/* Copyright (C) 2014 InfiniDB, Inc.

   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; version 2 of
   the License.

   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, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/******************************************************************************
 * $Id$
 *
 *****************************************************************************/

/** @file umsocketselector.cpp
 * Used in selecting "next" port when sending a response to a given IP address
 */

#include "umsocketselector.h"
#include <arpa/inet.h>
#include <iostream>
#include <sstream>
#include "inetstreamsocket.h"

#include "liboamcpp.h"

using namespace oam;

//------------------------------------------------------------------------------
// Test driver for UmSocketSelector
//------------------------------------------------------------------------------
using namespace primitiveprocessor;

int main()
{
  // Columnstore.xml file should be configured as follows:
  //   um1: 10.100.4.85 and 10.100.5.85
  //   um2: 10.101.4.85 and 10.101.5.85
  sockaddr_in sa = {1, 0, {0}, {' '}};
  char* ips[] = {"10.100.4.85", "10.100.5.85", "10.101.4.85", "10.101.5.85"};

  // These are the IP addresses we use to test runtime connections
  // "not" in the Columnstore.xml file.
  sockaddr_in saUnknown = {1, 0, {0}, {' '}};
  char* ipsUnknown[] = {"10.102.1.1", "10.102.2.1", "10.102.3.1", "10.102.4.1"};

  //--------------------------------------------------------------------------
  // Test initialization
  //--------------------------------------------------------------------------
  UmSocketSelector* sockSel = UmSocketSelector::instance();

  std::cout << "IPAddressCount: " << sockSel->ipAddressCount() << std::endl;
  std::cout << std::endl << "----Dump1 after initialization..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump1 End...................." << std::endl << std::endl;

  IOSocket sock[4][4];

  for (int i = 0; i < 4; i++)
  {
    inet_aton(ips[i], &sa.sin_addr);

    for (int j = 0; j < 4; j++)
    {
      sock[i][j].setSocketImpl(new InetStreamSocket());
      sa.sin_port = htons((i * 4) + j);
      sock[i][j].sa(sa);
      sockSel->addConnection(SP_UM_IOSOCK(new IOSocket(sock[i][j])), SP_UM_MUTEX(new boost::mutex()));
    }
  }

  std::cout << std::endl << "----Dump2 after adding 16 connections..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump2 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test socket/port selection
  //--------------------------------------------------------------------------
  std::cout << "Test socket/port selection logic..." << std::endl;

  for (unsigned k = 0; k < 17; k++)
  {
    SP_UM_IOSOCK outIos;
    SP_UM_MUTEX writeLock;
#if 1

    if (sockSel->nextIOSocket(sock[0][0], outIos, writeLock))
      std::cout << "next IP: " << inet_ntoa(outIos->sa().sin_addr)
                << "; port: " << ntohs(outIos->sa().sin_port) << std::endl;
    else
#else
    if (!sockSel->nextIOSocket(sock[0][0], outIos, writeLock))
#endif
      std::cout << "no nextIP found for " << sock[0][0] << std::endl;
  }

  for (unsigned k = 0; k < 7; k++)
  {
    SP_UM_IOSOCK outIos;
    SP_UM_MUTEX writeLock;

    if (sockSel->nextIOSocket(sock[2][0], outIos, writeLock))
      std::cout << "next IP: " << inet_ntoa(outIos->sa().sin_addr)
                << "; port: " << ntohs(outIos->sa().sin_port) << std::endl;
    else
      std::cout << "no nextIP found for " << sock[2][0] << std::endl;
  }

  std::cout << std::endl;
  std::cout << "----Dump3 after selecting 17 connections from IP " << ips[0] << "; and 7 connections from IP "
            << ips[2] << " ..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump3 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test connection deletions
  //--------------------------------------------------------------------------
  for (unsigned k = 0; k < 4; k++)
  {
    sockSel->delConnection(sock[k][0]);
  }

  std::cout << "----Dump4 after deleting first connection for each IP..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump4 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test addition of unknown connections
  //--------------------------------------------------------------------------
  IOSocket sockUnknown[4][4];

  for (int i = 0; i < 4; i++)
  {
    inet_aton(ipsUnknown[i], &saUnknown.sin_addr);

    for (int j = 0; j < 4; j++)
    {
      sockUnknown[i][j].setSocketImpl(new InetStreamSocket());
      saUnknown.sin_port = htons((i * 4) + j);
      sockUnknown[i][j].sa(saUnknown);
      sockSel->addConnection(SP_UM_IOSOCK(new IOSocket(sockUnknown[i][j])), SP_UM_MUTEX(new boost::mutex()));
    }
  }

  std::cout << "----Dump5 after adding connections for unknown IP's..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump5 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test resetting of "next" indexes after deleting all sockets from a
  // specific IP address for which the "next" index is pointing.
  //--------------------------------------------------------------------------
  sockSel->delConnection(sock[1][1]);
  sockSel->delConnection(sock[1][2]);
  sockSel->delConnection(sock[1][3]);

  std::cout << "----Dump6 after deleting all connections for IP " << ips[1] << " ..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump6 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test socket/port selection for an unknown module
  //--------------------------------------------------------------------------
  std::cout << "Test socket/port selection logic..." << std::endl;

  for (unsigned k = 0; k < 11; k++)
  {
    SP_UM_IOSOCK outIos;
    SP_UM_MUTEX writeLock;

    if (sockSel->nextIOSocket(sockUnknown[2][0], outIos, writeLock))
      std::cout << "next IP: " << inet_ntoa(outIos->sa().sin_addr)
                << "; port: " << ntohs(outIos->sa().sin_port) << std::endl;
    else
      std::cout << "no nextIP found for " << sockUnknown[2][0] << std::endl;
  }

  std::cout << std::endl;
  std::cout << "----Dump7 after selecting 11 connections for IP " << ipsUnknown[2] << " ..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump7 End...................." << std::endl << std::endl;

  //--------------------------------------------------------------------------
  // Test deletion of last socket/port connection and resetting if the
  // "next" index that is pointing to it.
  //--------------------------------------------------------------------------
  sockSel->delConnection(sock[3][3]);
  std::cout << "----Dump8 after deleting last connection for IP " << ips[3] << " ..." << std::endl;
  std::cout << sockSel->toString();
  std::cout << "----Dump8 End...................." << std::endl << std::endl;

  return 0;
}