115 lines
3.4 KiB
Python
115 lines
3.4 KiB
Python
# Copyright 2017 Catalyst IT Limited
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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 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 oslo_db.sqlalchemy import models as oslo_models
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import sqlalchemy as sa
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from sqlalchemy.ext import declarative
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from sqlalchemy.orm import attributes
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from qinling import context
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from qinling.utils import common
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def id_column():
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return sa.Column(
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sa.String(36),
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primary_key=True,
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default=common.generate_unicode_uuid
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)
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def get_project_id():
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return context.get_ctx().projectid
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class _QinlingModelBase(oslo_models.ModelBase, oslo_models.TimestampMixin):
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"""Base class for all Qinling SQLAlchemy DB Models."""
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__table__ = None
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__hash__ = object.__hash__
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def __init__(self, **kwargs):
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for key, value in kwargs.items():
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setattr(self, key, value)
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def __eq__(self, other):
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if type(self) is not type(other):
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return False
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for col in self.__table__.columns:
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# In case of single table inheritance a class attribute
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# corresponding to a table column may not exist so we need
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# to skip these attributes.
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if (hasattr(self, col.name) and hasattr(other, col.name) and
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getattr(self, col.name) != getattr(other, col.name)):
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return False
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return True
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def __ne__(self, other):
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return not self.__eq__(other)
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def to_dict(self):
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"""sqlalchemy based automatic to_dict method."""
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d = {}
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# If a column is unloaded at this point, it is
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# probably deferred. We do not want to access it
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# here and thereby cause it to load.
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unloaded = attributes.instance_state(self).unloaded
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for col in self.__table__.columns:
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if col.name not in unloaded and hasattr(self, col.name):
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d[col.name] = getattr(self, col.name)
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common.datetime_to_str(d, 'created_at')
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common.datetime_to_str(d, 'updated_at')
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return d
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def get_clone(self):
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"""Clones current object, loads all fields and returns the result."""
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m = self.__class__()
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for col in self.__table__.columns:
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if hasattr(self, col.name):
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setattr(m, col.name, getattr(self, col.name))
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setattr(m, 'created_at', getattr(self, 'created_at').isoformat(' '))
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updated_at = getattr(self, 'updated_at')
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if updated_at:
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setattr(m, 'updated_at', updated_at.isoformat(' '))
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return m
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def __repr__(self):
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return '%s %s' % (type(self).__name__, self.to_dict().__repr__())
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QinlingModelBase = declarative.declarative_base(cls=_QinlingModelBase)
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class QinlingSecureModelBase(QinlingModelBase):
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"""Base class for all secure models."""
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__abstract__ = True
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id = id_column()
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project_id = sa.Column(
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sa.String(80),
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nullable=False,
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default=get_project_id
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)
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