Switch to oslo.db and fix cmd.manage
This change doesn't remove all of the d.sqla.* modules for compat so we don't need to change more things then needed. Things like multiple engines etc are supported via a _FACADE dict in d.sqla.session and other things we need as well. We remove d.o.common.db code since it is not needed anymore and technically replaced by oslo.db. Notably the *biggest* change is changing database_connection to connection. Also fixes problems with arguments in cmd.manage Change-Id: I948a42b7f3dbc1d484200e86b3f8d0b85769ad08
This commit is contained in:
Endre Karlson
parent
cb6c46397b
commit
9d5d70e7f1
@ -82,7 +82,7 @@ function configure_designate() {
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iniset $DESIGNATE_CONF DEFAULT verbose True
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iniset $DESIGNATE_CONF DEFAULT state_path $DESIGNATE_STATE_PATH
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iniset $DESIGNATE_CONF DEFAULT root-helper sudo designate-rootwrap $DESIGNATE_ROOTWRAP_CONF
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iniset $DESIGNATE_CONF storage:sqlalchemy database_connection `database_connection_url designate`
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iniset $DESIGNATE_CONF storage:sqlalchemy connection `database_connection_url designate`
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sudo cp $DESIGNATE_DIR/etc/designate/rootwrap.conf.sample $DESIGNATE_ROOTWRAP_CONF
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iniset $DESIGNATE_ROOTWRAP_CONF DEFAULT filters_path $DESIGNATE_DIR/etc/designate/rootwrap.d root-helper
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@ -187,7 +187,6 @@ function init_designate() {
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recreate_database designate utf8
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# Init and migrate designate database
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designate-manage database init
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designate-manage database sync
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init_designate_backend
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@ -46,7 +46,7 @@ function install_designate_backend {
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# configure_designate_backend - make configuration changes, including those to other services
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function configure_designate_backend {
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iniset $DESIGNATE_CONF backend:powerdns database_connection `database_connection_url designate_pdns`
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iniset $DESIGNATE_CONF backend:powerdns connection `database_connection_url designate_pdns`
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sudo tee $POWERDNS_CFG_DIR/pdns.conf > /dev/null <<EOF
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# General Config
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@ -88,7 +88,6 @@ function init_designate_backend {
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recreate_database designate_pdns utf8
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# Init and migrate designate_pdns database
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designate-manage powerdns init
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designate-manage powerdns sync
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}
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@ -17,11 +17,12 @@
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# under the License.
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import base64
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from oslo.config import cfg
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from oslo.db import options
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from sqlalchemy import func
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from sqlalchemy.sql import select
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from sqlalchemy.sql.expression import and_
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from sqlalchemy.orm import exc as sqlalchemy_exceptions
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from oslo.config import cfg
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from designate.openstack.common import excutils
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from designate.openstack.common import log as logging
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@ -29,7 +30,6 @@ from designate import exceptions
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from designate.backend import base
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from designate.backend.impl_powerdns import models
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from designate.sqlalchemy.session import get_session
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from designate.sqlalchemy.session import SQLOPTS
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from designate.sqlalchemy.expressions import InsertFromSelect
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@ -44,11 +44,11 @@ cfg.CONF.register_opts([
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cfg.StrOpt('domain-type', default='NATIVE', help='PowerDNS Domain Type'),
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cfg.ListOpt('also-notify', default=[], help='List of additional IPs to '
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'send NOTIFYs to'),
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] + SQLOPTS, group='backend:powerdns')
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] + options.database_opts, group='backend:powerdns')
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# Overide the default DB connection registered above, to avoid name conflicts
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# between the Designate and PowerDNS databases.
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cfg.CONF.set_default('database_connection',
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cfg.CONF.set_default('connection',
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'sqlite:///$state_path/powerdns.sqlite',
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group='backend:powerdns')
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@ -18,11 +18,11 @@
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from sqlalchemy import Column, String, Text, Integer, Boolean
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from sqlalchemy.ext.declarative import declarative_base
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from designate.sqlalchemy.models import Base as CommonBase
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from designate.sqlalchemy import models
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from designate.sqlalchemy.types import UUID
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class Base(CommonBase):
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class Base(models.Base):
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id = Column(Integer, primary_key=True, autoincrement=True)
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@ -13,19 +13,30 @@
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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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# Copied: designate
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import os
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import sys
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import eventlet
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from oslo.config import cfg
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from stevedore.extension import ExtensionManager
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from designate.openstack.common import log as logging
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from designate.openstack.common import strutils
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from designate import utils
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from designate.openstack.common import gettextutils
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from designate.openstack.common.gettextutils import _
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from designate.openstack.common import log as logging
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gettextutils.install('designate')
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eventlet.monkey_patch(os=False)
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CONF = cfg.CONF
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def methods_of(obj):
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"""Get all callable methods of an object that don't start with underscore
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returns a list of tuples of the form (method_name, method)
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"""
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result = []
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@ -40,56 +51,78 @@ def get_available_commands():
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return dict([(e.name, e.plugin) for e in em.extensions])
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def add_command_parser(subparsers):
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# for name, category in get_available_commands()
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# parser = subparsers.add_parser('db')
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for name, cls in get_available_commands().items():
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obj = cls()
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def add_command_parsers(subparsers):
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for category, cls in get_available_commands().items():
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command_object = cls()
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# A Category like 'database' etc
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parser = subparsers.add_parser(name)
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parser.set_defaults(command_object=obj)
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parser = subparsers.add_parser(category)
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parser.set_defaults(command_object=command_object)
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category_subparsers = parser.add_subparsers(dest=name)
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category_subparsers = parser.add_subparsers(dest='action')
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for (action, action_fn) in methods_of(obj):
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action_name = getattr(action_fn, '_cmd_name', action)
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cmd_parser = category_subparsers.add_parser(action_name)
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for (action, action_fn) in methods_of(command_object):
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action = getattr(action_fn, '_cmd_name', action)
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parser = category_subparsers.add_parser(action)
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action_kwargs = []
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for args, kwargs in getattr(action_fn, 'args', []):
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kwargs.setdefault('dest', args[0][2:])
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if kwargs['dest'].startswith('action_kwarg_'):
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action_kwargs.append(
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kwargs['dest'][len('action_kwarg_'):])
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else:
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action_kwargs.append(kwargs['dest'])
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kwargs['dest'] = 'action_kwarg_' + kwargs['dest']
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cmd_parser.add_argument(*args, **kwargs)
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parser.add_argument(*args, **kwargs)
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cmd_parser.set_defaults(action_fn=action_fn)
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cmd_parser.set_defaults(action_kwargs=action_kwargs)
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cmd_parser.add_argument('action_args', nargs='*')
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parser.set_defaults(action_fn=action_fn)
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parser.set_defaults(action_kwargs=action_kwargs)
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command_opt = cfg.SubCommandOpt('command', title="Commands",
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help="Available Commands",
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handler=add_command_parser)
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category_opt = cfg.SubCommandOpt('category', title="Commands",
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help="Available Commands",
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handler=add_command_parsers)
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def get_arg_string(args):
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arg = None
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if args[0] == '-':
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# (Note)zhiteng: args starts with FLAGS.oparser.prefix_chars
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# is optional args. Notice that cfg module takes care of
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# actual ArgParser so prefix_chars is always '-'.
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if args[1] == '-':
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# This is long optional arg
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arg = args[2:]
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else:
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arg = args[3:]
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else:
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arg = args
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return arg
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def fetch_func_args(func):
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fn_args = []
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for args, kwargs in getattr(func, 'args', []):
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arg = kwargs.get('dest', get_arg_string(args[0]))
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fn_args.append(getattr(CONF.category, arg))
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return fn_args
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def main():
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cfg.CONF.register_cli_opt(command_opt)
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CONF.register_cli_opt(category_opt)
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utils.read_config('designate', sys.argv)
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logging.setup('designate')
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try:
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utils.read_config('designate', sys.argv)
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logging.setup("designate")
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except cfg.ConfigFilesNotFoundError:
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cfgfile = CONF.config_file[-1] if CONF.config_file else None
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if cfgfile and not os.access(cfgfile, os.R_OK):
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st = os.stat(cfgfile)
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print(_("Could not read %s. Re-running with sudo") % cfgfile)
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try:
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os.execvp('sudo', ['sudo', '-u', '#%s' % st.st_uid] + sys.argv)
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except Exception:
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print(_('sudo failed, continuing as if nothing happened'))
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func_kwargs = {}
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for k in cfg.CONF.command.action_kwargs:
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v = getattr(cfg.CONF.command, 'action_kwarg_' + k)
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if v is None:
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continue
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func_kwargs[k] = strutils.safe_decode(v)
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func_args = [strutils.safe_decode(arg)
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for arg in cfg.CONF.command.action_args]
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return cfg.CONF.command.action_fn(*func_args, **func_kwargs)
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print(_('Please re-run designate-manage as root.'))
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sys.exit(2)
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fn = CONF.category.action_fn
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fn_args = fetch_func_args(fn)
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fn(*fn_args)
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@ -15,69 +15,45 @@
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# under the License.
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import os
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from migrate.exceptions import (DatabaseAlreadyControlledError,
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DatabaseNotControlledError)
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from migrate.versioning import api as versioning_api
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from oslo.config import cfg
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from oslo.db.sqlalchemy.migration_cli import manager as migration_manager
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from designate.openstack.common import log as logging
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from designate.openstack.common.gettextutils import _LI
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from designate.manage import base
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LOG = logging.getLogger(__name__)
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REPOSITORY = os.path.abspath(os.path.join(os.path.dirname(__file__), '..',
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'storage', 'impl_sqlalchemy',
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'migrate_repo'))
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cfg.CONF.import_opt('database_connection', 'designate.storage.impl_sqlalchemy',
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cfg.CONF.import_opt('connection', 'designate.storage.impl_sqlalchemy',
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group='storage:sqlalchemy')
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CONF = cfg.CONF
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def get_manager():
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migration_config = {
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'migration_repo_path': REPOSITORY,
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'db_url': CONF['storage:sqlalchemy'].connection}
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return migration_manager.MigrationManager(migration_config)
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class DatabaseCommands(base.Commands):
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def init(self):
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url = cfg.CONF['storage:sqlalchemy'].database_connection
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try:
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LOG.info(_LI('Attempting to initialize database'))
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versioning_api.version_control(url=url, repository=REPOSITORY)
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LOG.info(_LI('Database initialized successfully'))
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except DatabaseAlreadyControlledError:
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raise Exception('Database already initialized')
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@base.args('--version', metavar='<version>', help="Database version")
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def sync(self, version=None):
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url = cfg.CONF['storage:sqlalchemy'].database_connection
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if not os.path.exists(REPOSITORY):
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raise Exception('Migration Repository Not Found')
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try:
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target_version = int(version) if version else None
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current_version = versioning_api.db_version(url=url,
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repository=REPOSITORY)
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except DatabaseNotControlledError:
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raise Exception('Database not yet initialized')
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LOG.info(_LI("Attempting to synchronize database from version "
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"'%(curr_version)s' to '%(tgt_version)s'"),
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{'curr_version': current_version,
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'tgt_version': target_version if
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target_version is not None else "latest"})
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if target_version and target_version < current_version:
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versioning_api.downgrade(url=url, repository=REPOSITORY,
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version=version)
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else:
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versioning_api.upgrade(url=url, repository=REPOSITORY,
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version=version)
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LOG.info(_LI('Database synchronized successfully'))
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def version(self):
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url = cfg.CONF['storage:sqlalchemy'].database_connection
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current = versioning_api.db_version(url=url, repository=REPOSITORY)
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current = get_manager().version()
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latest = versioning_api.version(repository=REPOSITORY).value
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print("Current: %s Latest: %s" % (current, latest))
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def sync(self):
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get_manager().upgrade(None)
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@base.args('revision', nargs='?')
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def upgrade(self, revision):
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get_manager().upgrade(revision)
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@base.args('revision', nargs='?')
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def downgrade(self, revision):
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get_manager().downgrade(revision)
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@ -15,69 +15,45 @@
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# under the License.
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import os
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from migrate.exceptions import (DatabaseAlreadyControlledError,
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DatabaseNotControlledError)
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from migrate.versioning import api as versioning_api
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from oslo.config import cfg
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from oslo.db.sqlalchemy.migration_cli import manager as migration_manager
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from designate.openstack.common import log as logging
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from designate.openstack.common.gettextutils import _LI
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from designate.manage import base
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LOG = logging.getLogger(__name__)
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REPOSITORY = os.path.abspath(os.path.join(os.path.dirname(__file__), '..',
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'backend', 'impl_powerdns',
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'migrate_repo'))
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cfg.CONF.import_opt('database_connection', 'designate.backend.impl_powerdns',
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cfg.CONF.import_opt('connection', 'designate.backend.impl_powerdns',
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group='backend:powerdns')
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CONF = cfg.CONF
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def get_manager():
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migration_config = {
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'migration_repo_path': REPOSITORY,
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'db_url': CONF['backend:powerdns'].connection}
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return migration_manager.MigrationManager(migration_config)
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class DatabaseCommands(base.Commands):
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def init(self):
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url = cfg.CONF['backend:powerdns'].database_connection
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if not os.path.exists(REPOSITORY):
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raise Exception('Migration Repository Not Found')
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try:
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LOG.info(_LI('Attempting to initialize PowerDNS database'))
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versioning_api.version_control(url=url, repository=REPOSITORY)
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LOG.info(_LI('PowerDNS database initialized successfully'))
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except DatabaseAlreadyControlledError:
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raise Exception('PowerDNS Database already initialized')
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@base.args('--version', metavar='<version>', help="Database version")
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def sync(self, version=None):
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url = cfg.CONF['backend:powerdns'].database_connection
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if not os.path.exists(REPOSITORY):
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raise Exception('Migration Repository Not Found')
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try:
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target_version = int(version) if version is not None else None
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current_version = versioning_api.db_version(url=url,
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repository=REPOSITORY)
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except DatabaseNotControlledError:
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raise Exception('PowerDNS database not yet initialized')
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LOG.info(_LI("Attempting to synchronize PowerDNS database "
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"from version '%(curr_version)s' to '%(tgt_version)s'"),
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{'curr_version': current_version,
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'tgt_version': target_version if
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target_version is not None else "latest"})
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if target_version and target_version < current_version:
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versioning_api.downgrade(url=url, repository=REPOSITORY,
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version=version)
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else:
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versioning_api.upgrade(url=url, repository=REPOSITORY,
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version=version)
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LOG.info(_LI('PowerDNS database synchronized successfully'))
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def version(self):
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url = cfg.CONF['backend:powerdns'].database_connection
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current = get_manager().version()
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latest = versioning_api.version(repository=REPOSITORY).value
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print("Current: %s Latest: %s" % (current, latest))
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print(versioning_api.db_version(url=url, repository=REPOSITORY))
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def sync(self):
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get_manager().upgrade(None)
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@base.args('revision', nargs='?')
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def upgrade(self, revision):
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get_manager().upgrade(revision)
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@base.args('revision', nargs='?')
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def downgrade(self, revision):
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get_manager().downgrade(revision)
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@ -1,162 +0,0 @@
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# Copyright (c) 2013 Rackspace Hosting
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# All Rights Reserved.
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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
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
"""Multiple DB API backend support.
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|
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A DB backend module should implement a method named 'get_backend' which
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takes no arguments. The method can return any object that implements DB
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API methods.
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"""
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import functools
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import logging
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import threading
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import time
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from designate.openstack.common.db import exception
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from designate.openstack.common.gettextutils import _LE
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from designate.openstack.common import importutils
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LOG = logging.getLogger(__name__)
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def safe_for_db_retry(f):
|
||||
"""Enable db-retry for decorated function, if config option enabled."""
|
||||
f.__dict__['enable_retry'] = True
|
||||
return f
|
||||
|
||||
|
||||
class wrap_db_retry(object):
|
||||
"""Retry db.api methods, if DBConnectionError() raised
|
||||
|
||||
Retry decorated db.api methods. If we enabled `use_db_reconnect`
|
||||
in config, this decorator will be applied to all db.api functions,
|
||||
marked with @safe_for_db_retry decorator.
|
||||
Decorator catchs DBConnectionError() and retries function in a
|
||||
loop until it succeeds, or until maximum retries count will be reached.
|
||||
"""
|
||||
|
||||
def __init__(self, retry_interval, max_retries, inc_retry_interval,
|
||||
max_retry_interval):
|
||||
super(wrap_db_retry, self).__init__()
|
||||
|
||||
self.retry_interval = retry_interval
|
||||
self.max_retries = max_retries
|
||||
self.inc_retry_interval = inc_retry_interval
|
||||
self.max_retry_interval = max_retry_interval
|
||||
|
||||
def __call__(self, f):
|
||||
@functools.wraps(f)
|
||||
def wrapper(*args, **kwargs):
|
||||
next_interval = self.retry_interval
|
||||
remaining = self.max_retries
|
||||
|
||||
while True:
|
||||
try:
|
||||
return f(*args, **kwargs)
|
||||
except exception.DBConnectionError as e:
|
||||
if remaining == 0:
|
||||
LOG.exception(_LE('DB exceeded retry limit.'))
|
||||
raise exception.DBError(e)
|
||||
if remaining != -1:
|
||||
remaining -= 1
|
||||
LOG.exception(_LE('DB connection error.'))
|
||||
# NOTE(vsergeyev): We are using patched time module, so
|
||||
# this effectively yields the execution
|
||||
# context to another green thread.
|
||||
time.sleep(next_interval)
|
||||
if self.inc_retry_interval:
|
||||
next_interval = min(
|
||||
next_interval * 2,
|
||||
self.max_retry_interval
|
||||
)
|
||||
return wrapper
|
||||
|
||||
|
||||
class DBAPI(object):
|
||||
def __init__(self, backend_name, backend_mapping=None, lazy=False,
|
||||
**kwargs):
|
||||
"""Initialize the chosen DB API backend.
|
||||
|
||||
:param backend_name: name of the backend to load
|
||||
:type backend_name: str
|
||||
|
||||
:param backend_mapping: backend name -> module/class to load mapping
|
||||
:type backend_mapping: dict
|
||||
|
||||
:param lazy: load the DB backend lazily on the first DB API method call
|
||||
:type lazy: bool
|
||||
|
||||
Keyword arguments:
|
||||
|
||||
:keyword use_db_reconnect: retry DB transactions on disconnect or not
|
||||
:type use_db_reconnect: bool
|
||||
|
||||
:keyword retry_interval: seconds between transaction retries
|
||||
:type retry_interval: int
|
||||
|
||||
:keyword inc_retry_interval: increase retry interval or not
|
||||
:type inc_retry_interval: bool
|
||||
|
||||
:keyword max_retry_interval: max interval value between retries
|
||||
:type max_retry_interval: int
|
||||
|
||||
:keyword max_retries: max number of retries before an error is raised
|
||||
:type max_retries: int
|
||||
|
||||
"""
|
||||
|
||||
self._backend = None
|
||||
self._backend_name = backend_name
|
||||
self._backend_mapping = backend_mapping or {}
|
||||
self._lock = threading.Lock()
|
||||
|
||||
if not lazy:
|
||||
self._load_backend()
|
||||
|
||||
self.use_db_reconnect = kwargs.get('use_db_reconnect', False)
|
||||
self.retry_interval = kwargs.get('retry_interval', 1)
|
||||
self.inc_retry_interval = kwargs.get('inc_retry_interval', True)
|
||||
self.max_retry_interval = kwargs.get('max_retry_interval', 10)
|
||||
self.max_retries = kwargs.get('max_retries', 20)
|
||||
|
||||
def _load_backend(self):
|
||||
with self._lock:
|
||||
if not self._backend:
|
||||
# Import the untranslated name if we don't have a mapping
|
||||
backend_path = self._backend_mapping.get(self._backend_name,
|
||||
self._backend_name)
|
||||
backend_mod = importutils.import_module(backend_path)
|
||||
self._backend = backend_mod.get_backend()
|
||||
|
||||
def __getattr__(self, key):
|
||||
if not self._backend:
|
||||
self._load_backend()
|
||||
|
||||
attr = getattr(self._backend, key)
|
||||
if not hasattr(attr, '__call__'):
|
||||
return attr
|
||||
# NOTE(vsergeyev): If `use_db_reconnect` option is set to True, retry
|
||||
# DB API methods, decorated with @safe_for_db_retry
|
||||
# on disconnect.
|
||||
if self.use_db_reconnect and hasattr(attr, 'enable_retry'):
|
||||
attr = wrap_db_retry(
|
||||
retry_interval=self.retry_interval,
|
||||
max_retries=self.max_retries,
|
||||
inc_retry_interval=self.inc_retry_interval,
|
||||
max_retry_interval=self.max_retry_interval)(attr)
|
||||
|
||||
return attr
|
||||
@ -1,56 +0,0 @@
|
||||
# Copyright 2010 United States Government as represented by the
|
||||
# Administrator of the National Aeronautics and Space Administration.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
|
||||
"""DB related custom exceptions."""
|
||||
|
||||
import six
|
||||
|
||||
from designate.openstack.common.gettextutils import _
|
||||
|
||||
|
||||
class DBError(Exception):
|
||||
"""Wraps an implementation specific exception."""
|
||||
def __init__(self, inner_exception=None):
|
||||
self.inner_exception = inner_exception
|
||||
super(DBError, self).__init__(six.text_type(inner_exception))
|
||||
|
||||
|
||||
class DBDuplicateEntry(DBError):
|
||||
"""Wraps an implementation specific exception."""
|
||||
def __init__(self, columns=[], inner_exception=None):
|
||||
self.columns = columns
|
||||
super(DBDuplicateEntry, self).__init__(inner_exception)
|
||||
|
||||
|
||||
class DBDeadlock(DBError):
|
||||
def __init__(self, inner_exception=None):
|
||||
super(DBDeadlock, self).__init__(inner_exception)
|
||||
|
||||
|
||||
class DBInvalidUnicodeParameter(Exception):
|
||||
message = _("Invalid Parameter: "
|
||||
"Unicode is not supported by the current database.")
|
||||
|
||||
|
||||
class DbMigrationError(DBError):
|
||||
"""Wraps migration specific exception."""
|
||||
def __init__(self, message=None):
|
||||
super(DbMigrationError, self).__init__(message)
|
||||
|
||||
|
||||
class DBConnectionError(DBError):
|
||||
"""Wraps connection specific exception."""
|
||||
pass
|
||||
@ -1,171 +0,0 @@
|
||||
# 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 copy
|
||||
|
||||
from oslo.config import cfg
|
||||
|
||||
|
||||
database_opts = [
|
||||
cfg.StrOpt('sqlite_db',
|
||||
deprecated_group='DEFAULT',
|
||||
default='designate.sqlite',
|
||||
help='The file name to use with SQLite'),
|
||||
cfg.BoolOpt('sqlite_synchronous',
|
||||
deprecated_group='DEFAULT',
|
||||
default=True,
|
||||
help='If True, SQLite uses synchronous mode'),
|
||||
cfg.StrOpt('backend',
|
||||
default='sqlalchemy',
|
||||
deprecated_name='db_backend',
|
||||
deprecated_group='DEFAULT',
|
||||
help='The backend to use for db'),
|
||||
cfg.StrOpt('connection',
|
||||
help='The SQLAlchemy connection string used to connect to the '
|
||||
'database',
|
||||
secret=True,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_connection',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sql_connection',
|
||||
group='DATABASE'),
|
||||
cfg.DeprecatedOpt('connection',
|
||||
group='sql'), ]),
|
||||
cfg.StrOpt('mysql_sql_mode',
|
||||
default='TRADITIONAL',
|
||||
help='The SQL mode to be used for MySQL sessions. '
|
||||
'This option, including the default, overrides any '
|
||||
'server-set SQL mode. To use whatever SQL mode '
|
||||
'is set by the server configuration, '
|
||||
'set this to no value. Example: mysql_sql_mode='),
|
||||
cfg.IntOpt('idle_timeout',
|
||||
default=3600,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_idle_timeout',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sql_idle_timeout',
|
||||
group='DATABASE'),
|
||||
cfg.DeprecatedOpt('idle_timeout',
|
||||
group='sql')],
|
||||
help='Timeout before idle sql connections are reaped'),
|
||||
cfg.IntOpt('min_pool_size',
|
||||
default=1,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_min_pool_size',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sql_min_pool_size',
|
||||
group='DATABASE')],
|
||||
help='Minimum number of SQL connections to keep open in a '
|
||||
'pool'),
|
||||
cfg.IntOpt('max_pool_size',
|
||||
default=None,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_max_pool_size',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sql_max_pool_size',
|
||||
group='DATABASE')],
|
||||
help='Maximum number of SQL connections to keep open in a '
|
||||
'pool'),
|
||||
cfg.IntOpt('max_retries',
|
||||
default=10,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_max_retries',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sql_max_retries',
|
||||
group='DATABASE')],
|
||||
help='Maximum db connection retries during startup. '
|
||||
'(setting -1 implies an infinite retry count)'),
|
||||
cfg.IntOpt('retry_interval',
|
||||
default=10,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_retry_interval',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('reconnect_interval',
|
||||
group='DATABASE')],
|
||||
help='Interval between retries of opening a sql connection'),
|
||||
cfg.IntOpt('max_overflow',
|
||||
default=None,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_max_overflow',
|
||||
group='DEFAULT'),
|
||||
cfg.DeprecatedOpt('sqlalchemy_max_overflow',
|
||||
group='DATABASE')],
|
||||
help='If set, use this value for max_overflow with sqlalchemy'),
|
||||
cfg.IntOpt('connection_debug',
|
||||
default=0,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_connection_debug',
|
||||
group='DEFAULT')],
|
||||
help='Verbosity of SQL debugging information. 0=None, '
|
||||
'100=Everything'),
|
||||
cfg.BoolOpt('connection_trace',
|
||||
default=False,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sql_connection_trace',
|
||||
group='DEFAULT')],
|
||||
help='Add python stack traces to SQL as comment strings'),
|
||||
cfg.IntOpt('pool_timeout',
|
||||
default=None,
|
||||
deprecated_opts=[cfg.DeprecatedOpt('sqlalchemy_pool_timeout',
|
||||
group='DATABASE')],
|
||||
help='If set, use this value for pool_timeout with sqlalchemy'),
|
||||
cfg.BoolOpt('use_db_reconnect',
|
||||
default=False,
|
||||
help='Enable the experimental use of database reconnect '
|
||||
'on connection lost'),
|
||||
cfg.IntOpt('db_retry_interval',
|
||||
default=1,
|
||||
help='seconds between db connection retries'),
|
||||
cfg.BoolOpt('db_inc_retry_interval',
|
||||
default=True,
|
||||
help='Whether to increase interval between db connection '
|
||||
'retries, up to db_max_retry_interval'),
|
||||
cfg.IntOpt('db_max_retry_interval',
|
||||
default=10,
|
||||
help='max seconds between db connection retries, if '
|
||||
'db_inc_retry_interval is enabled'),
|
||||
cfg.IntOpt('db_max_retries',
|
||||
default=20,
|
||||
help='maximum db connection retries before error is raised. '
|
||||
'(setting -1 implies an infinite retry count)'),
|
||||
]
|
||||
|
||||
CONF = cfg.CONF
|
||||
CONF.register_opts(database_opts, 'database')
|
||||
|
||||
|
||||
def set_defaults(sql_connection, sqlite_db, max_pool_size=None,
|
||||
max_overflow=None, pool_timeout=None):
|
||||
"""Set defaults for configuration variables."""
|
||||
cfg.set_defaults(database_opts,
|
||||
connection=sql_connection,
|
||||
sqlite_db=sqlite_db)
|
||||
# Update the QueuePool defaults
|
||||
if max_pool_size is not None:
|
||||
cfg.set_defaults(database_opts,
|
||||
max_pool_size=max_pool_size)
|
||||
if max_overflow is not None:
|
||||
cfg.set_defaults(database_opts,
|
||||
max_overflow=max_overflow)
|
||||
if pool_timeout is not None:
|
||||
cfg.set_defaults(database_opts,
|
||||
pool_timeout=pool_timeout)
|
||||
|
||||
|
||||
def list_opts():
|
||||
"""Returns a list of oslo.config options available in the library.
|
||||
|
||||
The returned list includes all oslo.config options which may be registered
|
||||
at runtime by the library.
|
||||
|
||||
Each element of the list is a tuple. The first element is the name of the
|
||||
group under which the list of elements in the second element will be
|
||||
registered. A group name of None corresponds to the [DEFAULT] group in
|
||||
config files.
|
||||
|
||||
The purpose of this is to allow tools like the Oslo sample config file
|
||||
generator to discover the options exposed to users by this library.
|
||||
|
||||
:returns: a list of (group_name, opts) tuples
|
||||
"""
|
||||
return [('database', copy.deepcopy(database_opts))]
|
||||
@ -1,278 +0,0 @@
|
||||
# coding: utf-8
|
||||
#
|
||||
# Copyright (c) 2013 OpenStack Foundation
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
#
|
||||
# Base on code in migrate/changeset/databases/sqlite.py which is under
|
||||
# the following license:
|
||||
#
|
||||
# The MIT License
|
||||
#
|
||||
# Copyright (c) 2009 Evan Rosson, Jan Dittberner, Domen Kožar
|
||||
#
|
||||
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
# of this software and associated documentation files (the "Software"), to deal
|
||||
# in the Software without restriction, including without limitation the rights
|
||||
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
# copies of the Software, and to permit persons to whom the Software is
|
||||
# furnished to do so, subject to the following conditions:
|
||||
# The above copyright notice and this permission notice shall be included in
|
||||
# all copies or substantial portions of the Software.
|
||||
#
|
||||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
# THE SOFTWARE.
|
||||
|
||||
import os
|
||||
import re
|
||||
|
||||
from migrate.changeset import ansisql
|
||||
from migrate.changeset.databases import sqlite
|
||||
from migrate import exceptions as versioning_exceptions
|
||||
from migrate.versioning import api as versioning_api
|
||||
from migrate.versioning.repository import Repository
|
||||
import sqlalchemy
|
||||
from sqlalchemy.schema import UniqueConstraint
|
||||
|
||||
from designate.openstack.common.db import exception
|
||||
from designate.openstack.common.gettextutils import _
|
||||
|
||||
|
||||
def _get_unique_constraints(self, table):
|
||||
"""Retrieve information about existing unique constraints of the table
|
||||
|
||||
This feature is needed for _recreate_table() to work properly.
|
||||
Unfortunately, it's not available in sqlalchemy 0.7.x/0.8.x.
|
||||
|
||||
"""
|
||||
|
||||
data = table.metadata.bind.execute(
|
||||
"""SELECT sql
|
||||
FROM sqlite_master
|
||||
WHERE
|
||||
type='table' AND
|
||||
name=:table_name""",
|
||||
table_name=table.name
|
||||
).fetchone()[0]
|
||||
|
||||
UNIQUE_PATTERN = "CONSTRAINT (\w+) UNIQUE \(([^\)]+)\)"
|
||||
return [
|
||||
UniqueConstraint(
|
||||
*[getattr(table.columns, c.strip(' "')) for c in cols.split(",")],
|
||||
name=name
|
||||
)
|
||||
for name, cols in re.findall(UNIQUE_PATTERN, data)
|
||||
]
|
||||
|
||||
|
||||
def _recreate_table(self, table, column=None, delta=None, omit_uniques=None):
|
||||
"""Recreate the table properly
|
||||
|
||||
Unlike the corresponding original method of sqlalchemy-migrate this one
|
||||
doesn't drop existing unique constraints when creating a new one.
|
||||
|
||||
"""
|
||||
|
||||
table_name = self.preparer.format_table(table)
|
||||
|
||||
# we remove all indexes so as not to have
|
||||
# problems during copy and re-create
|
||||
for index in table.indexes:
|
||||
index.drop()
|
||||
|
||||
# reflect existing unique constraints
|
||||
for uc in self._get_unique_constraints(table):
|
||||
table.append_constraint(uc)
|
||||
# omit given unique constraints when creating a new table if required
|
||||
table.constraints = set([
|
||||
cons for cons in table.constraints
|
||||
if omit_uniques is None or cons.name not in omit_uniques
|
||||
])
|
||||
|
||||
self.append('ALTER TABLE %s RENAME TO migration_tmp' % table_name)
|
||||
self.execute()
|
||||
|
||||
insertion_string = self._modify_table(table, column, delta)
|
||||
|
||||
table.create(bind=self.connection)
|
||||
self.append(insertion_string % {'table_name': table_name})
|
||||
self.execute()
|
||||
self.append('DROP TABLE migration_tmp')
|
||||
self.execute()
|
||||
|
||||
|
||||
def _visit_migrate_unique_constraint(self, *p, **k):
|
||||
"""Drop the given unique constraint
|
||||
|
||||
The corresponding original method of sqlalchemy-migrate just
|
||||
raises NotImplemented error
|
||||
|
||||
"""
|
||||
|
||||
self.recreate_table(p[0].table, omit_uniques=[p[0].name])
|
||||
|
||||
|
||||
def patch_migrate():
|
||||
"""A workaround for SQLite's inability to alter things
|
||||
|
||||
SQLite abilities to alter tables are very limited (please read
|
||||
http://www.sqlite.org/lang_altertable.html for more details).
|
||||
E. g. one can't drop a column or a constraint in SQLite. The
|
||||
workaround for this is to recreate the original table omitting
|
||||
the corresponding constraint (or column).
|
||||
|
||||
sqlalchemy-migrate library has recreate_table() method that
|
||||
implements this workaround, but it does it wrong:
|
||||
|
||||
- information about unique constraints of a table
|
||||
is not retrieved. So if you have a table with one
|
||||
unique constraint and a migration adding another one
|
||||
you will end up with a table that has only the
|
||||
latter unique constraint, and the former will be lost
|
||||
|
||||
- dropping of unique constraints is not supported at all
|
||||
|
||||
The proper way to fix this is to provide a pull-request to
|
||||
sqlalchemy-migrate, but the project seems to be dead. So we
|
||||
can go on with monkey-patching of the lib at least for now.
|
||||
|
||||
"""
|
||||
|
||||
# this patch is needed to ensure that recreate_table() doesn't drop
|
||||
# existing unique constraints of the table when creating a new one
|
||||
helper_cls = sqlite.SQLiteHelper
|
||||
helper_cls.recreate_table = _recreate_table
|
||||
helper_cls._get_unique_constraints = _get_unique_constraints
|
||||
|
||||
# this patch is needed to be able to drop existing unique constraints
|
||||
constraint_cls = sqlite.SQLiteConstraintDropper
|
||||
constraint_cls.visit_migrate_unique_constraint = \
|
||||
_visit_migrate_unique_constraint
|
||||
constraint_cls.__bases__ = (ansisql.ANSIColumnDropper,
|
||||
sqlite.SQLiteConstraintGenerator)
|
||||
|
||||
|
||||
def db_sync(engine, abs_path, version=None, init_version=0, sanity_check=True):
|
||||
"""Upgrade or downgrade a database.
|
||||
|
||||
Function runs the upgrade() or downgrade() functions in change scripts.
|
||||
|
||||
:param engine: SQLAlchemy engine instance for a given database
|
||||
:param abs_path: Absolute path to migrate repository.
|
||||
:param version: Database will upgrade/downgrade until this version.
|
||||
If None - database will update to the latest
|
||||
available version.
|
||||
:param init_version: Initial database version
|
||||
:param sanity_check: Require schema sanity checking for all tables
|
||||
"""
|
||||
|
||||
if version is not None:
|
||||
try:
|
||||
version = int(version)
|
||||
except ValueError:
|
||||
raise exception.DbMigrationError(
|
||||
message=_("version should be an integer"))
|
||||
|
||||
current_version = db_version(engine, abs_path, init_version)
|
||||
repository = _find_migrate_repo(abs_path)
|
||||
if sanity_check:
|
||||
_db_schema_sanity_check(engine)
|
||||
if version is None or version > current_version:
|
||||
return versioning_api.upgrade(engine, repository, version)
|
||||
else:
|
||||
return versioning_api.downgrade(engine, repository,
|
||||
version)
|
||||
|
||||
|
||||
def _db_schema_sanity_check(engine):
|
||||
"""Ensure all database tables were created with required parameters.
|
||||
|
||||
:param engine: SQLAlchemy engine instance for a given database
|
||||
|
||||
"""
|
||||
|
||||
if engine.name == 'mysql':
|
||||
onlyutf8_sql = ('SELECT TABLE_NAME,TABLE_COLLATION '
|
||||
'from information_schema.TABLES '
|
||||
'where TABLE_SCHEMA=%s and '
|
||||
'TABLE_COLLATION NOT LIKE "%%utf8%%"')
|
||||
|
||||
# NOTE(morganfainberg): exclude the sqlalchemy-migrate and alembic
|
||||
# versioning tables from the tables we need to verify utf8 status on.
|
||||
# Non-standard table names are not supported.
|
||||
EXCLUDED_TABLES = ['migrate_version', 'alembic_version']
|
||||
|
||||
table_names = [res[0] for res in
|
||||
engine.execute(onlyutf8_sql, engine.url.database) if
|
||||
res[0].lower() not in EXCLUDED_TABLES]
|
||||
|
||||
if len(table_names) > 0:
|
||||
raise ValueError(_('Tables "%s" have non utf8 collation, '
|
||||
'please make sure all tables are CHARSET=utf8'
|
||||
) % ','.join(table_names))
|
||||
|
||||
|
||||
def db_version(engine, abs_path, init_version):
|
||||
"""Show the current version of the repository.
|
||||
|
||||
:param engine: SQLAlchemy engine instance for a given database
|
||||
:param abs_path: Absolute path to migrate repository
|
||||
:param version: Initial database version
|
||||
"""
|
||||
repository = _find_migrate_repo(abs_path)
|
||||
try:
|
||||
return versioning_api.db_version(engine, repository)
|
||||
except versioning_exceptions.DatabaseNotControlledError:
|
||||
meta = sqlalchemy.MetaData()
|
||||
meta.reflect(bind=engine)
|
||||
tables = meta.tables
|
||||
if len(tables) == 0 or 'alembic_version' in tables:
|
||||
db_version_control(engine, abs_path, version=init_version)
|
||||
return versioning_api.db_version(engine, repository)
|
||||
else:
|
||||
raise exception.DbMigrationError(
|
||||
message=_(
|
||||
"The database is not under version control, but has "
|
||||
"tables. Please stamp the current version of the schema "
|
||||
"manually."))
|
||||
|
||||
|
||||
def db_version_control(engine, abs_path, version=None):
|
||||
"""Mark a database as under this repository's version control.
|
||||
|
||||
Once a database is under version control, schema changes should
|
||||
only be done via change scripts in this repository.
|
||||
|
||||
:param engine: SQLAlchemy engine instance for a given database
|
||||
:param abs_path: Absolute path to migrate repository
|
||||
:param version: Initial database version
|
||||
"""
|
||||
repository = _find_migrate_repo(abs_path)
|
||||
versioning_api.version_control(engine, repository, version)
|
||||
return version
|
||||
|
||||
|
||||
def _find_migrate_repo(abs_path):
|
||||
"""Get the project's change script repository
|
||||
|
||||
:param abs_path: Absolute path to migrate repository
|
||||
"""
|
||||
if not os.path.exists(abs_path):
|
||||
raise exception.DbMigrationError("Path %s not found" % abs_path)
|
||||
return Repository(abs_path)
|
||||
@ -1,119 +0,0 @@
|
||||
# Copyright (c) 2011 X.commerce, a business unit of eBay Inc.
|
||||
# Copyright 2010 United States Government as represented by the
|
||||
# Administrator of the National Aeronautics and Space Administration.
|
||||
# Copyright 2011 Piston Cloud Computing, Inc.
|
||||
# Copyright 2012 Cloudscaling Group, Inc.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
"""
|
||||
|
||||
import six
|
||||
|
||||
from sqlalchemy import Column, Integer
|
||||
from sqlalchemy import DateTime
|
||||
from sqlalchemy.orm import object_mapper
|
||||
|
||||
from designate.openstack.common import timeutils
|
||||
|
||||
|
||||
class ModelBase(six.Iterator):
|
||||
"""Base class for models."""
|
||||
__table_initialized__ = False
|
||||
|
||||
def save(self, session):
|
||||
"""Save this object."""
|
||||
|
||||
# NOTE(boris-42): This part of code should be look like:
|
||||
# session.add(self)
|
||||
# session.flush()
|
||||
# But there is a bug in sqlalchemy and eventlet that
|
||||
# raises NoneType exception if there is no running
|
||||
# transaction and rollback is called. As long as
|
||||
# sqlalchemy has this bug we have to create transaction
|
||||
# explicitly.
|
||||
with session.begin(subtransactions=True):
|
||||
session.add(self)
|
||||
session.flush()
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
setattr(self, key, value)
|
||||
|
||||
def __getitem__(self, key):
|
||||
return getattr(self, key)
|
||||
|
||||
def get(self, key, default=None):
|
||||
return getattr(self, key, default)
|
||||
|
||||
@property
|
||||
def _extra_keys(self):
|
||||
"""Specifies custom fields
|
||||
|
||||
Subclasses can override this property to return a list
|
||||
of custom fields that should be included in their dict
|
||||
representation.
|
||||
|
||||
For reference check tests/db/sqlalchemy/test_models.py
|
||||
"""
|
||||
return []
|
||||
|
||||
def __iter__(self):
|
||||
columns = dict(object_mapper(self).columns).keys()
|
||||
# NOTE(russellb): Allow models to specify other keys that can be looked
|
||||
# up, beyond the actual db columns. An example would be the 'name'
|
||||
# property for an Instance.
|
||||
columns.extend(self._extra_keys)
|
||||
self._i = iter(columns)
|
||||
return self
|
||||
|
||||
# In Python 3, __next__() has replaced next().
|
||||
def __next__(self):
|
||||
n = six.advance_iterator(self._i)
|
||||
return n, getattr(self, n)
|
||||
|
||||
def next(self):
|
||||
return self.__next__()
|
||||
|
||||
def update(self, values):
|
||||
"""Make the model object behave like a dict."""
|
||||
for k, v in six.iteritems(values):
|
||||
setattr(self, k, v)
|
||||
|
||||
def iteritems(self):
|
||||
"""Make the model object behave like a dict.
|
||||
|
||||
Includes attributes from joins.
|
||||
"""
|
||||
local = dict(self)
|
||||
joined = dict([(k, v) for k, v in six.iteritems(self.__dict__)
|
||||
if not k[0] == '_'])
|
||||
local.update(joined)
|
||||
return six.iteritems(local)
|
||||
|
||||
|
||||
class TimestampMixin(object):
|
||||
created_at = Column(DateTime, default=lambda: timeutils.utcnow())
|
||||
updated_at = Column(DateTime, onupdate=lambda: timeutils.utcnow())
|
||||
|
||||
|
||||
class SoftDeleteMixin(object):
|
||||
deleted_at = Column(DateTime)
|
||||
deleted = Column(Integer, default=0)
|
||||
|
||||
def soft_delete(self, session):
|
||||
"""Mark this object as deleted."""
|
||||
self.deleted = self.id
|
||||
self.deleted_at = timeutils.utcnow()
|
||||
self.save(session=session)
|
||||
@ -1,157 +0,0 @@
|
||||
# Copyright 2013 Mirantis.inc
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
|
||||
"""Provision test environment for specific DB backends"""
|
||||
|
||||
import argparse
|
||||
import logging
|
||||
import os
|
||||
import random
|
||||
import string
|
||||
|
||||
from six import moves
|
||||
import sqlalchemy
|
||||
|
||||
from designate.openstack.common.db import exception as exc
|
||||
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
||||
def get_engine(uri):
|
||||
"""Engine creation
|
||||
|
||||
Call the function without arguments to get admin connection. Admin
|
||||
connection required to create temporary user and database for each
|
||||
particular test. Otherwise use existing connection to recreate connection
|
||||
to the temporary database.
|
||||
"""
|
||||
return sqlalchemy.create_engine(uri, poolclass=sqlalchemy.pool.NullPool)
|
||||
|
||||
|
||||
def _execute_sql(engine, sql, driver):
|
||||
"""Initialize connection, execute sql query and close it."""
|
||||
try:
|
||||
with engine.connect() as conn:
|
||||
if driver == 'postgresql':
|
||||
conn.connection.set_isolation_level(0)
|
||||
for s in sql:
|
||||
conn.execute(s)
|
||||
except sqlalchemy.exc.OperationalError:
|
||||
msg = ('%s does not match database admin '
|
||||
'credentials or database does not exist.')
|
||||
LOG.exception(msg % engine.url)
|
||||
raise exc.DBConnectionError(msg % engine.url)
|
||||
|
||||
|
||||
def create_database(engine):
|
||||
"""Provide temporary user and database for each particular test."""
|
||||
driver = engine.name
|
||||
|
||||
auth = {
|
||||
'database': ''.join(random.choice(string.ascii_lowercase)
|
||||
for i in moves.range(10)),
|
||||
'user': engine.url.username,
|
||||
'passwd': engine.url.password,
|
||||
}
|
||||
|
||||
sqls = [
|
||||
"drop database if exists %(database)s;",
|
||||
"create database %(database)s;"
|
||||
]
|
||||
|
||||
if driver == 'sqlite':
|
||||
return 'sqlite:////tmp/%s' % auth['database']
|
||||
elif driver in ['mysql', 'postgresql']:
|
||||
sql_query = map(lambda x: x % auth, sqls)
|
||||
_execute_sql(engine, sql_query, driver)
|
||||
else:
|
||||
raise ValueError('Unsupported RDBMS %s' % driver)
|
||||
|
||||
params = auth.copy()
|
||||
params['backend'] = driver
|
||||
return "%(backend)s://%(user)s:%(passwd)s@localhost/%(database)s" % params
|
||||
|
||||
|
||||
def drop_database(admin_engine, current_uri):
|
||||
"""Drop temporary database and user after each particular test."""
|
||||
|
||||
engine = get_engine(current_uri)
|
||||
driver = engine.name
|
||||
auth = {'database': engine.url.database, 'user': engine.url.username}
|
||||
|
||||
if driver == 'sqlite':
|
||||
try:
|
||||
os.remove(auth['database'])
|
||||
except OSError:
|
||||
pass
|
||||
elif driver in ['mysql', 'postgresql']:
|
||||
sql = "drop database if exists %(database)s;"
|
||||
_execute_sql(admin_engine, [sql % auth], driver)
|
||||
else:
|
||||
raise ValueError('Unsupported RDBMS %s' % driver)
|
||||
|
||||
|
||||
def main():
|
||||
"""Controller to handle commands
|
||||
|
||||
::create: Create test user and database with random names.
|
||||
::drop: Drop user and database created by previous command.
|
||||
"""
|
||||
parser = argparse.ArgumentParser(
|
||||
description='Controller to handle database creation and dropping'
|
||||
' commands.',
|
||||
epilog='Under normal circumstances is not used directly.'
|
||||
' Used in .testr.conf to automate test database creation'
|
||||
' and dropping processes.')
|
||||
subparsers = parser.add_subparsers(
|
||||
help='Subcommands to manipulate temporary test databases.')
|
||||
|
||||
create = subparsers.add_parser(
|
||||
'create',
|
||||
help='Create temporary test '
|
||||
'databases and users.')
|
||||
create.set_defaults(which='create')
|
||||
create.add_argument(
|
||||
'instances_count',
|
||||
type=int,
|
||||
help='Number of databases to create.')
|
||||
|
||||
drop = subparsers.add_parser(
|
||||
'drop',
|
||||
help='Drop temporary test databases and users.')
|
||||
drop.set_defaults(which='drop')
|
||||
drop.add_argument(
|
||||
'instances',
|
||||
nargs='+',
|
||||
help='List of databases uri to be dropped.')
|
||||
|
||||
args = parser.parse_args()
|
||||
|
||||
connection_string = os.getenv('OS_TEST_DBAPI_ADMIN_CONNECTION',
|
||||
'sqlite://')
|
||||
engine = get_engine(connection_string)
|
||||
which = args.which
|
||||
|
||||
if which == "create":
|
||||
for i in range(int(args.instances_count)):
|
||||
print(create_database(engine))
|
||||
elif which == "drop":
|
||||
for db in args.instances:
|
||||
drop_database(engine, db)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
@ -1,904 +0,0 @@
|
||||
# Copyright 2010 United States Government as represented by the
|
||||
# Administrator of the National Aeronautics and Space Administration.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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.
|
||||
|
||||
"""Session Handling for SQLAlchemy backend.
|
||||
|
||||
Recommended ways to use sessions within this framework:
|
||||
|
||||
* Don't use them explicitly; this is like running with ``AUTOCOMMIT=1``.
|
||||
`model_query()` will implicitly use a session when called without one
|
||||
supplied. This is the ideal situation because it will allow queries
|
||||
to be automatically retried if the database connection is interrupted.
|
||||
|
||||
.. note:: Automatic retry will be enabled in a future patch.
|
||||
|
||||
It is generally fine to issue several queries in a row like this. Even though
|
||||
they may be run in separate transactions and/or separate sessions, each one
|
||||
will see the data from the prior calls. If needed, undo- or rollback-like
|
||||
functionality should be handled at a logical level. For an example, look at
|
||||
the code around quotas and `reservation_rollback()`.
|
||||
|
||||
Examples:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def get_foo(context, foo):
|
||||
return (model_query(context, models.Foo).
|
||||
filter_by(foo=foo).
|
||||
first())
|
||||
|
||||
def update_foo(context, id, newfoo):
|
||||
(model_query(context, models.Foo).
|
||||
filter_by(id=id).
|
||||
update({'foo': newfoo}))
|
||||
|
||||
def create_foo(context, values):
|
||||
foo_ref = models.Foo()
|
||||
foo_ref.update(values)
|
||||
foo_ref.save()
|
||||
return foo_ref
|
||||
|
||||
|
||||
* Within the scope of a single method, keep all the reads and writes within
|
||||
the context managed by a single session. In this way, the session's
|
||||
`__exit__` handler will take care of calling `flush()` and `commit()` for
|
||||
you. If using this approach, you should not explicitly call `flush()` or
|
||||
`commit()`. Any error within the context of the session will cause the
|
||||
session to emit a `ROLLBACK`. Database errors like `IntegrityError` will be
|
||||
raised in `session`'s `__exit__` handler, and any try/except within the
|
||||
context managed by `session` will not be triggered. And catching other
|
||||
non-database errors in the session will not trigger the ROLLBACK, so
|
||||
exception handlers should always be outside the session, unless the
|
||||
developer wants to do a partial commit on purpose. If the connection is
|
||||
dropped before this is possible, the database will implicitly roll back the
|
||||
transaction.
|
||||
|
||||
.. note:: Statements in the session scope will not be automatically retried.
|
||||
|
||||
If you create models within the session, they need to be added, but you
|
||||
do not need to call `model.save()`:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def create_many_foo(context, foos):
|
||||
session = sessionmaker()
|
||||
with session.begin():
|
||||
for foo in foos:
|
||||
foo_ref = models.Foo()
|
||||
foo_ref.update(foo)
|
||||
session.add(foo_ref)
|
||||
|
||||
def update_bar(context, foo_id, newbar):
|
||||
session = sessionmaker()
|
||||
with session.begin():
|
||||
foo_ref = (model_query(context, models.Foo, session).
|
||||
filter_by(id=foo_id).
|
||||
first())
|
||||
(model_query(context, models.Bar, session).
|
||||
filter_by(id=foo_ref['bar_id']).
|
||||
update({'bar': newbar}))
|
||||
|
||||
.. note:: `update_bar` is a trivially simple example of using
|
||||
``with session.begin``. Whereas `create_many_foo` is a good example of
|
||||
when a transaction is needed, it is always best to use as few queries as
|
||||
possible.
|
||||
|
||||
The two queries in `update_bar` can be better expressed using a single query
|
||||
which avoids the need for an explicit transaction. It can be expressed like
|
||||
so:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def update_bar(context, foo_id, newbar):
|
||||
subq = (model_query(context, models.Foo.id).
|
||||
filter_by(id=foo_id).
|
||||
limit(1).
|
||||
subquery())
|
||||
(model_query(context, models.Bar).
|
||||
filter_by(id=subq.as_scalar()).
|
||||
update({'bar': newbar}))
|
||||
|
||||
For reference, this emits approximately the following SQL statement:
|
||||
|
||||
.. code:: sql
|
||||
|
||||
UPDATE bar SET bar = ${newbar}
|
||||
WHERE id=(SELECT bar_id FROM foo WHERE id = ${foo_id} LIMIT 1);
|
||||
|
||||
.. note:: `create_duplicate_foo` is a trivially simple example of catching an
|
||||
exception while using ``with session.begin``. Here create two duplicate
|
||||
instances with same primary key, must catch the exception out of context
|
||||
managed by a single session:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def create_duplicate_foo(context):
|
||||
foo1 = models.Foo()
|
||||
foo2 = models.Foo()
|
||||
foo1.id = foo2.id = 1
|
||||
session = sessionmaker()
|
||||
try:
|
||||
with session.begin():
|
||||
session.add(foo1)
|
||||
session.add(foo2)
|
||||
except exception.DBDuplicateEntry as e:
|
||||
handle_error(e)
|
||||
|
||||
* Passing an active session between methods. Sessions should only be passed
|
||||
to private methods. The private method must use a subtransaction; otherwise
|
||||
SQLAlchemy will throw an error when you call `session.begin()` on an existing
|
||||
transaction. Public methods should not accept a session parameter and should
|
||||
not be involved in sessions within the caller's scope.
|
||||
|
||||
Note that this incurs more overhead in SQLAlchemy than the above means
|
||||
due to nesting transactions, and it is not possible to implicitly retry
|
||||
failed database operations when using this approach.
|
||||
|
||||
This also makes code somewhat more difficult to read and debug, because a
|
||||
single database transaction spans more than one method. Error handling
|
||||
becomes less clear in this situation. When this is needed for code clarity,
|
||||
it should be clearly documented.
|
||||
|
||||
.. code:: python
|
||||
|
||||
def myfunc(foo):
|
||||
session = sessionmaker()
|
||||
with session.begin():
|
||||
# do some database things
|
||||
bar = _private_func(foo, session)
|
||||
return bar
|
||||
|
||||
def _private_func(foo, session=None):
|
||||
if not session:
|
||||
session = sessionmaker()
|
||||
with session.begin(subtransaction=True):
|
||||
# do some other database things
|
||||
return bar
|
||||
|
||||
|
||||
There are some things which it is best to avoid:
|
||||
|
||||
* Don't keep a transaction open any longer than necessary.
|
||||
|
||||
This means that your ``with session.begin()`` block should be as short
|
||||
as possible, while still containing all the related calls for that
|
||||
transaction.
|
||||
|
||||
* Avoid ``with_lockmode('UPDATE')`` when possible.
|
||||
|
||||
In MySQL/InnoDB, when a ``SELECT ... FOR UPDATE`` query does not match
|
||||
any rows, it will take a gap-lock. This is a form of write-lock on the
|
||||
"gap" where no rows exist, and prevents any other writes to that space.
|
||||
This can effectively prevent any INSERT into a table by locking the gap
|
||||
at the end of the index. Similar problems will occur if the SELECT FOR UPDATE
|
||||
has an overly broad WHERE clause, or doesn't properly use an index.
|
||||
|
||||
One idea proposed at ODS Fall '12 was to use a normal SELECT to test the
|
||||
number of rows matching a query, and if only one row is returned,
|
||||
then issue the SELECT FOR UPDATE.
|
||||
|
||||
The better long-term solution is to use
|
||||
``INSERT .. ON DUPLICATE KEY UPDATE``.
|
||||
However, this can not be done until the "deleted" columns are removed and
|
||||
proper UNIQUE constraints are added to the tables.
|
||||
|
||||
|
||||
Enabling soft deletes:
|
||||
|
||||
* To use/enable soft-deletes, the `SoftDeleteMixin` must be added
|
||||
to your model class. For example:
|
||||
|
||||
.. code:: python
|
||||
|
||||
class NovaBase(models.SoftDeleteMixin, models.ModelBase):
|
||||
pass
|
||||
|
||||
|
||||
Efficient use of soft deletes:
|
||||
|
||||
* There are two possible ways to mark a record as deleted:
|
||||
`model.soft_delete()` and `query.soft_delete()`.
|
||||
|
||||
The `model.soft_delete()` method works with a single already-fetched entry.
|
||||
`query.soft_delete()` makes only one db request for all entries that
|
||||
correspond to the query.
|
||||
|
||||
* In almost all cases you should use `query.soft_delete()`. Some examples:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def soft_delete_bar():
|
||||
count = model_query(BarModel).find(some_condition).soft_delete()
|
||||
if count == 0:
|
||||
raise Exception("0 entries were soft deleted")
|
||||
|
||||
def complex_soft_delete_with_synchronization_bar(session=None):
|
||||
if session is None:
|
||||
session = sessionmaker()
|
||||
with session.begin(subtransactions=True):
|
||||
count = (model_query(BarModel).
|
||||
find(some_condition).
|
||||
soft_delete(synchronize_session=True))
|
||||
# Here synchronize_session is required, because we
|
||||
# don't know what is going on in outer session.
|
||||
if count == 0:
|
||||
raise Exception("0 entries were soft deleted")
|
||||
|
||||
* There is only one situation where `model.soft_delete()` is appropriate: when
|
||||
you fetch a single record, work with it, and mark it as deleted in the same
|
||||
transaction.
|
||||
|
||||
.. code:: python
|
||||
|
||||
def soft_delete_bar_model():
|
||||
session = sessionmaker()
|
||||
with session.begin():
|
||||
bar_ref = model_query(BarModel).find(some_condition).first()
|
||||
# Work with bar_ref
|
||||
bar_ref.soft_delete(session=session)
|
||||
|
||||
However, if you need to work with all entries that correspond to query and
|
||||
then soft delete them you should use the `query.soft_delete()` method:
|
||||
|
||||
.. code:: python
|
||||
|
||||
def soft_delete_multi_models():
|
||||
session = sessionmaker()
|
||||
with session.begin():
|
||||
query = (model_query(BarModel, session=session).
|
||||
find(some_condition))
|
||||
model_refs = query.all()
|
||||
# Work with model_refs
|
||||
query.soft_delete(synchronize_session=False)
|
||||
# synchronize_session=False should be set if there is no outer
|
||||
# session and these entries are not used after this.
|
||||
|
||||
When working with many rows, it is very important to use query.soft_delete,
|
||||
which issues a single query. Using `model.soft_delete()`, as in the following
|
||||
example, is very inefficient.
|
||||
|
||||
.. code:: python
|
||||
|
||||
for bar_ref in bar_refs:
|
||||
bar_ref.soft_delete(session=session)
|
||||
# This will produce count(bar_refs) db requests.
|
||||
|
||||
"""
|
||||
|
||||
import functools
|
||||
import logging
|
||||
import re
|
||||
import time
|
||||
|
||||
import six
|
||||
from sqlalchemy import exc as sqla_exc
|
||||
from sqlalchemy.interfaces import PoolListener
|
||||
import sqlalchemy.orm
|
||||
from sqlalchemy.pool import NullPool, StaticPool
|
||||
from sqlalchemy.sql.expression import literal_column
|
||||
|
||||
from designate.openstack.common.db import exception
|
||||
from designate.openstack.common.gettextutils import _LE, _LW
|
||||
from designate.openstack.common import timeutils
|
||||
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class SqliteForeignKeysListener(PoolListener):
|
||||
"""Ensures that the foreign key constraints are enforced in SQLite.
|
||||
|
||||
The foreign key constraints are disabled by default in SQLite,
|
||||
so the foreign key constraints will be enabled here for every
|
||||
database connection
|
||||
"""
|
||||
def connect(self, dbapi_con, con_record):
|
||||
dbapi_con.execute('pragma foreign_keys=ON')
|
||||
|
||||
|
||||
# note(boris-42): In current versions of DB backends unique constraint
|
||||
# violation messages follow the structure:
|
||||
#
|
||||
# sqlite:
|
||||
# 1 column - (IntegrityError) column c1 is not unique
|
||||
# N columns - (IntegrityError) column c1, c2, ..., N are not unique
|
||||
#
|
||||
# sqlite since 3.7.16:
|
||||
# 1 column - (IntegrityError) UNIQUE constraint failed: tbl.k1
|
||||
#
|
||||
# N columns - (IntegrityError) UNIQUE constraint failed: tbl.k1, tbl.k2
|
||||
#
|
||||
# postgres:
|
||||
# 1 column - (IntegrityError) duplicate key value violates unique
|
||||
# constraint "users_c1_key"
|
||||
# N columns - (IntegrityError) duplicate key value violates unique
|
||||
# constraint "name_of_our_constraint"
|
||||
#
|
||||
# mysql:
|
||||
# 1 column - (IntegrityError) (1062, "Duplicate entry 'value_of_c1' for key
|
||||
# 'c1'")
|
||||
# N columns - (IntegrityError) (1062, "Duplicate entry 'values joined
|
||||
# with -' for key 'name_of_our_constraint'")
|
||||
#
|
||||
# ibm_db_sa:
|
||||
# N columns - (IntegrityError) SQL0803N One or more values in the INSERT
|
||||
# statement, UPDATE statement, or foreign key update caused by a
|
||||
# DELETE statement are not valid because the primary key, unique
|
||||
# constraint or unique index identified by "2" constrains table
|
||||
# "NOVA.KEY_PAIRS" from having duplicate values for the index
|
||||
# key.
|
||||
_DUP_KEY_RE_DB = {
|
||||
"sqlite": (re.compile(r"^.*columns?([^)]+)(is|are)\s+not\s+unique$"),
|
||||
re.compile(r"^.*UNIQUE\s+constraint\s+failed:\s+(.+)$")),
|
||||
"postgresql": (re.compile(r"^.*duplicate\s+key.*\"([^\"]+)\"\s*\n.*$"),),
|
||||
"mysql": (re.compile(r"^.*\(1062,.*'([^\']+)'\"\)$"),),
|
||||
"ibm_db_sa": (re.compile(r"^.*SQL0803N.*$"),),
|
||||
}
|
||||
|
||||
|
||||
def _raise_if_duplicate_entry_error(integrity_error, engine_name):
|
||||
"""Raise exception if two entries are duplicated.
|
||||
|
||||
In this function will be raised DBDuplicateEntry exception if integrity
|
||||
error wrap unique constraint violation.
|
||||
"""
|
||||
|
||||
def get_columns_from_uniq_cons_or_name(columns):
|
||||
# note(vsergeyev): UniqueConstraint name convention: "uniq_t0c10c2"
|
||||
# where `t` it is table name and columns `c1`, `c2`
|
||||
# are in UniqueConstraint.
|
||||
uniqbase = "uniq_"
|
||||
if not columns.startswith(uniqbase):
|
||||
if engine_name == "postgresql":
|
||||
return [columns[columns.index("_") + 1:columns.rindex("_")]]
|
||||
return [columns]
|
||||
return columns[len(uniqbase):].split("0")[1:]
|
||||
|
||||
if engine_name not in ["ibm_db_sa", "mysql", "sqlite", "postgresql"]:
|
||||
return
|
||||
|
||||
# FIXME(johannes): The usage of the .message attribute has been
|
||||
# deprecated since Python 2.6. However, the exceptions raised by
|
||||
# SQLAlchemy can differ when using unicode() and accessing .message.
|
||||
# An audit across all three supported engines will be necessary to
|
||||
# ensure there are no regressions.
|
||||
for pattern in _DUP_KEY_RE_DB[engine_name]:
|
||||
match = pattern.match(integrity_error.message)
|
||||
if match:
|
||||
break
|
||||
else:
|
||||
return
|
||||
|
||||
# NOTE(mriedem): The ibm_db_sa integrity error message doesn't provide the
|
||||
# columns so we have to omit that from the DBDuplicateEntry error.
|
||||
columns = ''
|
||||
|
||||
if engine_name != 'ibm_db_sa':
|
||||
columns = match.group(1)
|
||||
|
||||
if engine_name == "sqlite":
|
||||
columns = [c.split('.')[-1] for c in columns.strip().split(", ")]
|
||||
else:
|
||||
columns = get_columns_from_uniq_cons_or_name(columns)
|
||||
raise exception.DBDuplicateEntry(columns, integrity_error)
|
||||
|
||||
|
||||
# NOTE(comstud): In current versions of DB backends, Deadlock violation
|
||||
# messages follow the structure:
|
||||
#
|
||||
# mysql:
|
||||
# (OperationalError) (1213, 'Deadlock found when trying to get lock; try '
|
||||
# 'restarting transaction') <query_str> <query_args>
|
||||
_DEADLOCK_RE_DB = {
|
||||
"mysql": re.compile(r"^.*\(1213, 'Deadlock.*")
|
||||
}
|
||||
|
||||
|
||||
def _raise_if_deadlock_error(operational_error, engine_name):
|
||||
"""Raise exception on deadlock condition.
|
||||
|
||||
Raise DBDeadlock exception if OperationalError contains a Deadlock
|
||||
condition.
|
||||
"""
|
||||
re = _DEADLOCK_RE_DB.get(engine_name)
|
||||
if re is None:
|
||||
return
|
||||
# FIXME(johannes): The usage of the .message attribute has been
|
||||
# deprecated since Python 2.6. However, the exceptions raised by
|
||||
# SQLAlchemy can differ when using unicode() and accessing .message.
|
||||
# An audit across all three supported engines will be necessary to
|
||||
# ensure there are no regressions.
|
||||
m = re.match(operational_error.message)
|
||||
if not m:
|
||||
return
|
||||
raise exception.DBDeadlock(operational_error)
|
||||
|
||||
|
||||
def _wrap_db_error(f):
|
||||
@functools.wraps(f)
|
||||
def _wrap(self, *args, **kwargs):
|
||||
try:
|
||||
assert issubclass(
|
||||
self.__class__, sqlalchemy.orm.session.Session
|
||||
), ('_wrap_db_error() can only be applied to methods of '
|
||||
'subclasses of sqlalchemy.orm.session.Session.')
|
||||
|
||||
return f(self, *args, **kwargs)
|
||||
except UnicodeEncodeError:
|
||||
raise exception.DBInvalidUnicodeParameter()
|
||||
except sqla_exc.OperationalError as e:
|
||||
_raise_if_db_connection_lost(e, self.bind)
|
||||
_raise_if_deadlock_error(e, self.bind.dialect.name)
|
||||
# NOTE(comstud): A lot of code is checking for OperationalError
|
||||
# so let's not wrap it for now.
|
||||
raise
|
||||
# note(boris-42): We should catch unique constraint violation and
|
||||
# wrap it by our own DBDuplicateEntry exception. Unique constraint
|
||||
# violation is wrapped by IntegrityError.
|
||||
except sqla_exc.IntegrityError as e:
|
||||
# note(boris-42): SqlAlchemy doesn't unify errors from different
|
||||
# DBs so we must do this. Also in some tables (for example
|
||||
# instance_types) there are more than one unique constraint. This
|
||||
# means we should get names of columns, which values violate
|
||||
# unique constraint, from error message.
|
||||
_raise_if_duplicate_entry_error(e, self.bind.dialect.name)
|
||||
raise exception.DBError(e)
|
||||
except Exception as e:
|
||||
LOG.exception(_LE('DB exception wrapped.'))
|
||||
raise exception.DBError(e)
|
||||
return _wrap
|
||||
|
||||
|
||||
def _synchronous_switch_listener(dbapi_conn, connection_rec):
|
||||
"""Switch sqlite connections to non-synchronous mode."""
|
||||
dbapi_conn.execute("PRAGMA synchronous = OFF")
|
||||
|
||||
|
||||
def _add_regexp_listener(dbapi_con, con_record):
|
||||
"""Add REGEXP function to sqlite connections."""
|
||||
|
||||
def regexp(expr, item):
|
||||
reg = re.compile(expr)
|
||||
return reg.search(six.text_type(item)) is not None
|
||||
dbapi_con.create_function('regexp', 2, regexp)
|
||||
|
||||
|
||||
def _thread_yield(dbapi_con, con_record):
|
||||
"""Ensure other greenthreads get a chance to be executed.
|
||||
|
||||
If we use eventlet.monkey_patch(), eventlet.greenthread.sleep(0) will
|
||||
execute instead of time.sleep(0).
|
||||
Force a context switch. With common database backends (eg MySQLdb and
|
||||
sqlite), there is no implicit yield caused by network I/O since they are
|
||||
implemented by C libraries that eventlet cannot monkey patch.
|
||||
"""
|
||||
time.sleep(0)
|
||||
|
||||
|
||||
def _ping_listener(engine, dbapi_conn, connection_rec, connection_proxy):
|
||||
"""Ensures that MySQL and DB2 connections are alive.
|
||||
|
||||
Borrowed from:
|
||||
http://groups.google.com/group/sqlalchemy/msg/a4ce563d802c929f
|
||||
"""
|
||||
cursor = dbapi_conn.cursor()
|
||||
try:
|
||||
ping_sql = 'select 1'
|
||||
if engine.name == 'ibm_db_sa':
|
||||
# DB2 requires a table expression
|
||||
ping_sql = 'select 1 from (values (1)) AS t1'
|
||||
cursor.execute(ping_sql)
|
||||
except Exception as ex:
|
||||
if engine.dialect.is_disconnect(ex, dbapi_conn, cursor):
|
||||
msg = _LW('Database server has gone away: %s') % ex
|
||||
LOG.warning(msg)
|
||||
|
||||
# if the database server has gone away, all connections in the pool
|
||||
# have become invalid and we can safely close all of them here,
|
||||
# rather than waste time on checking of every single connection
|
||||
engine.dispose()
|
||||
|
||||
# this will be handled by SQLAlchemy and will force it to create
|
||||
# a new connection and retry the original action
|
||||
raise sqla_exc.DisconnectionError(msg)
|
||||
else:
|
||||
raise
|
||||
|
||||
|
||||
def _set_session_sql_mode(dbapi_con, connection_rec, sql_mode=None):
|
||||
"""Set the sql_mode session variable.
|
||||
|
||||
MySQL supports several server modes. The default is None, but sessions
|
||||
may choose to enable server modes like TRADITIONAL, ANSI,
|
||||
several STRICT_* modes and others.
|
||||
|
||||
Note: passing in '' (empty string) for sql_mode clears
|
||||
the SQL mode for the session, overriding a potentially set
|
||||
server default.
|
||||
"""
|
||||
|
||||
cursor = dbapi_con.cursor()
|
||||
cursor.execute("SET SESSION sql_mode = %s", [sql_mode])
|
||||
|
||||
|
||||
def _mysql_get_effective_sql_mode(engine):
|
||||
"""Returns the effective SQL mode for connections from the engine pool.
|
||||
|
||||
Returns ``None`` if the mode isn't available, otherwise returns the mode.
|
||||
|
||||
"""
|
||||
# Get the real effective SQL mode. Even when unset by
|
||||
# our own config, the server may still be operating in a specific
|
||||
# SQL mode as set by the server configuration.
|
||||
# Also note that the checkout listener will be called on execute to
|
||||
# set the mode if it's registered.
|
||||
row = engine.execute("SHOW VARIABLES LIKE 'sql_mode'").fetchone()
|
||||
if row is None:
|
||||
return
|
||||
return row[1]
|
||||
|
||||
|
||||
def _mysql_check_effective_sql_mode(engine):
|
||||
"""Logs a message based on the effective SQL mode for MySQL connections."""
|
||||
realmode = _mysql_get_effective_sql_mode(engine)
|
||||
|
||||
if realmode is None:
|
||||
LOG.warning(_LW('Unable to detect effective SQL mode'))
|
||||
return
|
||||
|
||||
LOG.debug('MySQL server mode set to %s', realmode)
|
||||
# 'TRADITIONAL' mode enables several other modes, so
|
||||
# we need a substring match here
|
||||
if not ('TRADITIONAL' in realmode.upper() or
|
||||
'STRICT_ALL_TABLES' in realmode.upper()):
|
||||
LOG.warning(_LW("MySQL SQL mode is '%s', "
|
||||
"consider enabling TRADITIONAL or STRICT_ALL_TABLES"),
|
||||
realmode)
|
||||
|
||||
|
||||
def _mysql_set_mode_callback(engine, sql_mode):
|
||||
if sql_mode is not None:
|
||||
mode_callback = functools.partial(_set_session_sql_mode,
|
||||
sql_mode=sql_mode)
|
||||
sqlalchemy.event.listen(engine, 'connect', mode_callback)
|
||||
_mysql_check_effective_sql_mode(engine)
|
||||
|
||||
|
||||
def _is_db_connection_error(args):
|
||||
"""Return True if error in connecting to db."""
|
||||
# NOTE(adam_g): This is currently MySQL specific and needs to be extended
|
||||
# to support Postgres and others.
|
||||
# For the db2, the error code is -30081 since the db2 is still not ready
|
||||
conn_err_codes = ('2002', '2003', '2006', '2013', '-30081')
|
||||
for err_code in conn_err_codes:
|
||||
if args.find(err_code) != -1:
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
def _raise_if_db_connection_lost(error, engine):
|
||||
# NOTE(vsergeyev): Function is_disconnect(e, connection, cursor)
|
||||
# requires connection and cursor in incoming parameters,
|
||||
# but we have no possibility to create connection if DB
|
||||
# is not available, so in such case reconnect fails.
|
||||
# But is_disconnect() ignores these parameters, so it
|
||||
# makes sense to pass to function None as placeholder
|
||||
# instead of connection and cursor.
|
||||
if engine.dialect.is_disconnect(error, None, None):
|
||||
raise exception.DBConnectionError(error)
|
||||
|
||||
|
||||
def create_engine(sql_connection, sqlite_fk=False, mysql_sql_mode=None,
|
||||
idle_timeout=3600,
|
||||
connection_debug=0, max_pool_size=None, max_overflow=None,
|
||||
pool_timeout=None, sqlite_synchronous=True,
|
||||
connection_trace=False, max_retries=10, retry_interval=10):
|
||||
"""Return a new SQLAlchemy engine."""
|
||||
|
||||
connection_dict = sqlalchemy.engine.url.make_url(sql_connection)
|
||||
|
||||
engine_args = {
|
||||
"pool_recycle": idle_timeout,
|
||||
'convert_unicode': True,
|
||||
}
|
||||
|
||||
logger = logging.getLogger('sqlalchemy.engine')
|
||||
|
||||
# Map SQL debug level to Python log level
|
||||
if connection_debug >= 100:
|
||||
logger.setLevel(logging.DEBUG)
|
||||
elif connection_debug >= 50:
|
||||
logger.setLevel(logging.INFO)
|
||||
else:
|
||||
logger.setLevel(logging.WARNING)
|
||||
|
||||
if "sqlite" in connection_dict.drivername:
|
||||
if sqlite_fk:
|
||||
engine_args["listeners"] = [SqliteForeignKeysListener()]
|
||||
engine_args["poolclass"] = NullPool
|
||||
|
||||
if sql_connection == "sqlite://":
|
||||
engine_args["poolclass"] = StaticPool
|
||||
engine_args["connect_args"] = {'check_same_thread': False}
|
||||
else:
|
||||
if max_pool_size is not None:
|
||||
engine_args['pool_size'] = max_pool_size
|
||||
if max_overflow is not None:
|
||||
engine_args['max_overflow'] = max_overflow
|
||||
if pool_timeout is not None:
|
||||
engine_args['pool_timeout'] = pool_timeout
|
||||
|
||||
engine = sqlalchemy.create_engine(sql_connection, **engine_args)
|
||||
|
||||
sqlalchemy.event.listen(engine, 'checkin', _thread_yield)
|
||||
|
||||
if engine.name in ['mysql', 'ibm_db_sa']:
|
||||
ping_callback = functools.partial(_ping_listener, engine)
|
||||
sqlalchemy.event.listen(engine, 'checkout', ping_callback)
|
||||
if engine.name == 'mysql':
|
||||
if mysql_sql_mode:
|
||||
_mysql_set_mode_callback(engine, mysql_sql_mode)
|
||||
elif 'sqlite' in connection_dict.drivername:
|
||||
if not sqlite_synchronous:
|
||||
sqlalchemy.event.listen(engine, 'connect',
|
||||
_synchronous_switch_listener)
|
||||
sqlalchemy.event.listen(engine, 'connect', _add_regexp_listener)
|
||||
|
||||
if connection_trace and engine.dialect.dbapi.__name__ == 'MySQLdb':
|
||||
_patch_mysqldb_with_stacktrace_comments()
|
||||
|
||||
try:
|
||||
engine.connect()
|
||||
except sqla_exc.OperationalError as e:
|
||||
if not _is_db_connection_error(e.args[0]):
|
||||
raise
|
||||
|
||||
remaining = max_retries
|
||||
if remaining == -1:
|
||||
remaining = 'infinite'
|
||||
while True:
|
||||
msg = _LW('SQL connection failed. %s attempts left.')
|
||||
LOG.warning(msg % remaining)
|
||||
if remaining != 'infinite':
|
||||
remaining -= 1
|
||||
time.sleep(retry_interval)
|
||||
try:
|
||||
engine.connect()
|
||||
break
|
||||
except sqla_exc.OperationalError as e:
|
||||
if (remaining != 'infinite' and remaining == 0) or \
|
||||
not _is_db_connection_error(e.args[0]):
|
||||
raise
|
||||
return engine
|
||||
|
||||
|
||||
class Query(sqlalchemy.orm.query.Query):
|
||||
"""Subclass of sqlalchemy.query with soft_delete() method."""
|
||||
def soft_delete(self, synchronize_session='evaluate'):
|
||||
return self.update({'deleted': literal_column('id'),
|
||||
'updated_at': literal_column('updated_at'),
|
||||
'deleted_at': timeutils.utcnow()},
|
||||
synchronize_session=synchronize_session)
|
||||
|
||||
|
||||
class Session(sqlalchemy.orm.session.Session):
|
||||
"""Custom Session class to avoid SqlAlchemy Session monkey patching."""
|
||||
@_wrap_db_error
|
||||
def query(self, *args, **kwargs):
|
||||
return super(Session, self).query(*args, **kwargs)
|
||||
|
||||
@_wrap_db_error
|
||||
def flush(self, *args, **kwargs):
|
||||
return super(Session, self).flush(*args, **kwargs)
|
||||
|
||||
@_wrap_db_error
|
||||
def execute(self, *args, **kwargs):
|
||||
return super(Session, self).execute(*args, **kwargs)
|
||||
|
||||
|
||||
def get_maker(engine, autocommit=True, expire_on_commit=False):
|
||||
"""Return a SQLAlchemy sessionmaker using the given engine."""
|
||||
return sqlalchemy.orm.sessionmaker(bind=engine,
|
||||
class_=Session,
|
||||
autocommit=autocommit,
|
||||
expire_on_commit=expire_on_commit,
|
||||
query_cls=Query)
|
||||
|
||||
|
||||
def _patch_mysqldb_with_stacktrace_comments():
|
||||
"""Adds current stack trace as a comment in queries.
|
||||
|
||||
Patches MySQLdb.cursors.BaseCursor._do_query.
|
||||
"""
|
||||
import MySQLdb.cursors
|
||||
import traceback
|
||||
|
||||
old_mysql_do_query = MySQLdb.cursors.BaseCursor._do_query
|
||||
|
||||
def _do_query(self, q):
|
||||
stack = ''
|
||||
for filename, line, method, function in traceback.extract_stack():
|
||||
# exclude various common things from trace
|
||||
if filename.endswith('session.py') and method == '_do_query':
|
||||
continue
|
||||
if filename.endswith('api.py') and method == 'wrapper':
|
||||
continue
|
||||
if filename.endswith('utils.py') and method == '_inner':
|
||||
continue
|
||||
if filename.endswith('exception.py') and method == '_wrap':
|
||||
continue
|
||||
# db/api is just a wrapper around db/sqlalchemy/api
|
||||
if filename.endswith('db/api.py'):
|
||||
continue
|
||||
# only trace inside designate
|
||||
index = filename.rfind('designate')
|
||||
if index == -1:
|
||||
continue
|
||||
stack += "File:%s:%s Method:%s() Line:%s | " \
|
||||
% (filename[index:], line, method, function)
|
||||
|
||||
# strip trailing " | " from stack
|
||||
if stack:
|
||||
stack = stack[:-3]
|
||||
qq = "%s /* %s */" % (q, stack)
|
||||
else:
|
||||
qq = q
|
||||
old_mysql_do_query(self, qq)
|
||||
|
||||
setattr(MySQLdb.cursors.BaseCursor, '_do_query', _do_query)
|
||||
|
||||
|
||||
class EngineFacade(object):
|
||||
"""A helper class for removing of global engine instances from designate.db.
|
||||
|
||||
As a library, designate.db can't decide where to store/when to create engine
|
||||
and sessionmaker instances, so this must be left for a target application.
|
||||
|
||||
On the other hand, in order to simplify the adoption of designate.db changes,
|
||||
we'll provide a helper class, which creates engine and sessionmaker
|
||||
on its instantiation and provides get_engine()/get_session() methods
|
||||
that are compatible with corresponding utility functions that currently
|
||||
exist in target projects, e.g. in Nova.
|
||||
|
||||
engine/sessionmaker instances will still be global (and they are meant to
|
||||
be global), but they will be stored in the app context, rather that in the
|
||||
designate.db context.
|
||||
|
||||
Note: using of this helper is completely optional and you are encouraged to
|
||||
integrate engine/sessionmaker instances into your apps any way you like
|
||||
(e.g. one might want to bind a session to a request context). Two important
|
||||
things to remember:
|
||||
|
||||
1. An Engine instance is effectively a pool of DB connections, so it's
|
||||
meant to be shared (and it's thread-safe).
|
||||
2. A Session instance is not meant to be shared and represents a DB
|
||||
transactional context (i.e. it's not thread-safe). sessionmaker is
|
||||
a factory of sessions.
|
||||
|
||||
"""
|
||||
|
||||
def __init__(self, sql_connection,
|
||||
sqlite_fk=False, autocommit=True,
|
||||
expire_on_commit=False, **kwargs):
|
||||
"""Initialize engine and sessionmaker instances.
|
||||
|
||||
:param sqlite_fk: enable foreign keys in SQLite
|
||||
:type sqlite_fk: bool
|
||||
|
||||
:param autocommit: use autocommit mode for created Session instances
|
||||
:type autocommit: bool
|
||||
|
||||
:param expire_on_commit: expire session objects on commit
|
||||
:type expire_on_commit: bool
|
||||
|
||||
Keyword arguments:
|
||||
|
||||
:keyword mysql_sql_mode: the SQL mode to be used for MySQL sessions.
|
||||
(defaults to TRADITIONAL)
|
||||
:keyword idle_timeout: timeout before idle sql connections are reaped
|
||||
(defaults to 3600)
|
||||
:keyword connection_debug: verbosity of SQL debugging information.
|
||||
0=None, 100=Everything (defaults to 0)
|
||||
:keyword max_pool_size: maximum number of SQL connections to keep open
|
||||
in a pool (defaults to SQLAlchemy settings)
|
||||
:keyword max_overflow: if set, use this value for max_overflow with
|
||||
sqlalchemy (defaults to SQLAlchemy settings)
|
||||
:keyword pool_timeout: if set, use this value for pool_timeout with
|
||||
sqlalchemy (defaults to SQLAlchemy settings)
|
||||
:keyword sqlite_synchronous: if True, SQLite uses synchronous mode
|
||||
(defaults to True)
|
||||
:keyword connection_trace: add python stack traces to SQL as comment
|
||||
strings (defaults to False)
|
||||
:keyword max_retries: maximum db connection retries during startup.
|
||||
(setting -1 implies an infinite retry count)
|
||||
(defaults to 10)
|
||||
:keyword retry_interval: interval between retries of opening a sql
|
||||
connection (defaults to 10)
|
||||
|
||||
"""
|
||||
|
||||
super(EngineFacade, self).__init__()
|
||||
|
||||
self._engine = create_engine(
|
||||
sql_connection=sql_connection,
|
||||
sqlite_fk=sqlite_fk,
|
||||
mysql_sql_mode=kwargs.get('mysql_sql_mode', 'TRADITIONAL'),
|
||||
idle_timeout=kwargs.get('idle_timeout', 3600),
|
||||
connection_debug=kwargs.get('connection_debug', 0),
|
||||
max_pool_size=kwargs.get('max_pool_size'),
|
||||
max_overflow=kwargs.get('max_overflow'),
|
||||
pool_timeout=kwargs.get('pool_timeout'),
|
||||
sqlite_synchronous=kwargs.get('sqlite_synchronous', True),
|
||||
connection_trace=kwargs.get('connection_trace', False),
|
||||
max_retries=kwargs.get('max_retries', 10),
|
||||
retry_interval=kwargs.get('retry_interval', 10))
|
||||
self._session_maker = get_maker(
|
||||
engine=self._engine,
|
||||
autocommit=autocommit,
|
||||
expire_on_commit=expire_on_commit)
|
||||
|
||||
def get_engine(self):
|
||||
"""Get the engine instance (note, that it's shared)."""
|
||||
|
||||
return self._engine
|
||||
|
||||
def get_session(self, **kwargs):
|
||||
"""Get a Session instance.
|
||||
|
||||
If passed, keyword arguments values override the ones used when the
|
||||
sessionmaker instance was created.
|
||||
|
||||
:keyword autocommit: use autocommit mode for created Session instances
|
||||
:type autocommit: bool
|
||||
|
||||
:keyword expire_on_commit: expire session objects on commit
|
||||
:type expire_on_commit: bool
|
||||
|
||||
"""
|
||||
|
||||
for arg in kwargs:
|
||||
if arg not in ('autocommit', 'expire_on_commit'):
|
||||
del kwargs[arg]
|
||||
|
||||
return self._session_maker(**kwargs)
|
||||
|
||||
@classmethod
|
||||
def from_config(cls, connection_string, conf,
|
||||
sqlite_fk=False, autocommit=True, expire_on_commit=False):
|
||||
"""Initialize EngineFacade using oslo.config config instance options.
|
||||
|
||||
:param connection_string: SQLAlchemy connection string
|
||||
:type connection_string: string
|
||||
|
||||
:param conf: oslo.config config instance
|
||||
:type conf: oslo.config.cfg.ConfigOpts
|
||||
|
||||
:param sqlite_fk: enable foreign keys in SQLite
|
||||
:type sqlite_fk: bool
|
||||
|
||||
:param autocommit: use autocommit mode for created Session instances
|
||||
:type autocommit: bool
|
||||
|
||||
:param expire_on_commit: expire session objects on commit
|
||||
:type expire_on_commit: bool
|
||||
|
||||
"""
|
||||
|
||||
return cls(sql_connection=connection_string,
|
||||
sqlite_fk=sqlite_fk,
|
||||
autocommit=autocommit,
|
||||
expire_on_commit=expire_on_commit,
|
||||
**dict(conf.database.items()))
|
||||
@ -1,153 +0,0 @@
|
||||
# Copyright (c) 2013 OpenStack Foundation
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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 abc
|
||||
import functools
|
||||
import os
|
||||
|
||||
import fixtures
|
||||
import six
|
||||
|
||||
from designate.openstack.common.db.sqlalchemy import session
|
||||
from designate.openstack.common.db.sqlalchemy import utils
|
||||
from designate.openstack.common.fixture import lockutils
|
||||
from designate.openstack.common import test
|
||||
|
||||
|
||||
class DbFixture(fixtures.Fixture):
|
||||
"""Basic database fixture.
|
||||
|
||||
Allows to run tests on various db backends, such as SQLite, MySQL and
|
||||
PostgreSQL. By default use sqlite backend. To override default backend
|
||||
uri set env variable OS_TEST_DBAPI_CONNECTION with database admin
|
||||
credentials for specific backend.
|
||||
"""
|
||||
|
||||
def _get_uri(self):
|
||||
return os.getenv('OS_TEST_DBAPI_CONNECTION', 'sqlite://')
|
||||
|
||||
def __init__(self, test):
|
||||
super(DbFixture, self).__init__()
|
||||
|
||||
self.test = test
|
||||
|
||||
def setUp(self):
|
||||
super(DbFixture, self).setUp()
|
||||
|
||||
self.test.engine = session.create_engine(self._get_uri())
|
||||
self.test.sessionmaker = session.get_maker(self.test.engine)
|
||||
self.addCleanup(self.test.engine.dispose)
|
||||
|
||||
|
||||
class DbTestCase(test.BaseTestCase):
|
||||
"""Base class for testing of DB code.
|
||||
|
||||
Using `DbFixture`. Intended to be the main database test case to use all
|
||||
the tests on a given backend with user defined uri. Backend specific
|
||||
tests should be decorated with `backend_specific` decorator.
|
||||
"""
|
||||
|
||||
FIXTURE = DbFixture
|
||||
|
||||
def setUp(self):
|
||||
super(DbTestCase, self).setUp()
|
||||
self.useFixture(self.FIXTURE(self))
|
||||
|
||||
|
||||
ALLOWED_DIALECTS = ['sqlite', 'mysql', 'postgresql']
|
||||
|
||||
|
||||
def backend_specific(*dialects):
|
||||
"""Decorator to skip backend specific tests on inappropriate engines.
|
||||
|
||||
::dialects: list of dialects names under which the test will be launched.
|
||||
"""
|
||||
def wrap(f):
|
||||
@functools.wraps(f)
|
||||
def ins_wrap(self):
|
||||
if not set(dialects).issubset(ALLOWED_DIALECTS):
|
||||
raise ValueError(
|
||||
"Please use allowed dialects: %s" % ALLOWED_DIALECTS)
|
||||
if self.engine.name not in dialects:
|
||||
msg = ('The test "%s" can be run '
|
||||
'only on %s. Current engine is %s.')
|
||||
args = (f.__name__, ' '.join(dialects), self.engine.name)
|
||||
self.skip(msg % args)
|
||||
else:
|
||||
return f(self)
|
||||
return ins_wrap
|
||||
return wrap
|
||||
|
||||
|
||||
@six.add_metaclass(abc.ABCMeta)
|
||||
class OpportunisticFixture(DbFixture):
|
||||
"""Base fixture to use default CI databases.
|
||||
|
||||
The databases exist in OpenStack CI infrastructure. But for the
|
||||
correct functioning in local environment the databases must be
|
||||
created manually.
|
||||
"""
|
||||
|
||||
DRIVER = abc.abstractproperty(lambda: None)
|
||||
DBNAME = PASSWORD = USERNAME = 'openstack_citest'
|
||||
|
||||
def _get_uri(self):
|
||||
return utils.get_connect_string(backend=self.DRIVER,
|
||||
user=self.USERNAME,
|
||||
passwd=self.PASSWORD,
|
||||
database=self.DBNAME)
|
||||
|
||||
|
||||
@six.add_metaclass(abc.ABCMeta)
|
||||
class OpportunisticTestCase(DbTestCase):
|
||||
"""Base test case to use default CI databases.
|
||||
|
||||
The subclasses of the test case are running only when openstack_citest
|
||||
database is available otherwise a tests will be skipped.
|
||||
"""
|
||||
|
||||
FIXTURE = abc.abstractproperty(lambda: None)
|
||||
|
||||
def setUp(self):
|
||||
# TODO(bnemec): Remove this once infra is ready for
|
||||
# https://review.openstack.org/#/c/74963/ to merge.
|
||||
self.useFixture(lockutils.LockFixture('opportunistic-db'))
|
||||
credentials = {
|
||||
'backend': self.FIXTURE.DRIVER,
|
||||
'user': self.FIXTURE.USERNAME,
|
||||
'passwd': self.FIXTURE.PASSWORD,
|
||||
'database': self.FIXTURE.DBNAME}
|
||||
|
||||
if self.FIXTURE.DRIVER and not utils.is_backend_avail(**credentials):
|
||||
msg = '%s backend is not available.' % self.FIXTURE.DRIVER
|
||||
return self.skip(msg)
|
||||
|
||||
super(OpportunisticTestCase, self).setUp()
|
||||
|
||||
|
||||
class MySQLOpportunisticFixture(OpportunisticFixture):
|
||||
DRIVER = 'mysql'
|
||||
|
||||
|
||||
class PostgreSQLOpportunisticFixture(OpportunisticFixture):
|
||||
DRIVER = 'postgresql'
|
||||
|
||||
|
||||
class MySQLOpportunisticTestCase(OpportunisticTestCase):
|
||||
FIXTURE = MySQLOpportunisticFixture
|
||||
|
||||
|
||||
class PostgreSQLOpportunisticTestCase(OpportunisticTestCase):
|
||||
FIXTURE = PostgreSQLOpportunisticFixture
|
||||
@ -1,269 +0,0 @@
|
||||
# Copyright 2010-2011 OpenStack Foundation
|
||||
# Copyright 2012-2013 IBM Corp.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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 functools
|
||||
import logging
|
||||
import os
|
||||
import subprocess
|
||||
|
||||
import lockfile
|
||||
from six import moves
|
||||
from six.moves.urllib import parse
|
||||
import sqlalchemy
|
||||
import sqlalchemy.exc
|
||||
|
||||
from designate.openstack.common.db.sqlalchemy import utils
|
||||
from designate.openstack.common.gettextutils import _LE
|
||||
from designate.openstack.common import test
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
||||
def _have_mysql(user, passwd, database):
|
||||
present = os.environ.get('TEST_MYSQL_PRESENT')
|
||||
if present is None:
|
||||
return utils.is_backend_avail(backend='mysql',
|
||||
user=user,
|
||||
passwd=passwd,
|
||||
database=database)
|
||||
return present.lower() in ('', 'true')
|
||||
|
||||
|
||||
def _have_postgresql(user, passwd, database):
|
||||
present = os.environ.get('TEST_POSTGRESQL_PRESENT')
|
||||
if present is None:
|
||||
return utils.is_backend_avail(backend='postgres',
|
||||
user=user,
|
||||
passwd=passwd,
|
||||
database=database)
|
||||
return present.lower() in ('', 'true')
|
||||
|
||||
|
||||
def _set_db_lock(lock_path=None, lock_prefix=None):
|
||||
def decorator(f):
|
||||
@functools.wraps(f)
|
||||
def wrapper(*args, **kwargs):
|
||||
try:
|
||||
path = lock_path or os.environ.get("DESIGNATE_LOCK_PATH")
|
||||
lock = lockfile.FileLock(os.path.join(path, lock_prefix))
|
||||
with lock:
|
||||
LOG.debug('Got lock "%s"' % f.__name__)
|
||||
return f(*args, **kwargs)
|
||||
finally:
|
||||
LOG.debug('Lock released "%s"' % f.__name__)
|
||||
return wrapper
|
||||
return decorator
|
||||
|
||||
|
||||
class BaseMigrationTestCase(test.BaseTestCase):
|
||||
"""Base class fort testing of migration utils."""
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super(BaseMigrationTestCase, self).__init__(*args, **kwargs)
|
||||
|
||||
self.DEFAULT_CONFIG_FILE = os.path.join(os.path.dirname(__file__),
|
||||
'test_migrations.conf')
|
||||
# Test machines can set the TEST_MIGRATIONS_CONF variable
|
||||
# to override the location of the config file for migration testing
|
||||
self.CONFIG_FILE_PATH = os.environ.get('TEST_MIGRATIONS_CONF',
|
||||
self.DEFAULT_CONFIG_FILE)
|
||||
self.test_databases = {}
|
||||
self.migration_api = None
|
||||
|
||||
def setUp(self):
|
||||
super(BaseMigrationTestCase, self).setUp()
|
||||
|
||||
# Load test databases from the config file. Only do this
|
||||
# once. No need to re-run this on each test...
|
||||
LOG.debug('config_path is %s' % self.CONFIG_FILE_PATH)
|
||||
if os.path.exists(self.CONFIG_FILE_PATH):
|
||||
cp = moves.configparser.RawConfigParser()
|
||||
try:
|
||||
cp.read(self.CONFIG_FILE_PATH)
|
||||
defaults = cp.defaults()
|
||||
for key, value in defaults.items():
|
||||
self.test_databases[key] = value
|
||||
except moves.configparser.ParsingError as e:
|
||||
self.fail("Failed to read test_migrations.conf config "
|
||||
"file. Got error: %s" % e)
|
||||
else:
|
||||
self.fail("Failed to find test_migrations.conf config "
|
||||
"file.")
|
||||
|
||||
self.engines = {}
|
||||
for key, value in self.test_databases.items():
|
||||
self.engines[key] = sqlalchemy.create_engine(value)
|
||||
|
||||
# We start each test case with a completely blank slate.
|
||||
self._reset_databases()
|
||||
|
||||
def tearDown(self):
|
||||
# We destroy the test data store between each test case,
|
||||
# and recreate it, which ensures that we have no side-effects
|
||||
# from the tests
|
||||
self._reset_databases()
|
||||
super(BaseMigrationTestCase, self).tearDown()
|
||||
|
||||
def execute_cmd(self, cmd=None):
|
||||
process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
|
||||
stderr=subprocess.STDOUT)
|
||||
output = process.communicate()[0]
|
||||
LOG.debug(output)
|
||||
self.assertEqual(0, process.returncode,
|
||||
"Failed to run: %s\n%s" % (cmd, output))
|
||||
|
||||
def _reset_pg(self, conn_pieces):
|
||||
(user,
|
||||
password,
|
||||
database,
|
||||
host) = utils.get_db_connection_info(conn_pieces)
|
||||
os.environ['PGPASSWORD'] = password
|
||||
os.environ['PGUSER'] = user
|
||||
# note(boris-42): We must create and drop database, we can't
|
||||
# drop database which we have connected to, so for such
|
||||
# operations there is a special database template1.
|
||||
sqlcmd = ("psql -w -U %(user)s -h %(host)s -c"
|
||||
" '%(sql)s' -d template1")
|
||||
|
||||
sql = ("drop database if exists %s;") % database
|
||||
droptable = sqlcmd % {'user': user, 'host': host, 'sql': sql}
|
||||
self.execute_cmd(droptable)
|
||||
|
||||
sql = ("create database %s;") % database
|
||||
createtable = sqlcmd % {'user': user, 'host': host, 'sql': sql}
|
||||
self.execute_cmd(createtable)
|
||||
|
||||
os.unsetenv('PGPASSWORD')
|
||||
os.unsetenv('PGUSER')
|
||||
|
||||
@_set_db_lock(lock_prefix='migration_tests-')
|
||||
def _reset_databases(self):
|
||||
for key, engine in self.engines.items():
|
||||
conn_string = self.test_databases[key]
|
||||
conn_pieces = parse.urlparse(conn_string)
|
||||
engine.dispose()
|
||||
if conn_string.startswith('sqlite'):
|
||||
# We can just delete the SQLite database, which is
|
||||
# the easiest and cleanest solution
|
||||
db_path = conn_pieces.path.strip('/')
|
||||
if os.path.exists(db_path):
|
||||
os.unlink(db_path)
|
||||
# No need to recreate the SQLite DB. SQLite will
|
||||
# create it for us if it's not there...
|
||||
elif conn_string.startswith('mysql'):
|
||||
# We can execute the MySQL client to destroy and re-create
|
||||
# the MYSQL database, which is easier and less error-prone
|
||||
# than using SQLAlchemy to do this via MetaData...trust me.
|
||||
(user, password, database, host) = \
|
||||
utils.get_db_connection_info(conn_pieces)
|
||||
sql = ("drop database if exists %(db)s; "
|
||||
"create database %(db)s;") % {'db': database}
|
||||
cmd = ("mysql -u \"%(user)s\" -p\"%(password)s\" -h %(host)s "
|
||||
"-e \"%(sql)s\"") % {'user': user, 'password': password,
|
||||
'host': host, 'sql': sql}
|
||||
self.execute_cmd(cmd)
|
||||
elif conn_string.startswith('postgresql'):
|
||||
self._reset_pg(conn_pieces)
|
||||
|
||||
|
||||
class WalkVersionsMixin(object):
|
||||
def _walk_versions(self, engine=None, snake_walk=False, downgrade=True):
|
||||
# Determine latest version script from the repo, then
|
||||
# upgrade from 1 through to the latest, with no data
|
||||
# in the databases. This just checks that the schema itself
|
||||
# upgrades successfully.
|
||||
|
||||
# Place the database under version control
|
||||
self.migration_api.version_control(engine, self.REPOSITORY,
|
||||
self.INIT_VERSION)
|
||||
self.assertEqual(self.INIT_VERSION,
|
||||
self.migration_api.db_version(engine,
|
||||
self.REPOSITORY))
|
||||
|
||||
LOG.debug('latest version is %s' % self.REPOSITORY.latest)
|
||||
versions = range(self.INIT_VERSION + 1, self.REPOSITORY.latest + 1)
|
||||
|
||||
for version in versions:
|
||||
# upgrade -> downgrade -> upgrade
|
||||
self._migrate_up(engine, version, with_data=True)
|
||||
if snake_walk:
|
||||
downgraded = self._migrate_down(
|
||||
engine, version - 1, with_data=True)
|
||||
if downgraded:
|
||||
self._migrate_up(engine, version)
|
||||
|
||||
if downgrade:
|
||||
# Now walk it back down to 0 from the latest, testing
|
||||
# the downgrade paths.
|
||||
for version in reversed(versions):
|
||||
# downgrade -> upgrade -> downgrade
|
||||
downgraded = self._migrate_down(engine, version - 1)
|
||||
|
||||
if snake_walk and downgraded:
|
||||
self._migrate_up(engine, version)
|
||||
self._migrate_down(engine, version - 1)
|
||||
|
||||
def _migrate_down(self, engine, version, with_data=False):
|
||||
try:
|
||||
self.migration_api.downgrade(engine, self.REPOSITORY, version)
|
||||
except NotImplementedError:
|
||||
# NOTE(sirp): some migrations, namely release-level
|
||||
# migrations, don't support a downgrade.
|
||||
return False
|
||||
|
||||
self.assertEqual(
|
||||
version, self.migration_api.db_version(engine, self.REPOSITORY))
|
||||
|
||||
# NOTE(sirp): `version` is what we're downgrading to (i.e. the 'target'
|
||||
# version). So if we have any downgrade checks, they need to be run for
|
||||
# the previous (higher numbered) migration.
|
||||
if with_data:
|
||||
post_downgrade = getattr(
|
||||
self, "_post_downgrade_%03d" % (version + 1), None)
|
||||
if post_downgrade:
|
||||
post_downgrade(engine)
|
||||
|
||||
return True
|
||||
|
||||
def _migrate_up(self, engine, version, with_data=False):
|
||||
"""migrate up to a new version of the db.
|
||||
|
||||
We allow for data insertion and post checks at every
|
||||
migration version with special _pre_upgrade_### and
|
||||
_check_### functions in the main test.
|
||||
"""
|
||||
# NOTE(sdague): try block is here because it's impossible to debug
|
||||
# where a failed data migration happens otherwise
|
||||
try:
|
||||
if with_data:
|
||||
data = None
|
||||
pre_upgrade = getattr(
|
||||
self, "_pre_upgrade_%03d" % version, None)
|
||||
if pre_upgrade:
|
||||
data = pre_upgrade(engine)
|
||||
|
||||
self.migration_api.upgrade(engine, self.REPOSITORY, version)
|
||||
self.assertEqual(version,
|
||||
self.migration_api.db_version(engine,
|
||||
self.REPOSITORY))
|
||||
if with_data:
|
||||
check = getattr(self, "_check_%03d" % version, None)
|
||||
if check:
|
||||
check(engine, data)
|
||||
except Exception:
|
||||
LOG.error(_LE("Failed to migrate to version %s on engine %s") %
|
||||
(version, engine))
|
||||
raise
|
||||
@ -1,647 +0,0 @@
|
||||
# Copyright 2010 United States Government as represented by the
|
||||
# Administrator of the National Aeronautics and Space Administration.
|
||||
# Copyright 2010-2011 OpenStack Foundation.
|
||||
# Copyright 2012 Justin Santa Barbara
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# 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 logging
|
||||
import re
|
||||
|
||||
import sqlalchemy
|
||||
from sqlalchemy import Boolean
|
||||
from sqlalchemy import CheckConstraint
|
||||
from sqlalchemy import Column
|
||||
from sqlalchemy.engine import reflection
|
||||
from sqlalchemy.ext.compiler import compiles
|
||||
from sqlalchemy import func
|
||||
from sqlalchemy import Index
|
||||
from sqlalchemy import Integer
|
||||
from sqlalchemy import MetaData
|
||||
from sqlalchemy import or_
|
||||
from sqlalchemy.sql.expression import literal_column
|
||||
from sqlalchemy.sql.expression import UpdateBase
|
||||
from sqlalchemy import String
|
||||
from sqlalchemy import Table
|
||||
from sqlalchemy.types import NullType
|
||||
|
||||
from designate.openstack.common import context as request_context
|
||||
from designate.openstack.common.db.sqlalchemy import models
|
||||
from designate.openstack.common.gettextutils import _, _LI, _LW
|
||||
from designate.openstack.common import timeutils
|
||||
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
_DBURL_REGEX = re.compile(r"[^:]+://([^:]+):([^@]+)@.+")
|
||||
|
||||
|
||||
def sanitize_db_url(url):
|
||||
match = _DBURL_REGEX.match(url)
|
||||
if match:
|
||||
return '%s****:****%s' % (url[:match.start(1)], url[match.end(2):])
|
||||
return url
|
||||
|
||||
|
||||
class InvalidSortKey(Exception):
|
||||
message = _("Sort key supplied was not valid.")
|
||||
|
||||
|
||||
# copy from glance/db/sqlalchemy/api.py
|
||||
def paginate_query(query, model, limit, sort_keys, marker=None,
|
||||
sort_dir=None, sort_dirs=None):
|
||||
"""Returns a query with sorting / pagination criteria added.
|
||||
|
||||
Pagination works by requiring a unique sort_key, specified by sort_keys.
|
||||
(If sort_keys is not unique, then we risk looping through values.)
|
||||
We use the last row in the previous page as the 'marker' for pagination.
|
||||
So we must return values that follow the passed marker in the order.
|
||||
With a single-valued sort_key, this would be easy: sort_key > X.
|
||||
With a compound-values sort_key, (k1, k2, k3) we must do this to repeat
|
||||
the lexicographical ordering:
|
||||
(k1 > X1) or (k1 == X1 && k2 > X2) or (k1 == X1 && k2 == X2 && k3 > X3)
|
||||
|
||||
We also have to cope with different sort_directions.
|
||||
|
||||
Typically, the id of the last row is used as the client-facing pagination
|
||||
marker, then the actual marker object must be fetched from the db and
|
||||
passed in to us as marker.
|
||||
|
||||
:param query: the query object to which we should add paging/sorting
|
||||
:param model: the ORM model class
|
||||
:param limit: maximum number of items to return
|
||||
:param sort_keys: array of attributes by which results should be sorted
|
||||
:param marker: the last item of the previous page; we returns the next
|
||||
results after this value.
|
||||
:param sort_dir: direction in which results should be sorted (asc, desc)
|
||||
:param sort_dirs: per-column array of sort_dirs, corresponding to sort_keys
|
||||
|
||||
:rtype: sqlalchemy.orm.query.Query
|
||||
:return: The query with sorting/pagination added.
|
||||
"""
|
||||
|
||||
if 'id' not in sort_keys:
|
||||
# TODO(justinsb): If this ever gives a false-positive, check
|
||||
# the actual primary key, rather than assuming its id
|
||||
LOG.warning(_LW('Id not in sort_keys; is sort_keys unique?'))
|
||||
|
||||
assert(not (sort_dir and sort_dirs))
|
||||
|
||||
# Default the sort direction to ascending
|
||||
if sort_dirs is None and sort_dir is None:
|
||||
sort_dir = 'asc'
|
||||
|
||||
# Ensure a per-column sort direction
|
||||
if sort_dirs is None:
|
||||
sort_dirs = [sort_dir for _sort_key in sort_keys]
|
||||
|
||||
assert(len(sort_dirs) == len(sort_keys))
|
||||
|
||||
# Add sorting
|
||||
for current_sort_key, current_sort_dir in zip(sort_keys, sort_dirs):
|
||||
try:
|
||||
sort_dir_func = {
|
||||
'asc': sqlalchemy.asc,
|
||||
'desc': sqlalchemy.desc,
|
||||
}[current_sort_dir]
|
||||
except KeyError:
|
||||
raise ValueError(_("Unknown sort direction, "
|
||||
"must be 'desc' or 'asc'"))
|
||||
try:
|
||||
sort_key_attr = getattr(model, current_sort_key)
|
||||
except AttributeError:
|
||||
raise InvalidSortKey()
|
||||
query = query.order_by(sort_dir_func(sort_key_attr))
|
||||
|
||||
# Add pagination
|
||||
if marker is not None:
|
||||
marker_values = []
|
||||
for sort_key in sort_keys:
|
||||
v = getattr(marker, sort_key)
|
||||
marker_values.append(v)
|
||||
|
||||
# Build up an array of sort criteria as in the docstring
|
||||
criteria_list = []
|
||||
for i in range(len(sort_keys)):
|
||||
crit_attrs = []
|
||||
for j in range(i):
|
||||
model_attr = getattr(model, sort_keys[j])
|
||||
crit_attrs.append((model_attr == marker_values[j]))
|
||||
|
||||
model_attr = getattr(model, sort_keys[i])
|
||||
if sort_dirs[i] == 'desc':
|
||||
crit_attrs.append((model_attr < marker_values[i]))
|
||||
else:
|
||||
crit_attrs.append((model_attr > marker_values[i]))
|
||||
|
||||
criteria = sqlalchemy.sql.and_(*crit_attrs)
|
||||
criteria_list.append(criteria)
|
||||
|
||||
f = sqlalchemy.sql.or_(*criteria_list)
|
||||
query = query.filter(f)
|
||||
|
||||
if limit is not None:
|
||||
query = query.limit(limit)
|
||||
|
||||
return query
|
||||
|
||||
|
||||
def _read_deleted_filter(query, db_model, read_deleted):
|
||||
if 'deleted' not in db_model.__table__.columns:
|
||||
raise ValueError(_("There is no `deleted` column in `%s` table. "
|
||||
"Project doesn't use soft-deleted feature.")
|
||||
% db_model.__name__)
|
||||
|
||||
default_deleted_value = db_model.__table__.c.deleted.default.arg
|
||||
if read_deleted == 'no':
|
||||
query = query.filter(db_model.deleted == default_deleted_value)
|
||||
elif read_deleted == 'yes':
|
||||
pass # omit the filter to include deleted and active
|
||||
elif read_deleted == 'only':
|
||||
query = query.filter(db_model.deleted != default_deleted_value)
|
||||
else:
|
||||
raise ValueError(_("Unrecognized read_deleted value '%s'")
|
||||
% read_deleted)
|
||||
return query
|
||||
|
||||
|
||||
def _project_filter(query, db_model, context, project_only):
|
||||
if project_only and 'project_id' not in db_model.__table__.columns:
|
||||
raise ValueError(_("There is no `project_id` column in `%s` table.")
|
||||
% db_model.__name__)
|
||||
|
||||
if request_context.is_user_context(context) and project_only:
|
||||
if project_only == 'allow_none':
|
||||
is_none = None
|
||||
query = query.filter(or_(db_model.project_id == context.project_id,
|
||||
db_model.project_id == is_none))
|
||||
else:
|
||||
query = query.filter(db_model.project_id == context.project_id)
|
||||
|
||||
return query
|
||||
|
||||
|
||||
def model_query(context, model, session, args=None, project_only=False,
|
||||
read_deleted=None):
|
||||
"""Query helper that accounts for context's `read_deleted` field.
|
||||
|
||||
:param context: context to query under
|
||||
|
||||
:param model: Model to query. Must be a subclass of ModelBase.
|
||||
:type model: models.ModelBase
|
||||
|
||||
:param session: The session to use.
|
||||
:type session: sqlalchemy.orm.session.Session
|
||||
|
||||
:param args: Arguments to query. If None - model is used.
|
||||
:type args: tuple
|
||||
|
||||
:param project_only: If present and context is user-type, then restrict
|
||||
query to match the context's project_id. If set to
|
||||
'allow_none', restriction includes project_id = None.
|
||||
:type project_only: bool
|
||||
|
||||
:param read_deleted: If present, overrides context's read_deleted field.
|
||||
:type read_deleted: bool
|
||||
|
||||
Usage:
|
||||
|
||||
..code:: python
|
||||
|
||||
result = (utils.model_query(context, models.Instance, session=session)
|
||||
.filter_by(uuid=instance_uuid)
|
||||
.all())
|
||||
|
||||
query = utils.model_query(
|
||||
context, Node,
|
||||
session=session,
|
||||
args=(func.count(Node.id), func.sum(Node.ram))
|
||||
).filter_by(project_id=project_id)
|
||||
|
||||
"""
|
||||
|
||||
if not read_deleted:
|
||||
if hasattr(context, 'read_deleted'):
|
||||
# NOTE(viktors): some projects use `read_deleted` attribute in
|
||||
# their contexts instead of `show_deleted`.
|
||||
read_deleted = context.read_deleted
|
||||
else:
|
||||
read_deleted = context.show_deleted
|
||||
|
||||
if not issubclass(model, models.ModelBase):
|
||||
raise TypeError(_("model should be a subclass of ModelBase"))
|
||||
|
||||
query = session.query(model) if not args else session.query(*args)
|
||||
query = _read_deleted_filter(query, model, read_deleted)
|
||||
query = _project_filter(query, model, context, project_only)
|
||||
|
||||
return query
|
||||
|
||||
|
||||
def get_table(engine, name):
|
||||
"""Returns an sqlalchemy table dynamically from db.
|
||||
|
||||
Needed because the models don't work for us in migrations
|
||||
as models will be far out of sync with the current data.
|
||||
"""
|
||||
metadata = MetaData()
|
||||
metadata.bind = engine
|
||||
return Table(name, metadata, autoload=True)
|
||||
|
||||
|
||||
class InsertFromSelect(UpdateBase):
|
||||
"""Form the base for `INSERT INTO table (SELECT ... )` statement."""
|
||||
def __init__(self, table, select):
|
||||
self.table = table
|
||||
self.select = select
|
||||
|
||||
|
||||
@compiles(InsertFromSelect)
|
||||
def visit_insert_from_select(element, compiler, **kw):
|
||||
"""Form the `INSERT INTO table (SELECT ... )` statement."""
|
||||
return "INSERT INTO %s %s" % (
|
||||
compiler.process(element.table, asfrom=True),
|
||||
compiler.process(element.select))
|
||||
|
||||
|
||||
class ColumnError(Exception):
|
||||
"""Error raised when no column or an invalid column is found."""
|
||||
|
||||
|
||||
def _get_not_supported_column(col_name_col_instance, column_name):
|
||||
try:
|
||||
column = col_name_col_instance[column_name]
|
||||
except KeyError:
|
||||
msg = _("Please specify column %s in col_name_col_instance "
|
||||
"param. It is required because column has unsupported "
|
||||
"type by sqlite).")
|
||||
raise ColumnError(msg % column_name)
|
||||
|
||||
if not isinstance(column, Column):
|
||||
msg = _("col_name_col_instance param has wrong type of "
|
||||
"column instance for column %s It should be instance "
|
||||
"of sqlalchemy.Column.")
|
||||
raise ColumnError(msg % column_name)
|
||||
return column
|
||||
|
||||
|
||||
def drop_unique_constraint(migrate_engine, table_name, uc_name, *columns,
|
||||
**col_name_col_instance):
|
||||
"""Drop unique constraint from table.
|
||||
|
||||
DEPRECATED: this function is deprecated and will be removed from designate.db
|
||||
in a few releases. Please use UniqueConstraint.drop() method directly for
|
||||
sqlalchemy-migrate migration scripts.
|
||||
|
||||
This method drops UC from table and works for mysql, postgresql and sqlite.
|
||||
In mysql and postgresql we are able to use "alter table" construction.
|
||||
Sqlalchemy doesn't support some sqlite column types and replaces their
|
||||
type with NullType in metadata. We process these columns and replace
|
||||
NullType with the correct column type.
|
||||
|
||||
:param migrate_engine: sqlalchemy engine
|
||||
:param table_name: name of table that contains uniq constraint.
|
||||
:param uc_name: name of uniq constraint that will be dropped.
|
||||
:param columns: columns that are in uniq constraint.
|
||||
:param col_name_col_instance: contains pair column_name=column_instance.
|
||||
column_instance is instance of Column. These params
|
||||
are required only for columns that have unsupported
|
||||
types by sqlite. For example BigInteger.
|
||||
"""
|
||||
|
||||
from migrate.changeset import UniqueConstraint
|
||||
|
||||
meta = MetaData()
|
||||
meta.bind = migrate_engine
|
||||
t = Table(table_name, meta, autoload=True)
|
||||
|
||||
if migrate_engine.name == "sqlite":
|
||||
override_cols = [
|
||||
_get_not_supported_column(col_name_col_instance, col.name)
|
||||
for col in t.columns
|
||||
if isinstance(col.type, NullType)
|
||||
]
|
||||
for col in override_cols:
|
||||
t.columns.replace(col)
|
||||
|
||||
uc = UniqueConstraint(*columns, table=t, name=uc_name)
|
||||
uc.drop()
|
||||
|
||||
|
||||
def drop_old_duplicate_entries_from_table(migrate_engine, table_name,
|
||||
use_soft_delete, *uc_column_names):
|
||||
"""Drop all old rows having the same values for columns in uc_columns.
|
||||
|
||||
This method drop (or mark ad `deleted` if use_soft_delete is True) old
|
||||
duplicate rows form table with name `table_name`.
|
||||
|
||||
:param migrate_engine: Sqlalchemy engine
|
||||
:param table_name: Table with duplicates
|
||||
:param use_soft_delete: If True - values will be marked as `deleted`,
|
||||
if False - values will be removed from table
|
||||
:param uc_column_names: Unique constraint columns
|
||||
"""
|
||||
meta = MetaData()
|
||||
meta.bind = migrate_engine
|
||||
|
||||
table = Table(table_name, meta, autoload=True)
|
||||
columns_for_group_by = [table.c[name] for name in uc_column_names]
|
||||
|
||||
columns_for_select = [func.max(table.c.id)]
|
||||
columns_for_select.extend(columns_for_group_by)
|
||||
|
||||
duplicated_rows_select = sqlalchemy.sql.select(
|
||||
columns_for_select, group_by=columns_for_group_by,
|
||||
having=func.count(table.c.id) > 1)
|
||||
|
||||
for row in migrate_engine.execute(duplicated_rows_select):
|
||||
# NOTE(boris-42): Do not remove row that has the biggest ID.
|
||||
delete_condition = table.c.id != row[0]
|
||||
is_none = None # workaround for pyflakes
|
||||
delete_condition &= table.c.deleted_at == is_none
|
||||
for name in uc_column_names:
|
||||
delete_condition &= table.c[name] == row[name]
|
||||
|
||||
rows_to_delete_select = sqlalchemy.sql.select(
|
||||
[table.c.id]).where(delete_condition)
|
||||
for row in migrate_engine.execute(rows_to_delete_select).fetchall():
|
||||
LOG.info(_LI("Deleting duplicated row with id: %(id)s from table: "
|
||||
"%(table)s") % dict(id=row[0], table=table_name))
|
||||
|
||||
if use_soft_delete:
|
||||
delete_statement = table.update().\
|
||||
where(delete_condition).\
|
||||
values({
|
||||
'deleted': literal_column('id'),
|
||||
'updated_at': literal_column('updated_at'),
|
||||
'deleted_at': timeutils.utcnow()
|
||||
})
|
||||
else:
|
||||
delete_statement = table.delete().where(delete_condition)
|
||||
migrate_engine.execute(delete_statement)
|
||||
|
||||
|
||||
def _get_default_deleted_value(table):
|
||||
if isinstance(table.c.id.type, Integer):
|
||||
return 0
|
||||
if isinstance(table.c.id.type, String):
|
||||
return ""
|
||||
raise ColumnError(_("Unsupported id columns type"))
|
||||
|
||||
|
||||
def _restore_indexes_on_deleted_columns(migrate_engine, table_name, indexes):
|
||||
table = get_table(migrate_engine, table_name)
|
||||
|
||||
insp = reflection.Inspector.from_engine(migrate_engine)
|
||||
real_indexes = insp.get_indexes(table_name)
|
||||
existing_index_names = dict(
|
||||
[(index['name'], index['column_names']) for index in real_indexes])
|
||||
|
||||
# NOTE(boris-42): Restore indexes on `deleted` column
|
||||
for index in indexes:
|
||||
if 'deleted' not in index['column_names']:
|
||||
continue
|
||||
name = index['name']
|
||||
if name in existing_index_names:
|
||||
column_names = [table.c[c] for c in existing_index_names[name]]
|
||||
old_index = Index(name, *column_names, unique=index["unique"])
|
||||
old_index.drop(migrate_engine)
|
||||
|
||||
column_names = [table.c[c] for c in index['column_names']]
|
||||
new_index = Index(index["name"], *column_names, unique=index["unique"])
|
||||
new_index.create(migrate_engine)
|
||||
|
||||
|
||||
def change_deleted_column_type_to_boolean(migrate_engine, table_name,
|
||||
**col_name_col_instance):
|
||||
if migrate_engine.name == "sqlite":
|
||||
return _change_deleted_column_type_to_boolean_sqlite(
|
||||
migrate_engine, table_name, **col_name_col_instance)
|
||||
insp = reflection.Inspector.from_engine(migrate_engine)
|
||||
indexes = insp.get_indexes(table_name)
|
||||
|
||||
table = get_table(migrate_engine, table_name)
|
||||
|
||||
old_deleted = Column('old_deleted', Boolean, default=False)
|
||||
old_deleted.create(table, populate_default=False)
|
||||
|
||||
table.update().\
|
||||
where(table.c.deleted == table.c.id).\
|
||||
values(old_deleted=True).\
|
||||
execute()
|
||||
|
||||
table.c.deleted.drop()
|
||||
table.c.old_deleted.alter(name="deleted")
|
||||
|
||||
_restore_indexes_on_deleted_columns(migrate_engine, table_name, indexes)
|
||||
|
||||
|
||||
def _change_deleted_column_type_to_boolean_sqlite(migrate_engine, table_name,
|
||||
**col_name_col_instance):
|
||||
insp = reflection.Inspector.from_engine(migrate_engine)
|
||||
table = get_table(migrate_engine, table_name)
|
||||
|
||||
columns = []
|
||||
for column in table.columns:
|
||||
column_copy = None
|
||||
if column.name != "deleted":
|
||||
if isinstance(column.type, NullType):
|
||||
column_copy = _get_not_supported_column(col_name_col_instance,
|
||||
column.name)
|
||||
else:
|
||||
column_copy = column.copy()
|
||||
else:
|
||||
column_copy = Column('deleted', Boolean, default=0)
|
||||
columns.append(column_copy)
|
||||
|
||||
constraints = [constraint.copy() for constraint in table.constraints]
|
||||
|
||||
meta = table.metadata
|
||||
new_table = Table(table_name + "__tmp__", meta,
|
||||
*(columns + constraints))
|
||||
new_table.create()
|
||||
|
||||
indexes = []
|
||||
for index in insp.get_indexes(table_name):
|
||||
column_names = [new_table.c[c] for c in index['column_names']]
|
||||
indexes.append(Index(index["name"], *column_names,
|
||||
unique=index["unique"]))
|
||||
|
||||
c_select = []
|
||||
for c in table.c:
|
||||
if c.name != "deleted":
|
||||
c_select.append(c)
|
||||
else:
|
||||
c_select.append(table.c.deleted == table.c.id)
|
||||
|
||||
ins = InsertFromSelect(new_table, sqlalchemy.sql.select(c_select))
|
||||
migrate_engine.execute(ins)
|
||||
|
||||
table.drop()
|
||||
[index.create(migrate_engine) for index in indexes]
|
||||
|
||||
new_table.rename(table_name)
|
||||
new_table.update().\
|
||||
where(new_table.c.deleted == new_table.c.id).\
|
||||
values(deleted=True).\
|
||||
execute()
|
||||
|
||||
|
||||
def change_deleted_column_type_to_id_type(migrate_engine, table_name,
|
||||
**col_name_col_instance):
|
||||
if migrate_engine.name == "sqlite":
|
||||
return _change_deleted_column_type_to_id_type_sqlite(
|
||||
migrate_engine, table_name, **col_name_col_instance)
|
||||
insp = reflection.Inspector.from_engine(migrate_engine)
|
||||
indexes = insp.get_indexes(table_name)
|
||||
|
||||
table = get_table(migrate_engine, table_name)
|
||||
|
||||
new_deleted = Column('new_deleted', table.c.id.type,
|
||||
default=_get_default_deleted_value(table))
|
||||
new_deleted.create(table, populate_default=True)
|
||||
|
||||
deleted = True # workaround for pyflakes
|
||||
table.update().\
|
||||
where(table.c.deleted == deleted).\
|
||||
values(new_deleted=table.c.id).\
|
||||
execute()
|
||||
table.c.deleted.drop()
|
||||
table.c.new_deleted.alter(name="deleted")
|
||||
|
||||
_restore_indexes_on_deleted_columns(migrate_engine, table_name, indexes)
|
||||
|
||||
|
||||
def _change_deleted_column_type_to_id_type_sqlite(migrate_engine, table_name,
|
||||
**col_name_col_instance):
|
||||
# NOTE(boris-42): sqlaclhemy-migrate can't drop column with check
|
||||
# constraints in sqlite DB and our `deleted` column has
|
||||
# 2 check constraints. So there is only one way to remove
|
||||
# these constraints:
|
||||
# 1) Create new table with the same columns, constraints
|
||||
# and indexes. (except deleted column).
|
||||
# 2) Copy all data from old to new table.
|
||||
# 3) Drop old table.
|
||||
# 4) Rename new table to old table name.
|
||||
insp = reflection.Inspector.from_engine(migrate_engine)
|
||||
meta = MetaData(bind=migrate_engine)
|
||||
table = Table(table_name, meta, autoload=True)
|
||||
default_deleted_value = _get_default_deleted_value(table)
|
||||
|
||||
columns = []
|
||||
for column in table.columns:
|
||||
column_copy = None
|
||||
if column.name != "deleted":
|
||||
if isinstance(column.type, NullType):
|
||||
column_copy = _get_not_supported_column(col_name_col_instance,
|
||||
column.name)
|
||||
else:
|
||||
column_copy = column.copy()
|
||||
else:
|
||||
column_copy = Column('deleted', table.c.id.type,
|
||||
default=default_deleted_value)
|
||||
columns.append(column_copy)
|
||||
|
||||
def is_deleted_column_constraint(constraint):
|
||||
# NOTE(boris-42): There is no other way to check is CheckConstraint
|
||||
# associated with deleted column.
|
||||
if not isinstance(constraint, CheckConstraint):
|
||||
return False
|
||||
sqltext = str(constraint.sqltext)
|
||||
return (sqltext.endswith("deleted in (0, 1)") or
|
||||
sqltext.endswith("deleted IN (:deleted_1, :deleted_2)"))
|
||||
|
||||
constraints = []
|
||||
for constraint in table.constraints:
|
||||
if not is_deleted_column_constraint(constraint):
|
||||
constraints.append(constraint.copy())
|
||||
|
||||
new_table = Table(table_name + "__tmp__", meta,
|
||||
*(columns + constraints))
|
||||
new_table.create()
|
||||
|
||||
indexes = []
|
||||
for index in insp.get_indexes(table_name):
|
||||
column_names = [new_table.c[c] for c in index['column_names']]
|
||||
indexes.append(Index(index["name"], *column_names,
|
||||
unique=index["unique"]))
|
||||
|
||||
ins = InsertFromSelect(new_table, table.select())
|
||||
migrate_engine.execute(ins)
|
||||
|
||||
table.drop()
|
||||
[index.create(migrate_engine) for index in indexes]
|
||||
|
||||
new_table.rename(table_name)
|
||||
deleted = True # workaround for pyflakes
|
||||
new_table.update().\
|
||||
where(new_table.c.deleted == deleted).\
|
||||
values(deleted=new_table.c.id).\
|
||||
execute()
|
||||
|
||||
# NOTE(boris-42): Fix value of deleted column: False -> "" or 0.
|
||||
deleted = False # workaround for pyflakes
|
||||
new_table.update().\
|
||||
where(new_table.c.deleted == deleted).\
|
||||
values(deleted=default_deleted_value).\
|
||||
execute()
|
||||
|
||||
|
||||
def get_connect_string(backend, database, user=None, passwd=None):
|
||||
"""Get database connection
|
||||
|
||||
Try to get a connection with a very specific set of values, if we get
|
||||
these then we'll run the tests, otherwise they are skipped
|
||||
"""
|
||||
args = {'backend': backend,
|
||||
'user': user,
|
||||
'passwd': passwd,
|
||||
'database': database}
|
||||
if backend == 'sqlite':
|
||||
template = '%(backend)s:///%(database)s'
|
||||
else:
|
||||
template = "%(backend)s://%(user)s:%(passwd)s@localhost/%(database)s"
|
||||
return template % args
|
||||
|
||||
|
||||
def is_backend_avail(backend, database, user=None, passwd=None):
|
||||
try:
|
||||
connect_uri = get_connect_string(backend=backend,
|
||||
database=database,
|
||||
user=user,
|
||||
passwd=passwd)
|
||||
engine = sqlalchemy.create_engine(connect_uri)
|
||||
connection = engine.connect()
|
||||
except Exception:
|
||||
# intentionally catch all to handle exceptions even if we don't
|
||||
# have any backend code loaded.
|
||||
return False
|
||||
else:
|
||||
connection.close()
|
||||
engine.dispose()
|
||||
return True
|
||||
|
||||
|
||||
def get_db_connection_info(conn_pieces):
|
||||
database = conn_pieces.path.strip('/')
|
||||
loc_pieces = conn_pieces.netloc.split('@')
|
||||
host = loc_pieces[1]
|
||||
|
||||
auth_pieces = loc_pieces[0].split(':')
|
||||
user = auth_pieces[0]
|
||||
password = ""
|
||||
if len(auth_pieces) > 1:
|
||||
password = auth_pieces[1].strip()
|
||||
|
||||
return (user, password, database, host)
|
||||
@ -13,87 +13,40 @@
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
from oslo.db.sqlalchemy import models
|
||||
from oslo.db import exception as oslo_db_exc
|
||||
from sqlalchemy import Column, DateTime
|
||||
from sqlalchemy.exc import IntegrityError
|
||||
from sqlalchemy.orm import object_mapper
|
||||
from sqlalchemy.types import CHAR
|
||||
|
||||
from designate.openstack.common import timeutils
|
||||
from designate import exceptions
|
||||
|
||||
|
||||
class Base(object):
|
||||
__abstract__ = True
|
||||
__table_initialized__ = False
|
||||
|
||||
class Base(models.ModelBase):
|
||||
# TODO(ekarlso): Remove me when o.db patch lands for this.
|
||||
def save(self, session):
|
||||
""" Save this object """
|
||||
session.add(self)
|
||||
|
||||
try:
|
||||
session.flush()
|
||||
except IntegrityError as e:
|
||||
non_unique_strings = (
|
||||
'duplicate entry',
|
||||
'not unique',
|
||||
'unique constraint failed'
|
||||
)
|
||||
|
||||
for non_unique_string in non_unique_strings:
|
||||
if non_unique_string in str(e).lower():
|
||||
raise exceptions.Duplicate(str(e))
|
||||
|
||||
# Not a Duplicate error.. Re-raise.
|
||||
except oslo_db_exc.DBDuplicateEntry as e:
|
||||
raise exceptions.Duplicate(str(e))
|
||||
except IntegrityError:
|
||||
raise
|
||||
|
||||
def delete(self, session):
|
||||
""" Delete this object """
|
||||
session.delete(self)
|
||||
session.flush()
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
setattr(self, key, value)
|
||||
|
||||
def __getitem__(self, key):
|
||||
return getattr(self, key)
|
||||
|
||||
def __iter__(self):
|
||||
columns = dict(object_mapper(self).columns).keys()
|
||||
# NOTE(russellb): Allow models to specify other keys that can be looked
|
||||
# up, beyond the actual db columns. An example would be the 'name'
|
||||
# property for an Instance.
|
||||
if hasattr(self, '_extra_keys'):
|
||||
columns.extend(self._extra_keys())
|
||||
self._i = iter(columns)
|
||||
return self
|
||||
|
||||
def next(self):
|
||||
n = self._i.next()
|
||||
return n, getattr(self, n)
|
||||
|
||||
def update(self, values):
|
||||
""" Make the model object behave like a dict """
|
||||
for k, v in values.iteritems():
|
||||
setattr(self, k, v)
|
||||
|
||||
def iteritems(self):
|
||||
"""
|
||||
Make the model object behave like a dict.
|
||||
|
||||
Includes attributes from joins.
|
||||
"""
|
||||
local = dict(self)
|
||||
joined = dict([(k, v) for k, v in self.__dict__.iteritems()
|
||||
if not k[0] == '_'])
|
||||
local.update(joined)
|
||||
return local.iteritems()
|
||||
|
||||
|
||||
# TODO(ekarlso): Get this into o.db?
|
||||
class SoftDeleteMixin(object):
|
||||
deleted = Column(CHAR(32), nullable=False, default="0", server_default="0")
|
||||
deleted_at = Column(DateTime, nullable=True, default=None)
|
||||
|
||||
def soft_delete(self, session=None):
|
||||
def soft_delete(self, session):
|
||||
""" Mark this object as deleted. """
|
||||
self.deleted = self.id.replace('-', '')
|
||||
self.deleted_at = timeutils.utcnow()
|
||||
|
||||
@ -16,229 +16,34 @@
|
||||
|
||||
"""Session Handling for SQLAlchemy backend."""
|
||||
|
||||
import re
|
||||
import time
|
||||
|
||||
import sqlalchemy
|
||||
from sqlalchemy.exc import DisconnectionError, OperationalError
|
||||
import sqlalchemy.orm
|
||||
from sqlalchemy.pool import NullPool, StaticPool
|
||||
from oslo.config import cfg
|
||||
from oslo.db.sqlalchemy import session
|
||||
|
||||
from designate.openstack.common import log as logging
|
||||
from designate.openstack.common.gettextutils import _LW
|
||||
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
_MAKERS = {}
|
||||
_ENGINES = {}
|
||||
CONF = cfg.CONF
|
||||
|
||||
|
||||
SQLOPTS = [
|
||||
cfg.StrOpt('database_connection',
|
||||
default='sqlite:///$state_path/designate.sqlite',
|
||||
secret=True,
|
||||
help='The database driver to use'),
|
||||
cfg.IntOpt('connection_debug', default=0,
|
||||
help='Verbosity of SQL debugging information. 0=None,'
|
||||
' 100=Everything'),
|
||||
cfg.BoolOpt('connection_trace', default=False,
|
||||
help='Add python stack traces to SQL as comment strings'),
|
||||
cfg.BoolOpt('sqlite_synchronous', default=True,
|
||||
help='If passed, use synchronous mode for sqlite'),
|
||||
cfg.IntOpt('idle_timeout', default=3600,
|
||||
help='timeout before idle sql connections are reaped'),
|
||||
cfg.IntOpt('max_retries', default=10,
|
||||
help='maximum db connection retries during startup. '
|
||||
'(setting -1 implies an infinite retry count)'),
|
||||
cfg.IntOpt('retry_interval', default=10,
|
||||
help='interval between retries of opening a sql connection')
|
||||
]
|
||||
_FACADES = {}
|
||||
|
||||
|
||||
def get_session(config_group,
|
||||
autocommit=True,
|
||||
expire_on_commit=False,
|
||||
autoflush=True):
|
||||
"""Return a SQLAlchemy session."""
|
||||
global _MAKERS
|
||||
def _create_facade_lazily(name):
|
||||
if name not in _FACADES:
|
||||
_FACADES[name] = session.EngineFacade(
|
||||
cfg.CONF[name].connection,
|
||||
**dict(cfg.CONF[name].iteritems()))
|
||||
|
||||
if config_group not in _MAKERS:
|
||||
engine = get_engine(config_group)
|
||||
_MAKERS[config_group] = get_maker(engine,
|
||||
autocommit,
|
||||
expire_on_commit,
|
||||
autoflush)
|
||||
|
||||
session = _MAKERS[config_group]()
|
||||
return session
|
||||
return _FACADES[name]
|
||||
|
||||
|
||||
def synchronous_switch_listener(dbapi_conn, connection_rec):
|
||||
"""Switch sqlite connections to non-synchronous mode"""
|
||||
dbapi_conn.execute("PRAGMA synchronous = OFF")
|
||||
def get_engine(name):
|
||||
facade = _create_facade_lazily(name)
|
||||
return facade.get_engine()
|
||||
|
||||
|
||||
def add_regexp_listener(dbapi_con, con_record):
|
||||
"""Add REGEXP function to sqlite connections."""
|
||||
|
||||
def regexp(expr, item):
|
||||
reg = re.compile(expr)
|
||||
return reg.search(unicode(item)) is not None
|
||||
dbapi_con.create_function('regexp', 2, regexp)
|
||||
|
||||
|
||||
def ping_listener(dbapi_conn, connection_rec, connection_proxy):
|
||||
"""
|
||||
Ensures that MySQL connections checked out of the
|
||||
pool are alive.
|
||||
|
||||
Borrowed from:
|
||||
http://groups.google.com/group/sqlalchemy/msg/a4ce563d802c929f
|
||||
"""
|
||||
try:
|
||||
dbapi_conn.cursor().execute('select 1')
|
||||
except dbapi_conn.OperationalError as ex:
|
||||
if ex.args[0] in (2006, 2013, 2014, 2045, 2055):
|
||||
LOG.warn(_LW('Got mysql server has gone away: %s'), ex)
|
||||
raise DisconnectionError("Database server went away")
|
||||
else:
|
||||
raise
|
||||
|
||||
|
||||
def is_db_connection_error(args):
|
||||
"""Return True if error in connecting to db."""
|
||||
# NOTE(adam_g): This is currently MySQL specific and needs to be extended
|
||||
# to support Postgres and others.
|
||||
conn_err_codes = ('2002', '2003', '2006')
|
||||
for err_code in conn_err_codes:
|
||||
if args.find(err_code) != -1:
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
def get_engine(config_group):
|
||||
"""Return a SQLAlchemy engine."""
|
||||
global _ENGINES
|
||||
|
||||
database_connection = cfg.CONF[config_group].database_connection
|
||||
|
||||
if config_group not in _ENGINES:
|
||||
connection_dict = sqlalchemy.engine.url.make_url(
|
||||
database_connection)
|
||||
|
||||
engine_args = {
|
||||
"pool_recycle": cfg.CONF[config_group].idle_timeout,
|
||||
"echo": False,
|
||||
'convert_unicode': True,
|
||||
}
|
||||
|
||||
# Map our SQL debug level to SQLAlchemy's options
|
||||
if cfg.CONF[config_group].connection_debug >= 100:
|
||||
engine_args['echo'] = 'debug'
|
||||
elif cfg.CONF[config_group].connection_debug >= 50:
|
||||
engine_args['echo'] = True
|
||||
|
||||
if "sqlite" in connection_dict.drivername:
|
||||
engine_args["poolclass"] = NullPool
|
||||
|
||||
if database_connection == "sqlite://":
|
||||
engine_args["poolclass"] = StaticPool
|
||||
engine_args["connect_args"] = {'check_same_thread': False}
|
||||
|
||||
_ENGINES[config_group] = sqlalchemy.create_engine(database_connection,
|
||||
**engine_args)
|
||||
|
||||
if 'mysql' in connection_dict.drivername:
|
||||
sqlalchemy.event.listen(_ENGINES[config_group],
|
||||
'checkout',
|
||||
ping_listener)
|
||||
elif "sqlite" in connection_dict.drivername:
|
||||
if not cfg.CONF[config_group].sqlite_synchronous:
|
||||
sqlalchemy.event.listen(_ENGINES[config_group],
|
||||
'connect',
|
||||
synchronous_switch_listener)
|
||||
sqlalchemy.event.listen(_ENGINES[config_group],
|
||||
'connect',
|
||||
add_regexp_listener)
|
||||
|
||||
if (cfg.CONF[config_group].connection_trace and
|
||||
_ENGINES[config_group].dialect.dbapi.__name__ == 'MySQLdb'):
|
||||
import MySQLdb.cursors
|
||||
_do_query = debug_mysql_do_query()
|
||||
setattr(MySQLdb.cursors.BaseCursor, '_do_query', _do_query)
|
||||
|
||||
try:
|
||||
_ENGINES[config_group].connect()
|
||||
except OperationalError as e:
|
||||
if not is_db_connection_error(e.args[0]):
|
||||
raise
|
||||
|
||||
remaining = cfg.CONF[config_group].max_retries
|
||||
if remaining == -1:
|
||||
remaining = 'infinite'
|
||||
while True:
|
||||
LOG.warn(_LW('SQL connection failed. %s attempts left.') %
|
||||
remaining)
|
||||
if remaining != 'infinite':
|
||||
remaining -= 1
|
||||
time.sleep(cfg.CONF[config_group].retry_interval)
|
||||
try:
|
||||
_ENGINES[config_group].connect()
|
||||
break
|
||||
except OperationalError as e:
|
||||
if (remaining != 'infinite' and remaining == 0) or \
|
||||
not is_db_connection_error(e.args[0]):
|
||||
raise
|
||||
return _ENGINES[config_group]
|
||||
|
||||
|
||||
def get_maker(engine, autocommit=True, expire_on_commit=False, autoflush=True):
|
||||
"""Return a SQLAlchemy sessionmaker using the given engine."""
|
||||
return sqlalchemy.orm.sessionmaker(bind=engine,
|
||||
autocommit=autocommit,
|
||||
autoflush=autoflush,
|
||||
expire_on_commit=expire_on_commit)
|
||||
|
||||
|
||||
def debug_mysql_do_query():
|
||||
"""Return a debug version of MySQLdb.cursors._do_query"""
|
||||
import traceback
|
||||
|
||||
import MySQLdb.cursors
|
||||
|
||||
old_mysql_do_query = MySQLdb.cursors.BaseCursor._do_query
|
||||
|
||||
def _do_query(self, q):
|
||||
stack = ''
|
||||
for file, line, method, function in traceback.extract_stack():
|
||||
# exclude various common things from trace
|
||||
if file.endswith('session.py') and method == '_do_query':
|
||||
continue
|
||||
if file.endswith('api.py') and method == 'wrapper':
|
||||
continue
|
||||
if file.endswith('utils.py') and method == '_inner':
|
||||
continue
|
||||
if file.endswith('exception.py') and method == '_wrap':
|
||||
continue
|
||||
# nova/db/api is just a wrapper around nova/db/sqlalchemy/api
|
||||
if file.endswith('nova/db/api.py'):
|
||||
continue
|
||||
# only trace inside nova
|
||||
index = file.rfind('nova')
|
||||
if index == -1:
|
||||
continue
|
||||
stack += "File:%s:%s Method:%s() Line:%s | " \
|
||||
% (file[index:], line, method, function)
|
||||
|
||||
# strip trailing " | " from stack
|
||||
if stack:
|
||||
stack = stack[:-3]
|
||||
qq = "%s /* %s */" % (q, stack)
|
||||
else:
|
||||
qq = q
|
||||
old_mysql_do_query(self, qq)
|
||||
|
||||
# return the new _do_query method
|
||||
return _do_query
|
||||
def get_session(name, **kwargs):
|
||||
facade = _create_facade_lazily(name)
|
||||
return facade.get_session(**kwargs)
|
||||
|
||||
@ -15,22 +15,20 @@
|
||||
# under the License.
|
||||
import time
|
||||
|
||||
from oslo.config import cfg
|
||||
from oslo.db.sqlalchemy import utils as oslo_utils
|
||||
from oslo.db import options
|
||||
from sqlalchemy.orm import exc
|
||||
from sqlalchemy import exc as sqlalchemy_exc
|
||||
from sqlalchemy import distinct, func
|
||||
from oslo.config import cfg
|
||||
|
||||
from designate.openstack.common import log as logging
|
||||
from designate.openstack.common.db.sqlalchemy.utils import paginate_query
|
||||
from designate.openstack.common.db.sqlalchemy.utils import InvalidSortKey
|
||||
from designate import exceptions
|
||||
from designate import objects
|
||||
from designate.sqlalchemy import session
|
||||
from designate.storage import base
|
||||
from designate.storage.impl_sqlalchemy import models
|
||||
from designate.sqlalchemy.models import SoftDeleteMixin
|
||||
from designate.sqlalchemy.session import get_session
|
||||
from designate.sqlalchemy.session import get_engine
|
||||
from designate.sqlalchemy.session import SQLOPTS
|
||||
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
@ -39,7 +37,7 @@ cfg.CONF.register_group(cfg.OptGroup(
|
||||
name='storage:sqlalchemy', title="Configuration for SQLAlchemy Storage"
|
||||
))
|
||||
|
||||
cfg.CONF.register_opts(SQLOPTS, group='storage:sqlalchemy')
|
||||
cfg.CONF.register_opts(options.database_opts, group='storage:sqlalchemy')
|
||||
|
||||
|
||||
class SQLAlchemyStorage(base.Storage):
|
||||
@ -49,8 +47,8 @@ class SQLAlchemyStorage(base.Storage):
|
||||
def __init__(self):
|
||||
super(SQLAlchemyStorage, self).__init__()
|
||||
|
||||
self.engine = get_engine(self.name)
|
||||
self.session = get_session(self.name)
|
||||
self.engine = session.get_engine(self.name)
|
||||
self.session = session.get_session(self.name)
|
||||
|
||||
def begin(self):
|
||||
self.session.begin(subtransactions=True)
|
||||
@ -136,13 +134,13 @@ class SQLAlchemyStorage(base.Storage):
|
||||
sort_dir = sort_dir or 'asc'
|
||||
|
||||
try:
|
||||
query = paginate_query(
|
||||
query = oslo_utils.paginate_query(
|
||||
query, model, limit,
|
||||
[sort_key, 'id', 'created_at'], marker=marker,
|
||||
sort_dir=sort_dir)
|
||||
|
||||
return query.all()
|
||||
except InvalidSortKey as sort_key_error:
|
||||
except oslo_utils.InvalidSortKey as sort_key_error:
|
||||
raise exceptions.InvalidSortKey(sort_key_error.message)
|
||||
# Any ValueErrors are propagated back to the user as is.
|
||||
# Limits, sort_dir and sort_key are checked at the API layer.
|
||||
|
||||
@ -18,7 +18,8 @@
|
||||
import hashlib
|
||||
|
||||
from oslo.config import cfg
|
||||
from sqlalchemy import (Column, DateTime, String, Text, Integer, ForeignKey,
|
||||
from oslo.db.sqlalchemy import models as oslo_models
|
||||
from sqlalchemy import (Column, String, Text, Integer, ForeignKey,
|
||||
Enum, Boolean, Unicode, UniqueConstraint, event)
|
||||
from sqlalchemy.orm import relationship, backref
|
||||
from sqlalchemy.ext.declarative import declarative_base
|
||||
@ -26,8 +27,7 @@ from sqlalchemy.ext.declarative import declarative_base
|
||||
from designate.openstack.common import log as logging
|
||||
from designate.openstack.common import timeutils
|
||||
from designate.sqlalchemy.types import UUID
|
||||
from designate.sqlalchemy.models import Base as CommonBase
|
||||
from designate.sqlalchemy.models import SoftDeleteMixin
|
||||
from designate.sqlalchemy import models
|
||||
from designate import utils
|
||||
|
||||
|
||||
@ -41,11 +41,9 @@ TSIG_ALGORITHMS = ['hmac-md5', 'hmac-sha1', 'hmac-sha224', 'hmac-sha256',
|
||||
'hmac-sha384', 'hmac-sha512']
|
||||
|
||||
|
||||
class Base(CommonBase):
|
||||
class Base(models.Base, oslo_models.TimestampMixin):
|
||||
id = Column(UUID, default=utils.generate_uuid, primary_key=True)
|
||||
version = Column(Integer, default=1, nullable=False)
|
||||
created_at = Column(DateTime, default=timeutils.utcnow)
|
||||
updated_at = Column(DateTime, onupdate=timeutils.utcnow)
|
||||
|
||||
__mapper_args__ = {
|
||||
'version_id_col': version
|
||||
@ -82,7 +80,7 @@ class Tld(Base):
|
||||
description = Column(Unicode(160), nullable=True)
|
||||
|
||||
|
||||
class Domain(SoftDeleteMixin, Base):
|
||||
class Domain(models.SoftDeleteMixin, Base):
|
||||
__tablename__ = 'domains'
|
||||
__table_args__ = (
|
||||
UniqueConstraint('name', 'deleted', name='unique_domain_name'),
|
||||
|
||||
@ -55,7 +55,7 @@ cfg.CONF.import_opt('backend_driver', 'designate.agent',
|
||||
group='service:agent')
|
||||
cfg.CONF.import_opt('auth_strategy', 'designate.api',
|
||||
group='service:api')
|
||||
cfg.CONF.import_opt('database_connection', 'designate.storage.impl_sqlalchemy',
|
||||
cfg.CONF.import_opt('connection', 'designate.storage.impl_sqlalchemy',
|
||||
group='storage:sqlalchemy')
|
||||
|
||||
|
||||
@ -274,7 +274,7 @@ class TestCase(base.BaseTestCase):
|
||||
self.db_fixture = self.useFixture(
|
||||
DatabaseFixture.get_fixture(REPOSITORY))
|
||||
self.config(
|
||||
database_connection=self.db_fixture.url,
|
||||
connection=self.db_fixture.url,
|
||||
group='storage:sqlalchemy'
|
||||
)
|
||||
|
||||
|
||||
@ -69,7 +69,7 @@ class PowerDNSBackendTestCase(tests.TestCase, BackendTestMixin):
|
||||
self.db_fixture = DatabaseFixture.get_fixture(REPOSITORY)
|
||||
self.useFixture(self.db_fixture)
|
||||
self.config(backend_driver='powerdns', group='service:agent')
|
||||
self.config(database_connection=self.db_fixture.url,
|
||||
self.config(connection=self.db_fixture.url,
|
||||
group='backend:powerdns')
|
||||
self.backend = self.get_backend_driver()
|
||||
self.backend.start()
|
||||
|
||||
@ -26,7 +26,7 @@ Parameter Default Note
|
||||
=============================== ====================================== ==============================================================
|
||||
domain_type NATIVE PowerDNS Domain Type
|
||||
also_notify [] List of additional IPs to send NOTIFYs to.
|
||||
database_connection sqlite:///$pystatepath/powerdns.sqlite Database connection string
|
||||
connection sqlite:///$pystatepath/powerdns.sqlite Database connection string
|
||||
connection_debug 0 Verbosity of SQL debugging information. 0=None, 100=Everything
|
||||
connection_trace False Add python stack traces to SQL as comment strings
|
||||
idle_timeout 3600 timeout before idle sql connections are reaped
|
||||
@ -60,10 +60,10 @@ You need to configure PowerDNS to use the MySQL backend.
|
||||
.. note::
|
||||
PowerDNS can connect via socket or host/port.
|
||||
|
||||
3. Configure the options for designate-central - specifaclly "database_connection" to point to your MySQL database::
|
||||
3. Configure the options for designate-central - specifaclly "connection" to point to your MySQL database::
|
||||
|
||||
[backend:powerdns]
|
||||
database_connection = mysql://<username>:<password>@<host>:<port>/<dbname>
|
||||
connection = mysql://<username>:<password>@<host>:<port>/<dbname>
|
||||
|
||||
4. Setup the database schema.
|
||||
|
||||
|
||||
@ -40,7 +40,7 @@ os-password admin Password
|
||||
os-tenant-id Tenant ID to use for openstack service access
|
||||
os-tenant-name admin Tenant name to use for openstack service access
|
||||
os-auth-url http://localhost:5000/v2.0 Auth URL to use for openstack service access
|
||||
database_connection sqlite:///$pystatepath/designate.db Database connection string
|
||||
connection sqlite:///$pystatepath/designate.db Database connection string
|
||||
=============================== ==================================== ==============================================================
|
||||
|
||||
Storage - SQL Alchemy
|
||||
|
||||
@ -63,7 +63,7 @@ enabled_extensions_v1 = diagnostics, quotas, reports, sync
|
||||
[storage:sqlalchemy]
|
||||
# Database connection string - to configure options for a given implementation
|
||||
# like sqlalchemy or other see below
|
||||
database_connection = sqlite:///$state_path/designate.sqlite
|
||||
connection = sqlite:///$state_path/designate.sqlite
|
||||
connection_debug = 100
|
||||
connection_trace = True
|
||||
sqlite_synchronous = True
|
||||
@ -78,7 +78,7 @@ retry_interval = 10
|
||||
# PowerDNS Backend
|
||||
#-----------------------
|
||||
[backend:powerdns]
|
||||
database_connection = sqlite:///$state_path/pdns.sqlite
|
||||
connection = sqlite:///$state_path/pdns.sqlite
|
||||
connection_debug = 100
|
||||
connection_trace = True
|
||||
sqlite_synchronous = True
|
||||
|
||||
@ -74,7 +74,7 @@ admin_password = designate
|
||||
[storage:sqlalchemy]
|
||||
# Database connection string - to configure options for a given implementation
|
||||
# like sqlalchemy or other see below
|
||||
database_connection = mysql://designate:designate@localhost/designate
|
||||
connection = mysql://designate:designate@localhost/designate
|
||||
#connection_debug = 100
|
||||
#connection_trace = True
|
||||
#sqlite_synchronous = True
|
||||
@ -89,7 +89,7 @@ retry_interval = 10
|
||||
# PowerDNS Backend
|
||||
#-----------------------
|
||||
[backend:powerdns]
|
||||
database_connection = mysql://powerdns:powerdns@localhost/powerdns
|
||||
connection = mysql://powerdns:powerdns@localhost/powerdns
|
||||
#connection_debug = 100
|
||||
#connection_trace = True
|
||||
#sqlite_synchronous = True
|
||||
|
||||
@ -133,11 +133,9 @@ Initialize & Start the Central Service
|
||||
|
||||
::
|
||||
|
||||
#Initialize and sync the Designate database:
|
||||
$ designate-manage database init
|
||||
#Sync the Designate database:
|
||||
$ designate-manage database sync
|
||||
#Initialize and sync the PowerDNS database:
|
||||
$ designate-manage powerdns init
|
||||
#Sync the PowerDNS database:
|
||||
$ designate-manage powerdns sync
|
||||
#Restart PowerDNS
|
||||
$ service pdns restart
|
||||
|
||||
@ -186,11 +186,9 @@ Sync Database schemas
|
||||
|
||||
Initialize and sync the database schemas for Designate and PowerDNS::
|
||||
|
||||
$ designate-manage database-init
|
||||
$ designate-manage database-sync
|
||||
$ designate-manage database sync
|
||||
|
||||
$ designate-manage powerdns database-init
|
||||
$ designate-manage powerdns database-sync
|
||||
$ designate-manage powerdns database sync
|
||||
|
||||
Register Designate with Keystone
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
@ -149,7 +149,7 @@ debug = False
|
||||
[storage:sqlalchemy]
|
||||
# Database connection string - to configure options for a given implementation
|
||||
# like sqlalchemy or other see below
|
||||
#database_connection = sqlite:///$state_path/designate.sqlite
|
||||
#connection = sqlite:///$state_path/designate.sqlite
|
||||
#connection_debug = 100
|
||||
#connection_trace = False
|
||||
#sqlite_synchronous = True
|
||||
@ -195,7 +195,7 @@ debug = False
|
||||
# Bind9+MySQL Backend
|
||||
#-----------------------
|
||||
[backend:mysqlbind9]
|
||||
#database_connection = mysql://user:password@host/schema
|
||||
#connection = mysql://user:password@host/schema
|
||||
#rndc_host = 127.0.0.1
|
||||
#rndc_port = 953
|
||||
#rndc_config_file = /etc/rndc.conf
|
||||
@ -207,7 +207,7 @@ debug = False
|
||||
# PowerDNS Backend
|
||||
#-----------------------
|
||||
[backend:powerdns]
|
||||
#database_connection = mysql://user:password@host/pdns
|
||||
#connection = mysql://user:password@host/pdns
|
||||
#connection_debug = 100
|
||||
#connection_trace = False
|
||||
#sqlite_synchronous = True
|
||||
|
||||
@ -2,8 +2,6 @@
|
||||
|
||||
# The list of modules to copy from oslo-incubator.git
|
||||
module=context
|
||||
module=db
|
||||
module=db.sqlalchemy
|
||||
module=excutils
|
||||
module=fixture
|
||||
module=gettextutils
|
||||
|
||||
@ -25,3 +25,4 @@ WebOb>=1.2.3
|
||||
dnspython>=1.9.4
|
||||
posix_ipc
|
||||
oslotest
|
||||
oslo.db>=0.2.0 # Apache-2.0
|
||||
|
||||
Loading…
Reference in New Issue
Block a user