public static Message TransactionalRemoveCurrent(this MessageEnumerator self)
{
if (Transaction.Current != null)
{
return(self.RemoveCurrent(MessageQueueTransactionType.Automatic));
}
var mqt = MsmqTransactionStrategy.Current;
if (mqt != null)
{
return(self.RemoveCurrent(mqt));
}
return(self.RemoveCurrent(MessageQueueTransactionType.Single));
}
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);
}
}
}
// 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));
}
}
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();
}
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 object[] PickMessage(string fromQueue)
{
using (var queue = new MessageQueue(fromQueue))
{
using (MessageEnumerator messageEnumerator2 = queue.GetMessageEnumerator2())
{
if (!messageEnumerator2.MoveNext())
{
return(null);
}
Message current = messageEnumerator2.Current;
messageEnumerator2.RemoveCurrent();
return(DeserializeMessage(current));
}
}
}
protected override void ReceiveMessage(MessageEnumerator enumerator, TimeSpan timeout,
Action <Message> receiveAction)
{
var options = new TransactionOptions
{
IsolationLevel = _isolationLevel,
Timeout = _transactionTimeout,
};
using (var scope = new TransactionScope(TransactionScopeOption.Required, options))
{
using (Message message = enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.Automatic))
{
receiveAction(message);
}
scope.Complete();
}
}
public void Ids()
{
Message once;
Message twice;
using (MessageEnumerator enumerator = _queue.GetMessageEnumerator2())
{
if (enumerator.MoveNext())
{
once = enumerator.Current;
enumerator.MoveNext();
twice = enumerator.RemoveCurrent();
Assert.AreNotSame(once.Id, twice.Id);
var b = twice.BodyType;
}
enumerator.Close();
}
}
public List <string> GetMessage()
{
try
{
MessageQueue myQueue = new MessageQueue(Path);
myQueue.Formatter = new XmlMessageFormatter(new Type[] { typeof(string) });
MessageEnumerator me = myQueue.GetMessageEnumerator2();
string msg = string.Empty;
List <string> msgs = new List <string>();
while (me.MoveNext())
{
msg = me.RemoveCurrent().Body.ToString();
msgs.Add(msg);
}
return(msgs);
}
catch (Exception ex)
{
return(null);
}
}
public void The_enumerator_should_skip_over_messages_that_are_being_processed()
{
TimeSpan timeout = 10.Seconds();
using (MessageEnumerator enumerator = _queue.GetMessageEnumerator2())
{
while (enumerator.MoveNext(timeout))
{
using (TransactionScope scope = new TransactionScope())
{
Message received = enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.Automatic);
Assert.IsNotNull(received);
Assert.AreEqual(received.Label, _firstMsg.Label);
using (MessageEnumerator enumerator2 = _queue.GetMessageEnumerator2())
{
while (enumerator2.MoveNext(timeout))
{
using (TransactionScope scope2 = new TransactionScope(TransactionScopeOption.RequiresNew))
{
Message received2 = enumerator2.RemoveCurrent(timeout, MessageQueueTransactionType.Automatic);
Assert.IsNotNull(received2);
Assert.AreEqual(received2.Label, _secondMsg.Label);
scope2.Complete();
}
}
}
scope.Complete();
}
}
}
}
public void RemoveMessageWithTimeout()
{
SendMessage("message 1");
SendMessage("message 2");
SendMessage("message 3");
SendMessage("message 4");
MessageQueue mq0 = MQUtil.GetQueue(qName);
MessageEnumerator me0 = mq0.GetMessageEnumerator();
TimeSpan ts = new TimeSpan(0, 0, 2);
me0.MoveNext(ts);
me0.MoveNext(ts);
me0.MoveNext(ts);
Message m0 = me0.RemoveCurrent(ts);
me0.MoveNext(ts);
me0.Dispose();
mq0.Dispose();
MessageQueue mq1 = MQUtil.GetQueue(qName);
MessageEnumerator me1 = mq1.GetMessageEnumerator();
me1.MoveNext(ts);
me1.MoveNext(ts);
me1.MoveNext(ts);
Message m1 = me1.Current;
m1.Formatter = new BinaryMessageFormatter();
Assert.AreEqual("message 4", (String)m1.Body, "body incorrect");
mq1.Purge();
MessageQueue.Delete(qName);
}
public void Execute(IJobExecutionContext context)
{
try
{
var path = $"{jsonFolder}\\statis.json";
// 统计数据json读成对象，计算后再json写回源文件
List <UserBehaviorStatis> statis = JsonConvert.DeserializeObject <List <UserBehaviorStatis> >(File.ReadAllText(path, Encoding.UTF8));
// Get a cursor into the messages in the queue.
MessageEnumerator myEnumerator = mq.GetMessageEnumerator2();
// Specify that the messages's priority should be read.
mq.MessageReadPropertyFilter.Priority = true;
while (myEnumerator.MoveNext())
{
Message msg = myEnumerator.Current;
msg.Formatter = formatter;
string str = msg.Body.ToString();
File.AppendAllText($"{jsonFolder}\\mq.txt", str + "\r\n", Encoding.UTF8);
mqType type = (mqType)Enum.Parse(typeof(mqType), str.Substring(0, 1));
string body = str.Substring(2);
statis.Find(s => s.Type == type).Count++;
myEnumerator.RemoveCurrent();
myEnumerator.Reset();
}
File.WriteAllText(path, JsonConvert.SerializeObject(statis));
}
catch (Exception ex)
{
File.AppendAllText($"{jsonFolder}\\log.txt", ex.Message + "\r\n", Encoding.UTF8);
}
finally
{
File.AppendAllText($"{jsonFolder}\\log.txt", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "执行完毕\r\n", Encoding.UTF8);
}
}
public GxQueueMessage GetNext()
{
GxQueueMessage gxm = new GxQueueMessage();
bool messageExist = false;
bool validMessage = false;
while (!validMessage)
{
try
{
messageExist = mEnum.MoveNext();
if (messageExist)
{
Message m = (Message)(mEnum.Current);
gxm.SetBaseMessage(m);
validMessage = testMessage(gxm);
if (validMessage && !browse)
{
mEnum.RemoveCurrent();
}
}
else
{
validMessage = true;
}
}
catch (MessageQueueException mex)
{
errCode = 1;
errDescription = mex.Message;
messageExist = false;
validMessage = true;
}
}
mEof = !messageExist;
return(gxm);
}
//[Test]
// Not supported with AMQP
public void RemoveMessageWithTx()
{
MessageQueue q = MQUtil.GetQueue(qName);
q.Formatter = new BinaryMessageFormatter();
q.Send("foo1");
q.Send("foo2");
MessageEnumerator me1 = q.GetMessageEnumerator();
MessageQueueTransaction tx = new MessageQueueTransaction();
me1.MoveNext();
Message m1 = me1.Current;
me1.RemoveCurrent(tx);
tx.Commit();
me1.Close();
MessageEnumerator me2 = q.GetMessageEnumerator();
Assert.IsTrue(me1.MoveNext());
me2.RemoveCurrent();
Assert.IsFalse(me2.MoveNext());
}
protected virtual void ReceiveMessage(MessageEnumerator enumerator, TimeSpan timeout, Action <Func <Message> > receiveAction)
{
receiveAction(() => enumerator.RemoveCurrent(timeout, MessageQueueTransactionType.None));
}
public void Notify()
{
// TODO: 要增加判断，防止过分频繁地被调用
this.MessageConnection.CleanWebDataTable();
if (this.dp2library.DefaultQueue == "!api")
{
try
{
if (this.MessageConnection.ConnectState != Microsoft.AspNet.SignalR.Client.ConnectionState.Connected)
{
return;
}
MessageData[] messages = null;
string strError = "";
int nRet = this.MessageConnection.GetMsmqMessage(
out messages,
out strError);
if (nRet == -1)
{
this.WriteErrorLog("Instance.Notify() 中 GetMsmqMessage() 出错: " + strError);
return;
}
if (messages != null)
{
foreach (MessageData data in messages)
{
MessageRecord record = new MessageRecord();
record.groups = new string[1] {
"gn:_patronNotify"
}; // gn 表示 group name
record.data = (string)data.strBody;
record.format = "xml";
List <MessageRecord> records = new List <MessageRecord> {
record
};
DigitalPlatform.Message.SetMessageRequest param =
new DigitalPlatform.Message.SetMessageRequest("create",
"dontNotifyMe",
records);
SetMessageResult result = this.MessageConnection.SetMessageTaskAsync(param,
_cancel.Token).Result;
if (result.Value == -1)
{
this.WriteErrorLog("Instance.Notify() 中 SetMessageAsync() 出错: " + result.ErrorInfo);
return;
}
}
nRet = this.MessageConnection.RemoveMsmqMessage(
messages.Length,
out strError);
if (nRet == -1)
{
this.WriteErrorLog("Instance.Notify() 中 RemoveMsmqMessage() 出错: " + strError);
return;
}
}
this._notifyThread.Activate();
return;
}
catch (ThreadAbortException)
{
return;
}
catch (Exception ex)
{
this.WriteErrorLog("Instance.Notify() 出现异常1: " + ExceptionUtil.GetDebugText(ex));
}
}
// 如果第一次初始化 Queue 没有成功，这里再试探初始化
InitialQueue(false);
// 进行通知处理
if (_queue != null &&
this.MessageConnection.ConnectState == Microsoft.AspNet.SignalR.Client.ConnectionState.Connected)
{
try
{
ServerInfo._recordLocks.LockForWrite(this._queue.Path);
}
catch (ApplicationException)
{
// 超时了
return;
}
bool bSucceed = false;
try
{
MessageEnumerator iterator = _queue.GetMessageEnumerator2();
while (iterator.MoveNext())
{
Message message = iterator.Current;
MessageRecord record = new MessageRecord();
record.groups = new string[1] {
"gn:_patronNotify"
}; // gn 表示 group name
record.data = (string)message.Body;
record.format = "xml";
List <MessageRecord> records = new List <MessageRecord> {
record
};
int length = record.data.Length;
DigitalPlatform.Message.SetMessageRequest param =
new DigitalPlatform.Message.SetMessageRequest("create",
"dontNotifyMe",
records);
SetMessageResult result = this.MessageConnection.SetMessageTaskAsync(param,
_cancel.Token).Result;
if (result.Value == -1)
{
this.WriteErrorLog("Instance.Notify() 中 SetMessageAsync() 出错: " + result.ErrorInfo);
if (result.String == "_connectionNotFound")
{
Task.Run(() => TryResetConnection(/*result.String*/));
}
return;
}
// http://stackoverflow.com/questions/21864043/with-messageenumerator-removecurrent-how-do-i-know-if-i-am-at-end-of-queue
try
{
iterator.RemoveCurrent();
}
finally
{
iterator.Reset();
}
}
bSucceed = true;
}
catch (ThreadAbortException)
{
return;
}
catch (MessageQueueException ex)
{
// 记入错误日志
// Program.WriteWindowsLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
this.WriteErrorLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
// Thread.Sleep(5 * 1000); // 拖延 5 秒
}
catch (InvalidCastException ex)
{
// 记入错误日志
// Program.WriteWindowsLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
this.WriteErrorLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
// Thread.Sleep(5 * 1000); // 拖延 5 秒
}
catch (Exception ex)
{
// 记入错误日志
// Program.WriteWindowsLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
this.WriteErrorLog("Instance.Notify() 出现异常: " + ExceptionUtil.GetDebugText(ex));
// Thread.Sleep(5 * 1000); // 拖延 5 秒
}
finally
{
ServerInfo._recordLocks.UnlockForWrite(this._queue.Path);
// 只有当发送到 dp2mserver 成功的情况下才立即重新监控最新 MQ
// 否则就等下一轮 Worker() 来处理
if (bSucceed == true)
{
// _queue.BeginPeek(new TimeSpan(0, 1, 0), null, OnMessageAdded);
BeginPeek();
}
}
}
}
