Ejemplo n.º 1
0
    public StructuredNode(AHAddress add, string realm):base(add,realm)
    {
      /**
       * Here are the ConnectionOverlords
       */ 
      _leafco = new LeafConnectionOverlord(this);
      AddConnectionOverlord(_leafco);
      _snco = new StructuredNearConnectionOverlord(this);
      AddConnectionOverlord(_snco);
      _ssco = new StructuredShortcutConnectionOverlord(this);
      AddConnectionOverlord(_ssco);
#if !BRUNET_SIMULATOR
      _iphandler = new IPHandler();
      _iphandler.Subscribe(this, null);
      AddTADiscovery(new LocalDiscovery(this, Realm, _rpc, _iphandler));
#endif

      /**
       * Turn on some protocol support : 
       */
      /// Turn on Packet Forwarding Support :
      GetTypeSource(PType.Protocol.Forwarding).Subscribe(new PacketForwarder(this), null);
      AHHandler = new AHHandler(this);
      GetTypeSource(PType.Protocol.AH).Subscribe(AHHandler, this);
      GetTypeSource(PType.Protocol.Echo).Subscribe(new EchoHandler(), this);
      
      //Add the standard RPC handlers:
      _rpc.AddHandler("sys:ctm", new CtmRequestHandler(this));
      sys_link = new ConnectionPacketHandler(this);
      _rpc.AddHandler("sys:link", sys_link);
      _rpc.AddHandler("trace", new TraceRpcHandler(this));
      //Serve some public information about our ConnectionTable
      _rpc.AddHandler("ConnectionTable", new ConnectionTableRpc(ConnectionTable, _rpc));
      //Add a map-reduce handlers:
      _mr_handler = new MapReduceHandler(this);
      //Subscribe it with the RPC handler:
      _rpc.AddHandler("mapreduce", _mr_handler);

      //Subscribe map-reduce tasks
      _mr_handler.SubscribeTask(new MapReduceTrace(this));
      _mr_handler.SubscribeTask(new MapReduceRangeCounter(this));

      
      /*
       * Handle Node state changes.
       */
      StateChangeEvent += delegate(Node n, Node.ConnectionState s) {
        if( s == Node.ConnectionState.Leaving ) {
          //Start our StructuredNode specific leaving:
          Leave();
        }
      };

      _connection_table.ConnectionEvent += new EventHandler(this.EstimateSize);
      _connection_table.ConnectionEvent += new EventHandler(this.UpdateNeighborStatus);
      _connection_table.DisconnectionEvent += new EventHandler(this.EstimateSize);
      _connection_table.DisconnectionEvent += new EventHandler(this.UpdateNeighborStatus);
    }
Ejemplo n.º 2
0
Archivo: Node.cs Proyecto: hseom/brunet
    /**
     * Create a node with a given local address and
     * a set of Routers.
     * @param addr Address for the local node
     * @param realm the Realm or Namespace this node belongs to
     */

    protected Node(Address addr, string realm)
    {
      //Start with the address hashcode:

      _sync = new Object();
      lock(_sync)
      {
        DemuxHandler = new DemuxHandler();
        /*
         * Make all the hashtables : 
         */
        _local_add = AddressParser.Parse( addr.ToMemBlock() );
        _realm = String.Intern(realm);
        
        /* Set up the heartbeat */
        _heart_period = 500; //500 ms, or 1/2 second.
        _heartbeat_handlers = new Dictionary<EventHandler, Brunet.Util.FuzzyEvent>();

        _task_queue = new NodeTaskQueue(this);
        _packet_queue = new BCon.LFBlockingQueue<IAction>();

        _running = 0;
        _send_pings = 1;
        _LOG = ProtocolLog.Monitor.Enabled;

        _connection_table = new ConnectionTable(new DefaultERPolicy(addr));
        _connection_table.ConnectionEvent += this.ConnectionHandler;
        LockMgr = new ConnectionLockManager(_connection_table);

        //We start off offline.
        _con_state = Node.ConnectionState.Offline;
        
        /* Set up the ReqrepManager as a filter */
        _rrm = new ReqrepManager(this.ToString());
        DemuxHandler.GetTypeSource(PType.Protocol.ReqRep).Subscribe(_rrm, null);
        _rrm.Subscribe(this, null);
        this.HeartBeatEvent += _rrm.TimeoutChecker;
        /* Set up RPC */
        _rpc = new RpcManager(_rrm);
        DemuxHandler.GetTypeSource( PType.Protocol.Rpc ).Subscribe(_rpc, null);
        //Add a map-reduce handlers:
        _mr_handler = new MR.MapReduceHandler(this);
        //Subscribe it with the RPC handler:
        _rpc.AddHandler("mapreduce", _mr_handler);

        /*
         * Where there is a change in the Connections, we might have a state
         * change
         */
        _connection_table.ConnectionEvent += this.CheckForStateChange;
        _connection_table.DisconnectionEvent += this.CheckForStateChange;

#if !BRUNET_SIMULATOR
        _codeinjection = new Brunet.Services.CodeInjection(this);
        _codeinjection.LoadLocalModules();
#endif
        /*
         * We must later make sure the EdgeEvent events from
         * any EdgeListeners are connected to _cph.EdgeHandler
         */
        /**
         * Here are the protocols that every edge must support
         */
        /* Here are the transport addresses */
        _remote_ta = ImmutableList<TransportAddress>.Empty;
        /*@throw ArgumentNullException if the list ( new ArrayList()) is null.
         */
        /* EdgeListener's */
        _edgelistener_list = new ArrayList();
        _co_list = new List<ConnectionOverlord>();
        _edge_factory = new EdgeFactory();
        _ta_discovery = ImmutableList<Discovery>.Empty;
        StateChangeEvent += HandleTADiscoveryState;
        
        /* Initialize this at 15 seconds */
        _connection_timeout = new TimeSpan(0,0,0,0,15000);
        //Check the edges from time to time
        IAction cec_act = new HeartBeatAction(this, this.CheckEdgesCallback);
        _check_edges = Brunet.Util.FuzzyTimer.Instance.DoEvery(delegate(DateTime dt) {
          this.EnqueueAction(cec_act);
        }, 5000, 500);
      }
    }