Added get_service_name

filter_plugins/get_service_name.py

@@ -0,0 +1,25 @@
+# filter_plugins/get_service_name.py
+"""
+Custom Ansible filter to build a systemctl unit name (always lowercase).
+
+Rules:
+- If `systemctl_id` ends with '@': drop the '@' and return
+  "{systemctl_id_without_at}.{software_name}@.{suffix}".
+- Else: return "{systemctl_id}{software_name}.{suffix}".
+"""
+
+def get_service_name(systemctl_id, software_name, suffix="service"):
+    sid = str(systemctl_id).strip().lower()
+    sw  = str(software_name).strip().lower()
+    sfx = str(suffix).strip().lower()
+
+    if sid.endswith('@'):
+        base = sid[:-1]  # drop the trailing '@'
+        return f"{base}.{sw}@.{sfx}"
+    else:
+        return f"{sid}{sw}.{sfx}"
+
+
+class FilterModule(object):
+    def filters(self):
+        return {"get_service_name": get_service_name}