108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2014, University in Hagen, Faculty of Mathematics and
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Computer Science, Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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Jan Kristof Nidzwetzki
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//paragraph [1] Title: [{\Large \bf \begin{center}] [\end{center}}]
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//paragraph [10] Footnote: [{\footnote{] [}}]
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//[TOC] [\tableofcontents]
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[TOC]
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0 Overview
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1 Includes and defines
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*/
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#include "CassandraConnectionPool.h"
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#include "CassandraAdapter.h"
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// Activate debug messages
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// #define __DEBUG__
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//namespace to avoid name conflicts
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namespace cassandra {
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// Global static pointer used to ensure a single instance of the class.
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CassandraConnectionPool* CassandraConnectionPool::instance = NULL;
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CassandraConnectionPool* CassandraConnectionPool::Instance() {
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if (!instance) {
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instance = new CassandraConnectionPool();
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}
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return instance;
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}
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void CassandraConnectionPool::destroy() {
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#ifdef __DEBUG__
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cout << "[ConnectionPool] Destory Pool called" << endl;
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#endif
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// Cleanup connections
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for(size_t i = 0; i < connections.size(); ++i) {
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CassandraConnection* connection = connections[i];
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delete connection;
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connections[i] = NULL;
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}
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connections.clear();
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}
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CassandraAdapter* CassandraConnectionPool::getConnection(
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string myHostname, string myKeyspace, bool mySingleNode) {
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#ifdef __DEBUG__
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cout << "[ConnectionPool] Get Connection called" << endl;
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#endif
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// Create connection object
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CassandraConnection* connection = new CassandraConnection(mySingleNode,
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myHostname, myKeyspace);
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for(size_t i = 0; i < connections.size(); ++i) {
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CassandraConnection* tryConnection = connections[i];
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if(*tryConnection == *connection) {
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cout << "[ConnectionPool] Connection found, reusing" << endl;
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delete connection;
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return tryConnection->getAdapter();
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}
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}
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#ifdef __DEBUG__
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cout << "[ConnectionPool] Create new Connection" << endl;
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#endif
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CassandraAdapter* adapter = new CassandraAdapter(myHostname, myKeyspace);
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adapter -> connect(mySingleNode);
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// Save connection
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connection -> setAdapter(adapter);
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connections.push_back(connection);
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return adapter;
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}
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}
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