def delete_iot_thing()

in utils/ci_iot_thing.py [0:0]

• 33 lines of code
• 8 McCabe index (conditional complexity)

def delete_iot_thing(thing_name, region):
    """ Delete IoT thing and all its principals. """

    try:
        iot_client = boto3.client('iot', region_name=region)
    except Exception as e:
        print(f"ERROR: Could not make Boto3 client. Credentials likely could not be sourced", file=sys.stderr)
        raise

    cert_ids = []

    # Detach and delete thing's principals.
    try:
        thing_principals = iot_client.list_thing_principals(thingName=thing_name)
        print(f"Detaching and deleting principals: {thing_principals}", file=sys.stderr)
        for principal in thing_principals["principals"]:
            certificate_id = principal.split("/")[1]
            iot_client.detach_thing_principal(thingName=thing_name, principal=principal)
            iot_client.update_certificate(certificateId=certificate_id, newStatus='INACTIVE')
            cert_ids.append(certificate_id)
    except Exception:
        print("ERROR: Could not detatch principal or set its certificate to INACTIVE for {thing_name}, probably thing does not exist",
              file=sys.stderr)
        raise

    # Wait for thing to be free of principals
    ThingDetachedWaiter(iot_client, timeout=10).wait(thing_name)

    # Delete all the certificates
    for cert in cert_ids:
        try:
            iot_client.delete_certificate(certificateId=cert, forceDelete=True)
        except Exception:
            print("ERROR: Could not delete certificate for IoT thing {thing_name}.",
              file=sys.stderr)
            raise

    # Delete thing.
    try:
        iot_client.delete_thing(thingName=thing_name)
    except Exception:
        raise

    print("IoT thing deleted successfully", file=sys.stderr)

    return 0