// Takes a registers a
// SetMetricFamilyInjectionHook.
func NewTextFileCollector() (Collector, error) {
if *textFileDirectory == "" {
// This collector is enabled by default, so do not fail if
// the flag is not passed.
log.Infof("No directory specified, see --textfile.directory")
} else {
prometheus.SetMetricFamilyInjectionHook(parseTextFiles)
}
return &textFileCollector{}, nil
}
func main() {
flag.Parse()
if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("pushgateway"))
os.Exit(0)
}
log.Infoln("Starting pushgateway", version.Info())
log.Infoln("Build context", version.BuildContext())
flags := map[string]string{}
flag.VisitAll(func(f *flag.Flag) {
flags[f.Name] = f.Value.String()
})
ms := storage.NewDiskMetricStore(*persistenceFile, *persistenceInterval)
prometheus.SetMetricFamilyInjectionHook(ms.GetMetricFamilies)
// Enable collect checks for debugging.
// prometheus.EnableCollectChecks(true)
r := httprouter.New()
r.Handler("GET", *metricsPath, prometheus.Handler())
// Handlers for pushing and deleting metrics.
r.PUT("/metrics/job/:job/*labels", handler.Push(ms, true))
r.POST("/metrics/job/:job/*labels", handler.Push(ms, false))
r.DELETE("/metrics/job/:job/*labels", handler.Delete(ms))
r.PUT("/metrics/job/:job", handler.Push(ms, true))
r.POST("/metrics/job/:job", handler.Push(ms, false))
r.DELETE("/metrics/job/:job", handler.Delete(ms))
// Handlers for the deprecated API.
r.PUT("/metrics/jobs/:job/instances/:instance", handler.LegacyPush(ms, true))
r.POST("/metrics/jobs/:job/instances/:instance", handler.LegacyPush(ms, false))
r.DELETE("/metrics/jobs/:job/instances/:instance", handler.LegacyDelete(ms))
r.PUT("/metrics/jobs/:job", handler.LegacyPush(ms, true))
r.POST("/metrics/jobs/:job", handler.LegacyPush(ms, false))
r.DELETE("/metrics/jobs/:job", handler.LegacyDelete(ms))
r.Handler("GET", "/static/*filepath", prometheus.InstrumentHandler(
"static",
http.FileServer(
&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, AssetInfo: AssetInfo},
),
))
statusHandler := prometheus.InstrumentHandlerFunc("status", handler.Status(ms, Asset, flags))
r.Handler("GET", "/status", statusHandler)
r.Handler("GET", "/", statusHandler)
// Re-enable pprof.
r.GET("/debug/pprof/*pprof", handlePprof)
log.Infof("Listening on %s.", *listenAddress)
l, err := net.Listen("tcp", *listenAddress)
if err != nil {
log.Fatal(err)
}
go interruptHandler(l)
err = (&http.Server{Addr: *listenAddress, Handler: r}).Serve(l)
log.Errorln("HTTP server stopped:", err)
// To give running connections a chance to submit their payload, we wait
// for 1sec, but we don't want to wait long (e.g. until all connections
// are done) to not delay the shutdown.
time.Sleep(time.Second)
if err := ms.Shutdown(); err != nil {
log.Errorln("Problem shutting down metric storage:", err)
}
}