Source code for airflow.providers.amazon.aws.sensors.ec2_instance_state

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from typing import Optional

from airflow.providers.amazon.aws.hooks.ec2 import EC2Hook
from airflow.sensors.base import BaseSensorOperator
from airflow.utils.decorators import apply_defaults


[docs]class EC2InstanceStateSensor(BaseSensorOperator): """ Check the state of the AWS EC2 instance until state of the instance become equal to the target state. :param target_state: target state of instance :type target_state: str :param instance_id: id of the AWS EC2 instance :type instance_id: str :param region_name: (optional) aws region name associated with the client :type region_name: Optional[str] """
[docs] template_fields = ("target_state", "instance_id", "region_name")
[docs] ui_color = "#cc8811"
[docs] ui_fgcolor = "#ffffff"
[docs] valid_states = ["running", "stopped", "terminated"]
@apply_defaults def __init__( self, *, target_state: str, instance_id: str, aws_conn_id: str = "aws_default", region_name: Optional[str] = None, **kwargs, ): if target_state not in self.valid_states: raise ValueError(f"Invalid target_state: {target_state}") super().__init__(**kwargs) self.target_state = target_state self.instance_id = instance_id self.aws_conn_id = aws_conn_id self.region_name = region_name
[docs] def poke(self, context): ec2_hook = EC2Hook(aws_conn_id=self.aws_conn_id, region_name=self.region_name) instance_state = ec2_hook.get_instance_state(instance_id=self.instance_id) self.log.info("instance state: %s", instance_state) return instance_state == self.target_state

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