feat: Remove extension hello check as it's redundant

[astuyve]

What does this PR do?

Checking the file presence is enough, start order is enforced by the lambda runtime.

Motivation

Testing Guidelines

Additional Notes

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.95%. Comparing base (9c44eab) to head (859d234).

❗ Current head 859d234 differs from pull request most recent head d892ff3. Consider uploading reports for the commit d892ff3 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #516      +/-   ##
==========================================
- Coverage   82.09%   81.95%   -0.14%     
==========================================
  Files          54       54              
  Lines        2212     2206       -6     
  Branches      513      512       -1     
==========================================
- Hits         1816     1808       -8     
- Misses        332      334       +2     
  Partials       64       64              

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[duncanista]

LGTM

[purple4reina]

So. I know the extension specifically uses the call to Hello to determine if there's a tracing layer present. See https://github.com/DataDog/datadog-agent/blob/11e8ea8b5455530ba8afa8ef1831d179c5523479/pkg/serverless/daemon/routes.go#L29

[astuyve]

We do, but the library never calls start-invocation, so I assume the call to enrichInferredSpan() never happens or happens but the result is never used. source.

We can see with this build, there are no duplicate spans. And we have made this change in Python already.

[purple4reina]

We do, but the library never calls start-invocation, so I assume the call to enrichInferredSpan() never happens or happens but the result is never used. source.

We can see with this build, there are no duplicate spans. And we have made this change in Python already.

Ah, yes I see now. Thanks for the explanation. We can probably just go ahead and delete that code from the extension then yeah?