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# -*- coding: utf-8 -*-
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from Queue import Queue
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from IPython.zmq.session import Session, Message, extract_header
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from IPython.utils.traitlets import Type, HasTraits, TraitType
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from IPython.zmq.kernelmanager import KernelManager, SubSocketChannel, \
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XReqSocketChannel, RepSocketChannel, HBSocketChannel
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MetaHasTraits = type(HasTraits)
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class SubSocketChannel2p(SubSocketChannel):
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#---------------------------------------------------------------------------
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# 'SubSocketChannel' interface
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#---------------------------------------------------------------------------
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_msg = None
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queue = Queue(-1)
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def call_handlers(self, msg):
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self.queue.put(Message(msg))
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def get_msg(self):
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return self.queue.get()
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def was_called(self):
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return not self.queue.empty()
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class XReqSocketChannel2p(XReqSocketChannel):
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#---------------------------------------------------------------------------
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# 'XReqSocketChannel' interface
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#---------------------------------------------------------------------------
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_msg = None
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_called = False
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def call_handlers(self, msg):
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self._called = True
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self._msg = Message(msg)
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def get_msg(self):
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self._called = False
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return self._msg
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def was_called(self):
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return self._called
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class RepSocketChannel2p(RepSocketChannel):
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#---------------------------------------------------------------------------
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# 'XReqSocketChannel' interface
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#---------------------------------------------------------------------------
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_msg = None
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_called = False
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def call_handlers(self, msg):
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self._called = True
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self._msg = Message(msg)
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def get_msg(self):
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self._called = False
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return self._msg
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def was_called(self):
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return self._called
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class HBSocketChannel2p(HBSocketChannel):
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#---------------------------------------------------------------------------
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# 'XReqSocketChannel' interface
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#---------------------------------------------------------------------------
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_msg = None
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_called = False
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def call_handlers(self, msg):
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self._called = True
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self._msg = Message(msg)
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def get_msg(self):
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self._called = False
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return self._msg
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def was_called(self):
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return self._called
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class KernelManager2p(KernelManager):
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sub_channel_class = Type(SubSocketChannel2p)
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xreq_channel_class = Type(XReqSocketChannel2p)
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rep_channel_class = Type(RepSocketChannel2p)
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hb_channel_class = Type(HBSocketChannel2p)
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def start_kernel(self, *args, **kw):
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""" Reimplemented for proper heartbeat management.
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"""
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if self._xreq_channel is not None:
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self._xreq_channel.reset_first_reply()
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super(KernelManager2p, self).start_kernel(*args, **kw)
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