add aggregate_prefixes writen by Hakan Salim with a tiny changes

geant/gap_ansible/plugins/modules/geant_aggregate_prefixes.py

+#!/usr/bin/python
+
+# (c) 2024, GEANT Orchestration and Automation Team
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from ansible.module_utils.basic import AnsibleModule
+from aggregate_prefixes import aggregate_prefixes
+
+DOCUMENTATION = """
+module: geant_aggregate_prefixes
+author:
+- GEANT Orchestration and Automation Team (@GEANT)
+short_description: Aggregate IP prefixes into the minimal set of CIDR blocks
+description:
+- This module takes a list of IP prefixes and aggregates them into the minimal set of CIDR blocks.
+- It is useful for summarizing routes or reducing the size of prefix lists.
+version_added: 1.0.0
+options:
+  prefixes:
+    description:
+    - A list of IP prefixes to be aggregated.
+    - Each prefix should be a valid CIDR block (e.g., 192.0.2.0/32).
+    type: list
+    elements: str
+    required: true
+notes:
+- This module requires the Python `aggregate-prefixes` library to be installed on the control node.
+requirements:
+- aggregate-prefixes
+"""
+
+EXAMPLES = """
+# Aggregate a list of prefixes
+- name: Aggregate IP prefixes
+  hosts: localhost
+  tasks:
+    - name: Aggregate a list of prefixes
+      geant_aggregate_prefixes:
+        prefixes:
+          - "192.0.2.0/32"
+          - "192.0.2.1/32"
+          - "192.0.2.2/32"
+      register: result
+
+    - name: Display aggregated prefixes
+      debug:
+        msg: "Aggregated prefixes: {{ result.aggregated_prefixes }}"
+"""
+
+RETURN = """
+aggregated_prefixes:
+    description: The aggregated list of prefixes in CIDR format
+    type: list
+    returned: success
+    sample: ['192.0.2.0/31', '192.0.2.2/32']
+"""
+
+
+def geant_aggregate_prefixes(prefixes):
+    """
+    Aggregates a list of IP prefixes into the minimal set of CIDR blocks.
+    Returns a tuple (success, result). On success, result is a list of strings representing the aggregated prefixes.
+    On failure, result is an error message.
+    """
+    try:
+        aggregated = list(aggregate_prefixes(prefixes))
+        aggregated_str = [str(net) for net in aggregated]
+        return True, aggregated_str
+    except Exception as e:
+        return False, f"Error during aggregation: {str(e)}"
+
+
+def main():
+    module_args = {
+        "prefixes": {"type": "list", "required": True, "elements": "str"},
+    }
+
+    module = AnsibleModule(argument_spec=module_args, supports_check_mode=False)
+    prefixes = module.params["prefixes"]
+    success, result = geant_aggregate_prefixes(prefixes)
+
+    if success:
+        module.exit_json(changed=False, aggregated_prefixes=result)
+    else:
+        module.fail_json(msg=result)
+
+
+if __name__ == "__main__":
+    main()

requirements.txt

 ncclient
 ansible
-ansible-lint
+ansible-lint
\ No newline at end of file
+aggregate-prefixes