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Merge pull request #11426 from douglascamata/document-and-test-relabel-memory-reuse

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Better document possible relabel input modification
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Julien Pivotto 2023-07-18 13:16:54 +02:00 committed by GitHub
parent 06d31c9cc9 47819fef01
commit b7028c1722
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1 changed files with 4 additions and 2 deletions
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6
model/relabel/relabel.go
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@ -202,10 +202,12 @@ func (re Regexp) String() string {
return str[4 : len(str)-2] return str[4 : len(str)-2]
} }
// Process returns a relabeled copy of the given label set. The relabel configurations // Process returns a relabeled version of the given label set. The relabel configurations
// are applied in order of input. // are applied in order of input.
// There are circumstances where Process will modify the input label.
// If you want to avoid issues with the input label set being modified, at the cost of
// higher memory usage, you can use lbls.Copy().
// If a label set is dropped, EmptyLabels and false is returned. // If a label set is dropped, EmptyLabels and false is returned.
// May return the input labelSet modified.
func Process(lbls labels.Labels, cfgs ...*Config) (ret labels.Labels, keep bool) { func Process(lbls labels.Labels, cfgs ...*Config) (ret labels.Labels, keep bool) {
lb := labels.NewBuilder(lbls) lb := labels.NewBuilder(lbls)
if !ProcessBuilder(lb, cfgs...) { if !ProcessBuilder(lb, cfgs...) {