Source code for airflow.providers.amazon.aws.hooks.neptune

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from __future__ import annotations

from airflow.providers.amazon.aws.hooks.base_aws import AwsBaseHook


[docs]class NeptuneHook(AwsBaseHook):
    """
    Interact with Amazon Neptune.

    Additional arguments (such as ``aws_conn_id``) may be specified and
    are passed down to the underlying AwsBaseHook.

    .. seealso::
        - :class:`~airflow.providers.amazon.aws.hooks.base_aws.AwsBaseHook`
    """

[docs]    AVAILABLE_STATES = ["available"]
[docs]    STOPPED_STATES = ["stopped"]

    def __init__(self, *args, **kwargs):
        kwargs["client_type"] = "neptune"
        super().__init__(*args, **kwargs)

[docs]    def wait_for_cluster_availability(self, cluster_id: str, delay: int = 30, max_attempts: int = 60) -> str:
        """
        Wait for Neptune cluster to start.

        :param cluster_id: The ID of the cluster to wait for.
        :param delay: Time in seconds to delay between polls.
        :param max_attempts: Maximum number of attempts to poll for completion.
        :return: The status of the cluster.
        """
        self.get_waiter("cluster_available").wait(
            DBClusterIdentifier=cluster_id, WaiterConfig={"Delay": delay, "MaxAttempts": max_attempts}
        )

        status = self.get_cluster_status(cluster_id)
        self.log.info("Finished waiting for cluster %s. Status is now %s", cluster_id, status)

        return status

[docs]    def wait_for_cluster_stopped(self, cluster_id: str, delay: int = 30, max_attempts: int = 60) -> str:
        """
        Wait for Neptune cluster to stop.

        :param cluster_id: The ID of the cluster to wait for.
        :param delay: Time in seconds to delay between polls.
        :param max_attempts: Maximum number of attempts to poll for completion.
        :return: The status of the cluster.
        """
        self.get_waiter("cluster_stopped").wait(
            DBClusterIdentifier=cluster_id, WaiterConfig={"Delay": delay, "MaxAttempts": max_attempts}
        )

        status = self.get_cluster_status(cluster_id)
        self.log.info("Finished waiting for cluster %s. Status is now %s", cluster_id, status)

        return status

[docs]    def get_cluster_status(self, cluster_id: str) -> str:
        """
        Get the status of a Neptune cluster.

        :param cluster_id: The ID of the cluster to get the status of.
        :return: The status of the cluster.
        """
        return self.get_conn().describe_db_clusters(DBClusterIdentifier=cluster_id)["DBClusters"][0]["Status"]