C++ Connection::IsRemoteConnection方法代码示例

/*************************************************************
* @brief	There should always be exactly one local connection
*			to us (the process that loaded us).
*************************************************************/
Connection* KernelSML::GetEmbeddedConnection()
{
	int index = 0 ;
	for (Connection* pConnection = m_pConnectionManager->GetConnectionByIndex(index) ; pConnection != NULL ; index++)
	{
		if (!pConnection->IsRemoteConnection())
			return pConnection ;
	}

	return NULL ;
}

bool RhsListener::ExecuteRhsCommand(AgentSML* pAgentSML, smlRhsEventId eventID, std::string const& functionName, std::string const& arguments, std::string* pResultStr)
{
	bool result = false ;

	// Get the list of connections (clients) who have registered to implement this right hand side (RHS) function.
	ConnectionList* pList = GetRhsListeners(functionName.c_str()) ;

	// If nobody is listening we're done (not a bug as we register for all rhs functions and only forward specific ones that the client has registered)
	if (!pList || pList->size() == 0)
		return result ;

	ConnectionListIter connectionIter = pList->begin() ;

	// We need the first connection for when we're building the message.  Perhaps this is a sign that
	// we shouldn't have rolled these methods into Connection.
	Connection* pConnection = *connectionIter ;

	// Convert eventID to a string
	char const* event = m_pKernelSML->ConvertEventToString(eventID) ;

	// Build the SML message we're doing to send.
	// Pass the agent in the "name" parameter not the "agent" parameter as this is a kernel
	// level event, not an agent level one (because you need to register with the kernel to get "agent created").
	soarxml::ElementXML* pMsg = pConnection->CreateSMLCommand(sml_Names::kCommand_Event) ;
	if (pAgentSML) pConnection->AddParameterToSMLCommand(pMsg, sml_Names::kParamName, pAgentSML->GetName()) ;
	pConnection->AddParameterToSMLCommand(pMsg, sml_Names::kParamEventID, event) ;
	pConnection->AddParameterToSMLCommand(pMsg, sml_Names::kParamFunction, functionName.c_str()) ;
	pConnection->AddParameterToSMLCommand(pMsg, sml_Names::kParamValue, arguments.c_str()) ;

#ifdef _DEBUG
	// Generate a text form of the XML so we can look at it in the debugger.
	char* pStr = pMsg->GenerateXMLString(true) ;
#endif

	AnalyzeXML response ;

	// We want to call embedded connections first, so that we get the best performance
	// for these functions.  I don't want to sort the list or otherwise change it so
	// instead we'll just use a rather clumsy outer loop to do this.
	for (int phase = 0 ; phase < 2 && !result ; phase++)
	{
		// Only call to embedded connections
		bool embeddedPhase = (phase == 0) ;

		// Reset the iterator to the beginning of the list
		connectionIter = pList->begin();

		// Keep looping until we get a result
		while (connectionIter != pList->end() && !result)
		{
			pConnection = *connectionIter ;

			// We call all embedded connections (same process) first before
			// trying any remote methods.  This ensures that if multiple folks register
			// for the same function we execute the fastest one (w/o going over a socket for the result).
			if (pConnection->IsRemoteConnection() && embeddedPhase)
			{
				connectionIter++ ;
				continue ;
			}

			// It would be faster to just send a message here without waiting for a response
			// but that could produce incorrect behavior if the client expects to act *during*
			// the event that we're notifying them about (e.g. notification that we're in the input phase).
			bool ok = pConnection->SendMessageGetResponse(&response, pMsg) ;

			if (ok)
			{
				char const* pResult = response.GetResultString() ;

				if (pResult != NULL)
				{
					(*pResultStr) = pResult ;
					result = true ;
				}
			}

			connectionIter++ ;
		}
	}

#ifdef _DEBUG
	// Release the string form we generated for the debugger
	pMsg->DeleteString(pStr) ;
#endif

	// Clean up
	delete pMsg ;

	return result ;
}