def on_recv(self, callback, copy=True):
"""Register a callback for when a message is ready to recv.
There can be only one callback registered at a time, so each
call to `on_recv` replaces previously registered callbacks.
on_recv(None) disables recv event polling.
Use on_recv_stream(callback) instead, to register a callback that will receive
both this ZMQStream and the message, instead of just the message.
Parameters
----------
callback : callable
callback must take exactly one argument, which will be a
list, as returned by socket.recv_multipart()
if callback is None, recv callbacks are disabled.
copy : bool
copy is passed directly to recv, so if copy is False,
callback will receive Message objects. If copy is True,
then callback will receive bytes/str objects.
Returns : None
"""
self._check_closed()
assert callback is None or callable(callback)
self._recv_callback = stack_context.wrap(callback)
self._recv_copy = copy
if callback is None:
self._drop_io_state(self.io_loop.READ)
else:
self._add_io_state(self.io_loop.READ)
def on_recv(self, callback, copy=True):
"""Register a callback for when a message is ready to recv.
There can be only one callback registered at a time, so each
call to `on_recv` replaces previously registered callbacks.
on_recv(None) disables recv event polling.
Use on_recv_stream(callback) instead, to register a callback that will receive
both this ZMQStream and the message, instead of just the message.
Parameters
----------
callback : callable
callback must take exactly one argument, which will be a
list, as returned by socket.recv_multipart()
if callback is None, recv callbacks are disabled.
copy : bool
copy is passed directly to recv, so if copy is False,
callback will receive Message objects. If copy is True,
then callback will receive bytes/str objects.
Returns : None
"""
self._check_closed()
assert callback is None or callable(callback)
self._recv_callback = stack_context.wrap(callback)
self._recv_copy = copy
if callback is None:
self._drop_io_state(self.io_loop.READ)
else:
self._add_io_state(self.io_loop.READ)
def __init__(self, m2req, stream, request_callback, no_keep_alive=False,
xheaders=False):
self.m2req = m2req
self.stream = stream
self.request_callback = request_callback
self.no_keep_alive = no_keep_alive
self.xheaders = xheaders
self._request = None
self._request_finished = False
self._execute = stack_context.wrap(self._begin_request)
self._execute()
def __init__(self,
m2req,
stream,
request_callback,
no_keep_alive=False,
xheaders=False):
self.m2req = m2req
self.stream = stream
self.request_callback = request_callback
self.no_keep_alive = no_keep_alive
self.xheaders = xheaders
self._request = None
self._request_finished = False
self._execute = stack_context.wrap(self._begin_request)
self._execute()
def on_send(self, callback):
"""Register a callback to be called on each send
There will be two arguments::
callback(msg, status)
* `msg` will be the list of sendable objects that was just sent
* `status` will be the return result of socket.send_multipart(msg) -
MessageTracker or None.
Non-copying sends return a MessageTracker object whose
`done` attribute will be True when the send is complete.
This allows users to track when an object is safe to write to
again.
The second argument will always be None if copy=True
on the send.
Use on_send_stream(callback) to register a callback that will be passed
this ZMQStream as the first argument, in addition to the other two.
on_send(None) disables recv event polling.
Parameters
----------
callback : callable
callback must take exactly two arguments, which will be
the message being sent (always a list),
and the return result of socket.send_multipart(msg) -
MessageTracker or None.
if callback is None, send callbacks are disabled.
"""
self._check_closed()
assert callback is None or callable(callback)
self._send_callback = stack_context.wrap(callback)
def on_send(self, callback):
"""Register a callback to be called on each send
There will be two arguments::
callback(msg, status)
* `msg` will be the list of sendable objects that was just sent
* `status` will be the return result of socket.send_multipart(msg) -
MessageTracker or None.
Non-copying sends return a MessageTracker object whose
`done` attribute will be True when the send is complete.
This allows users to track when an object is safe to write to
again.
The second argument will always be None if copy=True
on the send.
Use on_send_stream(callback) to register a callback that will be passed
this ZMQStream as the first argument, in addition to the other two.
on_send(None) disables recv event polling.
Parameters
----------
callback : callable
callback must take exactly two arguments, which will be
the message being sent (always a list),
and the return result of socket.send_multipart(msg) -
MessageTracker or None.
if callback is None, send callbacks are disabled.
"""
self._check_closed()
assert callback is None or callable(callback)
self._send_callback = stack_context.wrap(callback)
def set_close_callback(self, callback):
"""Call the given callback when the stream is closed."""
self._close_callback = stack_context.wrap(callback)
def set_close_callback(self, callback):
"""Call the given callback when the stream is closed."""
self._close_callback = stack_context.wrap(callback)