mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-27 06:29:50 -08:00
99 lines
3.2 KiB
Go
99 lines
3.2 KiB
Go
// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !norunit
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// +build !norunit
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package collector
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import (
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/soundcloud/go-runit/runit"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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var runitServiceDir = kingpin.Flag("collector.runit.servicedir", "Path to runit service directory.").Default("/etc/service").String()
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type runitCollector struct {
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state typedDesc
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stateDesired typedDesc
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stateNormal typedDesc
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stateTimestamp typedDesc
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logger log.Logger
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}
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func init() {
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registerCollector("runit", defaultDisabled, NewRunitCollector)
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}
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// NewRunitCollector returns a new Collector exposing runit statistics.
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func NewRunitCollector(logger log.Logger) (Collector, error) {
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var (
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subsystem = "service"
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constLabels = prometheus.Labels{"supervisor": "runit"}
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labelNames = []string{"service"}
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)
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return &runitCollector{
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state: typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "state"),
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"State of runit service.",
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labelNames, constLabels,
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), prometheus.GaugeValue},
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stateDesired: typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "desired_state"),
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"Desired state of runit service.",
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labelNames, constLabels,
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), prometheus.GaugeValue},
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stateNormal: typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "normal_state"),
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"Normal state of runit service.",
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labelNames, constLabels,
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), prometheus.GaugeValue},
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stateTimestamp: typedDesc{prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "state_last_change_timestamp_seconds"),
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"Unix timestamp of the last runit service state change.",
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labelNames, constLabels,
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), prometheus.GaugeValue},
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logger: logger,
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}, nil
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}
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func (c *runitCollector) Update(ch chan<- prometheus.Metric) error {
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services, err := runit.GetServices(*runitServiceDir)
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if err != nil {
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return err
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}
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for _, service := range services {
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status, err := service.Status()
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if err != nil {
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level.Debug(c.logger).Log("msg", "Couldn't get status", "service", service.Name, "err", err)
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continue
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}
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level.Debug(c.logger).Log("msg", "duration", "service", service.Name, "status", status.State, "pid", status.Pid, "duration_seconds", status.Duration)
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ch <- c.state.mustNewConstMetric(float64(status.State), service.Name)
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ch <- c.stateDesired.mustNewConstMetric(float64(status.Want), service.Name)
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ch <- c.stateTimestamp.mustNewConstMetric(float64(status.Timestamp.Unix()), service.Name)
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if status.NormallyUp {
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ch <- c.stateNormal.mustNewConstMetric(1, service.Name)
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} else {
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ch <- c.stateNormal.mustNewConstMetric(0, service.Name)
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}
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}
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return nil
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}
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