Enabling a Resource to Publish to a Queue in Amazon SQS

The following example enables the resource with the ARN my-resource-arn to publish to the queue with the ARN my-queue-arn and URL my-queue-url in the us-west-2 region.

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

sqs = Aws::SQS::Client.new(region: 'us-west-2')

policy  = '{
  "Version":"2008-10-17",
  "Id":' + my-queue-arn + '/SQSDefaultPolicy",
  "Statement":[{
    "Sid":"__default_statement_ID",
    "Effect":"Allow",
    "Principal":{
      "AWS":"*"
    },
    "Action":["SQS:SendMessage"],
    "Resource":"' + my-queue-arn + '",
    "Condition":{
      "ArnEquals":{
        "AWS:SourceArn":"' + my-resource-arn + '"}
     }
  }]
}'

sqs.set_queue_attributes({
  queue_url: my-queue-url,
  attributes: {
    Policy: policy
  }
})