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/* -*- 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 .
*/
#pragma once
#include <sal/config.h>
#include <map>
#include <mutex>
#include <vector>
#include <com/sun/star/sdbc/XPooledConnection.hpp>
#include <com/sun/star/sdbc/XDriver.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/beans/XPropertyChangeListener.hpp>
#include <com/sun/star/reflection/XProxyFactory.hpp>
#include <cppuhelper/implbase.hxx>
#include <osl/mutex.hxx>
#include <salhelper/timer.hxx>
#include <rtl/ref.hxx>
#include <rtl/digest.h>
namespace connectivity
{
class OConnectionPool;
/// OPoolTimer - Invalidates the connection pool
class OPoolTimer : public ::salhelper::Timer
{
OConnectionPool* m_pPool;
public:
OPoolTimer(OConnectionPool* _pPool,const ::salhelper::TTimeValue& Time)
: ::salhelper::Timer(Time)
,m_pPool(_pPool)
{}
protected:
virtual void SAL_CALL onShot() override;
};
// OConnectionPool - the one-instance service for PooledConnections
// manages the active connections and the connections in the pool
// typedef for the internal structure
typedef std::vector< css::uno::Reference< css::sdbc::XPooledConnection> > TPooledConnections;
// contains the currently pooled connections
struct TConnectionPool
{
TPooledConnections aConnections;
sal_Int32 nALiveCount; // will be decremented every time a time says to, when will reach zero the pool will be deleted
};
struct TDigestHolder
{
sal_uInt8 m_pBuffer[RTL_DIGEST_LENGTH_SHA1];
TDigestHolder()
{
m_pBuffer[0] = 0;
}
};
// typedef TDigestHolder
struct TDigestLess
{
bool operator() (const TDigestHolder& x, const TDigestHolder& y) const
{
sal_uInt32 i;
for(i=0;i < RTL_DIGEST_LENGTH_SHA1 && (x.m_pBuffer[i] >= y.m_pBuffer[i]); ++i)
;
return i < RTL_DIGEST_LENGTH_SHA1;
}
};
typedef std::map< TDigestHolder,TConnectionPool,TDigestLess> TConnectionMap;
// contains additional information about an activeconnection which is needed to put it back to the pool
struct TActiveConnectionInfo
{
TConnectionMap::iterator aPos;
css::uno::Reference< css::sdbc::XPooledConnection> xPooledConnection;
};
typedef std::map< css::uno::Reference< css::sdbc::XConnection>,
TActiveConnectionInfo> TActiveConnectionMap;
class OConnectionPool : public ::cppu::WeakImplHelper< css::beans::XPropertyChangeListener>
{
TConnectionMap m_aPool; // the pooled connections
TActiveConnectionMap m_aActiveConnections; // the currently active connections
std::mutex m_aMutex;
::rtl::Reference<OPoolTimer> m_xInvalidator; // invalidates the conntection pool when shot
css::uno::Reference< css::sdbc::XDriver > m_xDriver; // the one and only driver for this connectionpool
css::uno::Reference< css::uno::XInterface > m_xDriverNode; // config node entry
css::uno::Reference< css::reflection::XProxyFactory > m_xProxyFactory;
sal_Int32 m_nTimeOut;
sal_Int32 m_nALiveCount;
private:
css::uno::Reference< css::sdbc::XConnection> createNewConnection(const OUString& _rURL,
const css::uno::Sequence< css::beans::PropertyValue >& _rInfo);
css::uno::Reference< css::sdbc::XConnection> getPooledConnection(TConnectionMap::iterator const & _rIter);
// calculate the timeout and the corresponding ALiveCount
void calculateTimeOuts();
protected:
// the dtor will be called from the last instance (last release call)
virtual ~OConnectionPool() override;
public:
OConnectionPool(const css::uno::Reference< css::sdbc::XDriver >& _xDriver,
const css::uno::Reference< css::uno::XInterface >& _xDriverNode,
const css::uno::Reference< css::reflection::XProxyFactory >& _rxProxyFactory);
// delete all refs
void clear(bool _bDispose);
/// @throws css::sdbc::SQLException
/// @throws css::uno::RuntimeException
css::uno::Reference< css::sdbc::XConnection > getConnectionWithInfo( const OUString& url, const css::uno::Sequence< css::beans::PropertyValue >& info );
// XEventListener
virtual void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
// XPropertyChangeListener
virtual void SAL_CALL propertyChange( const css::beans::PropertyChangeEvent& evt ) override;
void invalidatePooledConnections();
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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