Added backup value key mapper

roles/sys-bkp-docker-2-loc/filter_plugins/find_dock_val_by_bkp_entr.py

@@ -0,0 +1,37 @@
+from ansible.errors import AnsibleFilterError
+
+def find_dock_val_by_bkp_entr(applications, search_string, mapped_entry):
+    """
+    Iterates over all applications and their docker.services, finds services where
+    .backup[search_string] exists (and is truthy), and returns the value of
+    .[mapped_entry] for each.
+
+    :param applications: dict of applications
+    :param search_string: string, the backup subkey to search for (e.g., "enabled")
+    :param mapped_entry: string, the key to return from the service (e.g., "name")
+    :return: list of mapped_entry values
+    """
+    if not isinstance(applications, dict):
+        raise AnsibleFilterError("applications must be a dict")
+
+    results = []
+
+    for app in applications.values():
+        docker = app.get("docker", {})
+        services = docker.get("services", {})
+        if not isinstance(services, dict):
+            continue
+        for svc in services.values():
+            backup = svc.get("backup", {})
+            # only match if .backup[search_string] is set and truthy
+            if isinstance(backup, dict) and backup.get(search_string):
+                mapped_value = svc.get(mapped_entry)
+                if mapped_value is not None:
+                    results.append(mapped_value)
+    return results
+
+class FilterModule(object):
+    def filters(self):
+        return {
+            'find_dock_val_by_bkp_entr': find_dock_val_by_bkp_entr,
+        }