def update_servicechain_instance(self, context,
servicechain_instance_id,
servicechain_instance):
session = context.session
with session.begin(subtransactions=True):
original_sc_instance = self.get_servicechain_instance(
context, servicechain_instance_id)
updated_sc_instance = super(ServiceChainPlugin,
self).update_servicechain_instance(
context, servicechain_instance_id,
servicechain_instance)
sc_context = servicechain_context.ServiceChainInstanceContext(
self, context, updated_sc_instance,
original_sc_instance=original_sc_instance)
self.driver_manager.update_servicechain_instance_precommit(
sc_context)
self.driver_manager.update_servicechain_instance_postcommit(
sc_context)
return updated_sc_instance
def delete_servicechain_instance(self, context, servicechain_instance_id):
session = context.session
with session.begin(subtransactions=True):
sc_instance = self.get_servicechain_instance(
context,
servicechain_instance_id)
sc_context = servicechain_context.ServiceChainInstanceContext(
self, context, sc_instance)
self.driver_manager.delete_servicechain_instance_precommit(
sc_context)
super(ServiceChainPlugin, self).delete_servicechain_instance(
context, servicechain_instance_id)
try:
self.driver_manager.delete_servicechain_instance_postcommit(
sc_context)
except Exception:
LOG.exception(_("delete_servicechain_instance_postcommit failed "
"for servicechain_instance %s"),
servicechain_instance_id)
def create_servicechain_instance(self, context, servicechain_instance):
session = context.session
with session.begin(subtransactions=True):
result = super(ServiceChainPlugin,
self).create_servicechain_instance(
context, servicechain_instance)
sc_context = servicechain_context.ServiceChainInstanceContext(
self, context, result)
self.driver_manager.create_servicechain_instance_precommit(
sc_context)
try:
self.driver_manager.create_servicechain_instance_postcommit(
sc_context)
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(_(
"driver_manager.create_servicechain_instance_postcommit "
"failed, deleting servicechain_instance %s"),
result['id'])
self.delete_servicechain_instance(context, result['id'])
return result
