122 lines
2.9 KiB
Go
122 lines
2.9 KiB
Go
// Copyright 2021 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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package main
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import (
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"path"
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"time"
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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/prometheus-community/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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level.Debug(logger).Log("msg", "Scrape duration", "target", targetName(c.target), "duration", 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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level.Debug(logger).Log("msg", "Running collector", "target", target.host, "collector", collector.Name())
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fqcmd := collector.Cmd()
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if !path.IsAbs(fqcmd) {
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fqcmd = path.Join(*executablesPath, collector.Cmd())
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}
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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, logger)
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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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