.WriteLine(message);
}
// Использование перечислителя очереди
using (MessageEnumerator enumerator = queue.GetMessageEnumerator2())
{
while (enumerator.MoveNext(TimeSpan.FromMinutes(30))) // Время на ожидание сообщения
{
Message currentMessage = enumerator.Current;
if (currentMessage != null)
{
Console.WriteLine(currentMessage.Body);
}
}
}
}
//将消息队列中的邮件发送到邮箱中
private void btnAllSend_Click(object sender, EventArgs e)
{
string queuePath = @".\private$\lxfMail";
//List<MailInfo> listMail = QueueManger.GetAllMessage<MailInfo>(queuePath);
//foreach (MailInfo mi in listMail)
//{
// //MessageBox.Show(mi.Content);
// bool isPass = SendMail(mi);
// if (isPass == true)
// {
// }
//}
MessageQueue myQueue = new MessageQueue(queuePath);
myQueue.Formatter = new XmlMessageFormatter(new Type[] { typeof(MailInfo) });
MessageEnumerator enumerator = myQueue.GetMessageEnumerator2();
while (enumerator.MoveNext())
{
MailInfo mi = (MailInfo)enumerator.Current.Body;
bool isPass = SendMail(mi);
if (isPass == true)
{
//enumerator.RemoveCurrent();
myQueue.ReceiveById(enumerator.Current.Id);
}
MessageBox.Show(mi.Content);
}
}
private void PeekMessages()
{
try
{
using (MessageEnumerator messagesEnumerator = _ordersQueue.GetMessageEnumerator2())
{
while (messagesEnumerator.MoveNext(TimeSpan.FromHours(3)))
// NOTE: Если в течение 3-х часов сообщений не было, покидаем цикл
{
Message currentMessage = messagesEnumerator.Current;
if (currentMessage != null)
{
var messageInfo = new MessageInfo
{
Id = currentMessage.Id,
Label = currentMessage.Label
};
_ordersList.Add(messageInfo);
}
}
}
MessageBox.Show("No orders in the last 3 hours. Exiting thread", "Course Order Receiver",
MessageBoxButton.OK, MessageBoxImage.Information);
}
catch (MessageQueueException ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
//**************************************************
// Iterates through messages in a queue and examines
// their priority.
//**************************************************
public void CountLowestPriority()
{
// Holds the count of Lowest priority messages.
uint numberItems = 0;
// Connect to a queue.
MessageQueue myQueue = new MessageQueue(".\\myQueue");
// Get a cursor into the messages in the queue.
MessageEnumerator myEnumerator =
myQueue.GetMessageEnumerator();
// Specify that the messages's priority should be read.
myQueue.MessageReadPropertyFilter.Priority = true;
// Move to the next message and examine its priority.
while (myEnumerator.MoveNext())
{
// Increase the count if priority is Lowest.
if (myEnumerator.Current.Priority ==
MessagePriority.Lowest)
{
numberItems++;
}
}
// Display final count.
Console.WriteLine("Lowest priority messages: " +
numberItems.ToString());
return;
}
public GxQueueMessage GetFirst()
{
mEof = false;
mEnum = mq.GetMessageEnumerator();
return(GetNext());
}
public int ReadQueueSize(string refNum)
{
try
{
if (MessageQueue.Exists(@".\Private$\ScrapeSessionsQueue"))
{
MessageQueue mQ = new MessageQueue(@".\Private$\ScrapeSessionsQueue", false, true);
int messageCount = 0;
using (MessageEnumerator messageEnumerator = mQ.GetMessageEnumerator2())
{
while (messageEnumerator.MoveNext())
{
messageCount++;
}
}
return(messageCount);
}
return(0);
}
catch (Exception ex)
{
log.LogMessage(Enumeration.LoggingPriority.High, refNum, ex);
return(0);
}
}
public void Dispose()
{
if (innerEnumerator != null)
{
innerEnumerator.Close();
innerEnumerator = null;
}
}
protected virtual void ReceiveMessage(MessageEnumerator enumerator, TimeSpan timeout,
Action <Message> receiveAction)
{
using (Message message = enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.None))
{
receiveAction(message);
}
}
protected virtual void ReceiveMessage(MessageEnumerator enumerator, TimeSpan timeout, Action <Func <Message> > receiveAction)
{
receiveAction(() => enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.None));
// ADK - End Server PurePath Here
DynaTraceADKFactory.initialize();
Tagging adk = DynaTraceADKFactory.createTagging();
adk.endServerPurePath();
}
IEnumerator IEnumerable.GetEnumerator()
{
MessageEnumerator messageEnumerator = base.GetMessageEnumerator2();
while (messageEnumerator.MoveNext())
{
yield return(messageEnumerator.Current);
}
}
private static bool MoveToNextMessage(MessageQueue queue, MessageEnumerator enumerator, bool firstMessage, ref bool current)
{
// This function effectively replaces MessageEnumerator.MoveNext(). The problem with that function is
// that once it reaches the end of the queue it closes the cursor, so the next call to MoveNext()
// starts from the start again whereas we want to keep trying to retrieve the next message when it
// arrives.
// When moving to the very first message call MoveNext() on the enumerator, so that it updates its
// own internal state. Afterwards manually check for the next message (which will advance the cursor,
// so there's no need to call MoveNext()). When we reach the end of the queue (IOTimeout is returned) the
// cursor is positioned PAST the last message, so next time we need to read the CURRENT message, not
// the next one (current is set to true). Once a new message arrives in the queue read the NEXT
// message (current is set to false).
Debug.Assert(queue != null && enumerator != null, "queue != null && enumerator != null");
if (firstMessage)
{
try
{
return(enumerator.MoveNext());
}
catch (MessageQueueException ex)
{
if ((uint)ex.MessageQueueErrorCode == 0x80070005)
{
throw new ApplicationException(string.Format("Access is denied to queue '{0}'."
+ " Ensure that you have 'Receive Message' permissions for the queue.",
queue.FormatName), ex);
}
throw new ApplicationException(string.Format("Failed to read from queue '{0}'.",
queue.FormatName), ex);
}
}
int action = (current ? NativeMethods.MQ_ACTION_PEEK_CURRENT : NativeMethods.MQ_ACTION_PEEK_NEXT);
int hr = UnsafeNativeMethods.MQReceiveMessage(queue.ReadHandle, 0, action, IntPtr.Zero,
IntPtr.Zero, IntPtr.Zero, enumerator.CursorHandle, IntPtr.Zero);
switch (hr)
{
case NativeMethods.MQ_OK:
current = false;
return(true);
case (int)MessageQueueErrorCode.IOTimeout:
current = true;
return(false); // No more messages.
default:
Debug.WriteLine("MQReceiveMessage returned " + ((MessageQueueErrorCode)hr));
return(false);
}
}
private int GetMessageCount(MessageQueue m)
{
Int32 count = 0;
MessageEnumerator msgEnum = m.GetMessageEnumerator2();
while (msgEnum.MoveNext(new TimeSpan(0, 0, 0)))
{
count++;
}
return(count);
}
/*
* Function: GetMessageCount
*
* Description: Gets the amount of messages that are within the message queue
*
* Parameters: MessageQueue m
*
* Returns: void
*/
private int GetMessageCount(MessageQueue m)
{
Int32 count = 0;
//Increments the counter based on the number of items
MessageEnumerator msgEnum = m.GetMessageEnumerator2();
while (msgEnum.MoveNext(new TimeSpan(0, 0, 0)))
{
count++;
}
return(count);
}
private int GetQueueDepth(MessageQueue mq)
{
int count = 0;
MessageEnumerator enumerator = mq.GetMessageEnumerator2();
while (enumerator.MoveNext())
{
count++;
}
return(count);
}
public string ReceiveMessages(string companyCode, string retailID, string terminalID)
{
//WILL REMOVE FROM QUEUE
string str_foldername = companyCode + "_" + retailID.PadLeft(3, '0') + "_" + terminalID.PadLeft(2, '0') + "_out";
string queueName = @".\private$\" + str_foldername;
string result = "Finished";
//Receiving Messages from MSMQ
MessageQueue messageQueue = new MessageQueue(queueName);
messageQueue.DefaultPropertiesToSend.Recoverable = true;
messageQueue.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
//To keep a check that if no messages present in MSMQ,
//control should return back in 1 second.
TimeSpan timeout = new TimeSpan(5);
System.Messaging.Message message = null;
//Get all the messages present in the MSMQ and iterate through it.
MessageEnumerator enumerator = messageQueue.GetMessageEnumerator2();
int i = 0;
while (enumerator.MoveNext(timeout) && i < 100)
{
message = enumerator.RemoveCurrent(timeout);
if (message != null)
{
string str_backupfoldername = companyCode + "_" + retailID.PadLeft(3, '0') + "_" + terminalID.PadLeft(2, '0') + "_backup";
string path_backupqueue = @".\private$\" + str_backupfoldername;
createMsmqQueue(path_backupqueue);
MessageQueue myBackupQueue = new MessageQueue(path_backupqueue);
myBackupQueue.DefaultPropertiesToSend.Recoverable = true;
System.Messaging.Message myBackupMessage = new System.Messaging.Message();
string tablename;
XmlMessageFormatter formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
message.Formatter = formatter;
string context = message.Body.ToString();
if (context != null && context.Length > 0)
{
myBackupMessage.Label = "Generate_Server_" + message.Label;
myBackupMessage.Body = message.Body;
myBackupQueue.Send(myBackupMessage);
}
}
enumerator.Reset();
i++;
}
return(result);
}
protected override void ReceiveMessage(MessageEnumerator enumerator, TimeSpan timeout, Action <Func <Message> > receiveAction)
{
receiveAction(() =>
{
if (_log.IsDebugEnabled)
{
_log.DebugFormat("Removing message {0} from queue {1}", enumerator.Current.Id, Address);
}
return(enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.Automatic));
});
}
public void MQPoller()
{
bool msgsent;
while (true)
{
Thread.Sleep(ThePollingInterval);
try
{
#region traverse the messages in queue and transmit them !
qLock = new Object();
lock (qLock)
{
try
{
MessageQueue queue = new MessageQueue(@".\private$\shadow");
if (queue.CanRead) // can we read ?
{
MessageEnumerator me = queue.GetMessageEnumerator2();
me.Reset();
while (me.MoveNext()) // flush awayyy.....
{
System.Messaging.Message msg = queue.Receive();
msg.Formatter = new BinaryMessageFormatter();
// TRANSMIT
#region traverse clients hashtable and broadcast mq contents to all of them
foreach (int k in htSocketList.Keys)
{
//MessageBox.Show(msg.Body.ToString());
Thread.Sleep(100);
msgsent = SendBytesToClient(ccmd.BroadcastText(msg.Label + "|" + msg.Body, Convert.ToString(k)), ((ServerSocketPacket)htSocketList[k]).m_clientNumber, ((ServerSocketPacket)htSocketList[k]).m_clientId);
}
#endregion
}
}
queue.Close();
queue = null;
}
catch (Exception ex)
{
//MessageBox.Show("Error Transmitting:"+ex.Message);
}
}
qLock = null;
#endregion
}
catch (Exception ex)
{
//MessageBox.Show("Error Traversing clients:"+ex.Message);
}
}
}
//获取指定消息队列的长度
public static int GetQueueLen(string strPath)
{
MessageQueue mq = new MessageQueue(strPath, false);
int iNum = 0;
MessageEnumerator msgEnum = mq.GetMessageEnumerator2();
mq.Close();
while (msgEnum.MoveNext())
{
iNum++;
}
return(iNum);
}
public IEnumerable <MessageDelivery> ListMessages()
{
if (_disposed)
{
throw new ObjectDisposedException("MsmqMessageDeliveryQueue");
}
MessageEnumerator enumerator = _queue.GetMessageEnumerator2();
while (enumerator.MoveNext())
{
yield return(createObject(enumerator.Current));
}
}
public static SqlInt32 CountMessageOnQue(SqlString queueName)
{
CreateIfNotExists(queueName.Value);
MessageQueue messageQueue = new MessageQueue(queueName.Value, QueueAccessMode.SendAndReceive);
MessageEnumerator messageEnumerator = messageQueue.GetMessageEnumerator2();
int i = 0;
while (messageEnumerator.MoveNext())
{
i++;
}
return(new SqlInt32(i));
}
