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"""This module contains Google Cloud SQL triggers."""
from __future__ import annotations

import asyncio
from typing import Sequence

from import CloudSQLAsyncHook, CloudSqlOperationStatus
from airflow.triggers.base import BaseTrigger, TriggerEvent

[docs]class CloudSQLExportTrigger(BaseTrigger): """ Trigger that periodically polls information from Cloud SQL API to verify job status. Implementation leverages asynchronous transport. """ def __init__( self, operation_name: str, project_id: str | None = None, gcp_conn_id: str = "google_cloud_default", impersonation_chain: str | Sequence[str] | None = None, poke_interval: int = 20, ): super().__init__() self.gcp_conn_id = gcp_conn_id self.impersonation_chain = impersonation_chain self.operation_name = operation_name self.project_id = project_id self.poke_interval = poke_interval self.hook = CloudSQLAsyncHook( gcp_conn_id=self.gcp_conn_id, impersonation_chain=self.impersonation_chain, )
[docs] def serialize(self): return ( "", { "operation_name": self.operation_name, "project_id": self.project_id, "gcp_conn_id": self.gcp_conn_id, "impersonation_chain": self.impersonation_chain, "poke_interval": self.poke_interval, }, )
[docs] async def run(self): try: while True: operation = await self.hook.get_operation( project_id=self.project_id, operation_name=self.operation_name ) if operation["status"] == CloudSqlOperationStatus.DONE: if "error" in operation: yield TriggerEvent( { "operation_name": operation["name"], "status": "error", "message": operation["error"]["message"], } ) return yield TriggerEvent( { "operation_name": operation["name"], "status": "success", } ) return else: "Operation status is %s, sleeping for %s seconds.", operation["status"], self.poke_interval, ) await asyncio.sleep(self.poke_interval) except Exception as e: self.log.exception("Exception occurred while checking operation status.") yield TriggerEvent( { "status": "failed", "message": str(e), } )

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