outpost: add tracing for http client

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

internal/outpost/ak/tracing.go

@@ -0,0 +1,23 @@
+package ak
+
+import (
+	"net/http"
+
+	"github.com/getsentry/sentry-go"
+)
+
+type tracingTransport struct {
+	inner http.RoundTripper
+}
+
+func NewTracingTransport(inner http.RoundTripper) *tracingTransport {
+	return &tracingTransport{inner}
+}
+
+func (tt *tracingTransport) RoundTrip(r *http.Request) (*http.Response, error) {
+	span := sentry.StartSpan(r.Context(), "authentik.go.http_request")
+	span.SetTag("url", r.URL.String())
+	span.SetTag("method", r.Method)
+	defer span.Finish()
+	return tt.inner.RoundTrip(r.WithContext(span.Context()))
+}