156 lines
4.7 KiB
Python
156 lines
4.7 KiB
Python
# Copyright (c) 2013 Mirantis, Inc.
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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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"""
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SQLAlchemy models for glazierapi data
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"""
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import anyjson
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from sqlalchemy import Column, String, BigInteger, TypeDecorator, ForeignKey
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from sqlalchemy.ext.compiler import compiles
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy import DateTime, Text
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from sqlalchemy.orm import relationship, backref, object_mapper
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from glazierapi.common import uuidutils
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from glazierapi.openstack.common import timeutils
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from glazierapi.db.session import get_session
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BASE = declarative_base()
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@compiles(BigInteger, 'sqlite')
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def compile_big_int_sqlite(type_, compiler, **kw):
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return 'INTEGER'
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class ModelBase(object):
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__protected_attributes__ = {"created", "updated"}
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created = Column(DateTime, default=timeutils.utcnow,
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nullable=False)
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updated = Column(DateTime, default=timeutils.utcnow,
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nullable=False, onupdate=timeutils.utcnow)
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def save(self, session=None):
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"""Save this object"""
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session = session or get_session()
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session.add(self)
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session.flush()
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def update(self, values):
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"""dict.update() behaviour."""
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for k, v in values.iteritems():
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self[k] = v
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def __getitem__(self, key):
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return getattr(self, key)
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def __iter__(self):
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self._i = iter(object_mapper(self).columns)
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return self
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def next(self):
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n = self._i.next().name
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return n, getattr(self, n)
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def keys(self):
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return self.__dict__.keys()
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def values(self):
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return self.__dict__.values()
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def items(self):
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return self.__dict__.items()
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def to_dict(self):
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dictionary = self.__dict__.copy()
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return {k: v for k, v in dictionary.iteritems()
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if k != '_sa_instance_state'}
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class JsonBlob(TypeDecorator):
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impl = Text
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def process_bind_param(self, value, dialect):
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return anyjson.serialize(value)
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def process_result_value(self, value, dialect):
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return anyjson.deserialize(value)
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class Environment(BASE, ModelBase):
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"""Represents a Environment in the metadata-store"""
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__tablename__ = 'environment'
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id = Column(String(32), primary_key=True, default=uuidutils.generate_uuid)
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name = Column(String(255), nullable=False)
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tenant_id = Column(String(32), nullable=False)
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description = Column(JsonBlob(), nullable=False, default='{}')
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def to_dict(self):
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dictionary = super(Environment, self).to_dict()
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del dictionary['description']
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return dictionary
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class Session(BASE, ModelBase):
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__tablename__ = 'session'
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id = Column(String(32), primary_key=True, default=uuidutils.generate_uuid)
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environment_id = Column(String(32), ForeignKey('environment.id'))
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environment = relationship(Environment,
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backref=backref('session'),
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uselist=False, lazy='joined')
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user_id = Column(String(36), nullable=False)
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state = Column(String(36), nullable=False)
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description = Column(JsonBlob(), nullable=False)
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def to_dict(self):
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dictionary = super(Session, self).to_dict()
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del dictionary['description']
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return dictionary
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class Status(BASE, ModelBase):
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__tablename__ = 'status'
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id = Column(String(32), primary_key=True, default=uuidutils.generate_uuid)
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entity_id = Column(String(32), nullable=False)
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entity = Column(String(10), nullable=False)
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environment_id = Column(String(32), ForeignKey('environment.id'))
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session_id = Column(String(32), ForeignKey('session.id'))
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text = Column(Text(), nullable=False)
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def register_models(engine):
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"""
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Creates database tables for all models with the given engine
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"""
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models = (Environment, Status, Session)
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for model in models:
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model.metadata.create_all(engine)
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def unregister_models(engine):
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"""
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Drops database tables for all models with the given engine
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"""
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models = (Environment, Status, Session)
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for model in models:
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model.metadata.drop_all(engine)
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