def hop_count_handler(self, event):
"""Hop count handler
Initialize only of the last hop count event is 4 clocks old. Otherwise
update the hop count and resend the new value only if its larger than
the previous hop count value.
Arguments:
event {HopCount} -- Hop count event instance
"""
# initialize
if (self.clock - self.last_hop_count_clock) > 4:
self.hop_count_initiator = False
self.hop_distance = event.hops + 1
self.hop_count = event.hops + 1
self.messages.append(
(self, HopCount(self.id, self.info_clock, self.hop_count)))
else:
# propagate value
if self.hop_count < event.hops:
self.hop_count = event.hops
if not self.hop_count_initiator:
self.messages.append((self,
HopCount(self.id, self.info_clock,
self.hop_count)))
self.last_hop_count_clock = self.clock
if self.verbose:
print('Fish #{} counts hops {} from #{}'.format(
self.id, event.hop_count, event.source_id))
def start_hop_count_handler(self, event):
"""Hop count start handler
Always accept a new start event for a hop count
Arguments:
event {StartHopCount} -- Hop count start event
"""
self.last_hop_count_clock = self.clock
self.hop_distance = 0
self.hop_count = 0
self.hop_count_initiator = True
self.initial_hop_count_clock = self.clock
self.messages.append(
(self, HopCount(self.id, self.info_clock, self.hop_count)))
if self.verbose:
print('Fish #{} counts hops {} from #{}'.format(
self.id, event.hop_count, event.source_id))
