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