151 lines
4.9 KiB
Python
151 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Objectif Libre
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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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# @author: Stéphane Albert
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#
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from oslo_config import cfg
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from stevedore import extension
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from cloudkitty import config # noqa
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from cloudkitty.db import api as db_api
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from cloudkitty import service
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CONF = cfg.CONF
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PROCESSORS_NAMESPACE = 'cloudkitty.rating.processors'
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class ModuleNotFound(Exception):
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def __init__(self, name):
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self.name = name
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super(ModuleNotFound, self).__init__(
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'Module %s not found' % name)
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class MultipleModulesRevisions(Exception):
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def __init__(self, revision):
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self.revision = revision
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super(MultipleModulesRevisions, self).__init__(
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'Can\'t apply revision %s to multiple modules'
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% revision)
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class DBCommand(object):
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def __init__(self):
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self.rating_models = {}
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self._load_rating_models()
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def _load_rating_models(self):
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extensions = extension.ExtensionManager(
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PROCESSORS_NAMESPACE)
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self.rating_models = {}
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for ext in extensions:
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if hasattr(ext.plugin, 'db_api'):
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self.rating_models[ext.name] = ext.plugin.db_api
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def get_module_migration(self, name):
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if name == 'cloudkitty':
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mod_migration = db_api.get_instance().get_migration()
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else:
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try:
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module = self.rating_models[name]
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mod_migration = module.get_migration()
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except KeyError:
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raise ModuleNotFound(name)
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return mod_migration
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def get_migrations(self, name=None):
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if not name:
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migrations = []
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migrations.append(self.get_module_migration('cloudkitty'))
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for model in self.rating_models.values():
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migrations.append(model.get_migration())
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else:
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return [self.get_module_migration(name)]
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return migrations
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def check_revsion(self, revision):
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revision = revision or 'head'
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if revision not in ('base', 'head'):
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raise MultipleModulesRevisions(revision)
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def upgrade(self):
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if CONF.command.module:
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self.check_revsion(CONF.command.revision)
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migrations = self.get_migrations()
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for migration in migrations:
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migration.upgrade(CONF.command.revision)
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def downgrade(self):
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if CONF.command.module:
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self.check_revsion(CONF.command.revision)
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migrations = self.get_migrations()
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for migration in migrations:
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migration.downgrade(CONF.command.revision)
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def revision(self):
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migration = self.get_module_migration(CONF.command.module)
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migration.revision(CONF.command.message, CONF.command.autogenerate)
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def stamp(self):
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migration = self.get_module_migration(CONF.command.module)
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migration.stamp(CONF.command.revision)
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def version(self):
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migration = self.get_module_migration(CONF.command.module)
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migration.version()
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def add_command_parsers(subparsers):
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command_object = DBCommand()
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parser = subparsers.add_parser('upgrade')
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parser.set_defaults(func=command_object.upgrade)
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parser.add_argument('--revision', nargs='?')
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parser.add_argument('--module', nargs='?')
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parser = subparsers.add_parser('downgrade')
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parser.set_defaults(func=command_object.downgrade)
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parser.add_argument('--revision', nargs='?')
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parser.add_argument('--module', nargs='?')
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parser = subparsers.add_parser('stamp')
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parser.set_defaults(func=command_object.stamp)
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parser.add_argument('--revision', nargs='?')
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parser.add_argument('--module', required=True)
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parser = subparsers.add_parser('revision')
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parser.set_defaults(func=command_object.revision)
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parser.add_argument('-m', '--message')
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parser.add_argument('--autogenerate', action='store_true')
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parser.add_argument('--module', required=True)
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parser = subparsers.add_parser('version')
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parser.set_defaults(func=command_object.version)
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parser.add_argument('--module', required=True)
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command_opt = cfg.SubCommandOpt('command',
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title='Command',
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help='Available commands',
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handler=add_command_parsers)
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CONF.register_cli_opt(command_opt)
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def main():
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service.prepare_service()
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CONF.command.func()
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