def invoke(self, method, args, content=None):
if self.closed:
self._raise_closed(self.reason)
frame = Frame(self.id, Method(method, *args))
self.outgoing.put(frame)
if method.content:
if content is None:
content = Content()
self.write_content(method.klass, content, self.outgoing)
try:
# here we depend on all nowait fields being named nowait
f = method.fields.byname["nowait"]
nowait = args[method.fields.index(f)]
except KeyError:
nowait = False
try:
if not nowait and method.responses:
resp = (yield self.responses.get()).payload
if resp.method.content:
content = yield read_content(self.responses)
else:
content = None
if resp.method in method.responses:
defer.returnValue(Message(resp.method, resp.args, content))
else:
raise ValueError(resp)
except QueueClosed as e:
if self.closed:
self._raise_closed(self.reason)
else:
raise e
def dispatch(self, queue):
frame = yield queue.get()
channel = yield self.channel(frame.channel)
payload = frame.payload
if payload.method.content:
content = yield read_content(queue)
else:
content = None
# Let the caller deal with exceptions thrown here.
message = Message(payload.method, payload.args, content)
self.delegate.dispatch(channel, message)