*: add versioned user agent to sentry

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

internal/utils/web/http_tracing.go

@@ -0,0 +1,29 @@
+package web
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/getsentry/sentry-go"
+)
+
+type tracingTransport struct {
+	inner http.RoundTripper
+	ctx   context.Context
+}
+
+func NewTracingTransport(ctx context.Context, inner http.RoundTripper) *tracingTransport {
+	return &tracingTransport{inner, ctx}
+}
+
+func (tt *tracingTransport) RoundTrip(r *http.Request) (*http.Response, error) {
+	span := sentry.StartSpan(tt.ctx, "authentik.go.http_request")
+	r.Header.Set("sentry-trace", span.ToSentryTrace())
+	span.Description = fmt.Sprintf("%s %s", r.Method, r.URL.String())
+	span.SetTag("url", r.URL.String())
+	span.SetTag("method", r.Method)
+	defer span.Finish()
+	res, err := tt.inner.RoundTrip(r.WithContext(span.Context()))
+	return res, err
+}