package middlewares 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" "github.com/go-kit/kit/metrics/dogstatsd" ) var _ Metrics = (Metrics)(nil) var datadogClient = dogstatsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error { log.Info(keyvals) return nil })) var datadogTicker *time.Ticker // Metric names consistent with https://github.com/DataDog/integrations-extras/pull/64 const ( ddMetricsReqsName = "requests.total" ddMetricsLatencyName = "request.duration" ) // Datadog is an Implementation for Metrics that exposes datadog metrics for the latency // and the number of requests partitioned by status code and method. // - number of requests partitioned by status code and method // - request durations // - amount of retries happened type Datadog struct { reqsCounter metrics.Counter reqDurationHistogram metrics.Histogram retryCounter metrics.Counter } func (dd *Datadog) getReqsCounter() metrics.Counter { return dd.reqsCounter } func (dd *Datadog) getReqDurationHistogram() metrics.Histogram { return dd.reqDurationHistogram } func (dd *Datadog) getRetryCounter() metrics.Counter { return dd.retryCounter } // NewDataDog creates new instance of Datadog func NewDataDog(name string) *Datadog { var m Datadog m.reqsCounter = datadogClient.NewCounter(ddMetricsReqsName, 1.0).With("service", name) m.reqDurationHistogram = datadogClient.NewHistogram(ddMetricsLatencyName, 1.0).With("service", name) return &m } // InitDatadogClient initializes metrics pusher and creates a datadogClient if not created already func InitDatadogClient(config *types.Datadog) *time.Ticker { if datadogTicker == nil { 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() { datadogClient.SendLoop(report.C, "udp", address) }) datadogTicker = report } return datadogTicker } // StopDatadogClient stops internal datadogTicker which controls the pushing of metrics to DD Agent and resets it to `nil` func StopDatadogClient() { if datadogTicker != nil { datadogTicker.Stop() } datadogTicker = nil }