85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import print_function
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from __future__ import division
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from __future__ import absolute_import
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import datetime
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from oslo_db.sqlalchemy import models
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from oslo_utils import uuidutils
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import sqlalchemy as sa
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from sqlalchemy.ext import declarative
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from sqlalchemy import orm
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class CongressBase(models.ModelBase):
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"""Base class for Congress Models."""
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__table_args__ = {'mysql_engine': 'InnoDB'}
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@declarative.declared_attr
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def __tablename__(cls):
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# NOTE(jkoelker) use the pluralized name of the class as the table
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return cls.__name__.lower() + 's'
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def __iter__(self):
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self._i = iter(orm.object_mapper(self).columns)
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return self
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def next(self):
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n = next(self._i).name
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return n, getattr(self, n)
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def __repr__(self):
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"""sqlalchemy based automatic __repr__ method."""
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items = ['%s=%r' % (col.name, getattr(self, col.name))
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for col in self.__table__.columns]
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return "<%s.%s[object at %x] {%s}>" % (self.__class__.__module__,
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self.__class__.__name__,
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id(self), ', '.join(items))
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class HasTenant(object):
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"""Tenant mixin, add to subclasses that have a tenant."""
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# NOTE(jkoelker) tenant_id is just a free form string ;(
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tenant_id = sa.Column(sa.String(255))
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class HasId(object):
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"""id mixin, add to subclasses that have an id."""
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id = sa.Column(sa.String(36),
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primary_key=True,
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default=uuidutils.generate_uuid)
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# TODO(arosen) move this somewhere better later...
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def _get_date():
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return datetime.datetime.now()
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class HasAudit(object):
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created_at = sa.Column(sa.DateTime, default=_get_date, nullable=False)
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updated_at = sa.Column(sa.DateTime, onupdate=_get_date, nullable=True)
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deleted_at = sa.Column(sa.DateTime, nullable=True)
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deleted = sa.Column(sa.String(length=36),
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server_default='', default='', nullable=True)
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BASE = declarative.declarative_base(cls=CongressBase)
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