Source code for

# 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
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

"""This module contains AWS SNS hook"""
import json
import warnings
from typing import Dict, Optional, Union

from import AwsBaseHook

def _get_message_attribute(o):
    if isinstance(o, bytes):
        return {'DataType': 'Binary', 'BinaryValue': o}
    if isinstance(o, str):
        return {'DataType': 'String', 'StringValue': o}
    if isinstance(o, (int, float)):
        return {'DataType': 'Number', 'StringValue': str(o)}
    if hasattr(o, '__iter__'):
        return {'DataType': 'String.Array', 'StringValue': json.dumps(o)}
    raise TypeError(
        f'Values in MessageAttributes must be one of bytes, str, int, float, or iterable; got {type(o)}'

[docs]class SnsHook(AwsBaseHook): """ Interact with Amazon Simple Notification Service. Additional arguments (such as ``aws_conn_id``) may be specified and are passed down to the underlying AwsBaseHook. .. seealso:: :class:`` """ def __init__(self, *args, **kwargs): super().__init__(client_type='sns', *args, **kwargs)
[docs] def publish_to_target( self, target_arn: str, message: str, subject: Optional[str] = None, message_attributes: Optional[dict] = None, ): """ Publish a message to a topic or an endpoint. :param target_arn: either a TopicArn or an EndpointArn :param message: the default message you want to send :param message: str :param subject: subject of message :param message_attributes: additional attributes to publish for message filtering. This should be a flat dict; the DataType to be sent depends on the type of the value: - bytes = Binary - str = String - int, float = Number - iterable = String.Array """ publish_kwargs: Dict[str, Union[str, dict]] = { 'TargetArn': target_arn, 'MessageStructure': 'json', 'Message': json.dumps({'default': message}), } # Construct args this way because boto3 distinguishes from missing args and those set to None if subject: publish_kwargs['Subject'] = subject if message_attributes: publish_kwargs['MessageAttributes'] = { key: _get_message_attribute(val) for key, val in message_attributes.items() } return self.get_conn().publish(**publish_kwargs)
[docs]class AwsSnsHook(SnsHook): """ This hook is deprecated. Please use :class:``. """ def __init__(self, *args, **kwargs): warnings.warn( "This hook is deprecated. Please use :class:``.", DeprecationWarning, stacklevel=2, ) super().__init__(*args, **kwargs)

Was this entry helpful?