airflow sns 源码
airflow sns 代码
文件路径：/airflow/providers/amazon/aws/operators/sns.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
"""Publish message to SNS queue"""
from typing import TYPE_CHECKING, Sequence
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.sns import SnsHook
if TYPE_CHECKING:
from airflow.utils.context import Context
class SnsPublishOperator(BaseOperator):
"""
Publish a message to Amazon SNS.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:SnsPublishOperator`
:param aws_conn_id: aws connection to use
:param target_arn: either a TopicArn or an EndpointArn
:param message: the default message you want to send (templated)
:param subject: the message subject you want to send (templated)
:param message_attributes: the message attributes you want to send as a flat dict (data type will be
determined automatically)
"""
template_fields: Sequence[str] = ('target_arn', 'message', 'subject', 'message_attributes', 'aws_conn_id')
template_ext: Sequence[str] = ()
template_fields_renderers = {"message_attributes": "json"}
def __init__(
self,
*,
target_arn: str,
message: str,
subject: str | None = None,
message_attributes: dict | None = None,
aws_conn_id: str = 'aws_default',
**kwargs,
):
super().__init__(**kwargs)
self.target_arn = target_arn
self.message = message
self.subject = subject
self.message_attributes = message_attributes
self.aws_conn_id = aws_conn_id
def execute(self, context: Context):
sns = SnsHook(aws_conn_id=self.aws_conn_id)
self.log.info(
'Sending SNS notification to %s using %s:\nsubject=%s\nattributes=%s\nmessage=%s',
self.target_arn,
self.aws_conn_id,
self.subject,
self.message_attributes,
self.message,
)
return sns.publish_to_target(
target_arn=self.target_arn,
message=self.message,
subject=self.subject,
message_attributes=self.message_attributes,
)
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