airflow s3_to_ftp 源码
airflow s3_to_ftp 代码
文件路径：/airflow/providers/amazon/aws/transfers/s3_to_ftp.py
#
# 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
from tempfile import NamedTemporaryFile
from typing import TYPE_CHECKING, Sequence
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.s3 import S3Hook
from airflow.providers.ftp.hooks.ftp import FTPHook
if TYPE_CHECKING:
from airflow.utils.context import Context
class S3ToFTPOperator(BaseOperator):
"""
This operator enables the transferring of files from S3 to a FTP server.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:S3ToFTPOperator`
:param s3_bucket: The targeted s3 bucket. This is the S3 bucket from
where the file is downloaded.
:param s3_key: The targeted s3 key. This is the specified file path for
downloading the file from S3.
:param ftp_path: The ftp remote path. This is the specified file path for
uploading file to the FTP server.
:param aws_conn_id: reference to a specific AWS connection
:param ftp_conn_id: The ftp connection id. The name or identifier for
establishing a connection to the FTP server.
"""
template_fields: Sequence[str] = ('s3_bucket', 's3_key', 'ftp_path')
def __init__(
self,
*,
s3_bucket,
s3_key,
ftp_path,
aws_conn_id='aws_default',
ftp_conn_id='ftp_default',
**kwargs,
) -> None:
super().__init__(**kwargs)
self.s3_bucket = s3_bucket
self.s3_key = s3_key
self.ftp_path = ftp_path
self.aws_conn_id = aws_conn_id
self.ftp_conn_id = ftp_conn_id
def execute(self, context: Context):
s3_hook = S3Hook(self.aws_conn_id)
ftp_hook = FTPHook(ftp_conn_id=self.ftp_conn_id)
s3_obj = s3_hook.get_key(self.s3_key, self.s3_bucket)
with NamedTemporaryFile() as local_tmp_file:
self.log.info('Downloading file from %s', self.s3_key)
s3_obj.download_fileobj(local_tmp_file)
local_tmp_file.seek(0)
ftp_hook.store_file(self.ftp_path, local_tmp_file.name)
self.log.info('File stored in %s', {self.ftp_path})
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