class Channel(object):
"""Channel allows roles to communicate through messages.
Outgoing messages are sent to roles through remote and local endpoints.
Incoming messages are caught by the receiver and sent to local endpoints.
"""
def __init__(self, replicas=None, receiver=None):
self.receiver = receiver
self.replicas = replicas
if receiver is None:
self.receiver = Receiver(ADDRESS, self)
if replicas is None:
self.replicas = dict((ip, Remote(ip)) for ip in ADDRESS_OF_REPLICAS)
self.replicas[ADDRESS] = Local(Node(author=ADDRESS), self)
self.receiver.start()
def unicast(self, message):
self.replicas[message.receiver].send(message)
def loopback(self, message):
self.replicas[ADDRESS].send(message)
def broadcast(self, message):
for ip, replica in self.replicas.items():
message.receiver = ip
replica.send(message)
def __init__(self, replicas=None, receiver=None):
self.receiver = receiver
self.replicas = replicas
if receiver is None:
self.receiver = Receiver(ADDRESS, self)
if replicas is None:
self.replicas = dict((ip, Remote(ip)) for ip in ADDRESS_OF_REPLICAS)
self.replicas[ADDRESS] = Local(Node(author=ADDRESS), self)
self.receiver.start()