Source code for airflow.providers.mysql.transfers.s3_to_mysql

# 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 __future__ import annotations

import os
from typing import TYPE_CHECKING, Sequence

from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.s3 import S3Hook
from airflow.providers.mysql.hooks.mysql import MySqlHook

if TYPE_CHECKING:
    from airflow.utils.context import Context


[docs]class S3ToMySqlOperator(BaseOperator): """ Loads a file from S3 into a MySQL table. :param s3_source_key: The path to the file (S3 key) that will be loaded into MySQL. :param mysql_table: The MySQL table into where the data will be sent. :param mysql_duplicate_key_handling: Specify what should happen to duplicate data. You can choose either `IGNORE` or `REPLACE`. .. seealso:: https://dev.mysql.com/doc/refman/8.0/en/load-data.html#load-data-duplicate-key-handling :param mysql_extra_options: MySQL options to specify exactly how to load the data. :param aws_conn_id: The S3 connection that contains the credentials to the S3 Bucket. :param mysql_conn_id: Reference to :ref:`mysql connection id <howto/connection:mysql>`. :param mysql_local_infile: flag to enable local_infile option on the MySQLHook. This loads MySQL directly using the LOAD DATA LOCAL INFILE command. Defaults to False. """
[docs] template_fields: Sequence[str] = ( "s3_source_key", "mysql_table", )
[docs] template_ext: Sequence[str] = ()
[docs] ui_color = "#f4a460"
def __init__( self, *, s3_source_key: str, mysql_table: str, mysql_duplicate_key_handling: str = "IGNORE", mysql_extra_options: str | None = None, aws_conn_id: str | None = "aws_default", mysql_conn_id: str = "mysql_default", mysql_local_infile: bool = False, **kwargs, ) -> None: super().__init__(**kwargs) self.s3_source_key = s3_source_key self.mysql_table = mysql_table self.mysql_duplicate_key_handling = mysql_duplicate_key_handling self.mysql_extra_options = mysql_extra_options or "" self.aws_conn_id = aws_conn_id self.mysql_conn_id = mysql_conn_id self.mysql_local_infile = mysql_local_infile
[docs] def execute(self, context: Context) -> None: """ Execute the transfer operation from S3 to MySQL. :param context: The context that is being provided when executing. """ self.log.info("Loading %s to MySql table %s...", self.s3_source_key, self.mysql_table) s3_hook = S3Hook(aws_conn_id=self.aws_conn_id) file = s3_hook.download_file(key=self.s3_source_key) try: mysql = MySqlHook(mysql_conn_id=self.mysql_conn_id, local_infile=self.mysql_local_infile) mysql.bulk_load_custom( table=self.mysql_table, tmp_file=file, duplicate_key_handling=self.mysql_duplicate_key_handling, extra_options=self.mysql_extra_options, ) finally: # Remove file downloaded from s3 to be idempotent. os.remove(file)

Was this entry helpful?