69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
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""" Defines a dummy socket implementing (part of) the zmq.Socket interface. """
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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import abc
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import warnings
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try:
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from queue import Queue # Py 3
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except ImportError:
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from Queue import Queue # Py 2
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import zmq
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from traitlets import HasTraits, Instance, Int
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from ipython_genutils.py3compat import with_metaclass
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#-----------------------------------------------------------------------------
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# Generic socket interface
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#-----------------------------------------------------------------------------
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class SocketABC(with_metaclass(abc.ABCMeta, object)):
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@abc.abstractmethod
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def recv_multipart(self, flags=0, copy=True, track=False):
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raise NotImplementedError
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@abc.abstractmethod
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def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
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raise NotImplementedError
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@classmethod
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def register(cls, other_cls):
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if other_cls is not DummySocket:
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warnings.warn("SocketABC is deprecated since ipykernel version 4.5.0.",
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DeprecationWarning, stacklevel=2)
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abc.ABCMeta.register(cls, other_cls)
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#-----------------------------------------------------------------------------
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# Dummy socket class
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#-----------------------------------------------------------------------------
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class DummySocket(HasTraits):
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""" A dummy socket implementing (part of) the zmq.Socket interface. """
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queue = Instance(Queue, ())
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message_sent = Int(0) # Should be an Event
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context = Instance(zmq.Context)
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def _context_default(self):
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return zmq.Context()
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#-------------------------------------------------------------------------
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# Socket interface
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#-------------------------------------------------------------------------
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def recv_multipart(self, flags=0, copy=True, track=False):
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return self.queue.get_nowait()
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def send_multipart(self, msg_parts, flags=0, copy=True, track=False):
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msg_parts = list(map(zmq.Message, msg_parts))
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self.queue.put_nowait(msg_parts)
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self.message_sent += 1
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def flush(self, timeout=1.0):
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"""no-op to comply with stream API"""
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pass
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SocketABC.register(DummySocket)
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