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Add tests, fallback properly if we can't init the cgroups #41189

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fearful-symmetry
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Turns out that we don't have any tests that actually check to see if the default cgroups callback actually initializes properly, so #41108 broke the processors on non-linux systems.

This re-adds support for systems that don't have cgroups support, and also adds tests that makes sure the processors can startup and run with the default cgroups provider.

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

@fearful-symmetry fearful-symmetry added the Team:Security-Linux Platform Linux Platform Team in Security Solution label Oct 9, 2024
@fearful-symmetry fearful-symmetry self-assigned this Oct 9, 2024
@fearful-symmetry fearful-symmetry requested a review from a team as a code owner October 9, 2024 20:12
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Pinging @elastic/sec-linux-platform (Team:Security-Linux Platform)

@botelastic botelastic bot added needs_team Indicates that the issue/PR needs a Team:* label and removed needs_team Indicates that the issue/PR needs a Team:* label labels Oct 9, 2024
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mergify bot commented Oct 9, 2024

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @fearful-symmetry? 🙏.
For such, you'll need to label your PR with:

  • The upcoming major version of the Elastic Stack
  • The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

  • backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit

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mergify bot commented Oct 9, 2024

backport-8.x has been added to help with the transition to the new branch 8.x.
If you don't need it please use backport-skip label and remove the backport-8.x label.

@mergify mergify bot added the backport-8.x Automated backport to the 8.x branch with mergify label Oct 9, 2024
@pierrehilbert pierrehilbert added the Team:Elastic-Agent-Data-Plane Label for the Agent Data Plane team label Oct 10, 2024
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Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)

@pierrehilbert pierrehilbert requested review from mauri870 and removed request for rdner October 10, 2024 07:18
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@leehinman leehinman left a comment

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Does this need a changelog entry?

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@leehinman I don't think so, since the original bug was never released.

@fearful-symmetry fearful-symmetry merged commit 648ec22 into elastic:main Oct 10, 2024
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mergify bot pushed a commit that referenced this pull request Oct 10, 2024
* add tests, fallback properly if we can't init the cgroups

* linter

* fix test

(cherry picked from commit 648ec22)

# Conflicts:
#	libbeat/processors/add_docker_metadata/add_docker_metadata.go
#	libbeat/processors/add_process_metadata/add_process_metadata.go
#	libbeat/processors/add_process_metadata/add_process_metadata_test.go
#	libbeat/processors/add_process_metadata/gosigar_cid_provider.go
fearful-symmetry added a commit that referenced this pull request Oct 11, 2024
* add tests, fallback properly if we can't init the cgroups

* linter

* fix test
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6 participants