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"""This module contains Google BigQuery to MySQL operator."""

from __future__ import annotations

import warnings
from typing import Sequence

from airflow.exceptions import AirflowProviderDeprecationWarning
from import BigQueryToSqlBaseOperator
from airflow.providers.mysql.hooks.mysql import MySqlHook

[docs]class BigQueryToMySqlOperator(BigQueryToSqlBaseOperator): """ Fetch data from a BigQuery table (alternatively fetch selected columns) and insert it into a MySQL table. .. seealso:: For more information on how to use this operator, take a look at the guide: :ref:`howto/operator:BigQueryToMySqlOperator` :param mysql_table: target MySQL table, use dot notation to target a specific database. It is deprecated: use target_table_name instead. (templated) :param target_table_name: target MySQL table. It takes precedence over mysql_table. (templated) :param mysql_conn_id: Reference to :ref:`mysql connection id <howto/connection:mysql>`. """
[docs] template_fields: Sequence[str] = (*BigQueryToSqlBaseOperator.template_fields, "dataset_id", "table_id")
def __init__( self, *, mysql_table: str | None = None, target_table_name: str | None = None, mysql_conn_id: str = "mysql_default", dataset_id: str | None = None, table_id: str | None = None, **kwargs, ) -> None: if mysql_table is not None: warnings.warn( "The `mysql_table` parameter has been deprecated. Use `target_table_name` instead.", AirflowProviderDeprecationWarning, stacklevel=2, ) if target_table_name is not None: raise ValueError( f"Cannot set both arguments: mysql_table={mysql_table!r} and " f"target_table_name={target_table_name!r}." ) target_table_name = mysql_table super().__init__( target_table_name=target_table_name, dataset_id=dataset_id, table_id=table_id, **kwargs ) self.mysql_conn_id = mysql_conn_id
[docs] def get_sql_hook(self) -> MySqlHook: return MySqlHook(schema=self.database, mysql_conn_id=self.mysql_conn_id)

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