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import time
from uuid import uuid4
from yaml import load
from onapsdk.aai.cloud_infrastructure import CloudRegion, Tenant
from onapsdk.aai.business import Customer, ServiceInstance, ServiceSubscription
from onapsdk.configuration import settings
from onapsdk.sdc.service import Service
from onapsdk.vid import LineOfBusiness, Platform
from ..base import YamlTemplateBaseStep
from .service_ala_carte import YamlTemplateServiceAlaCarteInstantiateStep
class YamlTemplateVnfAlaCarteInstantiateStep(YamlTemplateBaseStep):
"""Instantiate vnf a'la carte using YAML template."""
def __init__(self, cleanup=False):
"""Initialize step.
Substeps:
- YamlTemplateServiceAlaCarteInstantiateStep.
"""
super().__init__(cleanup=cleanup)
self._yaml_template: dict = None
self._service_instance_name: str = None
self._service_instance: ServiceInstance = None
self.add_step(YamlTemplateServiceAlaCarteInstantiateStep(cleanup))
@property
def yaml_template(self) -> dict:
"""Step YAML template.
Load from file if it's a root step, get from parent otherwise.
Returns:
dict: Step YAML template
"""
if self.is_root:
if not self._yaml_template:
with open(settings.SERVICE_YAML_TEMPLATE, "r") as yaml_template:
self._yaml_template: dict = load(yaml_template)
return self._yaml_template
return self.parent.yaml_template
@property
def service_name(self) -> str:
"""Service name.
Get from YAML template if it's a root step, get from parent otherwise.
Returns:
str: Service name
"""
if self.is_root:
return next(iter(self.yaml_template.keys()))
return self.parent.service_name
@property
def service_instance_name(self) -> str:
"""Service instance name.
Generate using `service_name` and `uuid4()` function if it's a root step,
get from parent otherwise.
Returns:
str: Service instance name
"""
if self.is_root:
if not self._service_instance_name:
self._service_instance_name: str = f"{self.service_name}-{str(uuid4())}"
return self._service_instance_name
return self.parent.service_instance_name
@YamlTemplateBaseStep.store_state
def execute(self):
"""Instantiate vnf.
Use settings values:
- GLOBAL_CUSTOMER_ID,
- LINE_OF_BUSINESS.
Raises:
Exception: VNF instantiation failed
"""
super().execute()
service: Service = Service(self.service_name)
customer: Customer = Customer.get_by_global_customer_id(settings.GLOBAL_CUSTOMER_ID)
service_subscription: ServiceSubscription = customer.get_service_subscription_by_service_type(self.service_name)
self._service_instance: ServiceInstance = service_subscription.get_service_instance_by_name(self.service_instance_name)
line_of_business: LineOfBusiness = LineOfBusiness(settings.LINE_OF_BUSINESS)
platform: Platform = Platform(settings.PLATFORM)
cloud_region: CloudRegion = CloudRegion.get_by_id(
cloud_owner=settings.CLOUD_REGION_CLOUD_OWNER,
cloud_region_id=settings.CLOUD_REGION_ID,
)
tenant: Tenant = cloud_region.get_tenant(settings.TENANT_ID)
for idx, vnf in enumerate(service.vnfs):
vnf_instantiation = self._service_instance.add_vnf(
vnf,
line_of_business,
platform,
cloud_region,
tenant,
f"{self.service_instance_name}_vnf_{idx}")
while not vnf_instantiation.finished:
time.sleep(10)
if vnf_instantiation.failed:
raise Exception("Vnf instantiation failed")
def cleanup(self) -> None:
"""Cleanup VNF.
Raises:
Exception: VNF cleaning failed
"""
for vnf_instance in self._service_instance.vnf_instances:
vnf_deletion = vnf_instance.delete()
nb_try = 0
nb_try_max = 30
while not vnf_deletion.finished and nb_try < nb_try_max:
self._logger.info("Wait for vnf deletion")
nb_try += 1
time.sleep(15)
if vnf_deletion.finished:
self._logger.info("VNF %s deleted", vnf_instance.name)
else:
self._logger.error("VNF deletion %s failed", vnf_instance.name)
raise Exception("VNF Cleanup failed")
super().cleanup()
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