320ef645c8
Fixes bug #1070074 too much lazy loading on the default model. Removed those and only added lazy loading to queries that specifically need eager loading Change-Id: Ifa7446bddef855ae8e8b76040ba3336a53606215
137 lines
4.2 KiB
Python
137 lines
4.2 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Author: John Tran <jhtran@att.com>
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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 nova data.
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"""
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import json
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from sqlalchemy import Column, Integer, String, Table
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy import ForeignKey, DateTime
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from sqlalchemy.orm import relationship, backref
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from sqlalchemy.types import TypeDecorator, VARCHAR
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from urlparse import urlparse
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import ceilometer.openstack.common.cfg as cfg
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from ceilometer.openstack.common import timeutils
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sql_opts = [
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cfg.IntOpt('mysql_engine',
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default='InnoDB',
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help='MySQL engine')
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]
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cfg.CONF.register_opts(sql_opts)
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def table_args():
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engine_name = urlparse(cfg.CONF.database_connection).scheme
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if engine_name == 'mysql':
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return {'mysql_engine': cfg.CONF.mysql_engine}
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return None
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class JSONEncodedDict(TypeDecorator):
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"Represents an immutable structure as a json-encoded string."
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impl = 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 CeilometerBase(object):
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"""Base class for Ceilometer Models."""
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__table_args__ = table_args()
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__table_initialized__ = False
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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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Base = declarative_base(cls=CeilometerBase)
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sourceassoc = Table('sourceassoc', Base.metadata,
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Column('meter_id', Integer, ForeignKey("meter.id")),
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Column('project_id', String(255), ForeignKey("project.id")),
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Column('resource_id', String(255), ForeignKey("resource.id")),
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Column('user_id', String(255), ForeignKey("user.id")),
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Column('source_id', String(255), ForeignKey("source.id"))
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)
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class Source(Base):
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__tablename__ = 'source'
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id = Column(String(255), primary_key=True)
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class Meter(Base):
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"""Metering data"""
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__tablename__ = 'meter'
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id = Column(Integer, primary_key=True)
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counter_name = Column(String(255))
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sources = relationship("Source", secondary=lambda: sourceassoc)
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user_id = Column(String(255), ForeignKey('user.id'))
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project_id = Column(String(255), ForeignKey('project.id'))
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resource_id = Column(String(255), ForeignKey('resource.id'))
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resource_metadata = Column(JSONEncodedDict)
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counter_type = Column(String(255))
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counter_volume = Column(Integer)
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timestamp = Column(DateTime, default=timeutils.utcnow)
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message_signature = Column(String)
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message_id = Column(String)
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class User(Base):
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__tablename__ = 'user'
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id = Column(String(255), primary_key=True)
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sources = relationship("Source", secondary=lambda: sourceassoc)
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resources = relationship("Resource", backref='user')
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meters = relationship("Meter", backref='user')
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class Project(Base):
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__tablename__ = 'project'
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id = Column(String(255), primary_key=True)
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sources = relationship("Source", secondary=lambda: sourceassoc)
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resources = relationship("Resource", backref='project')
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meters = relationship("Meter", backref='project')
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class Resource(Base):
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__tablename__ = 'resource'
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id = Column(String(255), primary_key=True)
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sources = relationship("Source", secondary=lambda: sourceassoc)
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timestamp = Column(DateTime)
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resource_metadata = Column(JSONEncodedDict)
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received_timestamp = Column(DateTime, default=timeutils.utcnow)
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user_id = Column(String(255), ForeignKey('user.id'))
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project_id = Column(String(255), ForeignKey('project.id'))
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meters = relationship("Meter", backref='resource')
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