Source code for airflow.providers.amazon.aws.triggers.step_function

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from __future__ import annotations

from airflow.providers.amazon.aws.hooks.base_aws import AwsGenericHook
from airflow.providers.amazon.aws.hooks.step_function import StepFunctionHook
from airflow.providers.amazon.aws.triggers.base import AwsBaseWaiterTrigger


[docs]class StepFunctionsExecutionCompleteTrigger(AwsBaseWaiterTrigger):
    """
    Trigger to poll for the completion of a Step Functions execution.

    :param execution_arn: ARN of the state machine to poll
    :param waiter_delay: The amount of time in seconds to wait between attempts.
    :param waiter_max_attempts: The maximum number of attempts to be made.
    :param aws_conn_id: The Airflow connection used for AWS credentials.
    """

    def __init__(
        self,
        *,
        execution_arn: str,
        waiter_delay: int = 60,
        waiter_max_attempts: int = 30,
        aws_conn_id: str | None = None,
        region_name: str | None = None,
    ) -> None:

        super().__init__(
            serialized_fields={"execution_arn": execution_arn, "region_name": region_name},
            waiter_name="step_function_succeeded",
            waiter_args={"executionArn": execution_arn},
            failure_message="Step function failed",
            status_message="Status of step function execution is",
            status_queries=["status", "error", "cause"],
            return_key="execution_arn",
            return_value=execution_arn,
            waiter_delay=waiter_delay,
            waiter_max_attempts=waiter_max_attempts,
            aws_conn_id=aws_conn_id,
        )

[docs]    def hook(self) -> AwsGenericHook:
        return StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)