Improved cleanup of service instances for failed cases

Issue-ID: TEST-402
Signed-off-by: Lukasz Rajewski <lukasz.rajewski@t-mobile.pl>
Change-Id: I348fc625a8cd2ac7c2ee506f996a506c5a4bf4f3

13 files changed, 118 insertions, 251 deletions

diff --git a/src/onaptests/scenario/basic_cnf_macro.py b/src/onaptests/scenario/basic_cnf_macro.py
index c96ce4f..1fecd95 100644
--- a/src/onaptests/scenario/basic_cnf_macro.py
+++ b/src/onaptests/scenario/basic_cnf_macro.py
@@ -66,18 +66,6 @@ class BasicCnfMacroStep(YamlTemplateBaseScenarioStep):
         return {}
 
     @property
-    def service_name(self) -> dict:
-        """Service name.
-
-        Get from YAML template.
-
-        Returns:
-            str: Service name
-
-        """
-        return next(iter(self.yaml_template.keys()))
-
-    @property
     def service_instance_name(self) -> str:
         """Service instance name.
 
diff --git a/src/onaptests/scenario/basic_vm_macro.py b/src/onaptests/scenario/basic_vm_macro.py
index e526d14..ec60e78 100644
--- a/src/onaptests/scenario/basic_vm_macro.py
+++ b/src/onaptests/scenario/basic_vm_macro.py
@@ -66,18 +66,6 @@ class BasicVmMacroStep(YamlTemplateBaseScenarioStep):
         return {}
 
     @property
-    def service_name(self) -> dict:
-        """Service name.
-
-        Get from YAML template.
-
-        Returns:
-            str: Service name
-
-        """
-        return next(iter(self.yaml_template.keys()))
-
-    @property
     def service_instance_name(self) -> str:
         """Service instance name.
 
diff --git a/src/onaptests/scenario/multi_vnf_macro.py b/src/onaptests/scenario/multi_vnf_macro.py
index 96ade6d..fc00cec 100644
--- a/src/onaptests/scenario/multi_vnf_macro.py
+++ b/src/onaptests/scenario/multi_vnf_macro.py
@@ -70,18 +70,6 @@ class MultiVnfUbuntuMacroStep(YamlTemplateBaseScenarioStep):
         return self._model_yaml_template
 
     @property
-    def service_name(self) -> dict:
-        """Service name.
-
-        Get from YAML template.
-
-        Returns:
-            str: Service name
-
-        """
-        return next(iter(self.yaml_template.keys()))
-
-    @property
     def service_instance_name(self) -> str:
         """Service instance name.
 
diff --git a/src/onaptests/scenario/pnf_macro.py b/src/onaptests/scenario/pnf_macro.py
index 630e439..f8afad5 100644
--- a/src/onaptests/scenario/pnf_macro.py
+++ b/src/onaptests/scenario/pnf_macro.py
@@ -75,18 +75,6 @@ class PnfMacroScenarioStep(YamlTemplateBaseScenarioStep):
         return {}
 
     @property
-    def service_name(self) -> dict:
-        """Service name.
-
-        Get from YAML template.
-
-        Returns:
-            str: Service name
-
-        """
-        return next(iter(self.yaml_template.keys()))
-
-    @property
     def service_instance_name(self) -> str:
         """Service instance name.
 
diff --git a/src/onaptests/steps/base.py b/src/onaptests/steps/base.py
index 06064b4..4fca3e7 100644
--- a/src/onaptests/steps/base.py
+++ b/src/onaptests/steps/base.py
@@ -7,7 +7,7 @@ import time
 from abc import ABC, abstractmethod
 from typing import Iterator, List, Optional
 
-from onapsdk.aai.business import Customer
+from onapsdk.aai.business import Customer, ServiceInstance, ServiceSubscription
 from onapsdk.configuration import settings
 from onapsdk.exceptions import SDKException, SettingsError
 from onaptests.steps.reports_collection import (Report, ReportsCollection,
@@ -20,6 +20,7 @@ from onaptests.utils.exceptions import (OnapTestException,
 
 
 IF_VALIDATION = "PYTHON_SDK_TESTS_VALIDATION"
+IF_FORCE_CLEANUP = "PYTHON_SDK_TESTS_FORCE_CLEANUP"
 
 
 class StoreStateHandler(ABC):
@@ -43,11 +44,11 @@ class StoreStateHandler(ABC):
                 if cleanup:
                     self._start_cleanup_time = time.time()
                     try:
-                        if (self._executed and self._cleanup and
+                        if (self._cleanup and self._state_execute and
                                 (self._is_validation_only or
                                     self.check_preconditions(cleanup=True))):
                             self._log_execution_state("START", cleanup)
-                            if not self._is_validation_only:
+                            if not self._is_validation_only or self._is_force_cleanup:
                                 fun(self, *args, **kwargs)
                             self._cleaned_up = True
                             execution_status = ReportStepStatus.PASS
@@ -159,6 +160,7 @@ class BaseStep(StoreStateHandler, ABC):
         self._nesting_level: int = 0
         self._break_on_error: bool = break_on_error
         self._is_validation_only = os.environ.get(IF_VALIDATION) is not None
+        self._is_force_cleanup = os.environ.get(IF_FORCE_CLEANUP) is not None
 
     def add_step(self, step: "BaseStep") -> None:
         """Add substep.
@@ -401,6 +403,54 @@ class BaseStep(StoreStateHandler, ABC):
 class YamlTemplateBaseStep(BaseStep, ABC):
     """Base YAML template step."""
 
+    def __init__(self, cleanup: bool):
+        """Initialize step."""
+
+        super().__init__(cleanup=cleanup)
+        self._service_instance: ServiceInstance = None
+        self._service_subscription: ServiceSubscription = None
+        self._customer: Customer = None
+
+    def _load_customer_and_subscription(self, reload: bool = False):
+        if self._customer is None:
+            self._customer: Customer = \
+                Customer.get_by_global_customer_id(settings.GLOBAL_CUSTOMER_ID)
+        if self._service_subscription is None or reload:
+            self._service_subscription: ServiceSubscription = \
+                self._customer.get_service_subscription_by_service_type(self.service_name)
+
+    def _load_service_instance(self):
+        if self._service_instance is None:
+            self._service_instance: ServiceInstance = \
+                self._service_subscription.get_service_instance_by_name(self.service_instance_name)
+
+    @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 service instance name.
+        If not applicable None is returned
+
+        Returns:
+            str: Service instance name
+
+        """
+        return None
+
     @property
     @abstractmethod
     def yaml_template(self) -> dict:
diff --git a/src/onaptests/steps/instantiate/service_ala_carte.py b/src/onaptests/steps/instantiate/service_ala_carte.py
index 1773aa4..528215d 100644
--- a/src/onaptests/steps/instantiate/service_ala_carte.py
+++ b/src/onaptests/steps/instantiate/service_ala_carte.py
@@ -3,7 +3,7 @@ from uuid import uuid4
 from yaml import load, SafeLoader
 
 from onapsdk.aai.cloud_infrastructure import CloudRegion, Tenant
-from onapsdk.aai.business import Customer, ServiceInstance, ServiceSubscription
+from onapsdk.aai.business import Customer
 from onapsdk.aai.business.owning_entity import OwningEntity as AaiOwningEntity
 from onapsdk.configuration import settings
 from onapsdk.exceptions import ResourceNotFound
@@ -102,7 +102,6 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
         super().__init__(cleanup=settings.CLEANUP_FLAG)
         self._yaml_template: dict = None
         self._service_instance_name: str = None
-        self._service_instance: str = None
         if not settings.ONLY_INSTANTIATE:
             self.add_step(YamlTemplateServiceOnboardStep())
             self.add_step(ConnectServiceSubToCloudRegionStep())
@@ -139,20 +138,6 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
         return {}
 
     @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.
 
@@ -187,9 +172,7 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
         """
         super().execute()
         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(service.name)
+        self._load_customer_and_subscription()
         cloud_region: CloudRegion = CloudRegion.get_by_id(
             cloud_owner=settings.CLOUD_REGION_CLOUD_OWNER,
             cloud_region_id=settings.CLOUD_REGION_ID,
@@ -229,10 +212,10 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
             service,
             cloud_region,
             tenant,
-            customer,
+            self._customer,
             owning_entity,
             settings.PROJECT,
-            service_subscription,
+            self._service_subscription,
             service_instance_name=self.service_instance_name
         )
         try:
@@ -244,10 +227,8 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
             self._logger.error("Service instantiation %s failed", self.service_instance_name)
             raise onap_test_exceptions.ServiceInstantiateException
         else:
-            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)
+            self._load_customer_and_subscription(reload=True)
+            self._load_service_instance()
 
     @YamlTemplateBaseStep.store_state(cleanup=True)
     def cleanup(self) -> None:
@@ -257,15 +238,18 @@ class YamlTemplateServiceAlaCarteInstantiateStep(YamlTemplateBaseStep):
             Exception: Service cleaning failed
 
         """
-        service_deletion = self._service_instance.delete(a_la_carte=True)
-        try:
-            service_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
-        except TimeoutError:
-            self._logger.error("Service deletion %s timed out", self._service_instance_name)
-            raise onap_test_exceptions.ServiceCleanupException
-        if service_deletion.finished:
-            self._logger.info("Service %s deleted", self._service_instance_name)
-        else:
-            self._logger.error("Service deletion %s failed", self._service_instance_name)
-            raise onap_test_exceptions.ServiceCleanupException
+        self._load_customer_and_subscription()
+        self._load_service_instance()
+        if self._service_instance:
+            service_deletion = self._service_instance.delete(a_la_carte=True)
+            try:
+                service_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
+            except TimeoutError:
+                self._logger.error("Service deletion %s timed out", self._service_instance_name)
+                raise onap_test_exceptions.ServiceCleanupException
+            if service_deletion.finished:
+                self._logger.info("Service %s deleted", self._service_instance_name)
+            else:
+                self._logger.error("Service deletion %s failed", self._service_instance_name)
+                raise onap_test_exceptions.ServiceCleanupException
         super().cleanup()
diff --git a/src/onaptests/steps/instantiate/service_macro.py b/src/onaptests/steps/instantiate/service_macro.py
index 88eef4d..4211cbf 100644
--- a/src/onaptests/steps/instantiate/service_macro.py
+++ b/src/onaptests/steps/instantiate/service_macro.py
@@ -2,10 +2,8 @@
 import time
 from typing import List
 from uuid import uuid4
-from onapsdk.aai.business.service import ServiceInstance
 from yaml import load, SafeLoader
 
-from onapsdk.aai.business.customer import Customer, ServiceSubscription
 from onapsdk.aai.business.owning_entity import OwningEntity
 from onapsdk.aai.cloud_infrastructure.cloud_region import CloudRegion
 from onapsdk.aai.cloud_infrastructure.tenant import Tenant
@@ -46,7 +44,6 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
         self._yaml_template: dict = None
         self._model_yaml_template: dict = None
         self._service_instance_name: str = None
-        self._service_instance: str = None
         if not settings.ONLY_INSTANTIATE:
             self.add_step(YamlTemplateServiceOnboardStep())
 
@@ -103,20 +100,6 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
         return self.parent.model_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.
 
@@ -151,9 +134,7 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
         """
         super().execute()
         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(service.name)
+        self._load_customer_and_subscription()
         if any(
                 filter(lambda x: x in self.yaml_template[self.service_name].keys(),
                        ["vnfs", "networks"])):
@@ -219,14 +200,14 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
 
         service_instantiation = ServiceInstantiation.instantiate_macro(
             sdc_service=service,
-            customer=customer,
+            customer=self._customer,
             owning_entity=owning_entity,
             project=settings.PROJECT,
             line_of_business=settings.LINE_OF_BUSINESS,
             platform=settings.PLATFORM,
             cloud_region=cloud_region,
             tenant=tenant,
-            service_subscription=service_subscription,
+            service_subscription=self._service_subscription,
             service_instance_name=self.service_instance_name,
             vnf_parameters=vnf_params_list,
             enable_multicloud=settings.USE_MULTICLOUD,
@@ -241,10 +222,8 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
             self._logger.error("Service instantiation %s failed", self.service_instance_name)
             raise onap_test_exceptions.ServiceInstantiateException
 
-        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)
+        self._load_customer_and_subscription(reload=True)
+        self._load_service_instance()
 
     @YamlTemplateBaseStep.store_state(cleanup=True)
     def cleanup(self) -> None:
@@ -254,6 +233,8 @@ class YamlTemplateServiceMacroInstantiateStep(YamlTemplateBaseStep):
             Exception: Service cleaning failed
 
         """
+        self._load_customer_and_subscription()
+        self._load_service_instance()
         if self._service_instance:
             service_deletion = self._service_instance.delete(a_la_carte=False)
             try:
diff --git a/src/onaptests/steps/instantiate/vf_module_ala_carte.py b/src/onaptests/steps/instantiate/vf_module_ala_carte.py
index 015e479..1682536 100644
--- a/src/onaptests/steps/instantiate/vf_module_ala_carte.py
+++ b/src/onaptests/steps/instantiate/vf_module_ala_carte.py
@@ -3,7 +3,6 @@ from uuid import uuid4
 from yaml import load, SafeLoader
 
 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 InstantiationParameter
 
@@ -26,7 +25,6 @@ class YamlTemplateVfModuleAlaCarteInstantiateStep(YamlTemplateBaseStep):
 
         self._yaml_template: dict = None
         self._service_instance_name: str = None
-        self._service_instance: ServiceInstance = None
         if settings.CLOUD_REGION_TYPE == settings.K8S_REGION_TYPE:
             # K8SProfileStep creates the requested profile and then calls
             # YamlTemplateVnfAlaCarteInstantiateStep step
@@ -66,20 +64,6 @@ class YamlTemplateVfModuleAlaCarteInstantiateStep(YamlTemplateBaseStep):
         return {}
 
     @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.
 
@@ -129,11 +113,8 @@ class YamlTemplateVfModuleAlaCarteInstantiateStep(YamlTemplateBaseStep):
 
         """
         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)
+        self._load_customer_and_subscription()
+        self._load_service_instance()
         cloud_region: CloudRegion = CloudRegion.get_by_id(
             cloud_owner=settings.CLOUD_REGION_CLOUD_OWNER,
             cloud_region_id=settings.CLOUD_REGION_ID,
@@ -166,22 +147,23 @@ class YamlTemplateVfModuleAlaCarteInstantiateStep(YamlTemplateBaseStep):
             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(a_la_carte=True)
-
-                try:
-                    vf_module_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
-                    if vf_module_deletion.failed:
-                        self._logger.error("VfModule deletion %s failed", vf_module.name)
+        if self._service_instance:
+            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(a_la_carte=True)
+
+                    try:
+                        vf_module_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
+                        if vf_module_deletion.failed:
+                            self._logger.error("VfModule deletion %s failed", vf_module.name)
+                            raise onap_test_exceptions.VfModuleCleanupException
+                        self._logger.info("VfModule %s deleted", vf_module.name)
+                    except TimeoutError:
+                        self._logger.error("VfModule deletion %s timed out", vf_module.name)
                         raise onap_test_exceptions.VfModuleCleanupException
-                    self._logger.info("VfModule %s deleted", vf_module.name)
-                except TimeoutError:
-                    self._logger.error("VfModule deletion %s timed out", vf_module.name)
-                    raise onap_test_exceptions.VfModuleCleanupException
         super().cleanup()
diff --git a/src/onaptests/steps/instantiate/vl_ala_carte.py b/src/onaptests/steps/instantiate/vl_ala_carte.py
index 414615a..7c2f4d9 100644
--- a/src/onaptests/steps/instantiate/vl_ala_carte.py
+++ b/src/onaptests/steps/instantiate/vl_ala_carte.py
@@ -3,7 +3,6 @@ from typing import Iterable
 from uuid import uuid4
 from yaml import load, SafeLoader
 
-from onapsdk.aai.business import Customer, ServiceInstance, ServiceSubscription
 from onapsdk.configuration import settings
 from onapsdk.so.instantiation import Subnet
 from onapsdk.sdc.service import Service
@@ -25,7 +24,6 @@ class YamlTemplateVlAlaCarteInstantiateStep(YamlTemplateBaseStep):
         super().__init__(cleanup=settings.CLEANUP_FLAG)
         self._yaml_template: dict = None
         self._service_instance_name: str = None
-        self._service_instance: ServiceInstance = None
         self.add_step(YamlTemplateServiceAlaCarteInstantiateStep())
 
     @property
@@ -60,20 +58,6 @@ class YamlTemplateVlAlaCarteInstantiateStep(YamlTemplateBaseStep):
         return {}
 
     @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.
 
@@ -129,15 +113,11 @@ class YamlTemplateVlAlaCarteInstantiateStep(YamlTemplateBaseStep):
         """
         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)
-        service_instance: ServiceInstance = \
-            service_subscription.get_service_instance_by_name(self.service_instance_name)
-        self._service_instance = service_instance
+        self._load_customer_and_subscription()
+        self._load_service_instance()
         for idx, network in enumerate(service.networks):
             # for network in self.yaml_template[self.service_name]["networks"]:
-            net_instantiation = service_instance.add_network(
+            net_instantiation = self._service_instance.add_network(
                 network,
                 settings.LINE_OF_BUSINESS,
                 settings.PLATFORM,
@@ -159,7 +139,7 @@ class YamlTemplateVlAlaCarteInstantiateStep(YamlTemplateBaseStep):
         Raises:
             Exception: VL cleaning failed
         """
-        if self._cleanup:
+        if self._service_instance:
             for net_instance in self._service_instance.network_instances:
                 self._logger.info("Start network deletion %s", net_instance.name)
                 net_deletion = net_instance.delete(a_la_carte=True)
@@ -171,4 +151,4 @@ class YamlTemplateVlAlaCarteInstantiateStep(YamlTemplateBaseStep):
                 except TimeoutError:
                     self._logger.error("VL deletion %s timed out", net_instance.name)
                     raise onap_test_exceptions.NetworkCleanupException
-            super().cleanup()
+        super().cleanup()
diff --git a/src/onaptests/steps/instantiate/vnf_ala_carte.py b/src/onaptests/steps/instantiate/vnf_ala_carte.py
index a7ac5c3..2aa5e5e 100644
--- a/src/onaptests/steps/instantiate/vnf_ala_carte.py
+++ b/src/onaptests/steps/instantiate/vnf_ala_carte.py
@@ -2,7 +2,6 @@ from uuid import uuid4
 from yaml import load, SafeLoader
 
 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
 
@@ -23,7 +22,6 @@ class YamlTemplateVnfAlaCarteInstantiateStep(YamlTemplateBaseStep):
         super().__init__(cleanup=settings.CLEANUP_FLAG)
         self._yaml_template: dict = None
         self._service_instance_name: str = None
-        self._service_instance: ServiceInstance = None
         self.add_step(YamlTemplateServiceAlaCarteInstantiateStep())
 
     @property
@@ -58,20 +56,6 @@ class YamlTemplateVnfAlaCarteInstantiateStep(YamlTemplateBaseStep):
         return {}
 
     @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.
 
@@ -102,11 +86,8 @@ class YamlTemplateVnfAlaCarteInstantiateStep(YamlTemplateBaseStep):
         """
         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)
+        self._load_customer_and_subscription()
+        self._load_service_instance()
         cloud_region: CloudRegion = CloudRegion.get_by_id(
             cloud_owner=settings.CLOUD_REGION_CLOUD_OWNER,
             cloud_region_id=settings.CLOUD_REGION_ID,
@@ -137,15 +118,16 @@ class YamlTemplateVnfAlaCarteInstantiateStep(YamlTemplateBaseStep):
             Exception: VNF cleaning failed
 
         """
-        for vnf_instance in self._service_instance.vnf_instances:
-            vnf_deletion = vnf_instance.delete(a_la_carte=True)
-
-            try:
-                vnf_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
-                if vnf_deletion.failed:
-                    self._logger.error("VNF deletion %s failed", vnf_instance.name)
+        if self._service_instance:
+            for vnf_instance in self._service_instance.vnf_instances:
+                vnf_deletion = vnf_instance.delete(a_la_carte=True)
+
+                try:
+                    vnf_deletion.wait_for_finish(settings.ORCHESTRATION_REQUEST_TIMEOUT)
+                    if vnf_deletion.failed:
+                        self._logger.error("VNF deletion %s failed", vnf_instance.name)
+                        raise onap_test_exceptions.VnfCleanupException
+                except TimeoutError:
+                    self._logger.error("VNF deletion %s timed out", vnf_instance.name)
                     raise onap_test_exceptions.VnfCleanupException
-            except TimeoutError:
-                self._logger.error("VNF deletion %s timed out", vnf_instance.name)
-                raise onap_test_exceptions.VnfCleanupException
         super().cleanup()
diff --git a/src/onaptests/steps/loop/clamp.py b/src/onaptests/steps/loop/clamp.py
index 245abc6..dc00eb1 100644
--- a/src/onaptests/steps/loop/clamp.py
+++ b/src/onaptests/steps/loop/clamp.py
@@ -65,21 +65,6 @@ class ClampStep(YamlTemplateBaseStep):
     def model_yaml_template(self) -> dict:
         return {}
 
-    @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()))
-        else:
-            return self.parent.service_name
-
     def check(self, operational_policies: list, is_template: bool = False) -> str:
         """Check CLAMP requirements to create a loop."""
         self._logger.info("Check operational policy")
diff --git a/src/onaptests/steps/onboard/clamp.py b/src/onaptests/steps/onboard/clamp.py
index 7cb20ff..22783c6 100644
--- a/src/onaptests/steps/onboard/clamp.py
+++ b/src/onaptests/steps/onboard/clamp.py
@@ -58,21 +58,6 @@ class OnboardClampStep(YamlTemplateBaseStep):
     def model_yaml_template(self) -> dict:
         return {}
 
-    @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()))
-        else:
-            return self.parent.service_name
-
     @YamlTemplateBaseStep.store_state
     def execute(self):
         """Onboard service."""
diff --git a/src/onaptests/steps/onboard/service.py b/src/onaptests/steps/onboard/service.py
index be0f6fd..bcf153f 100644
--- a/src/onaptests/steps/onboard/service.py
+++ b/src/onaptests/steps/onboard/service.py
@@ -171,20 +171,6 @@ class YamlTemplateServiceOnboardStep(YamlTemplateBaseStep):
             return self._model_yaml_template
         return self.parent.model_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
-
     @YamlTemplateBaseStep.store_state
     def execute(self):
         """Onboard service."""