Creating a Subscription in an Amazon SNS Topic - Amazon SDK for Ruby
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Creating a Subscription in an Amazon SNS Topic

The following example creates a subscription for the topic with the ARN arn:aws:sns:us-west-2:123456789:MyGroovyTopic for a user who has the email address MyGroovyUser@MyGroovy.com in the us-west-2 region, and displays the resulting ARN. Initially the ARN value is pending confirmation. When the user confirms their email address, this value becomes a true ARN.

# Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# This file is licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License. A copy of the
# License is located at
#
# http://aws.amazon.com/apache2.0/
#
# This file 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.

require 'aws-sdk-sns'  # v2: require 'aws-sdk'

sns = Aws::SNS::Resource.new(region: 'us-west-2')

topic = sns.topic('arn:aws:sns:us-west-2:123456789:MyGroovyTopic')

sub = topic.subscribe({
  protocol: 'email',
  endpoint: 'MyGroovyUser@MyGroovy.com'
})

puts sub.arn