Function lambda_handler

src/personalization_api_function/main.py:600–644

Main function entry point that delegates to request router

(event, context)

@tracer.capture_lambda_handler(capture_response=False)
@metrics.log_metrics(capture_cold_start_metric=True)
def lambda_handler(event, context):
    """ Main function entry point that delegates to request router """
    try:
        return app.resolve(event, context)
    except PersonalizationError as e:
        logger.exception(e)
        return {
            'statusCode': e.status_code,
            'headers': {
                "Content-Type" : "application/json"
            },
            'body': json.dumps({
                'type': e.type,
                'code': e.error_code,
                'message': e.error_message
            })
        }
    except botocore.exceptions.ParamValidationError as e:
        logger.exception(e)
        return {
            'statusCode': HTTPStatus.BAD_REQUEST,
            'headers': {
                "Content-Type" : "application/json"
            },
            'body': json.dumps({
                'type': 'Validation',
                'code': 'ValidationError',
                'message': str(e)
            })
        }
    except Exception as e:
        logger.exception(e)
        formatted_lines = traceback.format_exc().splitlines()
        return {
            'statusCode': HTTPStatus.INTERNAL_SERVER_ERROR,
            'headers': {
                "Content-Type" : "application/json"
            },
            'body': json.dumps({
                'type': 'Unhandled',
                'code': 'InternalError',
                'message': str(e),
                'details': formatted_lines
            }, indent = 2)
        }