cloudpulse/cloudpulse/db/sqlalchemy/models.py

146 lines
4.2 KiB
Python

# Copyright 2013 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
SQLAlchemy models for cloudpulse service
"""
import json
from oslo_config import cfg
from oslo_db import options as db_options
from oslo_db.sqlalchemy import models
from oslo_utils import reflection
import six.moves.urllib.parse as urlparse
from sqlalchemy import Column
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Integer
from sqlalchemy import schema
from sqlalchemy import String
from sqlalchemy import Text
from sqlalchemy.types import TypeDecorator, TEXT
from cloudpulse.common import paths
sql_opts = [
cfg.StrOpt('mysql_engine',
default='InnoDB',
help='MySQL engine to use.'),
cfg.IntOpt('max_db_entries',
default=240,
help=('Maximum test result entries to be persisted ')),
]
_DEFAULT_SQL_CONNECTION = ('sqlite:///' +
paths.state_path_def('cloudpulse.sqlite'))
cfg.CONF.register_opts(sql_opts, 'database')
db_options.set_defaults(cfg.CONF, connection=_DEFAULT_SQL_CONNECTION)
def table_args():
engine_name = urlparse.urlparse(cfg.CONF.database.connection).scheme
if engine_name == 'mysql':
return {'mysql_engine': cfg.CONF.database.mysql_engine,
'mysql_charset': "utf8"}
return None
class JsonEncodedType(TypeDecorator):
"""Abstract base type serialized as json-encoded string in db."""
type = None
impl = TEXT
def process_bind_param(self, value, dialect):
cls_name = reflection.get_class_name(self, fully_qualified=False)
if value is None:
# Save default value according to current type to keep the
# interface the consistent.
value = self.type()
elif not isinstance(value, self.type):
raise TypeError("%s supposes to store %s objects, but %s given"
% (cls_name,
self.type.__name__,
type(value).__name__))
serialized_value = json.dumps(value)
return serialized_value
def process_result_value(self, value, dialect):
if value is not None:
value = json.loads(value)
return value
class JSONEncodedDict(JsonEncodedType):
"""Represents dict serialized as json-encoded string in db."""
type = dict
class JSONEncodedList(JsonEncodedType):
"""Represents list serialized as json-encoded string in db."""
type = list
class CpulseBase(models.TimestampMixin,
models.ModelBase):
metadata = None
def as_dict(self):
d = {}
for c in self.__table__.columns:
d[c.name] = self[c.name]
return d
def save(self, session=None):
import cloudpulse.db.sqlalchemy.api as db_api
if session is None:
session = db_api.get_session()
super(CpulseBase, self).save(session)
Base = declarative_base(cls=CpulseBase)
class cpulse(Base):
"""Represents cloudpulse test"""
__tablename__ = 'cpulse'
__table_args__ = (
schema.UniqueConstraint('uuid', name='uniq_test0uuid'),
table_args()
)
id = Column(Integer, primary_key=True)
uuid = Column(String(64))
name = Column(String(255))
state = Column(String(255))
result = Column(Text)
testtype = Column(String(255))
class CpulseLock(Base):
"""Represents a cpulselock."""
__tablename__ = 'cpulselock'
__table_args__ = (
schema.UniqueConstraint('test_name', name='uniq_testlock0test_name'),
table_args()
)
id = Column(Integer, primary_key=True)
test_name = Column(String(64))
conductor_id = Column(String(64))