4e514f41e5
The reflection module is now part of oslo.utils so we should remove our local version and use that version instead; this also goes for the uuidutils module which is now part of oslo.utils as well so we no longer need our local version copied from the incubator... Note that one reflection method `find_subclasses` which was to specific to taskflow is now moved to the misc utility module instead of its prior home in the reflection module. Change-Id: I069881c80b0b2916cc0c414992b80171f7eeb79f
98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
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# Copyright (C) 2013 Rackspace Hosting Inc. All Rights Reserved.
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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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from oslo.serialization import jsonutils
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from oslo.utils import timeutils
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from oslo.utils import uuidutils
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from sqlalchemy import Column, String, DateTime, Enum
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy import ForeignKey
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from sqlalchemy.orm import backref
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from sqlalchemy.orm import relationship
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from sqlalchemy import types as types
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from taskflow.persistence import logbook
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from taskflow import states
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BASE = declarative_base()
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# TODO(harlowja): remove when oslo.db exists
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class TimestampMixin(object):
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created_at = Column(DateTime, default=timeutils.utcnow)
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updated_at = Column(DateTime, onupdate=timeutils.utcnow)
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class Json(types.TypeDecorator):
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impl = types.Text
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def process_bind_param(self, value, dialect):
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return jsonutils.dumps(value)
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def process_result_value(self, value, dialect):
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return jsonutils.loads(value)
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class ModelBase(TimestampMixin):
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"""Base model for all taskflow objects."""
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uuid = Column(String, default=uuidutils.generate_uuid,
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primary_key=True, nullable=False, unique=True)
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name = Column(String, nullable=True)
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meta = Column(Json, nullable=True)
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class LogBook(BASE, ModelBase):
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"""Represents a logbook for a set of flows."""
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__tablename__ = 'logbooks'
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# Relationships
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flowdetails = relationship("FlowDetail",
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single_parent=True,
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backref=backref("logbooks",
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cascade="save-update, delete, "
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"merge"))
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class FlowDetail(BASE, ModelBase):
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__tablename__ = 'flowdetails'
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# Member variables
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state = Column(String)
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# Relationships
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parent_uuid = Column(String, ForeignKey('logbooks.uuid'))
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atomdetails = relationship("AtomDetail",
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single_parent=True,
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backref=backref("flowdetails",
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cascade="save-update, delete, "
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"merge"))
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class AtomDetail(BASE, ModelBase):
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__tablename__ = 'atomdetails'
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# Member variables
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atom_type = Column(Enum(*logbook.ATOM_TYPES, name='atom_types'))
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state = Column(String)
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intention = Column(Enum(*states.INTENTIONS, name='intentions'))
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results = Column(Json)
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failure = Column(Json)
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version = Column(Json)
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# Relationships
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parent_uuid = Column(String, ForeignKey('flowdetails.uuid'))
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