tsweb/varz: fix exporting histograms
Updates tailscale/corp#8641 Signed-off-by: Maisem Ali <maisem@tailscale.com>
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@ -34,10 +34,11 @@ const (
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gaugePrefix = "gauge_"
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counterPrefix = "counter_"
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labelMapPrefix = "labelmap_"
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histogramPrefix = "histogram_"
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)
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// prefixesToTrim contains key prefixes to remove when exporting and sorting metrics.
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var prefixesToTrim = []string{gaugePrefix, counterPrefix, labelMapPrefix}
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var prefixesToTrim = []string{gaugePrefix, counterPrefix, labelMapPrefix, histogramPrefix}
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var timeStart = time.Now()
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@ -71,10 +72,12 @@ func prometheusMetric(prefix string, key string) (string, string, string) {
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case strings.HasPrefix(key, gaugePrefix):
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typ = "gauge"
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key = strings.TrimPrefix(key, gaugePrefix)
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case strings.HasPrefix(key, counterPrefix):
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typ = "counter"
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key = strings.TrimPrefix(key, counterPrefix)
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case strings.HasPrefix(key, histogramPrefix):
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typ = "histogram"
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key = strings.TrimPrefix(key, histogramPrefix)
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}
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if strings.HasPrefix(key, labelMapPrefix) {
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key = strings.TrimPrefix(key, labelMapPrefix)
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