/
cli.py
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/
cli.py
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# Copyright (c) 2016 Catalyst IT Ltd.
#
# 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.
import os
from alembic import command as alembic_cmd
from alembic import config as alembic_cfg
from alembic import util as alembic_u
from oslo_config import cfg
from oslo_db import options
from oslo_log import log
from octavia.controller.worker.v2 import taskflow_jobboard_driver
from octavia.i18n import _
CONF = cfg.CONF
options.set_defaults(CONF)
# Setting explicitly here needed for taskflow persistence successful
# initialization
options.set_defaults(CONF, max_pool_size=10, max_overflow=20,
pool_timeout=10)
log.set_defaults()
log.register_options(CONF)
log.setup(CONF, 'octavia-db-manage')
def do_alembic_command(config, cmd, *args, **kwargs):
try:
getattr(alembic_cmd, cmd)(config, *args, **kwargs)
except alembic_u.CommandError as e:
alembic_u.err(str(e))
def do_check_migration(config, _cmd):
do_alembic_command(config, 'branches')
def add_alembic_subparser(sub, cmd):
return sub.add_parser(cmd, help=getattr(alembic_cmd, cmd).__doc__)
def do_upgrade(config, cmd):
if not CONF.command.revision and not CONF.command.delta:
raise SystemExit(_('You must provide a revision or relative delta'))
revision = CONF.command.revision or ''
if '-' in revision:
raise SystemExit(_('Negative relative revision (downgrade) not '
'supported'))
delta = CONF.command.delta
if delta:
if '+' in revision:
raise SystemExit(_('Use either --delta or relative revision, '
'not both'))
if delta < 0:
raise SystemExit(_('Negative delta (downgrade) not supported'))
revision = '%s+%d' % (revision, delta)
do_alembic_command(config, cmd, revision, sql=CONF.command.sql)
def no_downgrade(config, cmd):
raise SystemExit(_("Downgrade no longer supported"))
def do_stamp(config, cmd):
do_alembic_command(config, cmd,
CONF.command.revision,
sql=CONF.command.sql)
def do_revision(config, cmd):
do_alembic_command(config, cmd,
message=CONF.command.message,
autogenerate=CONF.command.autogenerate,
sql=CONF.command.sql)
def do_persistence_upgrade(config, cmd):
opt = cfg.StrOpt('persistence_connection',
default='sqlite://')
cfg.CONF.register_opts([opt], group='task_flow')
persistence = taskflow_jobboard_driver.MysqlPersistenceDriver()
persistence.initialize()
def add_command_parsers(subparsers):
for name in ['current', 'history', 'branches']:
parser = add_alembic_subparser(subparsers, name)
parser.set_defaults(func=do_alembic_command)
help_text = (getattr(alembic_cmd, 'branches').__doc__ +
' and validate head file')
parser = subparsers.add_parser('check_migration', help=help_text)
parser.set_defaults(func=do_check_migration)
parser = add_alembic_subparser(subparsers, 'upgrade')
parser.add_argument('--delta', type=int)
parser.add_argument('--sql', action='store_true')
parser.add_argument('revision', nargs='?')
parser.set_defaults(func=do_upgrade)
parser = subparsers.add_parser(
"upgrade_persistence",
help="Run migrations for persistence backend")
parser.set_defaults(func=do_persistence_upgrade)
parser = subparsers.add_parser('downgrade', help="(No longer supported)")
parser.add_argument('None', nargs='?', help="Downgrade not supported")
parser.set_defaults(func=no_downgrade)
parser = add_alembic_subparser(subparsers, 'stamp')
parser.add_argument('--sql', action='store_true')
parser.add_argument('revision')
parser.set_defaults(func=do_stamp)
parser = add_alembic_subparser(subparsers, 'revision')
parser.add_argument('-m', '--message')
parser.add_argument('--autogenerate', action='store_true')
parser.add_argument('--sql', action='store_true')
parser.set_defaults(func=do_revision)
command_opt = cfg.SubCommandOpt('command',
title='Command',
help='Available commands',
handler=add_command_parsers)
CONF.register_cli_opt(command_opt)
def main():
config = alembic_cfg.Config(
os.path.join(os.path.dirname(__file__), 'alembic.ini')
)
config.set_main_option('script_location',
'octavia.db.migration:alembic_migrations')
# attach the octavia conf to the Alembic conf
config.octavia_config = CONF
CONF(project='octavia')
CONF.command.func(config, CONF.command.name)