Akka Alpakka SqsSource weirdly enough can work with queueUrl and also with queueName

Question

Im using Akka Streams, and also alpakka.sqs.scaladsl to read messages from sqs queue.

I'v done in many times, but now I uploaded a version that put the queue name in the source instead of queue url which this was how I did it all the time.

this is how I did it before:

SqsSource(queue.getUrl)

and now I did this:

SqsSource(queueName)

both cases works..

the url prefix is identical between all queues so I figured either alpakka or AmazonSQSAsync have some implicit for this or something, does someone know how to explain this? thanks

Answer 1

Alpakka doesn't do anything special with the queue URL. The string is passed to the AWS SQS unchanged which resolves it.