Add a startup script to automate cabling process (#42)

* 📌 Update cacheops, filter, and Django consumption

* add cabling script

* clean up

* fix typo

* fix typo

* fix typo

* add cable initializer

* set to false by default

Co-authored-by: KylerBurke <Kontazler@gmail.com>

docker/initializers/cables.yml

@@ -0,0 +1 @@
+cable_interfaces: false

docker/startup_scripts/270_cables.py

@@ -0,0 +1,50 @@
+"""
+    Automate cabling process so that all Customer Network Locker's 1-2 interfaces go to Access Switch's EFR1, and 3-4 ones go to EFR2.
+    This script should only be run once and in dev environment. Mostly used for integration testing purposes.
+"""
+
+from dcim.models import Cable
+
+from ruamel.yaml import YAML
+from pathlib import Path
+
+import sys
+
+
+def get_devices(role):
+    from dcim.models import Device, DeviceRole
+
+    return Device.objects.all().filter(device_role=DeviceRole.objects.get(slug=role).id)
+
+
+file = Path('/opt/netbox/initializers/cables.yml')
+if not file.is_file():
+    sys.exit()
+
+with file.open('r') as stream:
+    yaml = YAML(typ='safe')
+    config = yaml.load(stream)
+
+    if config.get('cable_interfaces'):
+        lockers = get_devices('customer-network-locker')
+        switches = get_devices('access-switch')
+
+        i = 0
+        for locker in lockers:
+            # break if i is larger than switch interface's size.
+            if i > len(switches[0].vc_interfaces)-1:
+                break
+
+            i12 = locker.vc_interfaces[0]
+            i34 = locker.vc_interfaces[1]
+
+            efr1 = switches[0].vc_interfaces[i]
+            efr2 = switches[1].vc_interfaces[i]
+
+            c1 = Cable.objects.create(termination_a=i12, termination_b=efr1)
+            print('🔌 Created cable for {} and {}'.format(i12.name, efr1.name))
+
+            c2 = Cable.objects.create(termination_a=i34, termination_b=efr2)
+            print('🔌 Created cable for {} and {}'.format(i34.name, efr2.name))
+
+            i += 1