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130 lines
3.4 KiB
130 lines
3.4 KiB
/*
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* cache.cpp - (c) 2003 Frerich Raabe <raabe@kde.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cache.h"
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#include "xmlrpciface.h"
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#include <kdebug.h>
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#include <kstandarddirs.h>
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#include <tqdatastream.h>
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#include <tqfile.h>
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bool CacheEntry::isValid() const
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{
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// Cache entries get invalid after on hour. One shouldn't hardcode this
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// but for now it'll do.
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return m_timeStamp.secsTo( TQDateTime::currentDateTime() ) < 3600;
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}
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Cache *Cache::m_instance = 0;
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Cache &Cache::self()
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{
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if ( !m_instance )
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m_instance = new Cache;
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return *m_instance;
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}
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TQString Cache::getCacheKey( const TQString &server, const TQString &method,
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const TQValueList<TQVariant> &args )
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{
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TQString key;
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key = server + TQString::fromLatin1( "__" );
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key += method + TQString::fromLatin1( "__" );
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TQValueList<TQVariant>::ConstIterator it = args.begin();
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TQValueList<TQVariant>::ConstIterator end = args.end();
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for ( ; it != end; ++it )
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key += KXMLRPC::Query::marshal( *it );
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return key;
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}
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Cache::Cache()
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{
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load();
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}
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Cache::~Cache()
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{
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save();
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}
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void Cache::load()
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{
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TQFile file( cacheFileName() );
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if ( !file.open( IO_ReadOnly ) ) {
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kdDebug() << "Failed to open cache file " << cacheFileName() << endl;
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return;
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}
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TQDataStream stream( &file );
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while ( !stream.atEnd() ) {
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TQString key;
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stream >> key;
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CacheEntry *entry = new CacheEntry;
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stream >> *entry;
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TQDict<CacheEntry>::insert( key, entry );
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}
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}
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void Cache::save()
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{
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TQFile file( cacheFileName() );
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if ( !file.open( IO_WriteOnly ) ) {
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kdDebug() << "Failed to open cache file " << cacheFileName() << endl;
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return;
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}
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TQDataStream stream( &file );
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TQDictIterator<CacheEntry> it( *this );
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for ( ; it.current() != 0; ++it )
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stream << it.currentKey() << *it.current();
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}
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void Cache::touch( const TQString &key )
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{
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CacheEntry *entry = find( key );
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if ( !entry )
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return;
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entry->m_timeStamp = TQDateTime::currentDateTime();
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}
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void Cache::insert( const TQString &key, const KXMLRPC::Query::Result &result )
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{
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CacheEntry *entry = new CacheEntry;
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entry->m_timeStamp = TQDateTime::currentDateTime();
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entry->m_result = result;
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TQDict<CacheEntry>::insert( key, entry );
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}
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TQString Cache::cacheFileName() const
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{
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return locateLocal( "appdata", "cache/dcoprss.cache" );
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}
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