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160 guard metrics collector with mutex#186

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ghdrope wants to merge 2 commits intokcp-dev:mainfrom
ghdrope:160-guard-MetricsCollector-with-mutex
Open

160 guard metrics collector with mutex#186
ghdrope wants to merge 2 commits intokcp-dev:mainfrom
ghdrope:160-guard-MetricsCollector-with-mutex

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@ghdrope ghdrope commented Mar 28, 2026

Summary

Make MetricsCollector thread-safe and prevent metric disappearance during Prometheus scrapes by adding a sync.RWMutex and a Collect() method.

Note: Also added defer ticker.Stop() and commenting.

What Type of PR Is This?

/kind bug
/kind cleanup
/kind documentation

Related Issue(s)

Fixes #159

Release Notes

MetricsCollector is now thread-safe.

@ghdrope
collector: make MetricsCollector thread-safe with RWMutex
a658008 
Signed-off-by: ghdrope <0coasts-gearing@icloud.com>
@kcp-ci-bot kcp-ci-bot added kind/bug Categorizes issue or PR as related to a bug. release-note Denotes a PR that will be considered when it comes time to generate release notes. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. dco-signoff: yes Indicates the PR's author has signed the DCO. kind/documentation Categorizes issue or PR as related to documentation. labels Mar 28, 2026
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kcp-ci-bot commented Mar 28, 2026

Hi @ghdrope. Thanks for your PR.

I'm waiting for a kcp-dev 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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@kcp-ci-bot kcp-ci-bot added needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 28, 2026
@ghdrope ghdrope force-pushed the 160-guard-MetricsCollector-with-mutex branch from 9dc680a to 08a7ba4 Compare March 28, 2026 13:25
ntnn
ntnn approved these changes Mar 29, 2026
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/lgtm

Thank you!

/assign @xrstf

@kcp-ci-bot kcp-ci-bot added the lgtm Indicates that a PR is ready to be merged. label Mar 29, 2026
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kcp-ci-bot commented Mar 29, 2026

LGTM label has been added.

DetailsGit tree hash: d32980f2f59971dadc8e8dbf6189ef948b725759

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ntnn commented Mar 29, 2026

/ok-to-test

@kcp-ci-bot kcp-ci-bot added ok-to-test Indicates a non-member PR verified by an org member that is safe to test. and removed needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Mar 29, 2026
@ntnn ntnn added this to tbd Mar 29, 2026
@github-project-automation github-project-automation bot moved this to Backlog in tbd Mar 29, 2026
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ntnn commented Mar 29, 2026

/retest

infra failure

 failed to connect to the docker API at unix:///var/run/docker.sock; check if the path is correct and if the daemon is running: dial unix /var/run/docker.sock: connect: no such file or directory

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ghdrope commented Mar 30, 2026

/retest

xrstf
xrstf reviewed Mar 30, 2026
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Comment thread internal/metrics/collector.go Outdated
xrstf
xrstf reviewed Mar 30, 2026
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@ghdrope
docs: add comments to MetricsCollector methods
dc60979 
Signed-off-by: ghdrope <0coasts-gearing@icloud.com>
@ghdrope ghdrope force-pushed the 160-guard-MetricsCollector-with-mutex branch from 08a7ba4 to dc60979 Compare March 30, 2026 22:36
@kcp-ci-bot kcp-ci-bot removed the lgtm Indicates that a PR is ready to be merged. label Mar 30, 2026
@kcp-ci-bot kcp-ci-bot requested review from ntnn and xrstf March 30, 2026 22:36
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kcp-ci-bot commented Mar 30, 2026

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please ask for approval from xrstf. For more information see the Code Review Process.

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Details Needs approval from an approver in each of these files:

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Approvers can cancel approval by writing /approve cancel in a comment

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kcp-ci-bot commented Mar 30, 2026

New changes are detected. LGTM label has been removed.

@ntnn ntnn moved this from Backlog to Reviewing in tbd Mar 31, 2026
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xrstf commented Apr 1, 2026

/retest

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ghdrope commented Apr 2, 2026

/retest

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kcp-ci-bot commented Apr 2, 2026

@ghdrope: 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-kcp-operator-test-e2e-canary dc60979 link false /test pull-kcp-operator-test-e2e-canary

Full PR test history

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mjudeikis commented Apr 8, 2026

/retest

@kcp-ci-bot kcp-ci-bot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Apr 8, 2026
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kcp-ci-bot commented Apr 8, 2026

PR needs rebase.

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Reviewers

@ntnn ntnn Awaiting requested review from ntnn

@xrstf xrstf Awaiting requested review from xrstf

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dco-signoff: yes Indicates the PR's author has signed the DCO. kind/bug Categorizes issue or PR as related to a bug. kind/cleanup Categorizes issue or PR as related to cleaning up code, process, or technical debt. kind/documentation Categorizes issue or PR as related to documentation. needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. ok-to-test Indicates a non-member PR verified by an org member that is safe to test. release-note Denotes a PR that will be considered when it comes time to generate release notes. size/M Denotes a PR that changes 30-99 lines, ignoring generated files.

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