package metrics import ( "time" "github.com/containous/traefik/log" "github.com/containous/traefik/safe" "github.com/containous/traefik/types" kitlog "github.com/go-kit/kit/log" "github.com/go-kit/kit/metrics/statsd" ) var statsdClient = statsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error { log.Info(keyvals) return nil })) var statsdTicker *time.Ticker const ( statsdMetricsBackendReqsName = "backend.request.total" statsdMetricsBackendLatencyName = "backend.request.duration" statsdRetriesTotalName = "backend.retries.total" statsdConfigReloadsName = "config.reload.total" statsdConfigReloadsFailureName = statsdConfigReloadsName + ".failure" statsdLastConfigReloadSuccessName = "config.reload.lastSuccessTimestamp" statsdLastConfigReloadFailureName = "config.reload.lastFailureTimestamp" statsdEntrypointReqsName = "entrypoint.request.total" statsdEntrypointReqDurationName = "entrypoint.request.duration" statsdEntrypointOpenConnsName = "entrypoint.connections.open" statsdOpenConnsName = "backend.connections.open" statsdServerUpName = "backend.server.up" ) // RegisterStatsd registers the metrics pusher if this didn't happen yet and creates a statsd Registry instance. func RegisterStatsd(config *types.Statsd) Registry { if statsdTicker == nil { statsdTicker = initStatsdTicker(config) } return &standardRegistry{ enabled: true, configReloadsCounter: statsdClient.NewCounter(statsdConfigReloadsName, 1.0), configReloadsFailureCounter: statsdClient.NewCounter(statsdConfigReloadsFailureName, 1.0), lastConfigReloadSuccessGauge: statsdClient.NewGauge(statsdLastConfigReloadSuccessName), lastConfigReloadFailureGauge: statsdClient.NewGauge(statsdLastConfigReloadFailureName), entrypointReqsCounter: statsdClient.NewCounter(statsdEntrypointReqsName, 1.0), entrypointReqDurationHistogram: statsdClient.NewTiming(statsdEntrypointReqDurationName, 1.0), entrypointOpenConnsGauge: statsdClient.NewGauge(statsdEntrypointOpenConnsName), backendReqsCounter: statsdClient.NewCounter(statsdMetricsBackendReqsName, 1.0), backendReqDurationHistogram: statsdClient.NewTiming(statsdMetricsBackendLatencyName, 1.0), backendRetriesCounter: statsdClient.NewCounter(statsdRetriesTotalName, 1.0), backendOpenConnsGauge: statsdClient.NewGauge(statsdOpenConnsName), backendServerUpGauge: statsdClient.NewGauge(statsdServerUpName), } } // initStatsdTicker initializes metrics pusher and creates a statsdClient if not created already func initStatsdTicker(config *types.Statsd) *time.Ticker { address := config.Address if len(address) == 0 { address = "localhost:8125" } pushInterval, err := time.ParseDuration(config.PushInterval) if err != nil { log.Warnf("Unable to parse %s into pushInterval, using 10s as default value", config.PushInterval) pushInterval = 10 * time.Second } report := time.NewTicker(pushInterval) safe.Go(func() { statsdClient.SendLoop(report.C, "udp", address) }) return report } // StopStatsd stops internal statsdTicker which controls the pushing of metrics to StatsD Agent and resets it to `nil` func StopStatsd() { if statsdTicker != nil { statsdTicker.Stop() } statsdTicker = nil }