internal: skip tracing for go healthcheck and metrics endpoints

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

internal/utils/sentry/sentry.go

@@ -0,0 +1,34 @@
+package sentry
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/getsentry/sentry-go"
+)
+
+type contextSentryNoSample struct{}
+
+func SentryNoSample(handler func(rw http.ResponseWriter, r *http.Request)) func(http.ResponseWriter, *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx := context.WithValue(r.Context(), contextSentryNoSample{}, true)
+		handler(w, r.WithContext(ctx))
+	}
+}
+
+func SentryNoSampleMiddleware(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
+		ctx := context.WithValue(r.Context(), contextSentryNoSample{}, true)
+		h.ServeHTTP(rw, r.WithContext(ctx))
+	})
+}
+
+func SamplerFunc(defaultRate float64) sentry.TracesSamplerFunc {
+	return sentry.TracesSamplerFunc(func(ctx sentry.SamplingContext) sentry.Sampled {
+		data, ok := ctx.Span.Context().Value(contextSentryNoSample{}).(bool)
+		if data && ok {
+			return sentry.SampledFalse
+		}
+		return sentry.UniformTracesSampler(defaultRate).Sample(ctx)
+	})
+}