text: #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  from typing import TYPE_CHECKING, Optional, Sequence
  
  from airflow.models import BaseOperator
  from airflow.providers.mysql.hooks.mysql import MySqlHook
  from airflow.providers.presto.hooks.presto import PrestoHook
  
  if TYPE_CHECKING:
      from airflow.utils.context import Context
  
  
  class PrestoToMySqlOperator(BaseOperator):
      """
      Moves data from Presto to MySQL, note that for now the data is loaded
      into memory before being pushed to MySQL, so this operator should
      be used for smallish amount of data.
  
      :param sql: SQL query to execute against Presto. (templated)
      :type sql: str
      :param mysql_table: target MySQL table, use dot notation to target a
          specific database. (templated)
      :type mysql_table: str
      :param mysql_conn_id: Reference to :ref:`mysql connection id <howto/connection:mysql>`.
      :type mysql_conn_id: str
      :param presto_conn_id: source presto connection
      :type presto_conn_id: str
      :param mysql_preoperator: sql statement to run against mysql prior to
          import, typically use to truncate of delete in place
          of the data coming in, allowing the task to be idempotent (running
          the task twice won't double load data). (templated)
      :type mysql_preoperator: str
      """
  
      template_fields: Sequence[str] = ('sql', 'mysql_table', 'mysql_preoperator')
      template_ext: Sequence[str] = ('.sql',)
      template_fields_renderers = {"sql": "sql", "mysql_preoperator": "sql"}
      ui_color = '#a0e08c'
  
      def __init__(
          self,
          *,
          sql: str,
          mysql_table: str,
          presto_conn_id: str = 'presto_default',
          mysql_conn_id: str = 'mysql_default',
          mysql_preoperator: Optional[str] = None,
          **kwargs,
      ) -> None:
          super().__init__(**kwargs)
          self.sql = sql
          self.mysql_table = mysql_table
          self.mysql_conn_id = mysql_conn_id
          self.mysql_preoperator = mysql_preoperator
          self.presto_conn_id = presto_conn_id
  
      def execute(self, context: 'Context') -> None:
          presto = PrestoHook(presto_conn_id=self.presto_conn_id)
          self.log.info("Extracting data from Presto: %s", self.sql)
          results = presto.get_records(self.sql)
  
          mysql = MySqlHook(mysql_conn_id=self.mysql_conn_id)
          if self.mysql_preoperator:
              self.log.info("Running MySQL preoperator")
              self.log.info(self.mysql_preoperator)
              mysql.run(self.mysql_preoperator)
  
          self.log.info("Inserting rows into MySQL")
          mysql.insert_rows(table=self.mysql_table, rows=results)
  