77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2015 Yahoo! Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Keys extracted from the message properties when formatting...
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_MSG_PROPERTIES = tuple([
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'correlation_id',
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'delivery_info/routing_key',
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'type',
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])
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class DelayedPretty(object):
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"""Wraps a message and delays prettifying it until requested.
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TODO(harlowja): remove this when https://github.com/celery/kombu/pull/454/
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is merged and a release is made that contains it (since that pull
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request is equivalent and/or better than this).
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"""
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def __init__(self, message):
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self._message = message
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self._message_pretty = None
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def __str__(self):
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if self._message_pretty is None:
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self._message_pretty = _prettify_message(self._message)
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return self._message_pretty
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def _get_deep(properties, *keys):
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"""Get a final key among a list of keys (each with its own sub-dict)."""
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for key in keys:
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properties = properties[key]
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return properties
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def _prettify_message(message):
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"""Kombu doesn't currently have a useful ``__str__()`` or ``__repr__()``.
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This provides something decent(ish) for debugging (or other purposes) so
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that messages are more nice and understandable....
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"""
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if message.content_type is not None:
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properties = {
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'content_type': message.content_type,
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}
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else:
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properties = {}
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for name in _MSG_PROPERTIES:
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segments = name.split("/")
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try:
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value = _get_deep(message.properties, *segments)
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except (KeyError, ValueError, TypeError):
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pass
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else:
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if value is not None:
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properties[segments[-1]] = value
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if message.body is not None:
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properties['body_length'] = len(message.body)
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return "%(delivery_tag)s: %(properties)s" % {
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'delivery_tag': message.delivery_tag,
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'properties': properties,
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}
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