package metrics import ( "net/http" "testing" "time" "github.com/containous/traefik/types" "github.com/stvp/go-udp-testing" ) func TestStatsD(t *testing.T) { udp.SetAddr(":18125") // This is needed to make sure that UDP Listener listens for data a bit longer, otherwise it will quit after a millisecond udp.Timeout = 5 * time.Second statsdRegistry := RegisterStatsd(&types.Statsd{Address: ":18125", PushInterval: "1s"}) defer StopStatsd() if !statsdRegistry.IsEnabled() { t.Errorf("Statsd registry should return true for IsEnabled()") } expected := []string{ // We are only validating counts, as it is nearly impossible to validate latency, since it varies every run "traefik.requests.total:2.000000|c\n", "traefik.backend.retries.total:2.000000|c\n", "traefik.request.duration:10000.000000|ms", } udp.ShouldReceiveAll(t, expected, func() { statsdRegistry.BackendReqsCounter().With("service", "test", "code", string(http.StatusOK), "method", http.MethodGet).Add(1) statsdRegistry.BackendReqsCounter().With("service", "test", "code", string(http.StatusNotFound), "method", http.MethodGet).Add(1) statsdRegistry.BackendRetriesCounter().With("service", "test").Add(1) statsdRegistry.BackendRetriesCounter().With("service", "test").Add(1) statsdRegistry.BackendReqDurationHistogram().With("service", "test", "code", string(http.StatusOK)).Observe(10000) }) }