C++ LLPluginMessage::parse方法代码示例

// This the viewer process (the parent process).
//
// This function is called when a message is received from a plugin.
// It parses the message and passes it on to LLPluginProcessParent::receiveMessage.
void LLPluginProcessParent::receiveMessageRaw(const std::string &message)
{
    LL_DEBUGS("PluginRaw") << "Received: " << message << LL_ENDL;

    LLPluginMessage parsed;
    if(parsed.parse(message) != -1)
    {
        if(parsed.hasValue("blocking_request"))
        {
            mBlocked = true;
        }
        if(parsed.hasValue("perseus"))
        {
            mBlocked = false;

            // reset the heartbeat timer, since there will have been no heartbeats while the plugin was blocked.
            mHeartbeat.setTimerExpirySec(mPluginLockupTimeout);
        }

        if(mPolledInput)
        {
            // This is being called on the polling thread -- only do minimal processing/queueing.
            receiveMessageEarly(parsed);
        }
        else
        {
            // This is not being called on the polling thread -- do full message processing at this time.
            receiveMessage(parsed);
        }
    }
}

void LLPluginProcessParent::receiveMessageRaw(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received: " << message << LL_ENDL;

	// FIXME: should this go into a queue instead?
	
	LLPluginMessage parsed;
	if(parsed.parse(message) != -1)
	{
		receiveMessage(parsed);
	}
}

void LLPluginProcessParent::receiveMessageRaw(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received: " << message << LL_ENDL;
	
	LLPluginMessage parsed;
	if(LLSDParser::PARSE_FAILURE != parsed.parse(message))
	{
		if(parsed.hasValue("blocking_request"))
		{
			mBlocked = true;
		}

		if(mPolledInput)
		{
			// This is being called on the polling thread -- only do minimal processing/queueing.
			receiveMessageEarly(parsed);
		}
		else
		{
			// This is not being called on the polling thread -- do full message processing at this time.
			receiveMessage(parsed);
		}
	}
}

/* virtual */
void LLPluginProcessChild::receivePluginMessage(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL;
	
	if(mBlockingRequest)
	{
		// 
		LL_ERRS("Plugin") << "Can't send a message while already waiting on a blocking request -- aborting!" << LL_ENDL;
	}
	
	// Incoming message from the plugin instance
	bool passMessage = true;

	// FIXME: how should we handle queueing here?
	
	// Intercept certain base messages (responses to ones sent by this class)
	{
		// Decode this message
		LLPluginMessage parsed;
		parsed.parse(message);
		
		if(parsed.hasValue("blocking_request"))
		{
			mBlockingRequest = true;
		}

		std::string message_class = parsed.getClass();
		if(message_class == "base")
		{
			std::string message_name = parsed.getName();
			if(message_name == "init_response")
			{
				// The plugin has finished initializing.
				setState(STATE_RUNNING);

				// Don't pass this message up to the parent
				passMessage = false;
				
				LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response");
				LLSD versions = parsed.getValueLLSD("versions");
				new_message.setValueLLSD("versions", versions);
				
				if(parsed.hasValue("plugin_version"))
				{
					std::string plugin_version = parsed.getValue("plugin_version");
					new_message.setValueLLSD("plugin_version", plugin_version);
				}

				// Let the parent know it's loaded and initialized.
				sendMessageToParent(new_message);
			}
			else if(message_name == "shm_remove_response")
			{
				// Don't pass this message up to the parent
				passMessage = false;

				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);				
				if(iter != mSharedMemoryRegions.end())
				{
					// detach the shared memory region
					iter->second->detach();
					
					// and remove it from our map
					mSharedMemoryRegions.erase(iter);
					
					// Finally, send the response to the parent.
					LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response");
					message.setValue("name", name);
					sendMessageToParent(message);
				}
				else
				{
					LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL;
				}
			}
		}
		else if (message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
		{
			bool flush = false;
			std::string message_name = parsed.getName();
			if(message_name == "shutdown")
			{
				// The plugin is finished.
				setState(STATE_UNLOADING);
				flush = true;
			}
			else if (message_name == "flush")
			{
				flush = true;
				passMessage = false;
			}
			if (flush)
			{
				flushMessages();
			}
		}
	}
	
//.........这里部分代码省略.........

// This is the SLPlugin process (the child process).
// This is not part of a DSO.
//
// This function is called when the serialized message 'message' was received from the viewer.
// It parses the message and handles LLPLUGIN_MESSAGE_CLASS_INTERNAL.
// Other message classes are passed on to LLPluginInstance::sendMessage.
void LLPluginProcessChild::receiveMessageRaw(const std::string &message)
{
	// Incoming message from the TCP Socket

	LL_DEBUGS("Plugin") << "Received from parent: " << message << LL_ENDL;

	// Decode this message
	LLPluginMessage parsed;
	parsed.parse(message);

	if(mBlockingRequest)
	{
		// We're blocking the plugin waiting for a response.

		if(parsed.hasValue("blocking_response"))
		{
			// This is the message we've been waiting for -- fall through and send it immediately. 
			mBlockingResponseReceived = true;
		}
		else
		{
			// Still waiting.  Queue this message and don't process it yet.
			mMessageQueue.push(message);
			return;
		}
	}
	
	bool passMessage = true;
	
	// FIXME: how should we handle queueing here?
	
	{
		std::string message_class = parsed.getClass();
		if(message_class == LLPLUGIN_MESSAGE_CLASS_INTERNAL)
		{
			passMessage = false;
			
			std::string message_name = parsed.getName();
			if(message_name == "load_plugin")
			{
				mPluginFile = parsed.getValue("file");
				mPluginDir = parsed.getValue("dir");
			}
			else if(message_name == "shm_add")
			{
				std::string name = parsed.getValue("name");
				size_t size = (size_t)parsed.getValueS32("size");
				
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);
				if(iter != mSharedMemoryRegions.end())
				{
					// Need to remove the old region first
					LL_WARNS("Plugin") << "Adding a duplicate shared memory segment!" << LL_ENDL;
				}
				else
				{
					// This is a new region
					LLPluginSharedMemory *region = new LLPluginSharedMemory;
					if(region->attach(name, size))
					{
						mSharedMemoryRegions.insert(sharedMemoryRegionsType::value_type(name, region));
						
						std::stringstream addr;
						addr << region->getMappedAddress();
						
						// Send the add notification to the plugin
						LLPluginMessage message("base", "shm_added");
						message.setValue("name", name);
						message.setValueS32("size", (S32)size);
						message.setValuePointer("address", region->getMappedAddress());
						sendMessageToPlugin(message);
						
						// and send the response to the parent
						message.setMessage(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_add_response");
						message.setValue("name", name);
						sendMessageToParent(message);
					}
					else
					{
						LL_WARNS("Plugin") << "Couldn't create a shared memory segment!" << LL_ENDL;
						delete region;
					}
				}
				
			}
			else if(message_name == "shm_remove")
			{
				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);
				if(iter != mSharedMemoryRegions.end())
				{
					// forward the remove request to the plugin -- its response will trigger us to detach the segment.
					LLPluginMessage message("base", "shm_remove");
					message.setValue("name", name);
//.........这里部分代码省略.........

/* virtual */ 
void LLPluginProcessChild::receivePluginMessage(const std::string &message)
{
	LL_DEBUGS("Plugin") << "Received from plugin: " << message << LL_ENDL;

	// Incoming message from the plugin instance
	bool passMessage = true;

	// FIXME: how should we handle queueing here?
	
	// Intercept certain base messages (responses to ones sent by this class)
	{
		// Decode this message
		LLPluginMessage parsed;
		parsed.parse(message);
		std::string message_class = parsed.getClass();
		if(message_class == "base")
		{
			std::string message_name = parsed.getName();
			if(message_name == "init_response")
			{
				// The plugin has finished initializing.
				setState(STATE_RUNNING);

				// Don't pass this message up to the parent
				passMessage = false;
				
				LLPluginMessage new_message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "load_plugin_response");
				LLSD versions = parsed.getValueLLSD("versions");
				new_message.setValueLLSD("versions", versions);
				
				if(parsed.hasValue("plugin_version"))
				{
					std::string plugin_version = parsed.getValue("plugin_version");
					new_message.setValueLLSD("plugin_version", plugin_version);
				}

				// Let the parent know it's loaded and initialized.
				sendMessageToParent(new_message);
			}
			else if(message_name == "shm_remove_response")
			{
				// Don't pass this message up to the parent
				passMessage = false;

				std::string name = parsed.getValue("name");
				sharedMemoryRegionsType::iterator iter = mSharedMemoryRegions.find(name);				
				if(iter != mSharedMemoryRegions.end())
				{
					// detach the shared memory region
					iter->second->detach();
					
					// and remove it from our map
					mSharedMemoryRegions.erase(iter);
					
					// Finally, send the response to the parent.
					LLPluginMessage message(LLPLUGIN_MESSAGE_CLASS_INTERNAL, "shm_remove_response");
					message.setValue("name", name);
					sendMessageToParent(message);
				}
				else
				{
					LL_WARNS("Plugin") << "shm_remove_response for unknown memory segment!" << LL_ENDL;
				}
			}
		}
	}
	
	if(passMessage)
	{
		LL_DEBUGS("Plugin") << "Passing through to parent: " << message << LL_ENDL;
		writeMessageRaw(message);
	}
}