winix/winixd/db/dbconn.h

/*
 * This file is a part of Winix
 * and is distributed under the 2-Clause BSD licence.
 * Author: Tomasz Sowa <t.sowa@ttmath.org>
 */

/* 
 * Copyright (c) 2010-2018, Tomasz Sowa
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 */
 
#ifndef headerfile_winix_db_dbconn
#define headerfile_winix_db_dbconn

#include <string>
#include <libpq-fe.h>
#include "dbtextstream.h"
#include "core/winixbase.h"


namespace Winix
{



class DbConn : public WinixBase
{
public:

	DbConn();
	~DbConn();

	void SetConnParam(const std::wstring & conn_string);
	void SetConnParam(const std::wstring & host, const std::wstring & port, const std::wstring & database, const std::wstring & user, const std::wstring & pass);
	void Connect();
	void WaitForConnection();
	void Close();
	bool AssertConnection(bool put_log = true, bool throw_if_no_connection = true);
	void SetDbParameters();
	PGconn * GetPgConn();

private:

	void LogConnectionSocket();

	PGconn * pg_conn;
	std::wstring db_conn_string;
	std::wstring db_host, db_port, db_database, db_user, db_pass;
	DbTextStream conn_info;

	// a helper method for escaping strings
	template<class RawType>
	DbTextStream::RawText<RawType> R(const RawType & par)
	{
		return DbTextStream::RawText<RawType>(par);
	}
};


} // namespace Winix


#endif