ircDDBGateway/Common/GatewayCache.cpp

/*
 *   Copyright (C) 2010,2011,2012,2020 by Jonathan Naylor G4KLX
 *
 *   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 2 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, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "GatewayCache.h"

#include "UDPReaderWriter.h"

const unsigned int CACHE_SIZE = 500U;

CGatewayCache::CGatewayCache() :
m_cache(CACHE_SIZE)
{
}

CGatewayCache::~CGatewayCache()
{
	for (CGatewayCache_t::iterator it = m_cache.begin(); it != m_cache.end(); ++it)
		delete it->second;
}

CGatewayRecord* CGatewayCache::find(const wxString& gateway)
{
	return m_cache[gateway];
}

void CGatewayCache::update(const wxString& gateway, const sockaddr_storage& addr, unsigned int addrLen, DSTAR_PROTOCOL protocol, bool addrLock, bool protoLock)
{
	CGatewayRecord* rec = m_cache[gateway];

	if (rec == NULL)
		// A brand new record is needed
		m_cache[gateway] = new CGatewayRecord(gateway, addr, addrLen, protocol, addrLock, protoLock);
	else
		// Update an existing record
		rec->setData(addr, addrLen, protocol, addrLock, protoLock);
}

void CGatewayCache::update(const wxString& gateway, const wxString& address, DSTAR_PROTOCOL protocol, bool addrLock, bool protoLock)
{
	CGatewayRecord* rec = m_cache[gateway];

	sockaddr_storage addr;
	unsigned int addrLen;
	
	switch (protocol) {
		case DP_LOOPBACK:
		case DP_DCS:
			CUDPReaderWriter::lookup(address, DCS_PORT, addr, addrLen);
			break;
		case DP_DPLUS:
			CUDPReaderWriter::lookup(address, DPLUS_PORT, addr, addrLen);
			break;
		case DP_DEXTRA:
			CUDPReaderWriter::lookup(address, DEXTRA_PORT, addr, addrLen);
			break;
		default:
			CUDPReaderWriter::lookup(address, G2_DV_PORT, addr, addrLen);
			break;
	}

	if (rec == NULL)
		// A brand new record is needed
		m_cache[gateway] = new CGatewayRecord(gateway, addr, addrLen, protocol, addrLock, protoLock);
	else
		// Update an existing record
		rec->setData(addr, addrLen, protocol, addrLock, protoLock);
}

unsigned int CGatewayCache::getCount() const
{
	return m_cache.size();
}