300 lines
9.9 KiB
C++
300 lines
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "ZConnectionPool.hxx"
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#include <com/sun/star/lang/XComponent.hpp>
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#include "ZPooledConnection.hxx"
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#include "ZPoolCollection.hxx"
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#include <connectivity/ConnectionWrapper.hxx>
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#include <com/sun/star/beans/XPropertySet.hpp>
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#include <algorithm>
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::lang;
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using namespace ::com::sun::star::sdbc;
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using namespace ::com::sun::star::beans;
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using namespace ::com::sun::star::container;
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using namespace connectivity;
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void SAL_CALL OPoolTimer::onShot()
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{
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m_pPool->invalidatePooledConnections();
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}
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constexpr OUString TIMEOUT_NODENAME = u"Timeout"_ustr;
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OConnectionPool::OConnectionPool(const Reference< XDriver >& _xDriver,
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const Reference< XInterface >& _xDriverNode,
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const Reference< css::reflection::XProxyFactory >& _rxProxyFactory)
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:m_xDriver(_xDriver)
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,m_xDriverNode(_xDriverNode)
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,m_xProxyFactory(_rxProxyFactory)
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,m_nTimeOut(10)
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,m_nALiveCount(10)
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{
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OSL_ENSURE(m_xDriverNode.is(),"NO valid Driver node set!");
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Reference< XComponent > xComponent(m_xDriverNode, UNO_QUERY);
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if (xComponent.is())
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xComponent->addEventListener(this);
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Reference<XPropertySet> xProp(m_xDriverNode,UNO_QUERY);
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if(xProp.is())
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xProp->addPropertyChangeListener(TIMEOUT_NODENAME,this);
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OPoolCollection::getNodeValue(TIMEOUT_NODENAME, m_xDriverNode) >>= m_nALiveCount;
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calculateTimeOuts();
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m_xInvalidator = new OPoolTimer(this,::salhelper::TTimeValue(m_nTimeOut,0));
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m_xInvalidator->start();
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}
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OConnectionPool::~OConnectionPool()
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{
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clear(false);
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}
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namespace {
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struct TRemoveEventListenerFunctor
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{
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OConnectionPool* m_pConnectionPool;
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bool m_bDispose;
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TRemoveEventListenerFunctor(OConnectionPool* _pConnectionPool, bool _bDispose)
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: m_pConnectionPool(_pConnectionPool)
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,m_bDispose(_bDispose)
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{
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OSL_ENSURE(m_pConnectionPool,"No connection pool!");
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}
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void dispose(const Reference<XInterface>& _xComponent)
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{
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Reference< XComponent > xComponent(_xComponent, UNO_QUERY);
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if ( xComponent.is() )
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{
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xComponent->removeEventListener(m_pConnectionPool);
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if ( m_bDispose )
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xComponent->dispose();
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}
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}
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void operator()(const TPooledConnections::value_type& _aValue)
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{
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dispose(_aValue);
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}
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void operator()(const TActiveConnectionMap::value_type& _aValue)
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{
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dispose(_aValue.first);
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}
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};
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struct TConnectionPoolFunctor
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{
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OConnectionPool* m_pConnectionPool;
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explicit TConnectionPoolFunctor(OConnectionPool* _pConnectionPool)
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: m_pConnectionPool(_pConnectionPool)
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{
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OSL_ENSURE(m_pConnectionPool,"No connection pool!");
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}
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void operator()(const TConnectionMap::value_type& _aValue)
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{
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std::for_each(_aValue.second.aConnections.begin(),_aValue.second.aConnections.end(),TRemoveEventListenerFunctor(m_pConnectionPool,true));
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}
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};
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}
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void OConnectionPool::clear(bool _bDispose)
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{
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std::unique_lock aGuard(m_aMutex);
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if(m_xInvalidator->isTicking())
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m_xInvalidator->stop();
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std::for_each(m_aPool.begin(),m_aPool.end(),TConnectionPoolFunctor(this));
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m_aPool.clear();
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std::for_each(m_aActiveConnections.begin(),m_aActiveConnections.end(),TRemoveEventListenerFunctor(this,_bDispose));
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m_aActiveConnections.clear();
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Reference< XComponent > xComponent(m_xDriverNode, UNO_QUERY);
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if (xComponent.is())
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xComponent->removeEventListener(this);
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Reference< XPropertySet > xProp(m_xDriverNode, UNO_QUERY);
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if (xProp.is())
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xProp->removePropertyChangeListener(TIMEOUT_NODENAME, this);
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m_xDriverNode.clear();
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m_xDriver.clear();
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}
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Reference< XConnection > OConnectionPool::getConnectionWithInfo( const OUString& _rURL, const Sequence< PropertyValue >& _rInfo )
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{
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std::unique_lock aGuard(m_aMutex);
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Reference<XConnection> xConnection;
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// create a unique id and look for it in our map
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Sequence< PropertyValue > aInfo(_rInfo);
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TConnectionMap::key_type nId;
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OConnectionWrapper::createUniqueId(_rURL,aInfo,nId.m_pBuffer);
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TConnectionMap::iterator aIter = m_aPool.find(nId);
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if ( m_aPool.end() != aIter )
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xConnection = getPooledConnection(aIter);
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if ( !xConnection.is() )
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xConnection = createNewConnection(_rURL,_rInfo);
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return xConnection;
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}
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void SAL_CALL OConnectionPool::disposing( const css::lang::EventObject& Source )
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{
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Reference<XConnection> xConnection(Source.Source,UNO_QUERY);
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if(xConnection.is())
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{
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std::unique_lock aGuard(m_aMutex);
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TActiveConnectionMap::iterator aIter = m_aActiveConnections.find(xConnection);
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OSL_ENSURE(aIter != m_aActiveConnections.end(),"OConnectionPool::disposing: Connection wasn't in pool");
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if(aIter != m_aActiveConnections.end())
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{ // move the pooled connection back to the pool
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aIter->second.aPos->second.nALiveCount = m_nALiveCount;
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aIter->second.aPos->second.aConnections.push_back(aIter->second.xPooledConnection);
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m_aActiveConnections.erase(aIter);
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}
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}
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else
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{
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m_xDriverNode.clear();
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}
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}
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Reference< XConnection> OConnectionPool::createNewConnection(const OUString& _rURL,const Sequence< PropertyValue >& _rInfo)
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{
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// create new pooled connection
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Reference< XPooledConnection > xPooledConnection = new ::connectivity::OPooledConnection(m_xDriver->connect(_rURL,_rInfo),m_xProxyFactory);
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// get the new connection from the pooled connection
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Reference<XConnection> xConnection = xPooledConnection->getConnection();
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if(xConnection.is())
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{
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// add our own as dispose listener to know when we should put the connection back to the pool
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Reference< XComponent > xComponent(xConnection, UNO_QUERY);
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if (xComponent.is())
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xComponent->addEventListener(this);
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// save some information to find the right pool later on
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Sequence< PropertyValue > aInfo(_rInfo);
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TConnectionMap::key_type nId;
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OConnectionWrapper::createUniqueId(_rURL,aInfo,nId.m_pBuffer);
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TConnectionPool aPack;
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// insert the new connection and struct into the active connection map
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aPack.nALiveCount = m_nALiveCount;
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TActiveConnectionInfo aActiveInfo;
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aActiveInfo.aPos = m_aPool.emplace(nId,aPack).first;
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aActiveInfo.xPooledConnection = std::move(xPooledConnection);
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m_aActiveConnections.emplace(xConnection,aActiveInfo);
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if(m_xInvalidator->isExpired())
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m_xInvalidator->start();
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}
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return xConnection;
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}
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void OConnectionPool::invalidatePooledConnections()
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{
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std::unique_lock aGuard(m_aMutex);
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TConnectionMap::iterator aIter = m_aPool.begin();
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for (; aIter != m_aPool.end(); )
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{
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if(!(--(aIter->second.nALiveCount))) // connections are invalid
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{
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std::for_each(aIter->second.aConnections.begin(),aIter->second.aConnections.end(),TRemoveEventListenerFunctor(this,true));
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aIter->second.aConnections.clear();
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// look if the iterator aIter is still present in the active connection map
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bool isPresent = std::any_of(m_aActiveConnections.begin(), m_aActiveConnections.end(),
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[&aIter](const TActiveConnectionMap::value_type& rEntry) { return rEntry.second.aPos == aIter; });
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if(!isPresent)
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{// he isn't so we can delete him
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aIter = m_aPool.erase(aIter);
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}
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else
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++aIter;
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}
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else
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++aIter;
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}
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if(!m_aPool.empty())
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m_xInvalidator->start();
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}
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Reference< XConnection> OConnectionPool::getPooledConnection(TConnectionMap::iterator const & _rIter)
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{
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Reference<XConnection> xConnection;
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if(!_rIter->second.aConnections.empty())
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{
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Reference< XPooledConnection > xPooledConnection = _rIter->second.aConnections.back();
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_rIter->second.aConnections.pop_back();
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OSL_ENSURE(xPooledConnection.is(),"Can not be null here!");
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xConnection = xPooledConnection->getConnection();
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Reference< XComponent > xComponent(xConnection, UNO_QUERY);
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if (xComponent.is())
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xComponent->addEventListener(this);
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TActiveConnectionInfo aActiveInfo;
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aActiveInfo.aPos = _rIter;
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aActiveInfo.xPooledConnection = std::move(xPooledConnection);
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m_aActiveConnections[xConnection] = std::move(aActiveInfo);
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}
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return xConnection;
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}
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void SAL_CALL OConnectionPool::propertyChange( const PropertyChangeEvent& evt )
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{
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if(TIMEOUT_NODENAME == evt.PropertyName)
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{
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OPoolCollection::getNodeValue(TIMEOUT_NODENAME, m_xDriverNode) >>= m_nALiveCount;
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calculateTimeOuts();
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}
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}
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void OConnectionPool::calculateTimeOuts()
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{
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sal_Int32 nTimeOutCorrection = 10;
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if(m_nALiveCount < 100)
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nTimeOutCorrection = 20;
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m_nTimeOut = m_nALiveCount / nTimeOutCorrection;
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m_nALiveCount = m_nALiveCount / m_nTimeOut;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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