ChordSuccessorList.h

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00001 //
00002 // Copyright (C) 2006 Institut fuer Telematik, Universitaet Karlsruhe (TH)
00003 //
00004 // This program is free software; you can redistribute it and/or
00005 // modify it under the terms of the GNU General Public License
00006 // as published by the Free Software Foundation; either version 2
00007 // of the License, or (at your option) any later version.
00008 //
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 //
00014 // You should have received a copy of the GNU General Public License
00015 // along with this program; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017 //
00018 
00024 #ifndef __CHORDSUCCESSORLIST_H_
00025 #define __CHORDSUCCESSORLIST_H_
00026 
00027 #include <map>
00028 
00029 #include <omnetpp.h>
00030 
00031 #include <InitStages.h>
00032 #include <NodeHandle.h>
00033 
00034 class OverlayKey;
00035 class NotifyResponse;
00036 
00037 namespace oversim {
00038 
00039 class Chord;
00040 
00041 struct SuccessorListEntry
00042 {
00043     NodeHandle nodeHandle ;//*< the nodehandle
00044     bool newEntry;  //*< true, if this entry has just been added
00045 };
00046 
00047 std::ostream& operator<<(std::ostream& os, const SuccessorListEntry& e);
00048 
00049 
00058 class ChordSuccessorList : public cSimpleModule
00059 {
00060   public:
00061     virtual int numInitStages() const
00062     {
00063         return MAX_STAGE_OVERLAY + 1;
00064     }
00065     virtual void initialize(int stage);
00066     virtual void handleMessage(cMessage* msg);
00067 
00075     virtual void initializeList(uint32_t size, NodeHandle owner,
00076         Chord* overlay);
00077 
00083     virtual uint32_t getSize();
00084 
00091     virtual bool isEmpty();
00092 
00099     virtual const NodeHandle& getSuccessor(uint32_t pos = 0);
00100 
00111     virtual void addSuccessor(NodeHandle successor, bool resize = true);
00112 
00113     virtual void updateList(NotifyResponse* notify);
00114 
00115     bool handleFailedNode(const TransportAddress& failed);
00116 
00117     void display ();
00118 
00119 
00120   protected:
00121     NodeHandle thisNode; 
00122     std::map<OverlayKey, SuccessorListEntry> successorMap; 
00124     uint32_t successorListSize; 
00126     Chord* overlay; 
00128     void removeOldSuccessors();
00129 
00133     void updateDisplayString();
00134 
00138     void updateTooltip();
00139 };
00140 
00141 }; //namespace
00142 #endif
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