def _call_drivers(self, method_name, context, raise_orig_exc=False):
for driver in self.ordered_drivers:
try:
getattr(driver.obj, method_name)(context)
except Exception as e:
# This is an internal failure.
if db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"DB exception raised by extension driver "
"'%(name)s' in %(method)s", {
'name': driver.name,
'method': method_name
},
exc_info=e)
LOG.exception(e)
LOG.error(
"%(plugin)s driver '%(name)s' "
"failed in %(method)s", {
'name': driver.name,
'method': method_name,
'plugin': name
})
if raise_orig_exc:
raise
else:
raise exception(method=method_name)
def extend_network_dict_bulk(self, session, results):
try:
self._md.extend_network_dict_bulk(session, results)
except Exception as e:
with excutils.save_and_reraise_exception():
if db_api.is_retriable(e):
LOG.debug(
"APIC AIM extend_network_dict got retriable "
"exception: %s", type(e))
else:
LOG.exception("APIC AIM extend_network_dict failed")
def extend_address_scope_dict(self, session, base_model, result):
try:
self._md.extend_address_scope_dict(session, base_model, result)
except Exception as e:
with excutils.save_and_reraise_exception():
if db_api.is_retriable(e):
LOG.debug(
"APIC AIM extend_address_scope_dict got "
"retriable exception: %s", type(e))
else:
LOG.exception("APIC AIM extend_address_scope_dict failed")
def extend_subnet_dict(self, session, base_model, result):
try:
self._md.extend_subnet_dict(session, base_model, result)
res_dict = self.get_subnet_extn_db(session, result['id'])
result[cisco_apic.SNAT_HOST_POOL] = (res_dict.get(
cisco_apic.SNAT_HOST_POOL, False))
result[cisco_apic.ACTIVE_ACTIVE_AAP] = (res_dict.get(
cisco_apic.ACTIVE_ACTIVE_AAP, False))
except Exception as e:
with excutils.save_and_reraise_exception():
if db_api.is_retriable(e):
LOG.debug(
"APIC AIM extend_subnet_dict got retriable "
"exception: %s", type(e))
else:
LOG.exception("APIC AIM extend_subnet_dict failed")
def ensure_tenant(self, plugin_context, tenant_id):
for driver in self.ordered_mech_drivers:
if isinstance(driver.obj, driver_api.MechanismDriver):
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(
"DB exception raised by Mechanism "
"driver '%(name)s' in ensure_tenant",
{'name': driver.name},
exc_info=e)
LOG.exception(
"Mechanism driver '%s' failed in "
"ensure_tenant", driver.name)
raise ml2_exc.MechanismDriverError(method="ensure_tenant")
def _call_on_extended_drivers(self,
method_name,
context,
continue_on_failure=False,
raise_db_retriable=False):
"""Call a method on all extended mechanism 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 mechanism drivers once one has raised an exception
:param raise_db_retriable: whether or not to treat retriable db
exception by mechanism drivers to propagate up to upper layer so
that upper layer can handle it or error in ML2 player
:raises: neutron.plugins.ml2.common.MechanismDriverError
if any mechanism driver call fails. or DB retriable error when
raise_db_retriable=False. See neutron.db.api.is_retriable for
what db exception is retriable
"""
errors = []
for driver in self.ordered_mech_drivers:
if isinstance(driver.obj, driver_api.MechanismDriver):
try:
getattr(driver.obj, method_name)(context)
except Exception as e:
if raise_db_retriable and db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"DB exception raised by Mechanism "
"driver '%(name)s' in %(method)s", {
'name': driver.name,
'method': method_name
},
exc_info=e)
LOG.exception(
"Mechanism driver '%(name)s' failed in "
"%(method)s", {
'name': driver.name,
'method': method_name
})
errors.append(e)
if not continue_on_failure:
break
if errors:
raise ml2_exc.MechanismDriverError(method=method_name,
errors=errors)
def ensure_tenant(self, plugin_context, tenant_id):
for driver in self.ordered_policy_drivers:
if isinstance(driver.obj, 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_dict_driver(self,
method_name,
session,
base_model,
result,
extended_only=False,
has_base_model=True):
# Bulk operations might not be implemented by all drivers
def noop(*args, **kwargs):
pass
for driver in self.ordered_ext_drivers:
if not extended_only or isinstance(driver.obj,
driver_api.ExtensionDriver):
try:
if not has_base_model:
getattr(driver.obj, method_name, noop)(session, result)
else:
getattr(driver.obj, method_name,
noop)(session, base_model, result)
except Exception as e:
if db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"DB exception raised by extension driver "
"'%(name)s' in %(method)s", {
'name': driver.name,
'method': method_name
},
exc_info=e)
LOG.exception(
"Extension driver '%(name)s' failed in %(method)s", {
'name': driver.name,
'method': method_name
})
raise ml2_exc.ExtensionDriverError(driver=driver.name)
def _destroy_servicechain_nodes(self, context, destroyers):
# Actual node disruption
try:
for destroy in destroyers.values():
driver = destroy['driver']
try:
driver.delete(destroy['context'])
except exc.NodeDriverError:
LOG.error("Node destroy failed, for node %s ",
driver['context'].current_node['id'])
except Exception as e:
if db_api.is_retriable(e):
with excutils.save_and_reraise_exception():
LOG.debug(
"Node driver '%(name)s' failed in"
" %(method)s, operation will be retried", {
'name': driver._name,
'method': 'delete'
})
LOG.exception(e)
finally:
self.driver_manager.clear_node_owner(destroy['context'])
finally:
self.plumber.unplug_services(context, list(destroyers.values()))
def _call_on_drivers(self,
method_name,
context=None,
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)
if method_name == 'start_rpc_listeners':
servers = []
for driver in drivers:
try:
if method_name == 'start_rpc_listeners':
server = getattr(driver.obj, method_name)()
if server:
servers.extend(server)
else:
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(
"Policy driver '%(name)s' failed in"
" %(method)s", {
'name': driver.name,
'method': method_name
})
elif isinstance(e, sqlalchemy_exc.InvalidRequestError):
LOG.exception(
"Policy driver '%(name)s' failed in %(method)s ",
"with sqlalchemy.exc.InvalidRequestError", {
'name': driver.name,
'method': method_name
})
raise oslo_db_excp.RetryRequest(e)
else:
error = True
# We are eating a non-GBP/non-Neutron exception here
LOG.exception(
"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)
if method_name == 'start_rpc_listeners':
return servers
