def _heal_vnf(self, context, vnf_instance, vim_connection_info,
heal_vnf_request):
inst_vnf_info = vnf_instance.instantiated_vnf_info
try:
self._vnf_manager.invoke(vim_connection_info.vim_type,
'heal_vnf',
context=context,
vnf_instance=vnf_instance,
vim_connection_info=vim_connection_info,
heal_vnf_request=heal_vnf_request)
except Exception as exp:
with excutils.save_and_reraise_exception() as exc_ctxt:
exc_ctxt.reraise = False
LOG.error(
"Failed to heal vnf %(id)s in infra driver. "
"Error: %(error)s", {
"id": vnf_instance.id,
"error": encodeutils.exception_to_unicode(exp)
})
raise exceptions.VnfHealFailed(
id=vnf_instance.id,
error=encodeutils.exception_to_unicode(exp))
try:
self._vnf_manager.invoke(vim_connection_info.vim_type,
'heal_vnf_wait',
context=context,
vnf_instance=vnf_instance,
vim_connection_info=vim_connection_info)
except Exception as exp:
LOG.error(
"Failed to update vnf %(id)s resources for instance "
"%(instance)s. Error: %(error)s", {
'id': vnf_instance.id,
'instance': inst_vnf_info.instance_id,
'error': encodeutils.exception_to_unicode(exp)
})
try:
self._vnf_manager.invoke(vim_connection_info.vim_type,
'post_heal_vnf',
context=context,
vnf_instance=vnf_instance,
vim_connection_info=vim_connection_info,
heal_vnf_request=heal_vnf_request)
self._vnf_instance_update(context, vnf_instance, task_state=None)
except Exception as exp:
with excutils.save_and_reraise_exception() as exc_ctxt:
exc_ctxt.reraise = False
LOG.error(
"Failed to store updated resources information for "
"instance %(instance)s for vnf %(id)s. "
"Error: %(error)s", {
'id': vnf_instance.id,
'instance': inst_vnf_info.instance_id,
'error': encodeutils.exception_to_unicode(exp)
})
raise exceptions.VnfHealFailed(
id=vnf_instance.id,
error=encodeutils.exception_to_unicode(exp))
def _respawn_vnf(self, context, vnf_instance, vim_connection_info,
heal_vnf_request):
try:
self._delete_vnf_instance_resources(
context,
vnf_instance,
vim_connection_info,
update_instantiated_state=False)
except Exception as exc:
with excutils.save_and_reraise_exception() as exc_ctxt:
exc_ctxt.reraise = False
err_msg = ("Failed to delete vnf resources for vnf instance "
"%(id)s before respawning. The vnf is in "
"inconsistent state. Error: %(error)s")
LOG.error(err_msg % {
"id": vnf_instance.id,
"error": six.text_type(exc)
})
raise exceptions.VnfHealFailed(
id=vnf_instance.id,
error=encodeutils.exception_to_unicode(exc))
# InstantiateVnfRequest is not stored in the db as it's mapped
# to InstantiatedVnfInfo version object. Convert InstantiatedVnfInfo
# version object to InstantiateVnfRequest so that vnf can be
# instantiated.
instantiate_vnf_request = objects.InstantiateVnfRequest.\
from_vnf_instance(vnf_instance)
try:
self._instantiate_vnf(context, vnf_instance, vim_connection_info,
instantiate_vnf_request)
except Exception as exc:
with excutils.save_and_reraise_exception() as exc_ctxt:
exc_ctxt.reraise = False
err_msg = ("Failed to instantiate vnf instance "
"%(id)s after termination. The vnf is in "
"inconsistent state. Error: %(error)s")
LOG.error(err_msg % {
"id": vnf_instance.id,
"error": six.text_type(exc)
})
raise exceptions.VnfHealFailed(
id=vnf_instance.id,
error=encodeutils.exception_to_unicode(exc))
self._vnf_instance_update(
context,
vnf_instance,
instantiation_state=fields.VnfInstanceState.INSTANTIATED,
task_state=None)
def post_heal_vnf(self, context, vnf_instance, vim_connection_info,
heal_vnf_request):
"""Update resource_id for each vnfc resources
:param context: A RequestContext
:param vnf_instance: tacker.objects.VnfInstance to be healed
:vim_info: Credentials to initialize Vim connection
:heal_vnf_request: tacker.objects.HealVnfRequest object containing
parameters passed in the heal request
"""
access_info = vim_connection_info.access_info
region_name = access_info.get('region')
heatclient = hc.HeatClient(access_info, region_name)
inst_vnf_info = vnf_instance.instantiated_vnf_info
stack_resources = self._get_stack_resources(inst_vnf_info.instance_id,
heatclient)
vnfc_resources = self._get_vnfc_resources_from_heal_request(
inst_vnf_info, heal_vnf_request)
for vnfc_res_info in vnfc_resources:
stack_id = vnfc_res_info.metadata.get("stack_id")
resources = stack_resources.get(stack_id)
if not resources:
# NOTE(tpatil): This could happen when heat child stacks
# and the stack_id stored in metadata of vnfc_res_info are
# not in sync. There is no point in syncing inconsistent
# resources information so exit with an error,
error = "Failed to find stack_id %s" % stack_id
raise exceptions.VnfHealFailed(id=vnf_instance.id, error=error)
self._update_vnfc_resource_info(vnf_instance,
vnfc_res_info,
{stack_id: resources},
update_network_resource=False)
def _resource_mark_unhealthy():
vnfc_resources = self._get_vnfc_resources_from_heal_request(
inst_vnf_info, heal_vnf_request)
vdu_resources = _get_vdu_resources(vnfc_resources)
stack_resources = self._get_stack_resources(
inst_vnf_info.instance_id, heatclient)
cause = heal_vnf_request.cause or "Healing"
for stack_uuid, resource_name in \
_prepare_stack_resources_for_updation(
vdu_resources, stack_resources):
try:
LOG.info("Marking resource %(resource)s as unhealthy for "
"stack %(stack)s for vnf instance %(id)s",
{"resource": resource_name,
"stack": stack_uuid,
"id": vnf_instance.id})
heatclient.resource_mark_unhealthy(
stack_id=stack_uuid,
resource_name=resource_name, mark_unhealthy=True,
resource_status_reason=cause)
except Exception as exp:
msg = ("Failed to mark stack '%(stack_id)s' resource as "
"unhealthy for resource '%(resource)s', "
"Error: %(error)s")
raise exceptions.VnfHealFailed(id=vnf_instance.id,
error=msg % {"stack_id": inst_vnf_info.instance_id,
"resource": resource_name,
"error": str(exp)})
def _get_stack_status():
stack_statuses = ["CREATE_COMPLETE", "UPDATE_COMPLETE"]
stack = heatclient.get(inst_vnf_info.instance_id)
if stack.stack_status not in stack_statuses:
error = ("Healing of vnf instance %(id)s is possible only "
"when stack %(stack_id)s status is %(statuses)s, "
"current stack status is %(status)s")
raise exceptions.VnfHealFailed(id=vnf_instance.id,
error=error % {"id": vnf_instance.id,
"stack_id": inst_vnf_info.instance_id,
"statuses": ",".join(stack_statuses),
"status": stack.stack_status})
