A_SUBJECT

Publish an SMS message to an Amazon SNS Topic

An AWS IAM [access key pair](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html) is required to interact with Amazon SNS.
Make sure that the key pair you generate in AWS has proper permissions to the SNS resources you want to access.
Read about Amazon SNS IAM policies in the [AWS docs](https://docs.aws.amazon.com/sns/latest/dg/sns-using-identity-based-policies.html).


To enable the IAM role authentication begin by logging into the [AWS Console](https://aws.amazon.com/) and navigate to Identity and Access Management (IAM).

To create a user and generate credentials:

1. Navigate to Users and select **Create User**.

-   Provide a User name and check the box providing them user access to the AWS Management Console if needed.
-   Once completed with the User creation, copy the ARN provided in the summary for a later step.

2. To obtain the ARN for an existing User, click on the designated username from the Users page and the ARN will be provided in the summary section.

3. From the summary section, select **Create access key**

-   Select **Third-party service** as the access key type and select next.
-   Set a description and select **create access key**.
-   Copy the **Access Key** and **Secret access key** and enter those into the connection configuration of your integration along with the ARN.

To create and assign a user a role:

1. Navigate to Roles and select **Create Role**.

-   Select **Custom Trust Policy** for the Trusted entity types
-   Copy the following statement into the statement console. Making sure to replace the **ARN** with the user's actual ARN from the previous section

```json
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "AWS": "ARN"
            },
            "Action": "sts:AssumeRole"
        }
    ]
}
```

-   When adding permissions provide the **AmazonSNSFullAccess** permission
-   Complete remaining steps and select **Create Role**


Manage subscriptions, topics, and messages within Amazon (AWS) SNS

[Amazon SNS](https://aws.amazon.com/sns/) is a service for both application-to-application (A2A) and application-to-person (A2P) communication.
The Amazon SNS component allows you to interact with an SNS Topic.


Confirm subscription and unsubscribe requests and validate SNS messages

Amazon SNS can be configured to send notification to an HTTPS endpoint.
To point SNS notifications towards your integration, identify your integration's webhook URL, and [subscribe that URL](https://docs.aws.amazon.com/sns/latest/dg/SendMessageToHttp.subscribe.html) to an SNS topic.
Once a subscription has been created, new messages sent to your SNS topic will be sent to your Prismatic instance via its webhook URL.

Messages from SNS take one of three forms: **Subscription Confirmation**, **Unsubscribe Confirmation** or **Notification**.
If a subscription or unsubscribe message is received, this trigger automatically handles the [subscription confirmation process](https://docs.aws.amazon.com/sns/latest/dg/SendMessageToHttp.confirm.html).
This process lets Amazon SNS know that your instance is ready to receive and process notifications.

Depending on what type of message is received, the trigger will then follow a "Subscribe", "Unsubscribe" or "Notification" branch.
These branches make it so you can configure additional steps that execute (e.g. you can alert your team via Slack that a subscription has been confirmed).
"Subscribe" and "Unsubscribe" branches can be left blank if you don't have any additional steps you'd like to run once a subscription has been confirmed - you will likely only fill in steps under the "Notification" branch.

In addition to confirming subscriptions, this trigger [verifies the signature](https://docs.aws.amazon.com/sns/latest/dg/sns-verify-signature-of-message.html) of messages that come in, so you know they originated from Amazon.

:::caution Testing must be done through SNS
Because of signature verification, testing of integrations with this trigger must be done using Amazon SNS.
Tests from the integration designer, or from `curl` or another HTTP client will fail since you can't spoof Amazon's message signature.
:::

When a "Notification" message comes in, and it is a JSON string, you can optionally choose to parse the JSON using the "Parse Message" input.
Note that if the incoming message is not valid JSON, the trigger will throw an error when "Parse Message" is set to true.


Action Name	Action Description
Create Topic	Create an Amazon SNS Topic
Delete Topic	Delete an Amazon SNS Topic
Get Topic Attributes	Retrieves the attributes of an Amazon SNS Topic.
List Topics	List available Amazon SNS Topics
Publish Message	Publish a message to an Amazon SNS Topic
Publish Batch Messages	Publishes up to ten messages to the specified Amazon SNS Topic
List Subscriptions	Retrieve the subscriptions of an Amazon SNS Topic
Subscribe to Topic	Subscribe to an Amazon SNS Topic
Unsubscribe from a Topic	Unsubscribe from an Amazon SNS Topic
List Opt Out Numbers	Create an Amazon SNS Topic
Publish SMS	Publish an SMS message to an Amazon SNS Topic

Amazon SNS Connector

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