Update sentry reporting (#3305)

This hopefully reduces the garbage we currently produce.
(Using [GlitchTip](https://glitchtip.com/) on my personal instance, this
seems to look better)

5 files changed, 16 insertions, 7 deletions

diff --git a/federationapi/routing/routing.go b/federationapi/routing/routing.go
index dc7a363e..6328d165 100644
--- a/federationapi/routing/routing.go
+++ b/federationapi/routing/routing.go
@@ -647,6 +647,8 @@ func MakeFedAPI(
 		// add the user to Sentry, if enabled
 		hub := sentry.GetHubFromContext(req.Context())
 		if hub != nil {
+			// clone the hub, so we don't send garbage events with e.g. mismatching rooms/event_ids
+			hub = hub.Clone()
 			hub.Scope().SetTag("origin", string(fedReq.Origin()))
 			hub.Scope().SetTag("uri", fedReq.RequestURI())
 		}
diff --git a/internal/httputil/httpapi.go b/internal/httputil/httpapi.go
index 1966e754..c78aadf8 100644
--- a/internal/httputil/httpapi.go
+++ b/internal/httputil/httpapi.go
@@ -76,6 +76,8 @@ func MakeAuthAPI(
 		// add the user to Sentry, if enabled
 		hub := sentry.GetHubFromContext(req.Context())
 		if hub != nil {
+			// clone the hub, so we don't send garbage events with e.g. mismatching rooms/event_ids
+			hub = hub.Clone()
 			hub.Scope().SetUser(sentry.User{
 				Username: device.UserID,
 			})
diff --git a/relayapi/routing/routing.go b/relayapi/routing/routing.go
index f11b0a7c..92476d6c 100644
--- a/relayapi/routing/routing.go
+++ b/relayapi/routing/routing.go
@@ -108,6 +108,8 @@ func MakeRelayAPI(
 		// add the user to Sentry, if enabled
 		hub := sentry.GetHubFromContext(req.Context())
 		if hub != nil {
+			// clone the hub, so we don't send garbage events with e.g. mismatching rooms/event_ids
+			hub = hub.Clone()
 			hub.Scope().SetTag("origin", string(fedReq.Origin()))
 			hub.Scope().SetTag("uri", fedReq.RequestURI())
 		}
diff --git a/roomserver/internal/input/input.go b/roomserver/internal/input/input.go
index 20d2cfc7..104ce94e 100644
--- a/roomserver/internal/input/input.go
+++ b/roomserver/internal/input/input.go
@@ -108,12 +108,14 @@ type worker struct {
 	r            *Inputer
 	roomID       string
 	subscription *nats.Subscription
+	sentryHub    *sentry.Hub
 }
 
 func (r *Inputer) startWorkerForRoom(roomID string) {
 	v, loaded := r.workers.LoadOrStore(roomID, &worker{
-		r:      r,
-		roomID: roomID,
+		r:         r,
+		roomID:    roomID,
+		sentryHub: sentry.CurrentHub().Clone(),
 	})
 	w := v.(*worker)
 	w.Lock()
@@ -265,9 +267,9 @@ func (w *worker) _next() {
 	// Look up what the next event is that's waiting to be processed.
 	ctx, cancel := context.WithTimeout(w.r.ProcessContext.Context(), time.Minute)
 	defer cancel()
-	if scope := sentry.CurrentHub().Scope(); scope != nil {
+	w.sentryHub.ConfigureScope(func(scope *sentry.Scope) {
 		scope.SetTag("room_id", w.roomID)
-	}
+	})
 	msgs, err := w.subscription.Fetch(1, nats.Context(ctx))
 	switch err {
 	case nil:
@@ -323,9 +325,9 @@ func (w *worker) _next() {
 		return
 	}
 
-	if scope := sentry.CurrentHub().Scope(); scope != nil {
+	w.sentryHub.ConfigureScope(func(scope *sentry.Scope) {
 		scope.SetTag("event_id", inputRoomEvent.Event.EventID())
-	}
+	})
 
 	// Process the room event. If something goes wrong then we'll tell
 	// NATS to terminate the message. We'll store the error result as
@@ -347,7 +349,7 @@ func (w *worker) _next() {
 			}).Warn("Roomserver rejected event")
 		default:
 			if !errors.Is(err, context.DeadlineExceeded) && !errors.Is(err, context.Canceled) {
-				sentry.CaptureException(err)
+				w.sentryHub.CaptureException(err)
 			}
 			logrus.WithError(err).WithFields(logrus.Fields{
 				"room_id":  w.roomID,
diff --git a/roomserver/internal/input/input_latest_events.go b/roomserver/internal/input/input_latest_events.go
index ec03d6f1..e9856cc5 100644
--- a/roomserver/internal/input/input_latest_events.go
+++ b/roomserver/internal/input/input_latest_events.go
@@ -298,6 +298,7 @@ func (u *latestEventsUpdater) latestState() error {
 		}).Warnf("State reset detected (removing %d events)", removed)
 		sentry.WithScope(func(scope *sentry.Scope) {
 			scope.SetLevel("warning")
+			scope.SetTag("room_id", u.event.RoomID().String())
 			scope.SetContext("State reset", map[string]interface{}{
 				"Event ID":      u.event.EventID(),
 				"Old state NID": fmt.Sprintf("%d", u.oldStateNID),