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import time
from typing import Iterable
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.so.instantiation import VnfParameter
from ..base import YamlTemplateBaseStep
from .vnf_ala_carte import YamlTemplateVnfAlaCarteInstantiateStep
from .k8s_profile_create import K8SProfileStep
class YamlTemplateVfModuleAlaCarteInstantiateStep(YamlTemplateBaseStep):
"""Instantiate vf module a'la carte using YAML template."""
def __init__(self, cleanup=False):
"""Initialize step.
Substeps:
- YamlTemplateVnfAlaCarteInstantiateStep.
"""
super().__init__(cleanup=cleanup)
self._yaml_template: dict = None
self._service_instance_name: str = None
self._service_instance: ServiceInstance = None
if settings.CLOUD_REGION_TYPE == "k8s":
self.add_step(K8SProfileStep(cleanup))
else:
self.add_step(YamlTemplateVnfAlaCarteInstantiateStep(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
def get_vnf_parameters(self, vnf_name: str) -> Iterable[VnfParameter]:
"""Get VNF parameters from YAML template.
Args:
vnf_name (str): VNF name to get parameters for.
Yields:
Iterator[Iterable[VnfParameter]]: VNF parameter
"""
# workaround, as VNF name differs from model name (added " 0")
vnf_name = vnf_name.split()[0]
for vnf in self.yaml_template[self.service_name]["vnfs"]:
if vnf["vnf_name"] == vnf_name:
for vnf_parameter in vnf["vnf_parameters"]:
yield VnfParameter(
name=vnf_parameter["name"],
value=vnf_parameter["value"]
)
@YamlTemplateBaseStep.store_state
def execute(self) -> None:
"""Instantiate Vf module.
Use settings values:
- GLOBAL_CUSTOMER_ID.
Raises:
Exception: Vf module instantiation failed
"""
super().execute()
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)
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 vnf_instance in self._service_instance.vnf_instances:
# possible to have several moduels for 1 VNF
for vf_module in vnf_instance.vnf.vf_modules:
vf_module_instantiation = vnf_instance.add_vf_module(
vf_module,
cloud_region,
tenant,
self._service_instance_name,
vnf_parameters=self.get_vnf_parameters(vnf_instance.vnf.name))
while not vf_module_instantiation.finished:
time.sleep(10)
if vf_module_instantiation.failed:
raise Exception("Vf module instantiation failed")
def cleanup(self) -> None:
"""Cleanup Vf module.
Raises:
Exception: Vf module cleaning failed
"""
for vnf_instance in self._service_instance.vnf_instances:
self._logger.debug("VNF instance %s found in Service Instance ",
vnf_instance.name)
self._logger.info("Get VF Modules")
for vf_module in vnf_instance.vf_modules:
self._logger.info("Delete VF Module %s",
vf_module.name)
vf_module_deletion = vf_module.delete()
nb_try = 0
nb_try_max = 30
while not vf_module_deletion.finished and nb_try < nb_try_max:
self._logger.info("Wait for vf module deletion")
nb_try += 1
time.sleep(20)
if vf_module_deletion.finished:
self._logger.info("VfModule %s deleted", vf_module.name)
else:
self._logger.error("VfModule deletion %s failed", vf_module.name)
raise Exception("Vf module cleanup failed")
super().cleanup()
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