feat(core): add seconds converter utility

[ZY-Ang]

Which problem is this PR solving?

api.HrTime has no utility to convert to float seconds for http.server.request.duration and http.client.request.duration semantic conventions.

Short description of the changes

Minor addition of a utility for another PR that uses that utility. Simply converts api.HrTime to seconds.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• #hrTimeToSeconds unit test

Checklist:

• Followed the style guidelines of this project
• Unit tests have been added
• Documentation has been updated

[dyladan]

This looks good. Are you working on a PR to update the metric semconv for the http instrumentation?

[ZY-Ang]

This looks good. Are you working on a PR to update the metric semconv for the http instrumentation?

Can look into it.

[dyladan]

This looks good. Are you working on a PR to update the metric semconv for the http instrumentation?

Can look into it.

I was just asking. The PR description mentions this is "Minor addition of a utility for another PR that uses that utility." so I was wondering what the other PR is.

[dyladan]

I'm asking for 2 reasons

1. I'm working on updating the http instrumentation right now so I want to make sure we don't duplicate work
2. I don't think we should merge this PR for an unused utility until we know what it will be used for.

edit: if you want to work on updating the http instrumentation for metrics that's fine. I've opened a PR for client traces and I have server traces completed but no PR opened yet. I started working on metrics but didn't get as far.

[ZY-Ang]

@dyladan go ahead, do you have a link for visibility?

the utility is for converting the HR time to seconds. You’ll notice the current usage of the milliseconds version in the http instrumentation. If we can get this merged in, you just might be able to use it in your PR

[dyladan]

@dyladan go ahead, do you have a link for visibility?

the utility is for converting the HR time to seconds. You’ll notice the current usage of the milliseconds version in the http instrumentation. If we can get this merged in, you just might be able to use it in your PR

Open PR for client traces here: #4940

Still in draft because I'm finishing up testing.

I'm asking what the motivation is for this PR. You mention in the description that this enables another PR but you don't say what that PR is.

[ZY-Ang]

@dyladan yours is way more refined. I thought no one was working on it. Please don’t let this hold you up. I will wait for your stable semconv implementation with earnest

[pichlermarc]

@dyladan are you planning to use this for the semconv update in the http instrumentation? 🤔
It adds to the public interface of @opentelemetry/core so I'd like to be extra-sure that we will use this 🙂