Appian -> AWS SNS -> AWS SQS

RE: Appian -> AWS SNS -> AWS SQS

Richard Nolan — Wed, 21 Aug 2024 14:22:06 GMT

erickp0002 I wasn't the developer involved, but researching for another. I've asked him and he indicates that there wasn't an X-Ray configuration at play.

RE: Appian -> AWS SNS -> AWS SQS

erickp0002 — Wed, 21 Aug 2024 10:03:39 GMT

Richard Nolan were you able to implement this? If so, do you have x-ray enabled in your SNS topic? We are trying to integrate our SNS with x-ray where the event starts from Appian.

RE: Appian -> AWS SNS -> AWS SQS

SRINIVAS M — Mon, 26 Feb 2024 15:07:41 GMT

Thank you

RE: Appian -> AWS SNS -> AWS SQS

Richard Nolan — Mon, 26 Feb 2024 13:27:07 GMT

Thank you for taking the time to respond with such a detailed answer! The development team who are implementing this have reported success based upon your advice with respect to the header for "Content-Type": "application/x-www-form-urlencoded".
Very much appreciated!

RE: Appian -> AWS SNS -> AWS SQS

SRINIVAS M — Sat, 24 Feb 2024 03:08:50 GMT

Hi,

Since Appian doesn't natively integrate with SQS, using SNS as an intermediary with filter-based forwarding is a clever workaround.

Understanding Message Attributes

Message Attributes add metadata to SNS messages.
They are key-value pairs (string name, string value).
Some attributes have special meaning for filtering

Postman Setup

Endpoint: Find your SNS Topic ARN (looks like arn:aws:sns:region:account-id:topic-name)
Method: POST
Authorization: Use AWS Signature Version 4 (Postman can help generate this based on your credentials)
Headers:
- Content-Type: application/x-www-form-urlencoded
Body: (form-urlencoded)
- Action: "Publish"
- Version: "2010-03-31"
- Message: Your JSON payload string
- MessageAttributes.entry.1.Name: (attribute name, e.g., "eventType")
- MessageAttributes.entry.1.Value.StringValue: (attribute value)
- MessageAttributes.entry.1.Value.DataType: "String"
- ... (add more attributes as needed)

Appian Integration (HTTP Connected System)

Create Connected System:
- Type: HTTP
- Authentication: AWS Signature Version 4
Create Integration:
- Method: POST
- Endpoint URL: Substitute your SNS Topic ARN
- Headers:
  - Content-Type: application/x-www-form-urlencoded
- Parameters
  - Use Appian expressions to dynamically construct parameters listed in the Postman body section

Note:

SQS Subscription: Ensure your SQS queue is subscribed to the SNS topic with an appropriate filter policy based on your Message Attributes.
Error Handling: Implement robust error handling on the Appian side.