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 _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()
# 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. """Unit tests for DB API.""" import mock from oslo.config import cfg from oslo.db import api from oslo.db import exception from oslo.db.openstack.common import importutils from tests import utils as test_utils sqla = importutils.import_module("sqlalchemy") def get_backend(): return DBAPI() class DBAPI(object): def _api_raise(self, *args, **kwargs): """Simulate raising a database-has-gone-away error This method creates a fake OperationalError with an ID matching a valid MySQL "database has gone away" situation. It also decrements the error_counter so that we can artificially keep track of how many times this function is called by the wrapper. When error_counter reaches zero, this function returns True, simulating
# 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. """Unit tests for DB API.""" import mock from oslo.db import api from oslo.db import exception from oslo.db.openstack.common import importutils from tests import utils as test_utils sqla = importutils.import_module('sqlalchemy') def get_backend(): return DBAPI() class DBAPI(object): def _api_raise(self, *args, **kwargs): """Simulate raising a database-has-gone-away error This method creates a fake OperationalError with an ID matching a valid MySQL "database has gone away" situation. It also decrements the error_counter so that we can artificially keep track of how many times this function is called by the wrapper. When error_counter reaches zero, this function returns True, simulating
# # 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. """Unit tests for DB API.""" import mock from oslo.db import api from oslo.db import exception from oslo.db.openstack.common import importutils from tests import utils as test_utils sqla = importutils.import_module('sqlalchemy') def get_backend(): return DBAPI() class DBAPI(object): def _api_raise(self, *args, **kwargs): """Simulate raising a database-has-gone-away error This method creates a fake OperationalError with an ID matching a valid MySQL "database has gone away" situation. It also decrements the error_counter so that we can artificially keep track of how many times this function is called by the wrapper. When error_counter reaches zero, this function returns True, simulating