Bachelorarbeit/ConditionMonitoring/NetServer.cpp

#include "NetServer.h"
#include <easylogging++.h>
#include "DataModel.h"

void NetServer::Stop()
{
    net::ServerInterface<net::MessageTypes>::Stop();
    LOG(INFO) << "[SERVER] Stopped Server";
    serverRunning = false;
}

bool NetServer::Start()
{
    if(serverRunning){
        LOG(WARNING) << "[SERVER] tried to start ip tcp server, but it is already running";
        return true;
    }

    bool res = net::ServerInterface<net::MessageTypes>::Start();
    if(res){
        LOG(INFO) << "[SERVER] Started Server";
        serverRunning = true;
        return res;
    }
    LOG(ERROR) << "[SERVER] Couldn't start Server";
    serverRunning = false;
    return res;
}

bool NetServer::OnClientConnect(std::shared_ptr<net::Connection<net::MessageTypes>> client)
{
    //Decide whether to accept or deny connection (always accept in this case)
	net::Message<net::MessageTypes> msg;
	msg.header.id = net::MessageTypes::ServerAccept;
	client->Send(msg);
	return true;
}


// Called when a client appears to have disconnected
void NetServer::OnClientDisconnect(std::shared_ptr<net::Connection<net::MessageTypes>> client)
{
    LOG(INFO) << "Removing client [" << client->GetID() << "]";
}


// Called when a message arrives
void NetServer::OnMessage(std::shared_ptr<net::Connection<net::MessageTypes>> client, net::Message<net::MessageTypes>& msgRcv)
{
	net::Message<net::MessageTypes> msgSend;
	std::stringstream body;

	switch (msgRcv.header.id)
	{
	case net::MessageTypes::ServerData:
        LOG(INFO) << "[Client " << client->GetID() << "]: Request Server Data";
		msgSend.header.id = net::MessageTypes::ServerData;
		getBodyData(body);
		msgSend << body.str();
		client->Send(msgSend);
		break;
	case net::MessageTypes::ServerCondition:
        LOG(INFO) << "[Client " << client->GetID() << "]: Request temporary Condition Data";
        msgSend.header.id = net::MessageTypes::ServerCondition;
        getBodyCondition(body);
        msgSend << body.str();
		client->Send(msgSend);
		break;
	case net::MessageTypes::ServerAlert:
        LOG(INFO) << "[Client " << client->GetID() << "]: Request Alert Data";
        msgSend.header.id = net::MessageTypes::ServerAlert;
		client->Send(msgSend);
		break;
	case net::MessageTypes::ServerLog:
        LOG(INFO) << "[Client " << client->GetID() << "]: Request Log Files";
		msgSend.header.id = net::MessageTypes::ServerLog;
        getBodyLog(body, msgRcv);
		msgSend << body.str();
		client->Send(msgSend);
		break;
	case net::MessageTypes::ServerCloseConnection:
        LOG(INFO) << "[Client " << client->GetID() << "]: Request disconnection";
		client->Disconnect();
		break;

	default:
        LOG(ERROR) << "[Client " << client->GetID() << "]: Invaild reuqest code";
		break;
    }
}

void NetServer::notifyAllConnections(net::Message<net::MessageTypes> &message)
{
    LOG(INFO) << "Sent broadcast to ";
    unsigned int counter = 0;
    //Send message to all listed active connections
    for(auto &connection: m_deqConnections){
        connection->Send(message);
        counter++;
    }
    LOG(INFO) << "Sent broadcast to " << counter << " devices";
}


std::stringstream& NetServer::getBodyData(std::stringstream& buffer)
{
    DataModel::Instance()->readAllDataFiles(buffer);
    DataModel::Instance()->readPermanentData(buffer, false);
	return buffer;
}

std::stringstream& NetServer::getBodyLog(std::stringstream& buffer, net::Message<net::MessageTypes> msgRcv)
{
	unsigned long long fromTime;
	if (msgRcv.header.size == 0)
		fromTime = 0;
	else
		msgRcv >> fromTime;
	DataModel::Instance()->readLogFile(buffer, fromTime);
	return buffer;
}

std::stringstream& NetServer::getBodyCondition(std::stringstream& buffer)
{
    DataModel::Instance()->readTemporaryData(buffer);
	return buffer;
}