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# Copyright 2017 Huawei Technologies Co.,LTD.
# All Rights Reserved.
#
#    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.

import datetime

import wsme
from wsme import types as wtypes


class APIBase(wtypes.Base):
    created_at = wsme.wsattr(datetime.datetime, readonly=True)
    """The time in UTC at which the object is created"""

    updated_at = wsme.wsattr(datetime.datetime, readonly=True)
    """The time in UTC at which the object is updated"""

    def as_dict(self):
        """Render this object as a dict of its fields."""
        return dict((k, getattr(self, k))
                    for k in self.fields
                    if hasattr(self, k) and getattr(self, k) != wsme.Unset)