mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-20 08:07:31 -07:00
136 lines
3.9 KiB
Go
136 lines
3.9 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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// +build !nosupervisord
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package collector
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import (
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"github.com/kolo/xmlrpc"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/common/log"
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"gopkg.in/alecthomas/kingpin.v2"
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)
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var (
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supervisordURL = kingpin.Flag("collector.supervisord.url", "XML RPC endpoint.").Default("http://localhost:9001/RPC2").String()
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)
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type supervisordCollector struct {
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client *xmlrpc.Client
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upDesc *prometheus.Desc
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stateDesc *prometheus.Desc
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exitStatusDesc *prometheus.Desc
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uptimeDesc *prometheus.Desc
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}
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func init() {
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registerCollector("supervisord", defaultDisabled, NewSupervisordCollector)
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}
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// NewSupervisordCollector returns a new Collector exposing supervisord statistics.
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func NewSupervisordCollector() (Collector, error) {
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client, err := xmlrpc.NewClient(*supervisordURL, nil)
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if err != nil {
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return nil, err
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}
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var (
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subsystem = "supervisord"
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labelNames = []string{"name", "group"}
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)
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return &supervisordCollector{
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client: client,
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upDesc: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "up"),
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"Process Up",
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labelNames,
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nil,
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),
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stateDesc: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "state"),
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"Process State",
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labelNames,
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nil,
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),
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exitStatusDesc: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "exit_status"),
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"Process Exit Status",
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labelNames,
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nil,
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),
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uptimeDesc: prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "uptime"),
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"Process Uptime",
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labelNames,
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nil,
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),
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}, nil
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}
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func (c *supervisordCollector) isRunning(state int) bool {
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// http://supervisord.org/subprocess.html#process-states
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const (
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STOPPED = 0
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STARTING = 10
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RUNNING = 20
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BACKOFF = 30
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STOPPING = 40
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EXITED = 100
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FATAL = 200
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UNKNOWN = 1000
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)
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switch state {
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case STARTING, RUNNING, STOPPING:
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return true
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}
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return false
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}
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func (c *supervisordCollector) Update(ch chan<- prometheus.Metric) error {
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var infos []struct {
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Name string `xmlrpc:"name"`
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Group string `xmlrpc:"group"`
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Start int `xmlrpc:"start"`
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Stop int `xmlrpc:"stop"`
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Now int `xmlrpc:"now"`
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State int `xmlrpc:"state"`
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StateName string `xmlrpc:"statename"`
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SpawnErr string `xmlrpc:"spanerr"`
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ExitStatus int `xmlrpc:"exitstatus"`
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StdoutLogfile string `xmlrcp:"stdout_logfile"`
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StderrLogfile string `xmlrcp:"stderr_logfile"`
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PID int `xmlrpc:"pid"`
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}
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if err := c.client.Call("supervisor.getAllProcessInfo", nil, &infos); err != nil {
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return err
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}
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for _, info := range infos {
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labels := []string{info.Name, info.Group}
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ch <- prometheus.MustNewConstMetric(c.stateDesc, prometheus.GaugeValue, float64(info.State), labels...)
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ch <- prometheus.MustNewConstMetric(c.exitStatusDesc, prometheus.GaugeValue, float64(info.ExitStatus), labels...)
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if c.isRunning(info.State) {
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ch <- prometheus.MustNewConstMetric(c.upDesc, prometheus.GaugeValue, 1, labels...)
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ch <- prometheus.MustNewConstMetric(c.uptimeDesc, prometheus.CounterValue, float64(info.Now-info.Start), labels...)
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} else {
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ch <- prometheus.MustNewConstMetric(c.upDesc, prometheus.GaugeValue, 0, labels...)
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ch <- prometheus.MustNewConstMetric(c.uptimeDesc, prometheus.CounterValue, 0, labels...)
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}
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log.Debugf("%s:%s is %s on pid %d", info.Group, info.Name, info.StateName, info.PID)
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}
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return nil
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}
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