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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
commit | 940b4d1848e8c70ab7642901a68594e8016caffc (patch) | |
tree | eb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /connectivity/source/cpool/ZConnectionPool.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip |
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'connectivity/source/cpool/ZConnectionPool.cxx')
-rw-r--r-- | connectivity/source/cpool/ZConnectionPool.cxx | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/connectivity/source/cpool/ZConnectionPool.cxx b/connectivity/source/cpool/ZConnectionPool.cxx new file mode 100644 index 000000000..d233599a4 --- /dev/null +++ b/connectivity/source/cpool/ZConnectionPool.cxx @@ -0,0 +1,301 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include "ZConnectionPool.hxx" +#include <com/sun/star/lang/XComponent.hpp> +#include "ZPooledConnection.hxx" +#include "ZPoolCollection.hxx" +#include <connectivity/ConnectionWrapper.hxx> +#include <com/sun/star/beans/XPropertySet.hpp> + + +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> + +void SAL_CALL OPoolTimer::onShot() +{ + m_pPool->invalidatePooledConnections(); +} + +static const char TIMEOUT_NODENAME[] = "Timeout"; + +OConnectionPool::OConnectionPool(const Reference< XDriver >& _xDriver, + const Reference< XInterface >& _xDriverNode, + const Reference< css::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(TIMEOUT_NODENAME,this); + + OPoolCollection::getNodeValue(TIMEOUT_NODENAME, m_xDriverNode) >>= m_nALiveCount; + calculateTimeOuts(); + + m_xInvalidator = new OPoolTimer(this,::salhelper::TTimeValue(m_nTimeOut,0)); + m_xInvalidator->start(); +} + +OConnectionPool::~OConnectionPool() +{ + clear(false); +} + +namespace { + +struct TRemoveEventListenerFunctor +{ + OConnectionPool* m_pConnectionPool; + bool m_bDispose; + + TRemoveEventListenerFunctor(OConnectionPool* _pConnectionPool, bool _bDispose) + : 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 +{ + OConnectionPool* m_pConnectionPool; + + explicit 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,true)); + } +}; + +} + +void OConnectionPool::clear(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(TIMEOUT_NODENAME, this); + + m_xDriverNode.clear(); + m_xDriver.clear(); +} + +Reference< XConnection > OConnectionPool::getConnectionWithInfo( const OUString& _rURL, const Sequence< PropertyValue >& _rInfo ) +{ + 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 css::lang::EventObject& Source ) +{ + 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: Connection 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 OUString& _rURL,const Sequence< PropertyValue >& _rInfo) +{ + // create new pooled connection + 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.emplace(nId,aPack).first; + aActiveInfo.xPooledConnection = xPooledConnection; + m_aActiveConnections.emplace(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,true)); + + aIter->second.aConnections.clear(); + + // look if the iterator aIter is still present in the active connection map + bool isPresent = std::any_of(m_aActiveConnections.begin(), m_aActiveConnections.end(), + [&aIter](const TActiveConnectionMap::value_type& rEntry) { return rEntry.second.aPos == aIter; }); + if(!isPresent) + {// he isn't so we can delete him + aIter = m_aPool.erase(aIter); + } + else + ++aIter; + } + else + ++aIter; + } + if(!m_aPool.empty()) + m_xInvalidator->start(); +} + +Reference< XConnection> OConnectionPool::getPooledConnection(TConnectionMap::iterator const & _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 ) +{ + if(TIMEOUT_NODENAME == 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; +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |