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

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from __future__ import annotations

from typing import TYPE_CHECKING, Sequence

from deprecated import deprecated

from airflow.compat.functools import cached_property
from airflow.providers.amazon.aws.hooks.redshift_cluster import RedshiftHook
from airflow.sensors.base import BaseSensorOperator

if TYPE_CHECKING:
    from airflow.utils.context import Context


[docs]class RedshiftClusterSensor(BaseSensorOperator):
    """
    Waits for a Redshift cluster to reach a specific status.

    .. seealso::
        For more information on how to use this sensor, take a look at the guide:
        :ref:`howto/sensor:RedshiftClusterSensor`

    :param cluster_identifier: The identifier for the cluster being pinged.
    :param target_status: The cluster status desired.
    """

[docs]    template_fields: Sequence[str] = ("cluster_identifier", "target_status")

    def __init__(
        self,
        *,
        cluster_identifier: str,
        target_status: str = "available",
        aws_conn_id: str = "aws_default",
        **kwargs,
    ):
        super().__init__(**kwargs)
        self.cluster_identifier = cluster_identifier
        self.target_status = target_status
        self.aws_conn_id = aws_conn_id

[docs]    def poke(self, context: Context):
        current_status = self.hook.cluster_status(self.cluster_identifier)
        self.log.info(
            "Poked cluster %s for status '%s', found status '%s'",
            self.cluster_identifier,
            self.target_status,
            current_status,
        )
        return current_status == self.target_status

    @deprecated(reason="use `hook` property instead.")
[docs]    def get_hook(self) -> RedshiftHook:
        """Create and return a RedshiftHook"""
        return self.hook

    @cached_property
[docs]    def hook(self) -> RedshiftHook:
        return RedshiftHook(aws_conn_id=self.aws_conn_id)