@aws-cdk/aws-sqs: Add readonly deadLetter property to Queue

[markmansur]

Description

Add a readonly property to Queue to access the dead letter queue (if configured)

Use Case

Sometimes I want access to a queues dead letter queue. For example say I'm building a separate monitoring stack which provisions CloudWatch dashboards/alarms for many SQS queues.

It would be much easier to have a dead letter queue property on each queue versus having to maintain code that maps each queue to it's dead letter queue.

For example

// Create deadletter queue
const deadletterQueue = new sqs.Queue(this, 'MyDeadLetterQueue');

// create SQS queue
const queue = new sqs.Queue(this, 'MySQSQueue', {
  deadLetterQueue: {
    queue: deadletterQueue,
    maxReceiveCount: 3
  }
});

// Want to be able to access dead letter queue as a property
const dlq = queue.deadLetterQueue;

Proposed Solution

Add an optional readonly property to the Queue class to access the dead letter queue config, if one is configured

Other information

No response

Acknowledge

• I may be able to implement this feature request
• This feature might incur a breaking change

[njlynch]

Sure, this sounds reasonable. I would start just adding it to Queue, and determine if there's a reasonable use case for adding to IQueue as a follow-up.

We welcome community contributions! If you are able, we encourage you to contribute.

[github-actions]

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