249 lines
6.9 KiB
Python
249 lines
6.9 KiB
Python
# Copyright 2012 Managed I.T.
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#
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# Author: Kiall Mac Innes <kiall@managedit.ie>
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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 sqlalchemy.orm import exc
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from moniker.openstack.common import cfg
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from moniker.openstack.common import log as logging
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from moniker import exceptions
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from moniker.storage import base
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from moniker.storage.impl_sqlalchemy import models
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from moniker.storage.impl_sqlalchemy.session import get_session
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LOG = logging.getLogger(__name__)
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SQL_OPTS = [
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cfg.IntOpt('connection_debug', default=0,
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help='Verbosity of SQL debugging information. 0=None,'
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' 100=Everything'),
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cfg.BoolOpt('connection_trace', default=False,
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help='Add python stack traces to SQL as comment strings'),
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cfg.BoolOpt('sqlite_synchronous', default=True,
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help='If passed, use synchronous mode for sqlite'),
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cfg.IntOpt('idle_timeout', default=3600,
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help='timeout before idle sql connections are reaped'),
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cfg.IntOpt('max_retries', default=10,
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help='maximum db connection retries during startup. '
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'(setting -1 implies an infinite retry count)'),
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cfg.IntOpt('retry_interval', default=10,
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help='interval between retries of opening a sql connection')
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]
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class SQLAlchemyStorage(base.StorageEngine):
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__plugin_name__ = 'sqlalchemy'
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@classmethod
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def get_opts(cls):
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opts = super(SQLAlchemyStorage, cls).get_opts()
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opts.extend(SQL_OPTS)
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return opts
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def get_connection(self, conf):
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return Connection(conf)
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class Connection(base.Connection):
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"""
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SQLAlchemy connection
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"""
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def __init__(self, conf):
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LOG.info('connecting to %s', conf.database_connection)
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self.session = self._get_connection(conf)
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def _get_connection(self, conf):
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"""
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Return a connection to the database.
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"""
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return get_session()
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def setup_schema(self):
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""" Semi-Private Method to create the database schema """
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models.Base.metadata.create_all(self.session.bind)
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def teardown_schema(self):
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""" Semi-Private Method to reset the database schema """
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models.Base.metadata.drop_all(self.session.bind)
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# Server Methods
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def create_server(self, context, values):
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server = models.Server()
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server.update(values)
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try:
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server.save(self.session)
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except exceptions.Duplicate:
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raise exceptions.DuplicateServer()
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return dict(server)
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def get_servers(self, context, criterion=None):
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query = self.session.query(models.Server)
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if criterion:
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query = query.filter_by(**criterion)
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try:
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result = query.all()
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except exc.NoResultFound:
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LOG.debug('No results found')
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return []
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else:
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return [dict(o) for o in result]
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def _get_server(self, context, server_id):
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query = self.session.query(models.Server)
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server = query.get(server_id)
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if not server:
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raise exceptions.ServerNotFound(server_id)
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else:
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return server
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def get_server(self, context, server_id):
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server = self._get_server(context, server_id)
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return dict(server)
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def update_server(self, context, server_id, values):
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server = self._get_server(context, server_id)
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server.update(values)
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try:
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server.save(self.session)
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except exceptions.Duplicate:
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raise exceptions.DuplicateServer()
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return dict(server)
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def delete_server(self, context, server_id):
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server = self._get_server(context, server_id)
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server.delete(self.session)
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# Domain Methods
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def create_domain(self, context, values):
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domain = models.Domain()
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domain.update(values)
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try:
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domain.save(self.session)
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except exceptions.Duplicate:
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raise exceptions.DuplicateDomain()
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return dict(domain)
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def get_domains(self, context, criterion=None):
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query = self.session.query(models.Domain)
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if criterion:
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query = query.filter_by(**criterion)
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try:
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result = query.all()
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except exc.NoResultFound:
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LOG.debug('No results found')
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return []
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else:
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return [dict(o) for o in result]
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def _get_domain(self, context, domain_id):
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query = self.session.query(models.Domain)
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domain = query.get(domain_id)
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if not domain:
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raise exceptions.DomainNotFound(domain_id)
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else:
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return domain
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def get_domain(self, context, domain_id):
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domain = self._get_domain(context, domain_id)
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return dict(domain)
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def update_domain(self, context, domain_id, values):
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domain = self._get_domain(context, domain_id)
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domain.update(values)
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try:
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domain.save(self.session)
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except exceptions.Duplicate:
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raise exceptions.DuplicateDomain()
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return dict(domain)
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def delete_domain(self, context, domain_id):
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domain = self._get_domain(context, domain_id)
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domain.delete(self.session)
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# Record Methods
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def create_record(self, context, domain_id, values):
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domain = self._get_domain(context, domain_id)
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record = models.Record()
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record.update(values)
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domain.records.append(record)
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domain.save(self.session)
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return dict(record)
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def get_records(self, context, domain_id, criterion=None):
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domain = self._get_domain(context, domain_id)
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query = domain.records
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if criterion:
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query = query.filter_by(**criterion)
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return [dict(o) for o in query.all()]
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def _get_record(self, context, record_id):
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query = self.session.query(models.Record)
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record = query.get(record_id)
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if not record:
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raise exceptions.RecordNotFound(record_id)
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else:
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return record
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def get_record(self, context, record_id):
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record = self._get_record(context, record_id)
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return dict(record)
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def update_record(self, context, record_id, values):
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record = self._get_record(context, record_id)
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record.update(values)
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record.save(self.session)
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return dict(record)
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def delete_record(self, context, record_id):
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record = self._get_record(context, record_id)
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record.delete(self.session)
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