class ContextMonitor(object):
def __init__(self, presence = None):
super(ContextMonitor, self).__init__()
# Create the local context.
self._context = Context()
# Subscribe to Presence announcements.
if presence == None:
self._presence = Presence()
self._presence.connect()
else:
self._presence = presence
self._presence.subscribe('scavenger', self.receive_announcement)
def receive_announcement(self, peer_name, peer_address, service):
peer_name = peer_name.strip('\x00 ')
cpu_strength, cpu_cores, active_tasks, network_media = struct.unpack("!fIII", service.data)
peer = ScavengerPeer(peer_name, (peer_address, service.port),
cpu_strength, cpu_cores, active_tasks, network_media)
self._context.add(peer)
def get_peers(self):
return self._context.get_peers()
def has_peer(self, name):
return self._context.has_peer(name)
def increment_peer_activity(self, name):
self._context.increment_peer_activity(name)
def decrement_peer_activity(self, name):
self._context.decrement_peer_activity(name)
def shutdown(self):
self._presence.shutdown(True)
