fixes

internal/features/features.go

@@ -31,17 +31,19 @@ type Event struct {
 	Message          string
 	SpanName         string
 	Route            string
+	Host             string // request host (Host / :authority), used to find the ingress rule behind an edge error
 	StatusCode       int
 	ExceptionType    string
 
 	// Trace-resolved context (see internal/tracectx). All optional: zero
 	// values mean "not resolved", which behaves like the pre-resolution data.
-	ClientIP    string // real client behind proxy hops, when known
-	UAClass     string // internal/uaclass class of the User-Agent
-	IsDuplicate bool   // repeats an ancestor span's failure; not a new request
-	IsRootCause bool   // error span with no erroring child
-	HasUpstream bool   // an ingress span that had a child in another service
-	BadActor    string // reason this event is attributed to a bad actor (see MarkBadActors); empty if not
+	ClientIP      string   // real client behind proxy hops, when known
+	UAClass       string   // internal/uaclass class of the User-Agent
+	IsDuplicate   bool     // repeats an ancestor span's failure; not a new request
+	IsRootCause   bool     // error span with no erroring child
+	HasUpstream   bool     // an ingress span that had a child in another service
+	TraceServices []string // every service with an error span in this event's trace (includes its own)
+	BadActor      string   // reason this event is attributed to a bad actor (see MarkBadActors); empty if not
 }
 
 // Config controls feature and label windows. A zero Config receives the