Service module for https://github.com/ex-aws/ex_aws

The package can be installed by adding :ex_aws_sns to your list of dependencies in mix.exs along with :ex_aws and your preferred JSON codec / HTTP client:

def deps do
  [
    {:ex_aws, "~> 2.0"},
    {:ex_aws_sns, "~> 2.0"},
    {:poison, "~> 3.0"},
    {:hackney, "~> 1.9"},
  ]
end

Here is an example of sending a message to a standard topic and returning the response to the caller

    message
    |> ExAws.SNS.publish(
      topic_arn: "arn:aws:sns:us-east-1:000000000000:sns-topic-name"
    )
    |> ExAws.request()
    |> case do
      {:error, {_error_type, error_code, %{code: message}}} ->
        {:error, "Response returned with http error code #{error_code} and message #{message}"}
      {:error, {_error_type, error_code, message}} ->
        {:error, "Response returned with http error code #{error_code} and message #{message}"}
      response -> response
    end

The following code demonstrates sending a message to a FIFO topic. message_group_id defines partitions in the topic to make sure messages in that group are processed one at a time. If all messages must be processed in order use a static value for this attribute. message_deduplication_id defines an id used to determine if two events are the same and deduplicate them in the topic. Event IDs or hashes of the content are good for this.

    message
    |> ExAws.SNS.publish(
      topic_arn: "arn:aws:sns:us-east-1:000000000000:sns-topic-name.fifo",
      message_group_id: "some group which requires messages processed in order",
      message_deduplication_id: "some id to prevent the same message from being published twice"
    )
    |> ExAws.request()
    |> case do
      {:error, {_error_type, error_code, %{code: message}}} ->
        {:error, "Response returned with http error code #{error_code} and message #{message}"}
      {:error, {_error_type, error_code, message}} ->
        {:error, "Response returned with http error code #{error_code} and message #{message}"}
      response -> response
    end

The MIT License (MIT)

Copyright (c) 2017 CargoSense, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.