airflow.providers.amazon.aws.triggers.ec2

Module Contents

Classes

EC2StateSensorTrigger

Trigger for EC2StateSensor. The Trigger polls the EC2 instance, and yields a TriggerEvent once
class airflow.providers.amazon.aws.triggers.ec2.EC2StateSensorTrigger(instance_id, target_state, aws_conn_id='aws_default', region_name=None, poll_interval=60)[source]

Bases: airflow.triggers.base.BaseTrigger

Trigger for EC2StateSensor. The Trigger polls the EC2 instance, and yields a TriggerEvent once the state of the instance matches the target_state.

Parameters

  • instance_id (str) – id of the AWS EC2 instance

  • target_state (str) – target state of instance

  • aws_conn_id (str) – aws connection to use

  • region_name (str | None) – (optional) aws region name associated with the client

  • poll_interval (int) – number of seconds to wait before attempting the next poll

serialize()[source]

Returns the information needed to reconstruct this Trigger.

Returns

Tuple of (class path, keyword arguments needed to re-instantiate).

Return type

tuple[str, dict[str, Any]]

hook()[source]
async run()[source]

Runs the trigger in an asynchronous context.

The trigger should yield an Event whenever it wants to fire off an event, and return None if it is finished. Single-event triggers should thus yield and then immediately return.

If it yields, it is likely that it will be resumed very quickly, but it may not be (e.g. if the workload is being moved to another triggerer process, or a multi-event trigger was being used for a single-event task defer).

In either case, Trigger classes should assume they will be persisted, and then rely on cleanup() being called when they are no longer needed.

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