feat: remove the for-loop and use linux event watcher to monitor file…

[Pangjiping]

… change which could avoid a lot of CPU waste.

Changes

modify the behavior of detecting files through for-loop to use filesystem event watcher, which can avoid a lot of waste of CPU resources

/kind bug

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[tekton-robot]

Hi @Pangjiping. Thanks for your PR.

I'm waiting for a tektoncd member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Pangjiping]

/kind bug

[Pangjiping]

related to issue #7293

In fact, we fully enabled sidecarlogresults in our large production environment (about 2 million taskruns per week), but after running for a period of time, we found a sharp increase in CPU usage. After troubleshooting, it was found that the implementation of sidecarlogresults had certain bug. I have fixed the problem and have been running safely in the production environment for three months. @jerop

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage-df to re-run this coverage report

File	Old Coverage	New Coverage	Delta
internal/sidecarlogresults/sidecarlogresults.go	87.9%	82.2%	-5.8

[chitrangpatel]

related to issue #7293

In fact, we fully enabled sidecarlogresults in our large production environment (about 2 million taskruns per week), but after running for a period of time, we found a sharp increase in CPU usage. After troubleshooting, it was found that the implementation of sidecarlogresults had certain bug. I have fixed the problem and have been running safely in the production environment for three months. @jerop

That's amazing! Thanks for the fix. I'll review it promptly.

[chitrangpatel]

related to issue #7293
In fact, we fully enabled sidecarlogresults in our large production environment (about 2 million taskruns per week), but after running for a period of time, we found a sharp increase in CPU usage. After troubleshooting, it was found that the implementation of sidecarlogresults had certain bug. I have fixed the problem and have been running safely in the production environment for three months. @jerop

That's amazing! Thanks for the fix. I'll review it promptly.

LGTM mostly. Any way we can bump the coverage? I see a significant portion of untested code. If we can do that via unit tests, that is great. If not, we should at least add some e2e tests.

[afrittoli]

/ok-to-test

[afrittoli]

Is this change intended?

[vdemeester]

@afrittoli it might not be, but it's doing the same thing automatically on my laptop (go 1.22.3 from nixos) — it automatically adds the toolchain entry.

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
internal/sidecarlogresults/sidecarlogresults.go	87.9%	82.2%	-5.8

[tekton-robot]

@Pangjiping: PR needs rebase.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[chitrangpatel]

@Pangjiping I'm moving this to the next release milestone unless you have time to resolve the comments and merge conflicts soon. Please let us know.

[khrm]

/test pull-tekton-pipeline-build-tests

[tekton-robot]

@Pangjiping: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-tekton-pipeline-build-tests	490ac8a	link	true	/test pull-tekton-pipeline-build-tests

Full PR test history. Your PR dashboard.

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[tekton-robot]

The following Tekton test failed:

Test name	Commit	Details	Required	Rerun command
pull-tekton-pipeline-go-coverage-df	490ac8a	link	true	/test pull-tekton-pipeline-go-coverage-df

[khrm]

Can you address review comments and fix linter issue due to which build is failing?

[afrittoli]

@Pangjiping could you rebase this?