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

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from typing import Any, Optional

try:
    from functools import cached_property
except ImportError:
    from cached_property import cached_property

from airflow.exceptions import AirflowException
from airflow.providers.amazon.aws.hooks.emr_containers import EMRContainerHook
from airflow.sensors.base import BaseSensorOperator


[docs]class EMRContainerSensor(BaseSensorOperator): """ Asks for the state of the job run until it reaches a failure state or success state. If the job run fails, the task will fail. :param job_id: job_id to check the state of :type job_id: str :param max_retries: Number of times to poll for query state before returning the current state, defaults to None :type max_retries: int :param aws_conn_id: aws connection to use, defaults to 'aws_default' :type aws_conn_id: str :param poll_interval: Time in seconds to wait between two consecutive call to check query status on athena, defaults to 10 :type poll_interval: int """
[docs] INTERMEDIATE_STATES = ( "PENDING", "SUBMITTED", "RUNNING",
)
[docs] FAILURE_STATES = ( "FAILED", "CANCELLED", "CANCEL_PENDING",
)
[docs] SUCCESS_STATES = ("COMPLETED",)
[docs] template_fields = ['virtual_cluster_id', 'job_id']
[docs] template_ext = ()
[docs] ui_color = '#66c3ff'
def __init__( self, *, virtual_cluster_id: str, job_id: str, max_retries: Optional[int] = None, aws_conn_id: str = 'aws_default', poll_interval: int = 10, **kwargs: Any, ) -> None: super().__init__(**kwargs) self.aws_conn_id = aws_conn_id self.virtual_cluster_id = virtual_cluster_id self.job_id = job_id self.poll_interval = poll_interval self.max_retries = max_retries
[docs] def poke(self, context: dict) -> bool: state = self.hook.poll_query_status(self.job_id, self.max_retries, self.poll_interval) if state in self.FAILURE_STATES: raise AirflowException('EMR Containers sensor failed') if state in self.INTERMEDIATE_STATES: return False return True
@cached_property
[docs] def hook(self) -> EMRContainerHook: """Create and return an EMRContainerHook""" return EMRContainerHook(self.aws_conn_id, virtual_cluster_id=self.virtual_cluster_id)

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