Basic Delete Policy By Name Example

This sample creates a Cisco Adaptive Network Control (ANC) policy.

Prerequisites

• The samples configuration step has been completed (see Samples Configuration).

• The DXL fabric to which the client will connect has been bridged to Cisco pxGrid.

• The Python client has been authorized to perform DXL Cisco pxGrid Queries (see Authorize Client to Use Cisco pxGrid via DXL).

• A policy has been created and is to be deleted (see Basic Create Policy Example)

Running

To run this sample execute the sample/basic/basic_anc_delete_policy_by_name.py script as follows:

python sample/basic/basic_anc_delete_policy_by_name.py

Output if the delete was successful should be:

{
    "200": "no content"
}

Otherwise:

{
    "204": "no content"
}

which indicates that the policy was not found and therefore not deleted.

Details

The majority of the sample code is shown below:

with DxlClient(config) as dxl_client:

    # Connect to the fabric
    dxl_client.connect()

    logger.info("Connected to DXL fabric.")

    # Create client wrapper
    client = CiscoPxGridClient(dxl_client)

    try:
        # Invoke 'delete policy by name' method on service
        resp_dict = client.anc.delete_policy_by_name("ANC_Shut_2")

        # Print out the response (convert dictionary to JSON for pretty
        # printing)
        print("Response:\n{0}".format(
            MessageUtils.dict_to_json(resp_dict, pretty_print=True)))
    except Exception as ex:
        print(str(ex))

Once a connection is established to the DXL fabric, a dxlciscopxgridclient.client.CiscoPxGridClient instance is created which will be used to communicate with Cisco pxGrid.

Next, the dxlciscopxgridclient.client.AncClientCategory.delete_policy_by_name() method is invoked with the MAC address of the endpoint for which to clear the policy.

The final step is to display the contents of the returned dictionary (dict) which contains 204 - no content.