Define earlier

Author: sarahchen6

dd-java-agent/instrumentation/vertx/vertx-web/vertx-web-3.4/src/main/java/datadog/trace/instrumentation/vertx_3_4/server/RouteHandlerWrapper.java

@@ -42,6 +42,9 @@ public void handle(final RoutingContext routingContext) {
     if (spanStarter) {
       if (span == null) {
         AgentSpan parentSpan = activeSpan();
+        if (parentSpan != null) {
+          parentSpan = parentSpan.getLocalRootSpan();
+        }
         routingContext.put(PARENT_SPAN_CONTEXT_KEY, parentSpan);
 
         span = startSpan(INSTRUMENTATION_NAME);
@@ -69,7 +72,7 @@ private void setRoute(RoutingContext routingContext) {
       return;
     }
 
-    final AgentSpan routeSpan = parentSpan.getLocalRootSpan();
+    final AgentSpan routeSpan = parentSpan;
 
     final String method = routingContext.request().rawMethod();
     String mountPoint = routingContext.mountPoint();

dd-java-agent/instrumentation/vertx/vertx-web/vertx-web-4.0/src/main/java/datadog/trace/instrumentation/vertx_4_0/server/RouteHandlerWrapper.java

@@ -38,6 +38,9 @@ public void handle(final RoutingContext routingContext) {
     if (spanStarter) {
       if (span == null) {
         AgentSpan parentSpan = activeSpan();
+        if (parentSpan != null) {
+          parentSpan = parentSpan.getLocalRootSpan();
+        }
         routingContext.put(PARENT_SPAN_CONTEXT_KEY, parentSpan);
 
         span = startSpan(INSTRUMENTATION_NAME);
@@ -66,7 +69,7 @@ private void setRoute(RoutingContext routingContext) {
       return;
     }
 
-    final AgentSpan routeSpan = parentSpan.getLocalRootSpan();
+    final AgentSpan routeSpan = parentSpan;
 
     final String method = routingContext.request().method().name();
     final String mountPoint = routingContext.mountPoint();