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

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from __future__ import annotations

from typing import TYPE_CHECKING, Sequence

from airflow.exceptions import AirflowException
from airflow.providers.amazon.aws.hooks.glue_crawler import GlueCrawlerHook
from airflow.sensors.base import BaseSensorOperator

if TYPE_CHECKING:
    from airflow.utils.context import Context


[docs]class GlueCrawlerSensor(BaseSensorOperator): """ Waits for an AWS Glue crawler to reach any of the statuses below 'FAILED', 'CANCELLED', 'SUCCEEDED' .. seealso:: For more information on how to use this sensor, take a look at the guide: :ref:`howto/sensor:GlueCrawlerSensor` :param crawler_name: The AWS Glue crawler unique name :param aws_conn_id: aws connection to use, defaults to 'aws_default' """
[docs] template_fields: Sequence[str] = ("crawler_name",)
def __init__(self, *, crawler_name: str, aws_conn_id: str = "aws_default", **kwargs) -> None: super().__init__(**kwargs) self.crawler_name = crawler_name self.aws_conn_id = aws_conn_id self.success_statuses = "SUCCEEDED" self.errored_statuses = ("FAILED", "CANCELLED") self.hook: GlueCrawlerHook | None = None
[docs] def poke(self, context: Context): hook = self.get_hook() self.log.info("Poking for AWS Glue crawler: %s", self.crawler_name) crawler_state = hook.get_crawler(self.crawler_name)["State"] if crawler_state == "READY": self.log.info("State: %s", crawler_state) crawler_status = hook.get_crawler(self.crawler_name)["LastCrawl"]["Status"] if crawler_status == self.success_statuses: self.log.info("Status: %s", crawler_status) return True else: raise AirflowException(f"Status: {crawler_status}") else: return False
[docs] def get_hook(self) -> GlueCrawlerHook: """Returns a new or pre-existing GlueCrawlerHook""" if self.hook: return self.hook self.hook = GlueCrawlerHook(aws_conn_id=self.aws_conn_id) return self.hook

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