Added case in Nornir if services.yaml is empty

nornir.log

@@ -18580,3 +18580,129 @@ nornir.core.exceptions.NornirSubTaskError: Subtask: napalm_configure (failed)
 2025-05-23 14:51:32,189 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
 2025-05-23 14:52:11,522 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
 2025-05-23 14:52:43,582 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:08:33,175 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:08:33,177 - nornir.core.task -    ERROR -      start() - Host 'L1': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:08:33,178 - nornir.core.task -    ERROR -      start() - Host 'L2': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:08:33,178 - nornir.core.task -    ERROR -      start() - Host 'L3': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:08:33,179 - nornir.core.task -    ERROR -      start() - Host 'L4': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:08:33,179 - nornir.core.task -    ERROR -      start() - Host 'S1': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:08:33,180 - nornir.core.task -    ERROR -      start() - Host 'S2': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 32, in configure_service
+    services = load_service_file()
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 19, in load_service_file
+    return services[0]["services"]
+TypeError: 'generator' object is not subscriptable
+
+2025-05-24 16:09:04,222 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:09:26,350 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:10:50,759 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:10:50,764 - nornir.core.task -    ERROR -      start() - Host 'L2': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:10:50,765 - nornir.core.task -    ERROR -      start() - Host 'L1': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:10:50,766 - nornir.core.task -    ERROR -      start() - Host 'L3': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:10:50,769 - nornir.core.task -    ERROR -      start() - Host 'S1': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:10:50,770 - nornir.core.task -    ERROR -      start() - Host 'L4': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:10:50,771 - nornir.core.task -    ERROR -      start() - Host 'S2': task 'configure_service' failed with traceback:
+Traceback (most recent call last):
+  File "/home/ins/.local/lib/python3.10/site-packages/nornir/core/task.py", line 98, in start
+    r = self.task(self, **self.params)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 34, in configure_service
+    service_per_device = get_service_per_device(services)
+  File "/home/ins/Lab/template-vxlan-lab-rafael/service_deployment/nornir_implementation/main.py", line 24, in get_service_per_device
+    for service in services:
+TypeError: 'NoneType' object is not iterable
+
+2025-05-24 16:11:33,048 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts
+2025-05-24 16:11:46,857 -  nornir.core -     INFO -        run() - Running task 'configure_service' with args {} on 6 hosts

service_deployment/nornir_implementation/main.py

@@ -21,11 +21,12 @@ def load_service_file():
 
 def get_service_per_device(services):
     service_per_device = {}
-    for service in services:
-        for host in list(service["fabric"].keys()):
-            if host not in service_per_device:
-                service_per_device[host] = []
-            service_per_device[host].append(service)
+    if services != None:
+        for service in services:
+            for host in list(service["fabric"].keys()):
+                if host not in service_per_device:
+                    service_per_device[host] = []
+                service_per_device[host].append(service)
     return service_per_device
 
 def configure_service(task):

services.yaml

 ---
 services:
-  - name: "CustA"
-    vni: 10100
-    description: "Customer A VxLAN service"
-    fabric:
-      L1:
-        vlan: 100
-        interfaces:
-          - name: "eth3"
-            description: H1
-      L2:
-        vlan: 100
-        interfaces:
-          - name: "eth3"
-            description: H3
-  - name: "CustB"
-    vni: 10101
-    description: "Customer B VxLAN service"
-    fabric:
-      L1:
-        vlan: 101
-        interfaces:
-          - name: "eth4"
-            description: H5
-      L3:
-        vlan: 100
-        interfaces:
-          - name: "eth3"
-            description: H2
+  
\ No newline at end of file