node_exporter/collector/time_linux.go
Johannes 'fish' Ziemke 85e20238e7
Add clocksource metrics to time collector (#2197)
* Add clocksource metrics to time collector

This closes #1336

Signed-off-by: Johannes 'fish' Ziemke <github@freigeist.org>
2021-11-12 11:45:31 +01:00

49 lines
1.4 KiB
Go

// Copyright 2021 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build linux && !notime
// +build linux,!notime
package collector
import (
"fmt"
"strconv"
"github.com/go-kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/procfs/sysfs"
)
func (c *timeCollector) update(ch chan<- prometheus.Metric) error {
fs, err := sysfs.NewFS(*sysPath)
if err != nil {
return fmt.Errorf("failed to open procfs: %w", err)
}
clocksources, err := fs.ClockSources()
if err != nil {
return fmt.Errorf("couldn't get clocksources: %w", err)
}
level.Debug(c.logger).Log("msg", "in Update", "clocksources", fmt.Sprintf("%v", clocksources))
for i, clocksource := range clocksources {
is := strconv.Itoa(i)
for _, cs := range clocksource.Available {
ch <- c.clocksourcesAvailable.mustNewConstMetric(1.0, is, cs)
}
ch <- c.clocksourceCurrent.mustNewConstMetric(1.0, is, clocksource.Current)
}
return nil
}