src/dash/network/package/dispatcher.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by David Cuadrado                                  *
   3  *   krawek@gmail.com                                                      *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "dispatcher.h"
  22
  23 #include <QSet>
  24 #include <QQueue>
  25 #include <QThread>
  26 #include <QDomDocument>
  27
  28 #include "observer.h"
  29 #include "source.h"
  30
  31 #include <dcore/debug.h>
  32
  33 namespace Dash {
  34 namespace Network {
  35 namespace Package {
  36
  37 class DispatcherThread// : public QThread
  38 {
  39         public:
  40                 DispatcherThread();
  41 //      protected:
  42                 void run();
  43
  44         public:
  45                 QSet<Observer *> observers;
  46                 QQueue<Source *> packages;
  47 };
  48
  49 DispatcherThread::DispatcherThread()
  50 {
  51 }
  52
  53 void DispatcherThread::run()
  54 {
  55         while( ! packages.isEmpty() )
  56         {
  57                 Source *package = packages.dequeue();
  58
  59                 foreach(Observer *observer, observers)
  60                 {
  61                         observer->handlePackage(package);
  62                         if( package->isAccepted() )
  63                                 break;
  64                 }
  65
  66                 delete package;
  67         }
  68 }
  69
  70 struct Dispatcher::Private
  71 {
  72         DispatcherThread *thread;
  73 };
  74
  75 Dispatcher::Dispatcher() : d(new Private)
  76 {
  77         d->thread = new DispatcherThread;
  78 }
  79
  80
  81 Dispatcher::~Dispatcher()
  82 {
  83         qDeleteAll(d->thread->packages);
  84         delete d->thread;
  85         delete d;
  86 }
  87
  88 /**
  89  * @~english
  90  * Adds a package to be dispatched, the package is owned by the dispatcher.
  91  * @param pkg
  92  */
  93 void Dispatcher::addSource(Source *pkg)
  94 {
  95         d->thread->packages.enqueue(pkg);
  96 }
  97
  98 /**
  99  * @~english
 100  * Create and adds a package to be dispatched.
 101  * @param id
 102  * @param xml
 103  */
 104 void Dispatcher::addSource(const QString &id, const QString &xml, Dash::Network::Socket *socket)
 105 {
 106         addSource(new Source(id, xml, socket));
 107 }
 108
 109 /**
 110  * @~english
 111  * Create and adds a package to be dispatched.
 112  * @param xml
 113  */
 114 void Dispatcher::addSource(const QString &xml, Dash::Network::Socket *socket)
 115 {
 116         QDomDocument doc;
 117         if( doc.setContent(xml) )
 118         {
 119                 addSource(doc.documentElement().tagName(), xml, socket);
 120         }
 121 }
 122
 123
 124 /**
 125  * Adds an observer to the dispatcher, The observer handle the package dispatched.
 126  * @param observer
 127  */
 128 void Dispatcher::addObserver(Observer *observer)
 129 {
 130         d->thread->observers << observer;
 131 }
 132
 133 /**
 134  * Removes an observer.
 135  * @param observer
 136  */
 137 void Dispatcher::removeObserver(Observer *observer)
 138 {
 139         d->thread->observers.remove(observer);
 140 }
 141
 142 /**
 143  * Processes all packages
 144  */
 145 void Dispatcher::process()
 146 {
 147 //      if( ! d->thread->isRunning() )
 148         {
 149 //              d->thread->start();
 150                 d->thread->run();
 151         }
 152 }
 153
 154 }
 155 }
 156 }