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"""Publishing
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2012 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from IPython.config import Configurable
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from IPython.utils.jsonutil import json_clean
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from IPython.utils.traitlets import Instance, Dict, CBytes
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from IPython.zmq.serialize import serialize_object
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from IPython.zmq.session import Session, extract_header
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#-----------------------------------------------------------------------------
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# Code
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#-----------------------------------------------------------------------------
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class ZMQDataPublisher(Configurable):
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topic = topic = CBytes(b'datapub')
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session = Instance(Session)
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pub_socket = Instance('zmq.Socket')
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parent_header = Dict({})
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def set_parent(self, parent):
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"""Set the parent for outbound messages."""
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self.parent_header = extract_header(parent)
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def publish_data(self, data):
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"""publish a data_message on the IOPub channel
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Parameters
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----------
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data : dict
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The data to be published. Think of it as a namespace.
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"""
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session = self.session
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buffers = serialize_object(data,
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buffer_threshold=session.buffer_threshold,
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item_threshold=session.item_threshold,
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)
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content = json_clean(dict(keys=data.keys()))
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session.send(self.pub_socket, 'data_message', content=content,
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parent=self.parent_header,
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buffers=buffers,
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ident=self.topic,
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)
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def publish_data(data):
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"""publish a data_message on the IOPub channel
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Parameters
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----------
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data : dict
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The data to be published. Think of it as a namespace.
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"""
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from IPython.zmq.zmqshell import ZMQInteractiveShell
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ZMQInteractiveShell.instance().data_pub.publish_data(data)
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