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85 lines
2.2 KiB
Python
85 lines
2.2 KiB
Python
# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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"""Publishing native (typically pickled) objects.
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"""
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import warnings
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from traitlets import Any, CBytes, Dict, Instance
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from traitlets.config import Configurable
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from ipykernel.jsonutil import json_clean
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try:
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# available since ipyparallel 5.0.0
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from ipyparallel.serialize import serialize_object
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except ImportError:
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# Deprecated since ipykernel 4.3.0
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from ipykernel.serialize import serialize_object
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from jupyter_client.session import Session, extract_header
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warnings.warn(
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"ipykernel.datapub is deprecated. It has moved to ipyparallel.datapub",
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DeprecationWarning,
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stacklevel=2,
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)
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class ZMQDataPublisher(Configurable):
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"""A zmq data publisher."""
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topic = topic = CBytes(b"datapub")
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session = Instance(Session, allow_none=True)
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pub_socket = Any(allow_none=True)
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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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assert session is not None
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buffers = serialize_object(
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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=list(data.keys())))
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session.send(
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self.pub_socket,
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"data_message",
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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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warnings.warn(
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"ipykernel.datapub is deprecated. It has moved to ipyparallel.datapub",
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DeprecationWarning,
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stacklevel=2,
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)
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from ipykernel.zmqshell import ZMQInteractiveShell
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ZMQInteractiveShell.instance().data_pub.publish_data(data)
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