Service A got an instana span (say spanX) and I need to send this spanX to service B via an HTTP call to make a child span (say spanY) out of it. I read through and found that in OpenTelemetry TextMapPropagator can be used to inject span to HTTP headers. But couldn’t find a doc or code snippet of it.
Service A
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SpanX = tracer.start_span("parent")
part1. create a span context of SpanX to put in the http header
-> HTTP call to service B
SERVICE B
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part2. Read the span context of SpanX from the HTTP header and create a child span, span Y out of it
How to do Part1 and Part2 is what I am exactly looking for. Any help is greatly appreciated. Thanks in advance