runtime/nepomuk/services/strigi/strigiservice.cpp

   1 /* This file is part of the KDE Project
   2    Copyright (c) 2008 Sebastian Trueg <trueg@kde.org>
   3
   4    This library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public
   6    License version 2 as published by the Free Software Foundation.
   7
   8    This library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Library General Public License for more details.
  12
  13    You should have received a copy of the GNU Library General Public License
  14    along with this library; see the file COPYING.LIB.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18
  19 #include "strigiservice.h"
  20 #include "strigiserviceadaptor.h"
  21 #include "priority.h"
  22 #include "indexscheduler.h"
  23 #include "eventmonitor.h"
  24 #include "systray.h"
  25 #include "config.h"
  26 #include "statuswidget.h"
  27 #include "nepomukstorageinterface.h"
  28
  29 #include <KDebug>
  30
  31 #include <strigi/indexpluginloader.h>
  32 #include <strigi/indexmanager.h>
  33
  34 #include <nepomuk/resourcemanager.h>
  35
  36
  37 Nepomuk::StrigiService::StrigiService( QObject* parent, const QList<QVariant>& )
  38     : Service( parent, true )
  39 {
  40     // only so ResourceManager won't open yet another connection to the nepomuk server
  41     ResourceManager::instance()->setOverrideMainModel( mainModel() );
  42
  43     // lower process priority - we do not want to spoil KDE usage
  44     // ==============================================================
  45     if ( !lowerPriority() )
  46         kDebug() << "Failed to lower priority.";
  47     if ( !lowerSchedulingPriority() )
  48         kDebug() << "Failed to lower scheduling priority.";
  49     if ( !lowerIOPriority() )
  50         kDebug() << "Failed to lower io priority.";
  51
  52     // Using Strigi with the redland backend is torture.
  53     // Thus we simply fail initialization if it is used
  54     // ==============================================================
  55     if ( org::kde::nepomuk::Storage( "org.kde.NepomukStorage",
  56                                      "/nepomukstorage",
  57                                      QDBusConnection::sessionBus() )
  58          .usedSopranoBackend().value() != QString::fromLatin1( "redland" ) ) {
  59         // setup the actual index scheduler including strigi stuff
  60         // ==============================================================
  61         if ( ( m_indexManager = Strigi::IndexPluginLoader::createIndexManager( "sopranobackend", 0 ) ) ) {
  62             m_indexScheduler = new IndexScheduler( m_indexManager, this );
  63
  64             ( void )new EventMonitor( m_indexScheduler, this );
  65             ( void )new StrigiServiceAdaptor( m_indexScheduler, this );
  66             StatusWidget* sw = new StatusWidget( mainModel(), m_indexScheduler );
  67             ( new SystemTray( m_indexScheduler, sw ) )->show();
  68
  69             m_indexScheduler->start();
  70         }
  71         else {
  72             kDebug() << "Failed to load sopranobackend Strigi index manager.";
  73         }
  74
  75
  76         // service initialization done if creating a strigi index manager was successful
  77         // ==============================================================
  78         setServiceInitialized( m_indexManager != 0 );
  79     }
  80     else {
  81         kDebug() << "Will not start when using redland Soprano backend due to horrible performance.";
  82         setServiceInitialized( false );
  83     }
  84 }
  85
  86
  87 Nepomuk::StrigiService::~StrigiService()
  88 {
  89     if ( m_indexManager ) {
  90         m_indexScheduler->stop();
  91         m_indexScheduler->wait();
  92         Strigi::IndexPluginLoader::deleteIndexManager( m_indexManager );
  93     }
  94 }
  95
  96
  97 #include <kpluginfactory.h>
  98 #include <kpluginloader.h>
  99
 100 NEPOMUK_EXPORT_SERVICE( Nepomuk::StrigiService, "nepomukstrigiservice" )
 101
 102 #include "strigiservice.moc"
 103