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			123 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			123 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
package observability
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import (
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	"net/http"
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	"net/http/httptest"
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	"testing"
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	"time"
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	"github.com/stretchr/testify/require"
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	ptypes "github.com/traefik/paerser/types"
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	"github.com/traefik/traefik/v3/pkg/middlewares/capture"
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	"github.com/traefik/traefik/v3/pkg/observability/metrics"
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	otypes "github.com/traefik/traefik/v3/pkg/observability/types"
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	"go.opentelemetry.io/otel/attribute"
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	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
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	"go.opentelemetry.io/otel/sdk/metric/metricdata"
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	"go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest"
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)
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func TestSemConvServerMetrics(t *testing.T) {
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	tests := []struct {
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		desc           string
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		statusCode     int
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		wantAttributes attribute.Set
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	}{
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		{
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			desc:       "not found status",
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			statusCode: http.StatusNotFound,
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			wantAttributes: attribute.NewSet(
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				attribute.Key("error.type").String("404"),
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				attribute.Key("http.request.method").String("GET"),
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				attribute.Key("http.response.status_code").Int(404),
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				attribute.Key("network.protocol.name").String("http/1.1"),
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				attribute.Key("network.protocol.version").String("1.1"),
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				attribute.Key("server.address").String("www.test.com"),
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				attribute.Key("url.scheme").String("http"),
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			),
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		},
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		{
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			desc:       "created status",
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			statusCode: http.StatusCreated,
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			wantAttributes: attribute.NewSet(
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				attribute.Key("http.request.method").String("GET"),
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				attribute.Key("http.response.status_code").Int(201),
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				attribute.Key("network.protocol.name").String("http/1.1"),
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				attribute.Key("network.protocol.version").String("1.1"),
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				attribute.Key("server.address").String("www.test.com"),
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				attribute.Key("url.scheme").String("http"),
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			),
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		},
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	}
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	for _, test := range tests {
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		t.Run(test.desc, func(t *testing.T) {
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			t.Parallel()
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			var cfg otypes.OTLP
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			(&cfg).SetDefaults()
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			cfg.AddRoutersLabels = true
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			cfg.PushInterval = ptypes.Duration(10 * time.Millisecond)
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			rdr := sdkmetric.NewManualReader()
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			meterProvider := sdkmetric.NewMeterProvider(sdkmetric.WithReader(rdr))
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			// force the meter provider with manual reader to collect metrics for the test.
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			metrics.SetMeterProvider(meterProvider)
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			semConvMetricRegistry, err := metrics.NewSemConvMetricRegistry(t.Context(), &cfg)
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			require.NoError(t, err)
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			require.NotNil(t, semConvMetricRegistry)
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			req := httptest.NewRequest(http.MethodGet, "http://www.test.com/search?q=Opentelemetry", nil)
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			rw := httptest.NewRecorder()
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			req.RemoteAddr = "10.0.0.1:1234"
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			req.Header.Set("User-Agent", "entrypoint-test")
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			req.Header.Set("X-Forwarded-Proto", "http")
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			next := http.HandlerFunc(func(rw http.ResponseWriter, _ *http.Request) {
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				rw.WriteHeader(test.statusCode)
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			})
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			handler := newServerMetricsSemConv(t.Context(), semConvMetricRegistry, next)
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			handler, err = capture.Wrap(handler)
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			require.NoError(t, err)
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			// Injection of the observability variables in the request context.
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			handler = WithObservabilityHandler(handler, Observability{
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				SemConvMetricsEnabled: true,
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			})
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			handler.ServeHTTP(rw, req)
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			got := metricdata.ResourceMetrics{}
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			err = rdr.Collect(t.Context(), &got)
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			require.NoError(t, err)
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			require.Len(t, got.ScopeMetrics, 1)
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			expected := metricdata.Metrics{
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				Name:        "http.server.request.duration",
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				Description: "Duration of HTTP server requests.",
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				Unit:        "s",
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				Data: metricdata.Histogram[float64]{
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					DataPoints: []metricdata.HistogramDataPoint[float64]{
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						{
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							Attributes:   test.wantAttributes,
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							Count:        1,
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							Bounds:       []float64{0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10},
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							BucketCounts: []uint64{0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
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							Min:          metricdata.NewExtrema[float64](1),
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							Max:          metricdata.NewExtrema[float64](1),
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							Sum:          1,
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						},
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					},
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					Temporality: metricdata.CumulativeTemporality,
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				},
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			}
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			metricdatatest.AssertEqual[metricdata.Metrics](t, expected, got.ScopeMetrics[0].Metrics[0], metricdatatest.IgnoreTimestamp(), metricdatatest.IgnoreValue())
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		})
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	}
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}
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