NiceCluster.h

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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_ */