def testUnmaskedDataFrame(self):
parser = FrameParser(kind=2)
f = parser.encode('Hello')
self.assertEqual(f.opcode, 0x1)
self.assertEqual(f.payload_length, 5)
self.assertFalse(f.masked)
self.assertEqual(len(f.msg), 7)
self.assertEqual(int2bytes(0x81,0x05,0x48,0x65,0x6c,0x6c,0x6f), f.msg)
f1 = parser.encode('Hel', final=False)
f2 = parser.continuation('lo', final=True)
self.assertEqual(int2bytes(0x01,0x03,0x48,0x65,0x6c), f1.msg)
self.assertEqual(int2bytes(0x80,0x02,0x6c,0x6f), f2.msg)
def testUnmaskedDataFrame(self):
parser = FrameParser(kind=2)
f = parser.encode('Hello')
self.assertEqual(f.opcode, 0x1)
self.assertEqual(f.payload_length, 5)
self.assertFalse(f.masked)
self.assertEqual(len(f.msg), 7)
self.assertEqual(int2bytes(0x81, 0x05, 0x48, 0x65, 0x6c, 0x6c, 0x6f),
f.msg)
f1 = parser.encode('Hel', final=False)
f2 = parser.continuation('lo', final=True)
self.assertEqual(int2bytes(0x01, 0x03, 0x48, 0x65, 0x6c), f1.msg)
self.assertEqual(int2bytes(0x80, 0x02, 0x6c, 0x6f), f2.msg)
class MailboxConsumer(ProtocolConsumer):
'''The :class:`pulsar.ProtocolConsumer` for internal message passing
between actors. Encoding and decoding uses the unmasked websocket
protocol.'''
def connection_made(self, connection):
self._pending_responses = {}
self._parser = FrameParser(kind=2)
actor = get_actor()
if actor.is_arbiter():
self.connection.bind_event('connection_lost', None,
self._connection_lost)
def request(self, command, sender, target, args, kwargs):
'''Used by the server to send messages to the client.'''
req = Message.command(command, sender, target, args, kwargs)
self.start_request(req)
return req.future
#######################################################################
## PROTOCOL CONSUMER IMPLEMENTATION
def data_received(self, data):
# Feed data into the parser
msg = self._parser.decode(data)
while msg:
try:
message = pickle.loads(msg.body)
except Exception as e:
raise ProtocolError('Could not decode message body: %s' % e)
maybe_async(self._responde(message), event_loop=self.event_loop)
msg = self._parser.decode()
def start_request(self, req=None):
if req:
if req.future and 'ack' in req.data:
self._pending_responses[req.data['ack']] = req.future
try:
self._write(req)
except Exception as e:
req.future.callback(e)
else:
self._write(req)
start = start_request
########################################################################
## INTERNALS
def _connection_lost(self, failure):
actor = get_actor()
if actor.is_running():
failure.log(msg='Connection lost with actor.', level='warning')
else:
failure.mute()
return failure
def _responde(self, message):
actor = get_actor()
command = message.get('command')
#actor.logger.debug('handling %s', command)
if command == 'callback':
# this is a callback
self._callback(message.get('ack'), message.get('result'))
else:
try:
target = actor.get_actor(message['target'])
if target is None:
raise CommandError('Cannot execute "%s" in %s. Unknown '
'actor %s' % (command, actor,
message['target']))
# Get the caller proxy without throwing
caller = get_proxy(actor.get_actor(message['sender']),
safe=True)
if isinstance(target, ActorProxy):
# route the message to the actor proxy
if caller is None:
raise CommandError(
"'%s' got message from unknown '%s'"
% (actor, message['sender']))
result = yield actor.send(target, command,
*message['args'],
**message['kwargs'])
else:
actor = target
command = get_command(command)
req = CommandRequest(target, caller, self.connection)
result = yield command(req, message['args'],
message['kwargs'])
except Exception:
result = Failure(sys.exc_info())
if message.get('ack'):
req = Message.callback(result, message['ack'])
self.start_request(req)
def _callback(self, ack, result):
if not ack:
raise ProtocolError('A callback without id')
try:
pending = self._pending_responses.pop(ack)
except KeyError:
raise KeyError('Callback %s not in pending callbacks' % ack)
pending.callback(result)
def _write(self, req):
obj = pickle.dumps(req.data, protocol=2)
data = self._parser.encode(obj, opcode=0x2).msg
try:
self.transport.write(data)
except IOError:
actor = get_actor()
if actor.is_running():
raise