Example #1
0
 def start_coord(self, raw_data, weight):
     """ starts the coordinator. 
     @param raw_data is the data that coord-node has to process.
     @param weight is the weight of this node.
     @param ls is a list that contains all the nodes.
     """
     # set the weight of the node to protocol
     self.set_weight(weight)
     # read all waiting, raw data and pass it to a sketch
     self._read_data(raw_data)
     # update last statistics vector to hold the localstats
     self._set_lastStatistics(self.ams.sketch)
     # update slack vector to 0
     VectorOps.init_empty_vector(self.cm.slack, \
                                 self.cm.lastStatistics)
     self.all_vectors[self.node_name] = \
                     [self.weight, self.cm.lastStatistics]
Example #2
0
 def start(self, raw_data, weight):
     """ starts the protocol. Initialization phase of the 
     coordinator-based algorithm is implemented, exactly as it is
     presented in the paper [lift2006].
     @param raw_data is a list that contains items of unprocessed
     data.
     """
     # first of all, set the weight of the node to protocol
     self.set_weight(weight)
     # read all waiting, raw data and pass it to a sketch
     self._read_data(raw_data)
     # update last statistics vector to hold the localstats
     self._set_lastStatistics(self.ams.sketch)
     # update slack vector to 0
     VectorOps.init_empty_vector(self.cm.slack, \
                                 self.cm.lastStatistics)
     # create an init message
     self.init_msg = self.create_init_msg()
     # send an 'INIT'-type message to coordinator
     self.sendMessage(self.init_msg)
     # finally set change state
     self.set_state('UNSAFE')
Example #3
0
 def start(self, raw_data, weight):
     """ starts the protocol. Initialization phase of the 
     coordinator-based algorithm is implemented, exactly as it is
     presented in the paper [lift2006].
     @param raw_data is a list that contains items of unprocessed
     data.
     """
     # first of all, set the weight of the node to protocol
     self.set_weight(weight)
     # read all waiting, raw data and pass it to a sketch
     self._read_data(raw_data)
     # update last statistics vector to hold the localstats
     self._set_lastStatistics(self.ams.sketch)
     # update slack vector to 0
     VectorOps.init_empty_vector(self.cm.slack, \
                                 self.cm.lastStatistics)
     # create an init message
     self.init_msg = self.create_init_msg()
     # send an 'INIT'-type message to coordinator
     self.sendMessage(self.init_msg)
     # finally set change state
     self.set_state('UNSAFE')
Example #4
0
 def initialization(self):
     """ inits the centralized protocol. """
     # first of all set the weight
     self.weight = self.getNodeWeight()
     # hold the initial statistics vector to last statistics
     self.cm.lastStatistics = self.getDataFromNode()
     # set slack vector to 0
     self.cm.slack = VectorOps.init_empty_vector(self.cm.slack, \
                     self.cm.lastStatistics)
     # create then init message
     self.init_msg = INIT(self.node_name, \
                             self.COORD, \
                             self.cm.lastStatistics,\
                             self.weight)
     # send message to network
     self.sendMessage(self.init_msg)
Example #5
0
 def initialization(self):
     """ inits the centralized protocol. """
     # first of all set the weight
     self.weight = self.getNodeWeight()
     # hold the initial statistics vector to last statistics
     self.cm.lastStatistics = self.getDataFromNode()
     # set slack vector to 0
     self.cm.slack = VectorOps.init_empty_vector(self.cm.slack, \
                     self.cm.lastStatistics)
     # create then init message
     self.init_msg = INIT(self.node_name, \
                             self.COORD, \
                             self.cm.lastStatistics,\
                             self.weight)
     # send message to network
     self.sendMessage(self.init_msg)