Inject trace ID into HTML to link JavaScript and Python traces

aleksis/core/templates/core/base.html

@@ -36,6 +36,9 @@
           type="text/javascript"></script>
 
   {% if SENTRY_ENABLED %}
+    {% if SENTRY_TRACE_ID %}
+      <meta name="sentry-trace" content="{{ SENTRY_TRACE_ID }}" />
+    {% endif %}
     {% include_js "Sentry" %}
     {{ SENTRY_SETTINGS|json_script:"sentry_settings" }}
     <script type="text/javascript">

aleksis/core/util/core_helpers.py

@@ -218,6 +218,11 @@ def custom_information_processor(request: HttpRequest) -> dict:
     if settings.SENTRY_ENABLED:
         context["SENTRY_SETTINGS"] = settings.SENTRY_SETTINGS
 
+        import sentry_sdk
+        span = sentry_sdk.Hub.current.scope.span
+        if span is not None:
+            context["SENTRY_TRACE_ID"] = span.to_traceparent()
+
     return context
 
 def now_tomorrow() -> datetime: