Added application ids filter for easier partial deployment

filter_plugins/application_allowed.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+
+# Provides a filter to control which applications (roles) should be deployed
+
+from ansible.errors import AnsibleFilterError
+
+
+def application_allowed(application_id: str, group_names: list, allowed_applications: list = []):
+    """
+    Return True if:
+      - application_id exists in group_names, AND
+      - either allowed_applications is not provided (or empty), OR application_id is in allowed_applications.
+
+    Parameters:
+      application_id (str): Name of the application/role to check.
+      group_names (list): List of groups the current host belongs to.
+      allowed_applications (list, optional): List of application IDs to allow.
+
+    Returns:
+      bool: True if this application is allowed to deploy, False otherwise.
+    """
+    # Ensure group_names is iterable
+    if not isinstance(group_names, (list, tuple)):
+        raise AnsibleFilterError(f"Expected group_names to be a list or tuple, got {type(group_names)}")
+
+    # Must be part of the host's groups
+    if application_id not in group_names:
+        return False
+
+    # If allowed_applications provided, only allow if ID is in that list
+    if allowed_applications:
+        if not isinstance(allowed_applications, (list, tuple)):
+            raise AnsibleFilterError(f"allowed_applications must be a list or tuple if provided, got {type(allowed_applications)}")
+        return application_id in allowed_applications
+
+    # No filter provided → allow all in group_names
+    return True
+
+
+class FilterModule(object):
+    def filters(self):
+        return {
+            'application_allowed': application_allowed,
+        }