def __init__(self):
super(RevisionPlugin, self).__init__()
# background on these event hooks:
# https://docs.sqlalchemy.org/en/latest/orm/session_events.html
db_api.sqla_listen(se.Session, 'before_flush', self.bump_revisions)
db_api.sqla_listen(se.Session, "after_flush_postexec",
self._emit_related_revision_bumps)
db_api.sqla_listen(se.Session, 'after_commit',
self._clear_rev_bumped_flags)
db_api.sqla_listen(se.Session, 'after_rollback',
self._clear_rev_bumped_flags)
def __init__(self):
super(RevisionPlugin, self).__init__()
# background on these event hooks:
# https://docs.sqlalchemy.org/en/latest/orm/session_events.html
db_api.sqla_listen(se.Session, 'before_flush', self.bump_revisions)
db_api.sqla_listen(
se.Session, "after_flush_postexec",
self._emit_related_revision_bumps)
db_api.sqla_listen(se.Session, 'after_commit',
self._clear_rev_bumped_flags)
db_api.sqla_listen(se.Session, 'after_rollback',
self._clear_rev_bumped_flags)
def test_constrained_port_update_handles_db_retries(self):
# here we ensure all of the constraint handling logic persists
# on retriable failures to commit caused by races with another
# update
with self.port() as port:
rev = port['port']['revision_number']
new = {'port': {'name': 'nigiri'}}
def concurrent_increment(s):
db_api.sqla_remove(se.Session, 'before_commit',
concurrent_increment)
# slip in a concurrent update that will bump the revision
plugin = directory.get_plugin()
plugin.update_port(nctx.get_admin_context(),
port['port']['id'], new)
raise db_exc.DBDeadlock()
db_api.sqla_listen(se.Session, 'before_commit',
concurrent_increment)
self._update('ports', port['port']['id'], new,
headers={'If-Match': 'revision_number=%s' % rev},
expected_code=exc.HTTPPreconditionFailed.code)
def test_constrained_port_update_handles_db_retries(self):
# here we ensure all of the constraint handling logic persists
# on retriable failures to commit caused by races with another
# update
with self.port() as port:
rev = port['port']['revision_number']
new = {'port': {'name': 'nigiri'}}
def concurrent_increment(s):
db_api.sqla_remove(se.Session, 'before_commit',
concurrent_increment)
# slip in a concurrent update that will bump the revision
plugin = directory.get_plugin()
plugin.update_port(nctx.get_admin_context(),
port['port']['id'], new)
raise db_exc.DBDeadlock()
db_api.sqla_listen(se.Session, 'before_commit',
concurrent_increment)
self._update('ports', port['port']['id'], new,
headers={'If-Match': 'revision_number=%s' % rev},
expected_code=exc.HTTPPreconditionFailed.code)
def __init__(self):
super(RevisionPlugin, self).__init__()
db_api.sqla_listen(se.Session, 'before_flush', self.bump_revisions)
db_api.sqla_listen(se.Session, 'after_commit',
self._clear_rev_bumped_flags)
db_api.sqla_listen(se.Session, 'after_rollback',
self._clear_rev_bumped_flags)
def __init__(self):
super(RevisionPlugin, self).__init__()
db_api.sqla_listen(se.Session, 'before_flush', self.bump_revisions)
db_api.sqla_listen(se.Session, 'after_commit',
self._clear_rev_bumped_flags)
db_api.sqla_listen(se.Session, 'after_rollback',
self._clear_rev_bumped_flags)
def __init__(self):
super(LokiPlugin, self).__init__()
db_api.sqla_listen(se.Session, 'before_flush', self.random_deadlock)
db_api.sqla_listen(se.Session, 'loaded_as_persistent',
self.random_delay)
# compliance to SQLAlchemy 2.0.
def do_orm_execute(orm_execute_state):
if not orm_execute_state.session.in_transaction():
trace_string = '\n'.join(traceback.format_stack(sys._getframe(1)))
LOG.warning(
'ORM session: SQL execution without transaction in '
'progress, traceback:\n%s', trace_string)
try:
_debug = cfg.CONF.debug
except cfg.NoSuchOptError:
_debug = False
if _debug:
db_api.sqla_listen(orm.Session, 'do_orm_execute', do_orm_execute)
def get_object_class_by_model(model):
for obj_class in NeutronObjectRegistry.obj_classes().values():
obj_class = obj_class[0]
if getattr(obj_class, 'db_model', _NO_DB_MODEL) is model:
return obj_class
raise o_exc.NeutronDbObjectNotFoundByModel(model=model.__name__)
def register_filter_hook_on_model(model, filter_name):
obj_class = get_object_class_by_model(model)
obj_class.add_extra_filter_name(filter_name)
