106 lines
2.2 KiB
Go
106 lines
2.2 KiB
Go
package main
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import (
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"path"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/log"
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"github.com/soundcloud/ipmi_exporter/freeipmi"
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)
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const (
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namespace = "ipmi"
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targetLocal = ""
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)
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type collector interface {
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Name() CollectorName
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Cmd() string
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Args() []string
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Collect(output freeipmi.Result, ch chan<- prometheus.Metric, target ipmiTarget) (int, error)
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}
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type metaCollector struct {
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target string
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module string
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config *SafeConfig
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}
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type ipmiTarget struct {
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host string
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config IPMIConfig
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}
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var (
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upDesc = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "", "up"),
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"'1' if a scrape of the IPMI device was successful, '0' otherwise.",
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[]string{"collector"},
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nil,
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)
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durationDesc = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "scrape_duration", "seconds"),
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"Returns how long the scrape took to complete in seconds.",
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nil,
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nil,
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)
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)
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// Describe implements Prometheus.Collector.
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func (c metaCollector) Describe(ch chan<- *prometheus.Desc) {
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// all metrics are described ad-hoc
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}
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func markCollectorUp(ch chan<- prometheus.Metric, name string, up int) {
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ch <- prometheus.MustNewConstMetric(
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upDesc,
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prometheus.GaugeValue,
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float64(up),
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name,
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)
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}
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// Collect implements Prometheus.Collector.
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func (c metaCollector) Collect(ch chan<- prometheus.Metric) {
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start := time.Now()
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defer func() {
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duration := time.Since(start).Seconds()
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log.Debugf("Scrape of target %s took %f seconds.", targetName(c.target), duration)
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ch <- prometheus.MustNewConstMetric(
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durationDesc,
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prometheus.GaugeValue,
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duration,
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)
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}()
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config := c.config.ConfigForTarget(c.target, c.module)
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target := ipmiTarget{
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host: c.target,
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config: config,
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}
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for _, collector := range config.GetCollectors() {
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var up int
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log.Debugf("Running collector: %s", collector.Name())
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fqcmd := path.Join(*executablesPath, collector.Cmd())
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args := collector.Args()
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cfg := config.GetFreeipmiConfig()
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result := freeipmi.Execute(fqcmd, args, cfg, target.host, log.Base())
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up, _ = collector.Collect(result, ch, target)
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markCollectorUp(ch, string(collector.Name()), up)
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}
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}
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func targetName(target string) string {
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if target == targetLocal {
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return "[local]"
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}
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return target
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}
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