66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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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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import json
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from oslo_db.sqlalchemy import models
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from oslo_utils import timeutils
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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 as sa_orm
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from sqlalchemy import types as sa_types
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class _DeckhandBase(models.ModelBase, models.TimestampMixin):
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pass
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# Declarative base class which maintains a catalog of classes and tables
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# relative to that base.
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API_BASE = declarative.declarative_base(cls=_DeckhandBase)
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class JSONEncodedDict(sa_types.TypeDecorator):
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"""Represents an immutable structure as a json-encoded string.
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Usage::
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JSONEncodedDict(255)
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"""
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impl = sa_types.VARCHAR
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def process_bind_param(self, value, dialect):
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if value is not None:
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value = json.dumps(value)
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return value
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def process_result_value(self, value, dialect):
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if value is not None:
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value = json.loads(value)
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return value
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class Document(API_BASE):
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__tablename__ = 'document'
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id = sa.Column(sa.String(255), primary_key=True, autoincrement=True)
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document_schema = sa.Column(sa.String(64), nullable=False)
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# Represents metadata.name parameter.
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instance_key = sa.Column(sa.String(64), nullable=False, unique=True)
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metadata = sa.Column(JSONEncodedDict(), nullable=False)
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data = sa.Column(JSONEncodedDict(), nullable=False)
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