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feat(@opentelemetry-instrumentation-http): support adding custom attributes before a span is started #2332

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echoontheway
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@echoontheway echoontheway commented Jul 7, 2021

Which problem is this PR solving?

  • support adding custom attributes before a span is started for opentelemetry-instrumentation-http
  • help to use some custom fields to make the sample decision
  • help to report some custom fields before a request/response

Short description of the changes

  • add startIncomingSpanHook,startOutgoingSpanHook and corresponding test for opentelemetry-instrumentation-http

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linux-foundation-easycla bot commented Jul 7, 2021

CLA Signed

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@vmarchaud vmarchaud left a comment

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lgtm

@vmarchaud vmarchaud requested a review from Flarna July 11, 2021 07:59
@vmarchaud vmarchaud added the enhancement New feature or request label Jul 11, 2021
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codecov bot commented Jul 11, 2021

Codecov Report

Merging #2332 (0d393d9) into main (9c10bd7) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 0d393d9 differs from pull request most recent head c637254. Consider uploading reports for the commit c637254 to get more accurate results

@@            Coverage Diff             @@
##             main    #2332      +/-   ##
==========================================
- Coverage   92.77%   92.76%   -0.02%     
==========================================
  Files         145      145              
  Lines        5221     5226       +5     
  Branches     1070     1071       +1     
==========================================
+ Hits         4844     4848       +4     
- Misses        377      378       +1     
Impacted Files Coverage Δ
...ges/opentelemetry-instrumentation-http/src/http.ts 94.98% <100.00%> (+0.09%) ⬆️
...es/opentelemetry-instrumentation-http/src/utils.ts 99.02% <100.00%> (ø)
...emetry-api-metrics/src/platform/node/globalThis.ts 0.00% <0.00%> (-100.00%) ⬇️

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Please describe the new options in the readme of the package.

export interface StartOutgoingSpanCustomAttributeFunction {
(request: RequestOptions ): SpanAttributes;
}

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In the specs meeting it looks like there will be a different way to doing this (if I'm reading and listening correctly)

https://github.com/open-telemetry/oteps/blob/8335c9a53cdf3398075dd9523d3752522c0ece28/text/0165-instrumentation-api.md

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I believe i read it the same as you, this is welcome as a lot of instrumentation had some kind of system like this already. I believe this should be handled in the base instrumentation class though. I think it make sense to create a dedicated issue for this

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👍
Before it's handled in the base instrumentation, will these startHooks for http be accepted? For I wanna use some custom fields to make the sample decision in my project. :)

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I think so

@echoontheway
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Please describe the new options in the readme of the package.

done :)

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@echoontheway Could you fix the conflicts ?

@echoontheway echoontheway force-pushed the feature/echo_addStartSpanHook branch from 774d8d9 to bcd3206 Compare July 26, 2021 06:39
@echoontheway echoontheway force-pushed the feature/echo_addStartSpanHook branch from bcd3206 to 1c5221a Compare July 26, 2021 06:56
@echoontheway echoontheway changed the title feat(opentelemetry-instrumentation-http): support adding custom attri… feat(@opentelemetry-instrumentation-http): support adding custom attributes before a span is started Jul 26, 2021
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@echoontheway Could you fix the conflicts ?

done,sorry for late :)

@dyladan dyladan requested a review from rauno56 as a code owner July 26, 2021 19:26
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6 participants