def lambda_handler()

in source/lambda/sfn-iot-mr-thing-type-crud/lambda_function.py [0:0]
35 lines of code
13 McCabe index (conditional complexity)

def lambda_handler(event, context):
    logger.info('event: {}'.format(event))
    try:
        c_iot = boto3.client('iot')

        if event['NewImage']['eventType']['S'] == 'THING_TYPE_EVENT':
            if event['NewImage']['operation']['S'] == 'CREATED':
                thing_type_name = event['NewImage']['thingTypeName']['S']
                logger.info("thing_type_name: {}".format(thing_type_name))
                create_thing_type(c_iot, thing_type_name)

            elif event['NewImage']['operation']['S'] == 'UPDATED':
                if 'isDeprecated' in event['NewImage'] and event['NewImage']['isDeprecated']['BOOL'] is True:
                    thing_type_name = event['NewImage']['thingTypeName']['S']
                    deprecate_type(c_iot, thing_type_name, False)

                elif 'isDeprecated' in event['NewImage'] and event['NewImage']['isDeprecated']['BOOL'] is False:
                    thing_type_name = event['NewImage']['thingTypeName']['S']
                    deprecate_type(c_iot, thing_type_name, True)

            elif event['NewImage']['operation']['S'] == 'DELETED':
                thing_type_name = event['NewImage']['thingTypeName']['S']
                logger.info("thing_type_name: {}".format(thing_type_name))
                delete_type(c_iot, thing_type_name)

        elif event['NewImage']['eventType']['S'] == 'THING_TYPE_ASSOCIATION_EVENT':
            if event['NewImage']['operation']['S'] == 'ADDED':
                thing_name = event['NewImage']['thingName']['S']
                thing_type_name = event['NewImage']['thingTypeName']['S']
                logger.info("ADDED: thing_name: {} thing_type_name: {}".format(thing_name, thing_type_name))
                update_thing_type(c_iot, thing_name, thing_type_name)

            elif event['NewImage']['operation']['S'] == 'REMOVED':
                thing_name = event['NewImage']['thingName']['S']
                thing_type_name = event['NewImage']['thingTypeName']['S']
                logger.info("REMOVED: thing_name: {} thing_type_name: {}".format(thing_name, thing_type_name))
                update_thing_type(c_iot, thing_name, None)

    except Exception as e:
        logger.error(e)
        raise ThingTypeCrudException('{}'.format(e))

    return {"message": "success"}