def _call_on_drivers(self,
method_name,
context,
continue_on_failure=False):
"""Helper method for calling a method across all policy drivers.
:param method_name: name of the method to call
:param context: context parameter to pass to each method call
:param continue_on_failure: whether or not to continue to call
all policy drivers once one has raised an exception
:raises: neutron.services.group_policy.common.GroupPolicyDriverError
if any policy driver call fails.
"""
error = False
drivers = (self.ordered_policy_drivers
if not method_name.startswith('delete') else
self.reverse_ordered_policy_drivers)
for driver in drivers:
try:
getattr(driver.obj, method_name)(context)
except gp_exc.GroupPolicyException:
# This is an exception for the user.
raise
except Exception:
# This is an internal failure.
LOG.exception(
_("Policy driver '%(name)s' failed in %(method)s"), {
'name': driver.name,
'method': method_name
})
error = True
if not continue_on_failure:
break
if error:
raise gp_exc.GroupPolicyDriverError(method=method_name)
def ensure_tenant(self, plugin_context, tenant_id):
for driver in self.ordered_policy_drivers:
if isinstance(driver.obj, group_policy_driver_api.PolicyDriver):
try:
driver.obj.ensure_tenant(plugin_context, tenant_id)
except Exception:
LOG.exception(_LE("Policy driver '%s' failed in "
"ensure_tenant"), driver.name)
raise gp_exc.GroupPolicyDriverError(method="ensure_tenant")
def _call_on_drivers(self,
method_name,
context,
continue_on_failure=False):
"""Helper method for calling a method across all policy drivers.
:param method_name: name of the method to call
:param context: context parameter to pass to each method call
:param continue_on_failure: whether or not to continue to call
all policy drivers once one has raised an exception
:raises: neutron.services.group_policy.common.GroupPolicyDriverError
if any policy driver call fails.
"""
error = False
drivers = (self.ordered_policy_drivers
if not method_name.startswith('delete') else
self.reverse_ordered_policy_drivers)
for driver in drivers:
try:
getattr(driver.obj, method_name)(context)
except Exception as e:
if db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"Policy driver '%(name)s' failed in"
" %(method)s, operation will be retried", {
'name': driver.name,
'method': method_name
})
elif isinstance(e, gp_exc.GroupPolicyException) or isinstance(
e, n_exc.NeutronException) or isinstance(
e, oslo_policy.PolicyNotAuthorized):
with excutils.save_and_reraise_exception():
LOG.exception(
_LE("Policy driver '%(name)s' failed in"
" %(method)s"), {
'name': driver.name,
'method': method_name
})
else:
error = True
# We are eating a non-GBP/non-Neutron exception here
LOG.exception(
_LE("Policy driver '%(name)s' failed in %(method)s"), {
'name': driver.name,
'method': method_name
})
if not continue_on_failure:
break
if error:
raise gp_exc.GroupPolicyDriverError(method=method_name)
def ensure_tenant(self, plugin_context, tenant_id):
for driver in self.ordered_policy_drivers:
if isinstance(driver.obj, group_policy_driver_api.PolicyDriver):
try:
driver.obj.ensure_tenant(plugin_context, tenant_id)
except Exception as e:
if db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"Policy driver '%(driver)s' failed in "
"ensure_tenant, operation will "
"be retried", {'driver': driver.name})
else:
LOG.exception(
"Policy driver '%s' failed in "
"ensure_tenant", driver.name)
raise gp_exc.GroupPolicyDriverError(
method="ensure_tenant")
def _call_on_ext_drivers(self, method_name, session, data, result):
"""Helper method for calling a method across all extension drivers."""
for driver in self.ordered_ext_drivers:
try:
getattr(driver.obj, method_name)(session, data, result)
except (gp_exc.GroupPolicyException, n_exc.NeutronException):
with excutils.save_and_reraise_exception():
LOG.exception(
_LE("Extension driver '%(name)s' "
"failed in %(method)s"),
{'name': driver.name, 'method': method_name}
)
except Exception:
LOG.exception(_LE("Extension driver '%(name)s' "
"failed in %(method)s"),
{'name': driver.name, 'method': method_name})
# We are replacing a non-GBP/non-Neutron exception here
raise gp_exc.GroupPolicyDriverError(method=method_name)