/* -*- 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 "ZPoolCollection.hxx"
#include "ZDriverWrapper.hxx"
#include "ZConnectionPool.hxx"
#include <com/sun/star/configuration/theDefaultProvider.hpp>
#include <com/sun/star/container/XHierarchicalNameAccess.hpp>
#include <com/sun/star/beans/NamedValue.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/reflection/ProxyFactory.hpp>
#include <com/sun/star/sdbc/DriverManager.hpp>
#include <comphelper/processfactory.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <osl/diagnose.h>
#include <sal/log.hxx>
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 ::com::sun::star::reflection;
using namespace ::osl;
using namespace connectivity;
static OUString getConnectionPoolNodeName()
{
return OUString( "org.openoffice.Office.DataAccess/ConnectionPool" );
}
static OUString getEnablePoolingNodeName()
{
return OUString( "EnablePooling" );
}
static OUString getDriverNameNodeName()
{
return OUString( "DriverName" );
}
static OUString getDriverSettingsNodeName()
{
return OUString( "DriverSettings" );
}
static OUString getEnableNodeName()
{
return OUString( "Enable" );
}
OPoolCollection::OPoolCollection(const Reference< XComponentContext >& _rxContext)
:m_xContext(_rxContext)
{
// bootstrap all objects supporting the .sdb.Driver service
m_xManager = DriverManager::create( m_xContext );
m_xProxyFactory = ProxyFactory::create( m_xContext );
Reference<XPropertySet> xProp(getConfigPoolRoot(),UNO_QUERY);
if ( xProp.is() )
xProp->addPropertyChangeListener(getEnablePoolingNodeName(),this);
// attach as desktop listener to know when we have to release our pools
osl_atomic_increment( &m_refCount );
{
m_xDesktop = css::frame::Desktop::create( m_xContext );
m_xDesktop->addTerminateListener(this);
}
osl_atomic_decrement( &m_refCount );
}
OPoolCollection::~OPoolCollection()
{
clearConnectionPools(false);
}
Reference< XConnection > SAL_CALL OPoolCollection::getConnection( const OUString& _rURL )
{
return getConnectionWithInfo(_rURL,Sequence< PropertyValue >());
}
Reference< XConnection > SAL_CALL OPoolCollection::getConnectionWithInfo( const OUString& _rURL, const Sequence< PropertyValue >& _rInfo )
{
MutexGuard aGuard(m_aMutex);
Reference< XConnection > xConnection;
Reference< XDriver > xDriver;
Reference< XInterface > xDriverNode;
OUString sImplName;
if(isPoolingEnabledByUrl(_rURL,xDriver,sImplName,xDriverNode) && xDriver.is())
{
OConnectionPool* pConnectionPool = getConnectionPool(sImplName,xDriver,xDriverNode);
if(pConnectionPool)
xConnection = pConnectionPool->getConnectionWithInfo(_rURL,_rInfo);
}
else if(xDriver.is())
xConnection = xDriver->connect(_rURL,_rInfo);
return xConnection;
}
void SAL_CALL OPoolCollection::setLoginTimeout( sal_Int32 seconds )
{
MutexGuard aGuard(m_aMutex);
m_xManager->setLoginTimeout(seconds);
}
sal_Int32 SAL_CALL OPoolCollection::getLoginTimeout( )
{
MutexGuard aGuard(m_aMutex);
return m_xManager->getLoginTimeout();
}
OUString SAL_CALL OPoolCollection::getImplementationName( )
{
return getImplementationName_Static();
}
sal_Bool SAL_CALL OPoolCollection::supportsService( const OUString& _rServiceName )
{
return cppu::supportsService(this, _rServiceName);
}
Sequence< OUString > SAL_CALL OPoolCollection::getSupportedServiceNames( )
{
return getSupportedServiceNames_Static();
}
//---------------------------------------OPoolCollection----------------------------------
Reference< XInterface > OPoolCollection::CreateInstance(const Reference< XMultiServiceFactory >& _rxFactory)
{
return static_cast<XDriverManager*>(new OPoolCollection(comphelper::getComponentContext(_rxFactory)));
}
OUString OPoolCollection::getImplementationName_Static( )
{
return OUString("com.sun.star.sdbc.OConnectionPool");
}
Sequence< OUString > OPoolCollection::getSupportedServiceNames_Static( )
{
Sequence< OUString > aSupported { "com.sun.star.sdbc.ConnectionPool" };
return aSupported;
}
Reference< XDriver > SAL_CALL OPoolCollection::getDriverByURL( const OUString& _rURL )
{
// returns the original driver when no connection pooling is enabled else it returns the proxy
MutexGuard aGuard(m_aMutex);
Reference< XDriver > xDriver;
Reference< XInterface > xDriverNode;
OUString sImplName;
if(isPoolingEnabledByUrl(_rURL,xDriver,sImplName,xDriverNode))
{
Reference< XDriver > xExistentProxy;
// look if we already have a proxy for this driver
for ( MapDriver2DriverRef::const_iterator aLookup = m_aDriverProxies.begin();
aLookup != m_aDriverProxies.end();
++aLookup
)
{
// hold the proxy alive as long as we're in this loop round
xExistentProxy = aLookup->second;
if (xExistentProxy.is() && (aLookup->first.get() == xDriver.get()))
// already created a proxy for this
break;
}
if (xExistentProxy.is())
{
xDriver = xExistentProxy;
}
else
{ // create a new proxy for the driver
// this allows us to control the connections created by it
Reference< XAggregation > xDriverProxy = m_xProxyFactory->createProxy(xDriver.get());
OSL_ENSURE(xDriverProxy.is(), "OConnectionPool::getDriverByURL: invalid proxy returned by the proxy factory!");
OConnectionPool* pConnectionPool = getConnectionPool(sImplName,xDriver,xDriverNode);
xDriver = new ODriverWrapper(xDriverProxy, pConnectionPool);
}
}
return xDriver;
}
bool OPoolCollection::isDriverPoolingEnabled(const OUString& _sDriverImplName,
Reference< XInterface >& _rxDriverNode)
{
bool bEnabled = false;
Reference<XInterface> xConnectionPoolRoot = getConfigPoolRoot();
// then look for which of them settings are stored in the configuration
Reference< XNameAccess > xDirectAccess(openNode(getDriverSettingsNodeName(),xConnectionPoolRoot),UNO_QUERY);
if(xDirectAccess.is())
{
Sequence< OUString > aDriverKeys = xDirectAccess->getElementNames();
const OUString* pDriverKeys = aDriverKeys.getConstArray();
const OUString* pDriverKeysEnd = pDriverKeys + aDriverKeys.getLength();
for (;pDriverKeys != pDriverKeysEnd; ++pDriverKeys)
{
// the name of the driver in this round
if(_sDriverImplName == *pDriverKeys)
{
_rxDriverNode = openNode(*pDriverKeys,xDirectAccess);
if(_rxDriverNode.is())
getNodeValue(getEnableNodeName(),_rxDriverNode) >>= bEnabled;
break;
}
}
}
return bEnabled;
}
bool OPoolCollection::isPoolingEnabled()
{
// the config node where all pooling relevant info are stored under
Reference<XInterface> xConnectionPoolRoot = getConfigPoolRoot();
// the global "enabled" flag
bool bEnabled = false;
if(xConnectionPoolRoot.is())
getNodeValue(getEnablePoolingNodeName(),xConnectionPoolRoot) >>= bEnabled;
return bEnabled;
}
Reference<XInterface> const & OPoolCollection::getConfigPoolRoot()
{
if(!m_xConfigNode.is())
m_xConfigNode = createWithProvider(
css::configuration::theDefaultProvider::get(m_xContext),
getConnectionPoolNodeName());
return m_xConfigNode;
}
bool OPoolCollection::isPoolingEnabledByUrl(const OUString& _sUrl,
Reference< XDriver >& _rxDriver,
OUString& _rsImplName,
Reference< XInterface >& _rxDriverNode)
{
bool bEnabled = false;
_rxDriver = m_xManager->getDriverByURL(_sUrl);
if (_rxDriver.is() && isPoolingEnabled())
{
Reference< XServiceInfo > xSerivceInfo(_rxDriver,UNO_QUERY);
OSL_ENSURE(xSerivceInfo.is(),"Each driver should have a XServiceInfo interface!");
if(xSerivceInfo.is())
{
// look for the implementation name of the driver
_rsImplName = xSerivceInfo->getImplementationName();
bEnabled = isDriverPoolingEnabled(_rsImplName,_rxDriverNode);
}
}
return bEnabled;
}
void OPoolCollection::clearConnectionPools(bool _bDispose)
{
OConnectionPools::const_iterator aIter = m_aPools.begin();
while(aIter != m_aPools.end())
{
aIter->second->clear(_bDispose);
++aIter;
}
m_aPools.clear();
}
OConnectionPool* OPoolCollection::getConnectionPool(const OUString& _sImplName,
const Reference< XDriver >& _xDriver,
const Reference< XInterface >& _xDriverNode)
{
OConnectionPool *pRet = nullptr;
OConnectionPools::const_iterator aFind = m_aPools.find(_sImplName);
if (aFind != m_aPools.end())
pRet = aFind->second.get();
else if (_xDriver.is() && _xDriverNode.is())
{
Reference<XPropertySet> xProp(_xDriverNode,UNO_QUERY);
if(xProp.is())
xProp->addPropertyChangeListener(getEnableNodeName(),this);
OConnectionPool* pConnectionPool = new OConnectionPool(_xDriver,_xDriverNode,m_xProxyFactory);
aFind = m_aPools.emplace(_sImplName,pConnectionPool).first;
pRet = aFind->second.get();
}
OSL_ENSURE(pRet, "Could not query DriverManager from ConnectionPool!");
return pRet;
}
Reference< XInterface > OPoolCollection::createWithProvider(const Reference< XMultiServiceFactory >& _rxConfProvider,
const OUString& _rPath)
{
OSL_ASSERT(_rxConfProvider.is());
Sequence< Any > args(1);
args[0] <<= NamedValue( "nodepath", makeAny(_rPath));
Reference< XInterface > xInterface(
_rxConfProvider->createInstanceWithArguments(
"com.sun.star.configuration.ConfigurationAccess",
args));
OSL_ENSURE(
xInterface.is(),
"::createWithProvider: could not create the node access!");
return xInterface;
}
Reference<XInterface> OPoolCollection::openNode(const OUString& _rPath,const Reference<XInterface>& _xTreeNode) throw()
{
Reference< XHierarchicalNameAccess > xHierarchyAccess(_xTreeNode, UNO_QUERY);
Reference< XNameAccess > xDirectAccess(_xTreeNode, UNO_QUERY);
Reference< XInterface > xNode;
try
{
if (xDirectAccess.is() && xDirectAccess->hasByName(_rPath))
{
xNode.set(xDirectAccess->getByName(_rPath), css::uno::UNO_QUERY);
SAL_WARN_IF(
!xNode.is(), "connectivity.cpool",
"OConfigurationNode::openNode: could not open the node!");
}
else if (xHierarchyAccess.is())
{
xNode.set(
xHierarchyAccess->getByHierarchicalName(_rPath),
css::uno::UNO_QUERY);
SAL_WARN_IF(
!xNode.is(), "connectivity.cpool",
"OConfigurationNode::openNode: could not open the node!");
}
}
catch(const NoSuchElementException&)
{
SAL_WARN("connectivity.cpool", "::openNode: there is no element named " <<
_rPath << "!");
}
catch(Exception&)
{
SAL_WARN("connectivity.cpool", "OConfigurationNode::openNode: caught an exception while retrieving the node!");
}
return xNode;
}
Any OPoolCollection::getNodeValue(const OUString& _rPath,const Reference<XInterface>& _xTreeNode) throw()
{
Reference< XHierarchicalNameAccess > xHierarchyAccess(_xTreeNode, UNO_QUERY);
Reference< XNameAccess > xDirectAccess(_xTreeNode, UNO_QUERY);
Any aReturn;
try
{
if (xDirectAccess.is() && xDirectAccess->hasByName(_rPath) )
{
aReturn = xDirectAccess->getByName(_rPath);
}
else if (xHierarchyAccess.is())
{
aReturn = xHierarchyAccess->getByHierarchicalName(_rPath);
}
}
catch(NoSuchElementException& e)
{
SAL_WARN("connectivity.cpool", e );
}
return aReturn;
}
void SAL_CALL OPoolCollection::queryTermination( const EventObject& /*Event*/ )
{
}
void SAL_CALL OPoolCollection::notifyTermination( const EventObject& /*Event*/ )
{
clearDesktop();
}
void SAL_CALL OPoolCollection::disposing( const EventObject& Source )
{
MutexGuard aGuard(m_aMutex);
if ( m_xDesktop == Source.Source )
{
clearDesktop();
}
else
{
try
{
Reference<XPropertySet> xProp(Source.Source,UNO_QUERY);
if(Source.Source == m_xConfigNode)
{
if ( xProp.is() )
xProp->removePropertyChangeListener(getEnablePoolingNodeName(),this);
m_xConfigNode.clear();
}
else if ( xProp.is() )
xProp->removePropertyChangeListener(getEnableNodeName(),this);
}
catch(const Exception&)
{
SAL_WARN("connectivity.cpool", "Exception caught");
}
}
}
void SAL_CALL OPoolCollection::propertyChange( const css::beans::PropertyChangeEvent& evt )
{
MutexGuard aGuard(m_aMutex);
if(evt.Source == m_xConfigNode)
{
bool bEnabled = true;
evt.NewValue >>= bEnabled;
if(!bEnabled )
{
m_aDriverProxies.clear();
m_aDriverProxies = MapDriver2DriverRef();
OConnectionPools::iterator aIter = m_aPools.begin();
for(;aIter != m_aPools.end();++aIter)
{
aIter->second->clear(false);
}
m_aPools.clear();
}
}
else if(evt.Source.is())
{
bool bEnabled = true;
evt.NewValue >>= bEnabled;
if(!bEnabled)
{
OUString sThisDriverName;
getNodeValue(getDriverNameNodeName(),evt.Source) >>= sThisDriverName;
// 1st release the driver
// look if we already have a proxy for this driver
MapDriver2DriverRef::iterator aLookup = m_aDriverProxies.begin();
while( aLookup != m_aDriverProxies.end())
{
MapDriver2DriverRef::iterator aFind = aLookup;
Reference<XServiceInfo> xInfo(aLookup->first,UNO_QUERY);
++aLookup;
if(xInfo.is() && xInfo->getImplementationName() == sThisDriverName)
m_aDriverProxies.erase(aFind);
}
// 2nd clear the connectionpool
OConnectionPools::iterator aFind = m_aPools.find(sThisDriverName);
if(aFind != m_aPools.end())
{
aFind->second->clear(false);
m_aPools.erase(aFind);
}
}
}
}
void OPoolCollection::clearDesktop()
{
clearConnectionPools(true);
if ( m_xDesktop.is() )
m_xDesktop->removeTerminateListener(this);
m_xDesktop.clear();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V572 It is odd that the object which was created using 'new' operator is immediately cast to another type.