package metrics import ( "context" "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/dogstatsd" ) var datadogClient = dogstatsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error { log.WithoutContext().WithField(log.MetricsProviderName, "datadog").Info(keyvals) return nil })) var datadogTicker *time.Ticker // Metric names consistent with https://github.com/DataDog/integrations-extras/pull/64 const ( ddMetricsBackendReqsName = "backend.request.total" ddMetricsBackendLatencyName = "backend.request.duration" ddRetriesTotalName = "backend.retries.total" ddConfigReloadsName = "config.reload.total" ddConfigReloadsFailureTagName = "failure" ddLastConfigReloadSuccessName = "config.reload.lastSuccessTimestamp" ddLastConfigReloadFailureName = "config.reload.lastFailureTimestamp" ddEntrypointReqsName = "entrypoint.request.total" ddEntrypointReqDurationName = "entrypoint.request.duration" ddEntrypointOpenConnsName = "entrypoint.connections.open" ddOpenConnsName = "backend.connections.open" ddServerUpName = "backend.server.up" ) // RegisterDatadog registers the metrics pusher if this didn't happen yet and creates a datadog Registry instance. func RegisterDatadog(ctx context.Context, config *types.Datadog) Registry { if datadogTicker == nil { datadogTicker = initDatadogClient(ctx, config) } registry := &standardRegistry{ enabled: true, configReloadsCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0), configReloadsFailureCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0).With(ddConfigReloadsFailureTagName, "true"), lastConfigReloadSuccessGauge: datadogClient.NewGauge(ddLastConfigReloadSuccessName), lastConfigReloadFailureGauge: datadogClient.NewGauge(ddLastConfigReloadFailureName), entrypointReqsCounter: datadogClient.NewCounter(ddEntrypointReqsName, 1.0), entrypointReqDurationHistogram: datadogClient.NewHistogram(ddEntrypointReqDurationName, 1.0), entrypointOpenConnsGauge: datadogClient.NewGauge(ddEntrypointOpenConnsName), backendReqsCounter: datadogClient.NewCounter(ddMetricsBackendReqsName, 1.0), backendReqDurationHistogram: datadogClient.NewHistogram(ddMetricsBackendLatencyName, 1.0), backendRetriesCounter: datadogClient.NewCounter(ddRetriesTotalName, 1.0), backendOpenConnsGauge: datadogClient.NewGauge(ddOpenConnsName), backendServerUpGauge: datadogClient.NewGauge(ddServerUpName), } return registry } func initDatadogClient(ctx context.Context, config *types.Datadog) *time.Ticker { address := config.Address if len(address) == 0 { address = "localhost:8125" } pushInterval, err := time.ParseDuration(config.PushInterval) if err != nil { log.FromContext(ctx).Warnf("Unable to parse %s from config.PushInterval: using 10s as the default value", config.PushInterval) pushInterval = 10 * time.Second } report := time.NewTicker(pushInterval) safe.Go(func() { datadogClient.SendLoop(report.C, "udp", address) }) return report } // StopDatadog stops internal datadogTicker which controls the pushing of metrics to DD Agent and resets it to `nil`. func StopDatadog() { if datadogTicker != nil { datadogTicker.Stop() } datadogTicker = nil }