Add utility to extract Datadog trace context from serialized TextMapCarrier in AWS message attributes (e.g., SQS, SFN, SNS)

[u-kai]

Package Name

aws (contrib/aws/aws-sdk-go-v2)

Package Version(s)

current stable

Describe the feature you'd like

Datadog provides an official way to inject span context into a TextMapCarrier, which many users then serialize (e.g., via json.Marshal(carrier)) and store into a message attribute (like AWS SQS/SNS/SFN).

https://github.com/DataDog/dd-trace-go/blob/d17f78d5628b079ba3877d0e6915179bc699a3a6/contrib/aws/aws-sdk-go-v2/internal/sqs/sqs.go#L26C1-L106C2

However, there is no matching utility to extract this context from the message attribute.
Users are forced to implement manual deserialization and context extraction, which is repetitive and easy to get wrong.

I would like to request a standard utility to go from a TextMapCarrier string back to a SpanContext.

func ExtractSpanContextFromMessageAttributes(attrs map[string]types.MessageAttributeValue) (tracer.SpanContext, error)

Apologies if this is already supported in some way and I’ve missed it—please feel free to point me in the right direction if so!

Is your feature request related to a problem?

Yes. Currently, we must repeatedly implement the logic to decode JSON strings and convert them into TextMapCarrier for extraction via tracer.Extract.

Describe alternatives you've considered

No response

Additional context

This pattern is used in:

SQS, SNS, and SFN messaging etc...