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/*
 * StatusRequestHandler.cpp
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "StatusRequestHandler.h"
#include "../SystemBackend.h"
#include "../Logger.h"
#include <Net/Connection.h>
#include <Net/Packets/ErrorPacket.h>
#include <Net/Packets/HostStatusPacket.h>

namespace Mad {
namespace Common {
namespace RequestHandlers {

void StatusRequestHandler::handlePacket(Net::Connection *con, const Net::Packet &packet) {
  if(packet.getType() != Net::Packet::STATUS) {
    Logger::log(Logger::ERROR, "Received an unexpected packet.");
    con->send(Net::Packets::ErrorPacket(Net::Packet::ERROR, packet.getRequestId(), Exception(Exception::UNEXPECTED_PACKET)));

    signalFinished().emit();
    return;
  }

  // TODO Require authentication

  connection = con;
  requestId = packet.getRequestId();

  if(!SystemBackend::getUptimeInfo(sigc::mem_fun(this, &StatusRequestHandler::uptimeHandler)))
    needUptime = false;
  if(!SystemBackend::getMemoryInfo(sigc::mem_fun(this, &StatusRequestHandler::memoryHandler)))
    needMemory = false;
  if(!SystemBackend::getLoadInfo(sigc::mem_fun(this, &StatusRequestHandler::loadHandler)))
    needLoad = false;

  send();
}

void StatusRequestHandler::send() {
  if(needUptime || needMemory || needLoad || sent)
    return;

  connection->send(Net::Packets::HostStatusPacket(Net::Packet::OK, requestId, uptime, idleTime,
      totalMem, freeMem, totalSwap, freeSwap, currentLoad, nProcesses, loadAvg1, loadAvg5, loadAvg15));

  sent = true;

  signalFinished().emit();
}

}
}
}