def __init__(self, host_ip):
"""Initializes the attributes
:param host_ip: The ip of the network interface where this service is running.
:return: None
"""
# initializes the Sender Thread
self._sending_thread = UDPSenderThread()
# initializes the udpserver with our ThreadedUDPMulticastRequestHandler
# as arguments for the constructor of the RequestHandler we have to pass
# the update method of the Observable Implementation and the ip-address of the network interface
# where this service is running.
self.udp_server = UDPServer(MULTICAST_GROUP, lambda *args, **keys: ThreadedUDPMulticastRequestHandler(
UDPObservableSingleton.instance.observable.update_received_list,
host_ip, self._sending_thread.expand_timeout, *args, **keys))
self._receiver_thread = Thread(target=self.udp_server.serve_forever, daemon=True)
self._logger = Log.get_logger(self.__class__.__name__)
class UDPManager(object):
"""This class starts and stops the sending and receiving threads.
"""
def __init__(self, host_ip):
"""Initializes the attributes
:param host_ip: The ip of the network interface where this service is running.
:return: None
"""
# initializes the Sender Thread
self._sending_thread = UDPSenderThread()
# initializes the udpserver with our ThreadedUDPMulticastRequestHandler
# as arguments for the constructor of the RequestHandler we have to pass
# the update method of the Observable Implementation and the ip-address of the network interface
# where this service is running.
self.udp_server = UDPServer(MULTICAST_GROUP, lambda *args, **keys: ThreadedUDPMulticastRequestHandler(
UDPObservableSingleton.instance.observable.update_received_list,
host_ip, self._sending_thread.expand_timeout, *args, **keys))
self._receiver_thread = Thread(target=self.udp_server.serve_forever, daemon=True)
self._logger = Log.get_logger(self.__class__.__name__)
def start(self):
if not self._sending_thread.is_alive():
self._logger.info("Started SenderThread.")
self._sending_thread.start()
if not self._receiver_thread.is_alive():
self._logger.info("Started UDPServer.")
self._receiver_thread.start()
def stop(self):
if self._sending_thread.is_alive():
self._logger.info("Stopping SenderThread...")
self._sending_thread.stop()
if self._receiver_thread.is_alive():
self._logger.info("Stopping UDPServer...")
self.udp_server.shutdown()
self.udp_server.server_close()