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libreoffice/connectivity/source/cpool/ZConnectionPool.cxx

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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_connectivity.hxx"
#include <stdio.h>
#include "ZConnectionPool.hxx"
#include <com/sun/star/lang/XSingleServiceFactory.hpp>
#include <com/sun/star/container/ElementExistException.hpp>
#include <comphelper/extract.hxx>
#include <comphelper/types.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include "ZPooledConnection.hxx"
#include "ZPoolCollection.hxx"
#ifndef _CONNECTIVITY_CONNECTIONWRAPPER_HXX_
#include "connectivity/ConnectionWrapper.hxx"
#endif
#include <com/sun/star/beans/XPropertySet.hpp>
#ifndef _CONNECTIVITY_CONNECTIONWRAPPER_HXX_
#include "connectivity/ConnectionWrapper.hxx"
#endif
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::sdbc;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::container;
using namespace ::osl;
using namespace connectivity;
#include <algorithm>
//==========================================================================
//= OPoolTimer
//==========================================================================
void SAL_CALL OPoolTimer::onShot()
{
m_pPool->invalidatePooledConnections();
}
namespace
{
//--------------------------------------------------------------------
static const ::rtl::OUString& getTimeoutNodeName()
{
static ::rtl::OUString s_sNodeName = ::rtl::OUString::createFromAscii("Timeout");
return s_sNodeName;
}
}
//==========================================================================
//= OConnectionPool
//==========================================================================
//--------------------------------------------------------------------------
OConnectionPool::OConnectionPool(const Reference< XDriver >& _xDriver,
const Reference< XInterface >& _xDriverNode,
const Reference< ::com::sun::star::reflection::XProxyFactory >& _rxProxyFactory)
:m_xDriver(_xDriver)
,m_xDriverNode(_xDriverNode)
,m_xProxyFactory(_rxProxyFactory)
,m_nTimeOut(10)
,m_nALiveCount(10)
{
OSL_ENSURE(m_xDriverNode.is(),"NO valid Driver node set!");
Reference< XComponent > xComponent(m_xDriverNode, UNO_QUERY);
if (xComponent.is())
xComponent->addEventListener(this);
Reference<XPropertySet> xProp(m_xDriverNode,UNO_QUERY);
if(xProp.is())
xProp->addPropertyChangeListener(getTimeoutNodeName(),this);
OPoolCollection::getNodeValue(getTimeoutNodeName(),m_xDriverNode) >>= m_nALiveCount;
calculateTimeOuts();
m_xInvalidator = new OPoolTimer(this,::vos::TTimeValue(m_nTimeOut,0));
m_xInvalidator->start();
}
// -----------------------------------------------------------------------------
OConnectionPool::~OConnectionPool()
{
clear(sal_False);
}
// -----------------------------------------------------------------------------
struct TRemoveEventListenerFunctor : ::std::unary_function<TPooledConnections::value_type,void>
,::std::unary_function<TActiveConnectionMap::value_type,void>
{
OConnectionPool* m_pConnectionPool;
sal_Bool m_bDispose;
TRemoveEventListenerFunctor(OConnectionPool* _pConnectionPool,sal_Bool _bDispose = sal_False)
: m_pConnectionPool(_pConnectionPool)
,m_bDispose(_bDispose)
{
OSL_ENSURE(m_pConnectionPool,"No connection pool!");
}
// -----------------------------------------------------------------------------
void dispose(const Reference<XInterface>& _xComponent)
{
Reference< XComponent > xComponent(_xComponent, UNO_QUERY);
if ( xComponent.is() )
{
xComponent->removeEventListener(m_pConnectionPool);
if ( m_bDispose )
xComponent->dispose();
}
}
// -----------------------------------------------------------------------------
void operator()(const TPooledConnections::value_type& _aValue)
{
dispose(_aValue);
}
// -----------------------------------------------------------------------------
void operator()(const TActiveConnectionMap::value_type& _aValue)
{
dispose(_aValue.first);
}
};
// -----------------------------------------------------------------------------
struct TConnectionPoolFunctor : ::std::unary_function<TConnectionMap::value_type,void>
{
OConnectionPool* m_pConnectionPool;
TConnectionPoolFunctor(OConnectionPool* _pConnectionPool)
: m_pConnectionPool(_pConnectionPool)
{
OSL_ENSURE(m_pConnectionPool,"No connection pool!");
}
void operator()(const TConnectionMap::value_type& _aValue)
{
::std::for_each(_aValue.second.aConnections.begin(),_aValue.second.aConnections.end(),TRemoveEventListenerFunctor(m_pConnectionPool,sal_True));
}
};
// -----------------------------------------------------------------------------
void OConnectionPool::clear(sal_Bool _bDispose)
{
MutexGuard aGuard(m_aMutex);
if(m_xInvalidator->isTicking())
m_xInvalidator->stop();
::std::for_each(m_aPool.begin(),m_aPool.end(),TConnectionPoolFunctor(this));
m_aPool.clear();
::std::for_each(m_aActiveConnections.begin(),m_aActiveConnections.end(),TRemoveEventListenerFunctor(this,_bDispose));
m_aActiveConnections.clear();
Reference< XComponent > xComponent(m_xDriverNode, UNO_QUERY);
if (xComponent.is())
xComponent->removeEventListener(this);
Reference< XPropertySet > xProp(m_xDriverNode, UNO_QUERY);
if (xProp.is())
xProp->removePropertyChangeListener(getTimeoutNodeName(),this);
m_xDriverNode.clear();
m_xDriver.clear();
}
//--------------------------------------------------------------------------
Reference< XConnection > SAL_CALL OConnectionPool::getConnectionWithInfo( const ::rtl::OUString& _rURL, const Sequence< PropertyValue >& _rInfo ) throw(SQLException, RuntimeException)
{
MutexGuard aGuard(m_aMutex);
Reference<XConnection> xConnection;
// create a unique id and look for it in our map
Sequence< PropertyValue > aInfo(_rInfo);
TConnectionMap::key_type nId;
OConnectionWrapper::createUniqueId(_rURL,aInfo,nId.m_pBuffer);
TConnectionMap::iterator aIter = m_aPool.find(nId);
if ( m_aPool.end() != aIter )
xConnection = getPooledConnection(aIter);
if ( !xConnection.is() )
xConnection = createNewConnection(_rURL,_rInfo);
return xConnection;
}
//--------------------------------------------------------------------------
void SAL_CALL OConnectionPool::disposing( const ::com::sun::star::lang::EventObject& Source ) throw (RuntimeException)
{
Reference<XConnection> xConnection(Source.Source,UNO_QUERY);
if(xConnection.is())
{
MutexGuard aGuard(m_aMutex);
TActiveConnectionMap::iterator aIter = m_aActiveConnections.find(xConnection);
OSL_ENSURE(aIter != m_aActiveConnections.end(),"OConnectionPool::disposing: Conenction wasn't in pool");
if(aIter != m_aActiveConnections.end())
{ // move the pooled connection back to the pool
aIter->second.aPos->second.nALiveCount = m_nALiveCount;
aIter->second.aPos->second.aConnections.push_back(aIter->second.xPooledConnection);
m_aActiveConnections.erase(aIter);
}
}
else
{
m_xDriverNode.clear();
}
}
// -----------------------------------------------------------------------------
Reference< XConnection> OConnectionPool::createNewConnection(const ::rtl::OUString& _rURL,const Sequence< PropertyValue >& _rInfo)
{
// create new pooled conenction
Reference< XPooledConnection > xPooledConnection = new ::connectivity::OPooledConnection(m_xDriver->connect(_rURL,_rInfo),m_xProxyFactory);
// get the new connection from the pooled connection
Reference<XConnection> xConnection = xPooledConnection->getConnection();
if(xConnection.is())
{
// add our own as dispose listener to know when we should put the connection back to the pool
Reference< XComponent > xComponent(xConnection, UNO_QUERY);
if (xComponent.is())
xComponent->addEventListener(this);
// save some information to find the right pool later on
Sequence< PropertyValue > aInfo(_rInfo);
TConnectionMap::key_type nId;
OConnectionWrapper::createUniqueId(_rURL,aInfo,nId.m_pBuffer);
TConnectionPool aPack;
// insert the new connection and struct into the active connection map
aPack.nALiveCount = m_nALiveCount;
TActiveConnectionInfo aActiveInfo;
aActiveInfo.aPos = m_aPool.insert(TConnectionMap::value_type(nId,aPack)).first;
aActiveInfo.xPooledConnection = xPooledConnection;
m_aActiveConnections.insert(TActiveConnectionMap::value_type(xConnection,aActiveInfo));
if(m_xInvalidator->isExpired())
m_xInvalidator->start();
}
return xConnection;
}
// -----------------------------------------------------------------------------
void OConnectionPool::invalidatePooledConnections()
{
MutexGuard aGuard(m_aMutex);
TConnectionMap::iterator aIter = m_aPool.begin();
for (; aIter != m_aPool.end(); )
{
if(!(--(aIter->second.nALiveCount))) // connections are invalid
{
::std::for_each(aIter->second.aConnections.begin(),aIter->second.aConnections.end(),TRemoveEventListenerFunctor(this,sal_True));
aIter->second.aConnections.clear();
// look if the iterator aIter is still present in the active connection map
TActiveConnectionMap::iterator aActIter = m_aActiveConnections.begin();
for (; aActIter != m_aActiveConnections.end(); ++aActIter)
{
if(aIter == aActIter->second.aPos)
break;
}
if(aActIter == m_aActiveConnections.end())
{// he isn't so we can delete him
TConnectionMap::iterator aDeleteIter = aIter;
++aIter;
m_aPool.erase(aDeleteIter);
}
else
++aIter;
}
else
++aIter;
}
if(!m_aPool.empty())
m_xInvalidator->start();
}
// -----------------------------------------------------------------------------
Reference< XConnection> OConnectionPool::getPooledConnection(TConnectionMap::iterator& _rIter)
{
Reference<XConnection> xConnection;
if(!_rIter->second.aConnections.empty())
{
Reference< XPooledConnection > xPooledConnection = _rIter->second.aConnections.back();
_rIter->second.aConnections.pop_back();
OSL_ENSURE(xPooledConnection.is(),"Can not be null here!");
xConnection = xPooledConnection->getConnection();
Reference< XComponent > xComponent(xConnection, UNO_QUERY);
if (xComponent.is())
xComponent->addEventListener(this);
TActiveConnectionInfo aActiveInfo;
aActiveInfo.aPos = _rIter;
aActiveInfo.xPooledConnection = xPooledConnection;
m_aActiveConnections[xConnection] = aActiveInfo;
}
return xConnection;
}
// -----------------------------------------------------------------------------
void SAL_CALL OConnectionPool::propertyChange( const PropertyChangeEvent& evt ) throw (::com::sun::star::uno::RuntimeException)
{
if(getTimeoutNodeName() == evt.PropertyName)
{
evt.NewValue >>= m_nALiveCount;
calculateTimeOuts();
}
}
// -----------------------------------------------------------------------------
void OConnectionPool::calculateTimeOuts()
{
sal_Int32 nTimeOutCorrection = 10;
if(m_nALiveCount < 100)
nTimeOutCorrection = 20;
m_nTimeOut = m_nALiveCount / nTimeOutCorrection;
m_nALiveCount = m_nALiveCount / m_nTimeOut;
}
// -----------------------------------------------------------------------------
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