Fix exe error checks - Githubissues

elastic / elastic-agent-system-metrics

Apache License 2.0

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Fix exe error checks #148

Closed fearful-symmetry closed 2 months ago

fearful-symmetry commented 2 months ago

What does this PR do?

Closes https://github.com/elastic/elastic-agent-system-metrics/issues/135

This fixes an issue where our permissions checks for fetching /proc/pid/exe could fail for kernel procs and certain docker configs.

Also re-enables one of the tests.

Why is it important?

This is a bug that causes data loss.

Checklist

[x] My code follows the style guidelines of this project
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have added tests that prove my fix is effective or that my feature works
[ ] I have added an entry in CHANGELOG.md