Description
This line is checking for the key eventSource which will never be satisfied for SNS. Per AWS docs, the key is actually EventSource. The very simple fix would be to simply check for both eventSource and EventSource.

What is the expected behavior?
What did you expect to see?
span_kind for SNS event sources should be set to CONSUMER

What is the actual behavior?
span_kind for SNS event sources are being set to SERVER