AWS SQS AWS.SimpleQueueService.UnsupportedAttribute

What is AWS SQS AWS.SimpleQueueService.UnsupportedAttribute

Understanding AWS SQS

Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. SQS eliminates the complexity and overhead associated with managing and operating message-oriented middleware, and empowers developers to focus on differentiating work.

Identifying the Symptom

When working with AWS SQS, you might encounter the error code AWS.SimpleQueueService.UnsupportedAttribute. This error typically arises when you attempt to set or modify an attribute that is not supported by the queue type you are using.

Common Observations

Developers may notice that their application fails to create or modify a queue, and the AWS SDK or CLI returns the unsupported attribute error message. This can halt the deployment or scaling of applications relying on SQS.

Explaining the Issue

The error AWS.SimpleQueueService.UnsupportedAttribute indicates that an attribute specified in the request is not supported by the queue type. AWS SQS offers two types of queues: Standard and FIFO (First-In-First-Out). Each type has its own set of supported attributes, and attempting to use an attribute not applicable to the queue type will result in this error.

Attributes and Queue Types

For instance, FIFO queues support attributes like ContentBasedDeduplication and DeduplicationScope, which are not applicable to Standard queues. Conversely, Standard queues support attributes like DelaySeconds and MaximumMessageSize, which are common to both types but may have different constraints.

Steps to Resolve the Issue

To resolve the AWS.SimpleQueueService.UnsupportedAttribute error, follow these steps:

1. Verify Queue Type

Ensure you know the type of queue you are working with. You can check the queue type by using the AWS Management Console or AWS CLI:

aws sqs get-queue-attributes --queue-url --attribute-names All

Look for the QueueType attribute to confirm whether it is a Standard or FIFO queue.

2. Check Supported Attributes

Refer to the AWS SQS Developer Guide to review the list of supported attributes for your queue type. Ensure that the attributes you are trying to set are valid for the queue type.

3. Modify the Request

Adjust your request to include only supported attributes. For example, if you are working with a FIFO queue, ensure you are not setting attributes like DelaySeconds that are not applicable.

4. Update and Test

Once you have modified your request, update your application or script and test to ensure that the error is resolved. Use the AWS CLI or SDK to verify that the queue attributes are set correctly:

aws sqs set-queue-attributes --queue-url --attributes file://attributes.json

Replace attributes.json with your JSON file containing the correct attributes.

Conclusion

By understanding the specific attributes supported by your SQS queue type and ensuring your requests align with these, you can effectively resolve the AWS.SimpleQueueService.UnsupportedAttribute error. For further reading, visit the AWS SQS product page and the AWS SQS Developer Guide.