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Fix invalid metric name panic reading powercap dir #1800

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3 changes: 2 additions & 1 deletion collector/rapl_linux.go
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ package collector

import (
"strconv"
"strings"

"github.com/go-kit/kit/log"
"github.com/prometheus/client_golang/prometheus"
Expand Down Expand Up @@ -61,7 +62,7 @@ func (c *raplCollector) Update(ch chan<- prometheus.Metric) error {
index := strconv.Itoa(rz.Index)

descriptor := prometheus.NewDesc(
prometheus.BuildFQName(namespace, "rapl", rz.Name+"_joules_total"),
prometheus.BuildFQName(namespace, "rapl", strings.ReplaceAll(rz.Name, "-", "_")+"_joules_total"),
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"Current RAPL "+rz.Name+" value in joules",
[]string{"index"}, nil,
)
Expand Down