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promql: validate `label_join` destination label 

Signed-off-by: tdakkota <tanc13@yandex.ru>
This commit is contained in:
tdakkota 2024-03-20 22:01:05 +03:00
parent a9a4fbafb0
commit f6834c347a
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1 changed files with 3 additions and 0 deletions
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3
promql/functions.go
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@ -1386,6 +1386,9 @@ func (ev *evaluator) evalLabelJoin(args parser.Expressions) (parser.Value, annot
} }
srcLabels[i-3] = src srcLabels[i-3] = src
} }
if !model.LabelName(dst).IsValid() {
panic(fmt.Errorf("invalid destination label name in label_join(): %s", dst))
}
val, ws := ev.eval(args[0]) val, ws := ev.eval(args[0])
matrix := val.(Matrix) matrix := val.(Matrix)