forked from mirrors/statsd_exporter
Refactor startup order to not grab ports when checkConfig is true
Signed-off-by: alexanderritola <alexanderritola@users.noreply.github.com>
This commit is contained in:
parent
cafe6c75b8
commit
175e9a6728
1 changed files with 35 additions and 34 deletions
69
main.go
69
main.go
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@ -295,20 +295,48 @@ func main() {
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cacheOption := mapper.WithCacheType(*cacheType)
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if *statsdListenUDP == "" && *statsdListenTCP == "" && *statsdListenUnixgram == "" {
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level.Error(logger).Log("At least one of UDP/TCP/Unixgram listeners must be specified.")
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os.Exit(1)
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}
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level.Info(logger).Log("msg", "Starting StatsD -> Prometheus Exporter", "version", version.Info())
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level.Info(logger).Log("msg", "Build context", "context", version.BuildContext())
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level.Info(logger).Log("msg", "Accepting StatsD Traffic", "udp", *statsdListenUDP, "tcp", *statsdListenTCP, "unixgram", *statsdListenUnixgram)
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level.Info(logger).Log("msg", "Accepting Prometheus Requests", "addr", *listenAddress)
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events := make(chan event.Events, *eventQueueSize)
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defer close(events)
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eventQueue := event.NewEventQueue(events, *eventFlushThreshold, *eventFlushInterval, eventsFlushed)
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mapper := &mapper.MetricMapper{Registerer: prometheus.DefaultRegisterer, MappingsCount: mappingsCount}
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if *mappingConfig != "" {
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err := mapper.InitFromFile(*mappingConfig, *cacheSize, cacheOption)
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if err != nil {
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level.Error(logger).Log("msg", "error loading config", "error", err)
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os.Exit(1)
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}
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if *dumpFSMPath != "" {
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err := dumpFSM(mapper, *dumpFSMPath, logger)
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if err != nil {
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level.Error(logger).Log("msg", "error dumping FSM", "error", err)
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// Failure to dump the FSM is an error (the user asked for it and it
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// didn't happen) but not fatal (the exporter is fully functional
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// afterwards).
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}
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}
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} else {
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mapper.InitCache(*cacheSize, cacheOption)
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}
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exporter := exporter.NewExporter(prometheus.DefaultRegisterer, mapper, logger, eventsActions, eventsUnmapped, errorEventStats, eventStats, conflictingEventStats, metricsCount)
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if *checkConfig {
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level.Info(logger).Log("msg", "Configuration check successful, exiting")
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return
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}
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level.Info(logger).Log("msg", "Accepting StatsD Traffic", "udp", *statsdListenUDP, "tcp", *statsdListenTCP, "unixgram", *statsdListenUnixgram)
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level.Info(logger).Log("msg", "Accepting Prometheus Requests", "addr", *listenAddress)
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if *statsdListenUDP == "" && *statsdListenTCP == "" && *statsdListenUnixgram == "" {
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level.Error(logger).Log("At least one of UDP/TCP/Unixgram listeners must be specified.")
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os.Exit(1)
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}
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if *statsdListenUDP != "" {
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udpListenAddr, err := address.UDPAddrFromString(*statsdListenUDP)
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if err != nil {
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@ -438,33 +466,6 @@ func main() {
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}
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mapper := &mapper.MetricMapper{Registerer: prometheus.DefaultRegisterer, MappingsCount: mappingsCount}
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if *mappingConfig != "" {
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err := mapper.InitFromFile(*mappingConfig, *cacheSize, cacheOption)
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if err != nil {
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level.Error(logger).Log("msg", "error loading config", "error", err)
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os.Exit(1)
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}
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if *dumpFSMPath != "" {
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err := dumpFSM(mapper, *dumpFSMPath, logger)
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if err != nil {
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level.Error(logger).Log("msg", "error dumping FSM", "error", err)
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// Failure to dump the FSM is an error (the user asked for it and it
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// didn't happen) but not fatal (the exporter is fully functional
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// afterwards).
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}
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}
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} else {
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mapper.InitCache(*cacheSize, cacheOption)
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}
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exporter := exporter.NewExporter(prometheus.DefaultRegisterer, mapper, logger, eventsActions, eventsUnmapped, errorEventStats, eventStats, conflictingEventStats, metricsCount)
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if *checkConfig {
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level.Info(logger).Log("msg", "Configuration check successful, exiting")
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return
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}
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mux := http.NewServeMux()
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mux.Handle(*metricsEndpoint, promhttp.Handler())
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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