Allow the source of the parent context to be configurable.

[rapphil]

This is to track the upstream work as result of:

open-telemetry/opentelemetry-lambda#714

We need propose a change in the spec to add support to the EventToCarrier abstraction and make it configurable in the lambda instrumentation. The configuration should be used to inform what is the source for generating the carrier that will be used in the instrumentation so that the parent/child relationship is properly created.

References:

• AWS Lambda spec inappropriately prioritizes x-ray propagation open-telemetry/opentelemetry-specification#3060 (comment)
• https://github.com/open-telemetry/opentelemetry-go-contrib/blob/75d0c13f6129330f3b5b060791aa8cefdc553849/instrumentation/github.com/aws/aws-lambda-go/otellambda/config.go#L114

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[github-actions]

This issue is stale because it has been open 90 days with no activity. If you want to keep this issue open, please just leave a comment below and auto-close will be canceled

[github-actions]

This issue is stale because it has been open 90 days with no activity. If you want to keep this issue open, please just leave a comment below and auto-close will be canceled

[github-actions]

This issue was closed because it has been marked as stale for 30 days with no activity.