# -*- coding: utf-8 -*-
#
# Copyright 2016 Pedro Salgado
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""JSON encoders module."""
import calendar
import datetime
import inspect
import logging
import strict_rfc3339
LOGGER = logging.getLogger('steenzout.serialization.json.encoders')
[docs]def as_object(obj):
"""Return a JSON serializable type for ``o``.
Args:
obj (:py:class:`object`): the object to be serialized.
Raises:
:py:class:`AttributeError`:
when ``o`` is not a Python object.
Returns:
(dict): JSON serializable type for the given object.
"""
LOGGER.debug('as_object(%s)', obj)
if isinstance(obj, datetime.date):
return as_date(obj)
elif hasattr(obj, '__dict__'):
# populate dict with visible attributes
out = {k: obj.__dict__[k] for k in obj.__dict__ if not k.startswith('_')}
# populate dict with property names and values
for k, v in (
(p, getattr(obj, p))
for p, _ in inspect.getmembers(
obj.__class__,
lambda x: isinstance(x, property))
):
out[k] = v
return out
[docs]def as_date(dat):
"""Return the RFC3339 UTC string representation of the given date and time.
Args:
dat (:py:class:`datetime.date`): the object/type to be serialized.
Raises:
TypeError:
when ``o`` is not an instance of ``datetime.date``.
Returns:
(str) JSON serializable type for the given object.
"""
LOGGER.debug('as_date(%s)', dat)
return strict_rfc3339.timestamp_to_rfc3339_utcoffset(
calendar.timegm(dat.timetuple()))