00001 // 00002 // Copyright (C) 2009 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 __NICECLUSTER_H_ 00025 #define __NICECLUSTER_H_ 00026 00027 #include <BaseOverlay.h> 00028 #include <omnetpp.h> 00029 00030 class NiceCluster 00031 { 00032 00033 private: 00034 00035 /* set of cluster members */ 00036 std::set<TransportAddress> cluster; 00037 00038 /* leader of the cluster */ 00039 TransportAddress leader; 00040 00041 /* last time of leader transfer */ 00042 simtime_t lastLT; 00043 00044 /* if we are reasonably sure that the cluster leader is really the above node */ 00045 bool leaderConfirmed; 00046 00047 /* how many times we've sent leader heartbeats to the nodes in this cluster */ 00048 int leaderHeartbeatsSent; 00049 00050 typedef std::set<TransportAddress>::const_iterator ConstClusterIterator; 00051 typedef std::set<TransportAddress>::iterator ClusterIterator; 00052 00053 public: 00054 00055 NiceCluster(); 00056 00060 void add(const TransportAddress& member); 00061 00067 void clear(); 00068 00072 bool contains( const TransportAddress& member ); 00073 00077 int getSize(); 00078 00082 const TransportAddress& get( int i ); 00083 00088 void remove(const TransportAddress& member); 00089 00096 void setLeader(const TransportAddress& leader); 00097 00101 const TransportAddress& getLeader(); 00102 00106 std::set<TransportAddress>::const_iterator begin() const; 00107 00111 std::set<TransportAddress>::const_iterator end() const; 00112 00113 simtime_t getLastLT(); 00114 void setLastLT(); 00115 00120 bool isLeaderConfirmed(); 00121 00125 void confirmLeader(); 00126 00127 int getLeaderHeartbeatsSent(); 00128 00129 void setLeaderHeartbeatsSent(int heartbeats); 00130 00131 }; // NiceCluster 00132 00133 #endif /* _NICECLUSTER_H_ */