##// END OF EJS Templates
handle the new status messages in IPython.parallel...
handle the new status messages in IPython.parallel avoids creating implicit tasks in the Client’s metadata and Hub’s task db when status messages arrive.

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client.py
87 lines | 3.0 KiB | text/x-python | PythonLexer
"""A client for in-process kernels."""
#-----------------------------------------------------------------------------
# Copyright (C) 2012 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
# IPython imports
from IPython.utils.traitlets import Type, Instance
from IPython.kernel.clientabc import KernelClientABC
from IPython.kernel.client import KernelClient
# Local imports
from .channels import (
InProcessShellChannel,
InProcessIOPubChannel,
InProcessHBChannel,
InProcessStdInChannel,
)
#-----------------------------------------------------------------------------
# Main kernel Client class
#-----------------------------------------------------------------------------
class InProcessKernelClient(KernelClient):
"""A client for an in-process kernel.
This class implements the interface of
`IPython.kernel.clientabc.KernelClientABC` and allows
(asynchronous) frontends to be used seamlessly with an in-process kernel.
See `IPython.kernel.client.KernelClient` for docstrings.
"""
# The classes to use for the various channels.
shell_channel_class = Type(InProcessShellChannel)
iopub_channel_class = Type(InProcessIOPubChannel)
stdin_channel_class = Type(InProcessStdInChannel)
hb_channel_class = Type(InProcessHBChannel)
kernel = Instance('IPython.kernel.inprocess.ipkernel.InProcessKernel')
#--------------------------------------------------------------------------
# Channel management methods
#--------------------------------------------------------------------------
def start_channels(self, *args, **kwargs):
super(InProcessKernelClient, self).start_channels(self)
self.kernel.frontends.append(self)
@property
def shell_channel(self):
if self._shell_channel is None:
self._shell_channel = self.shell_channel_class(self)
return self._shell_channel
@property
def iopub_channel(self):
if self._iopub_channel is None:
self._iopub_channel = self.iopub_channel_class(self)
return self._iopub_channel
@property
def stdin_channel(self):
if self._stdin_channel is None:
self._stdin_channel = self.stdin_channel_class(self)
return self._stdin_channel
@property
def hb_channel(self):
if self._hb_channel is None:
self._hb_channel = self.hb_channel_class(self)
return self._hb_channel
#-----------------------------------------------------------------------------
# ABC Registration
#-----------------------------------------------------------------------------
KernelClientABC.register(InProcessKernelClient)