internal static bool GetExists(this PipeName pipeName)
{
if (pipeName.IsLocal())
{
string msmqPath = pipeName.GetMSMQPath();
return(MessageQueue.Exists(msmqPath));
}
string myMSMQFormatName = pipeName.GetMSMQDirectName();
MessageQueue[] queueList = MessageQueue.GetPrivateQueuesByMachine(pipeName.MachineName);
return(queueList.Select(messageQueue => messageQueue.FormatName).Any(curMSMQFormatName => String.Compare(myMSMQFormatName, curMSMQFormatName, true) == 0));
}
internal static uint Count(this PipeName pipeName)
{
MSMQExt.MQMGMTPROPS props = new MSMQExt.MQMGMTPROPS {
cProp = 1
};
try
{
props.aPropID = Marshal.AllocHGlobal(sizeof(int));
Marshal.WriteInt32(props.aPropID, (int)MSMQExt.MQMGMT_QUEUE_PROPERTIES.PROPID_MGMT_QUEUE_MESSAGE_COUNT);
// Marshal.SizeOf(typeof(MSMQExt.MQPROPVARIANT))
props.aPropVar = Marshal.AllocHGlobal(24);
Marshal.StructureToPtr(new MSMQExt.MQPROPVARIANT {
vt = MSMQExt.VT_NULL
}, props.aPropVar, false);
props.aStatus = Marshal.AllocHGlobal(sizeof(int));
Marshal.WriteInt32(props.aStatus, 0);
string machineName = (pipeName.IsLocal()) ? null : pipeName.MachineName;
string specialPath = "QUEUE=" + pipeName.GetMSMQDirectName();
int result = MSMQExt.MQMgmtGetInfo(machineName, specialPath, ref props);
if (result != 0 || Marshal.ReadInt32(props.aStatus) != 0)
{
return(0);
}
MSMQExt.MQPROPVARIANT propVar = (MSMQExt.MQPROPVARIANT)Marshal.PtrToStructure(props.aPropVar, typeof(MSMQExt.MQPROPVARIANT));
if (propVar.vt != MSMQExt.VT_UI4)
{
return(0);
}
else
{
return(propVar.Union1.ulVal);
}
}
finally
{
Marshal.FreeHGlobal(props.aPropID);
Marshal.FreeHGlobal(props.aPropVar);
Marshal.FreeHGlobal(props.aStatus);
}
}
