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