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Message Queuing(MSMQ)学习之旅(2)

发布时间: 2013-03-21 10:08:17 作者: rapoo

Message Queuing(MSMQ)学习之旅(二)——创建Queue
1.前言
应用程序创建的Queue根据你是否希望被其他程序找到可分为Public Queue和Private Queue,Public Queue会在directory service中注册,有利于长时间的使用。Private Queue在本机注册,而不在directory service中注册,它一般通过在%windir%\System32\MSMQ\Storage\Lqs下存储相应的描叙文件来注册。注册在本机中的Public Queue也会在Lqs目录下存储相应的描述文件。建立Private Queue更快,能在directory service不工作的时候正常工作。
另外按照可以接收的Message类型可分为Transactional Queue和Nontransactional Queue,这个以后再详述。

2.创建Public Nontransactional Queue

HRESULT CreatePublicNontranMSMQQueue(                        LPWSTR wszPathName,                         LPWSTR wszOutFormatName,                        DWORD *pdwOutFormatNameLength                        ){  // Validate the input parameters.  if (wszPathName == NULL || wszOutFormatName == NULL || pdwOutFormatNameLength == NULL)  {    return MQ_ERROR_INVALID_PARAMETER;  }  // Define the maximum number of queue properties.  const int NUMBEROFPROPERTIES = 11;  // Define a queue property structure and the structures needed to initialize it.  MQQUEUEPROPS   QueueProps;  MQPROPVARIANT  aQueuePropVar[NUMBEROFPROPERTIES];  QUEUEPROPID    aQueuePropId[NUMBEROFPROPERTIES];  HRESULT        aQueueStatus[NUMBEROFPROPERTIES];  HRESULT        hr = MQ_OK;    // Set queue path.  DWORD cPropId = 0;  aQueuePropId[cPropId] = PROPID_Q_PATHNAME;  aQueuePropVar[cPropId].vt = VT_LPWSTR;  aQueuePropVar[cPropId].pwszVal = wszPathName;  cPropId++;  // Set queue label.  WCHAR wszLabel[MQ_MAX_Q_LABEL_LEN] = L"public non tran";  aQueuePropId[cPropId] = PROPID_Q_LABEL;  aQueuePropVar[cPropId].vt = VT_LPWSTR;  aQueuePropVar[cPropId].pwszVal = wszLabel;  cPropId++;  // Set queue authenticate.  aQueuePropId[cPropId] = PROPID_Q_AUTHENTICATE;  aQueuePropVar[cPropId].vt = VT_UI1;  aQueuePropVar[cPropId].bVal = //MQ_AUTHENTICATE_NONE;//The default. The queue accepts authenticated and non-authenticated messages.MQ_AUTHENTICATE; //The queue only accepts authenticated messages.  cPropId++;  // Set queue base priority. Applies only to public queues.  aQueuePropId[cPropId] = PROPID_Q_BASEPRIORITY;  aQueuePropVar[cPropId].vt = VT_I2;  aQueuePropVar[cPropId].iVal = 1; //default is 0  cPropId++;  // Set queue privacy level.  aQueuePropId[cPropId] = PROPID_Q_PRIV_LEVEL;  aQueuePropVar[cPropId].vt = VT_UI4;  aQueuePropVar[cPropId].ulVal = //MQ_PRIV_LEVEL_NONE;//The queue accepts only non-private (clear) messages. MQ_PRIV_LEVEL_BODY;//The queue accepts only private (encrypted) messages. //MQ_PRIV_LEVEL_OPTIONAL;//The default. The queue does not enforce privacy. It accepts private (encrypted) messages and non-private (clear) messages.  cPropId++;  // Set queue journal.  aQueuePropId[cPropId] = PROPID_Q_JOURNAL;  aQueuePropVar[cPropId].vt = VT_UI1;  aQueuePropVar[cPropId].bVal = MQ_JOURNAL;//MQ_JOURNAL_NONE;  cPropId++;  // Set queue storage size in KB.  aQueuePropId[cPropId] = PROPID_Q_QUOTA;  aQueuePropVar[cPropId].vt = VT_UI4;  aQueuePropVar[cPropId].ulVal = 1000;  cPropId++;  // Set queue journal storage size in KB.  aQueuePropId[cPropId] = PROPID_Q_JOURNAL_QUOTA;  aQueuePropVar[cPropId].vt = VT_UI4;  aQueuePropVar[cPropId].ulVal = 1000;  cPropId++;   //set broadcast address, not set for transactional queues.   WCHAR AddressBuffer[]=L"224.0.0.255:80";   aQueuePropId[cPropId] = PROPID_Q_MULTICAST_ADDRESS;       aQueuePropVar[cPropId].vt = VT_LPWSTR; //VT_EMPTY if not set.                 aQueuePropVar[cPropId].pwszVal = AddressBuffer;          cPropId++;  // set if the queue is transactional queue  aQueuePropId[cPropId] = PROPID_Q_TRANSACTION;      aQueuePropVar[cPropId].vt = VT_UI1;              aQueuePropVar[cPropId].bVal = //MQ_TRANSACTIONAL; MQ_TRANSACTIONAL_NONE;  cPropId++;  aQueuePropId[cPropId] = PROPID_Q_TYPE;                  aQueuePropVar[cPropId].vt = VT_CLSID;                aQueuePropVar[cPropId].puuid = (CLSID*)(&GUID_NULL);   cPropId++;  // Initialize the MQQUEUEPROPS structure.  QueueProps.cProp = cPropId;               // Number of properties  QueueProps.aPropID = aQueuePropId;        // IDs of the queue properties  QueueProps.aPropVar = aQueuePropVar;      // Values of the queue properties  QueueProps.aStatus = aQueueStatus;        // Pointer to the return status  // Call MQCreateQueue to create the queue.  WCHAR wszFormatNameBuffer[BUFLEN];  DWORD dwFormatNameBufferLength = BUFLEN;  hr = MQCreateQueue(NULL,         // Security descriptor                     &QueueProps,                 // Address of queue property structure                     wszOutFormatName,         // Pointer to format name buffer                     pdwOutFormatNameLength);  // Pointer to receive the queue's format name length in Unicode characters not bytes.  return hr;}


wchar_t formattedQueueName[256]; QUEUEHANDLE m_hQueue;CreatePublicNontranMSMQQueue(_T(".\\pubnontran"),formattedQueueName,&bufferLength);


3.创建Public transactional Queue

创建Public transactional Queue与Public non-transactional Queue相比,需要把PROPID_Q_TRANSACTION属性设置为MQ_TRANSACTIONAL,且不应设置PROPID_Q_MULTICAST_ADDRESS

   //set broadcast address, not set for transactional queues.   aQueuePropId[cPropId] = PROPID_Q_MULTICAST_ADDRESS;       aQueuePropVar[cPropId].vt = VT_EMPTY;   cPropId++;  // set if the queue is transactional queue  aQueuePropId[cPropId] = PROPID_Q_TRANSACTION;      aQueuePropVar[cPropId].vt = VT_UI1;              aQueuePropVar[cPropId].bVal = MQ_TRANSACTIONAL; //MQ_TRANSACTIONAL_NONE;  cPropId++;


4.创建Private Non-transactional Queue

创建Private Non-transactional Queue与Public Non-transactional Queue相比一个是对PROPID_Q_BASEPRIORITY属性的设置将无效。另一个就是pathname里面需要加private$符号来标明这是个private的Queue。

wchar_t formattedQueueName[256]; QUEUEHANDLE m_hQueue;CreatePrivateNontranMSMQQueue(_T(".\\private\\prinontran"),formattedQueueName,&bufferLength);

5.创建Private transactional Queue

创建方法参见2,3,4条。

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