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fix(cluster): remove raleted metrics label when cluster is deleted #5866

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CharlesQQ
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What type of PR is this?
/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #5843

Special notes for your reviewer:

Does this PR introduce a user-facing change?:


@karmada-bot karmada-bot added the kind/bug Categorizes issue or PR as related to a bug. label Nov 23, 2024
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[APPROVALNOTIFIER] This PR is NOT APPROVED

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@karmada-bot karmada-bot added the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Nov 23, 2024
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⚠️ Please install the 'codecov app svg image' to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

Attention: Patch coverage is 21.42857% with 11 lines in your changes missing coverage. Please review.

Project coverage is 46.19%. Comparing base (88c3e44) to head (cadc62a).

Files with missing lines Patch % Lines
pkg/metrics/cluster.go 0.00% 11 Missing ⚠️

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Additional details and impacted files
@@            Coverage Diff             @@
##           master    #5866      +/-   ##
==========================================
- Coverage   46.20%   46.19%   -0.01%     
==========================================
  Files         663      663              
  Lines       54580    54594      +14     
==========================================
+ Hits        25218    25221       +3     
- Misses      27739    27750      +11     
  Partials     1623     1623              
Flag Coverage Δ
unittests 46.19% <21.42%> (-0.01%) ⬇️

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Have you tested it? Can you share the metrics before and after cluster is deleted?

Comment on lines +244 to +246
defer func() {
metrics.RemoveClusterStatus(cluster)
}()
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What if the removeCluster raises an error? Do we still clean up the metrics?

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What if the removeCluster raises an error? Do we still clean up the metrics?

shouldn't clean up the metrics, I'll fix it!

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After deleting the cluster, also need to delete related metrics label.
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