MicroProfile TCK OpenTracing failures
I just stumbled upon this test failure in the TCK run on CI:
```
[ERROR] Failures: 
[ERROR]   OpenTracingClassMethodNameClientTests>Arquillian.run:138->OpenTracingClientBaseTests.testNestedSpans:414->OpenTracingBaseTests.testNestedSpans:385->OpenTracingBaseTests.assertEqualTrees:227 expected [[
  {
    span: "{ operationName: GET:org.eclipse.microprofile.opentracing.tck.application.TestServerWebServices.nested, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=1&nestBreadth=2&async=false&data=201&failNest=false, span.kind=server], logEntries: []}",
    children: [
      {
        span: "{ operationName: GET, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=client], logEntries: []}",
        children: [
          {
            span: "{ operationName: GET:org.eclipse.microprofile.opentracing.tck.application.TestServerWebServices.nested, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=server], logEntries: []}"
          }
        ]
      },
      {
        span: "{ operationName: GET, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=client], logEntries: []}",
        children: [
          {
            span: "{ operationName: GET:org.eclipse.microprofile.opentracing.tck.application.TestServerWebServices.nested, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=server], logEntries: []}"
          }
        ]
      }
    ]
  }
]
] but found [[
  {
    span: "{ operationName: GET, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=client], logEntries: []}",
    children: [
      {
        span: "{ operationName: GET:org.eclipse.microprofile.opentracing.tck.application.TestServerWebServices.nested, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=server], logEntries: []}"
      }
    ]
  },
  {
    span: "{ operationName: GET, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=client], logEntries: []}",
    children: [
      {
        span: "{ operationName: GET:org.eclipse.microprofile.opentracing.tck.application.TestServerWebServices.nested, tags: [component=jaxrs, http.method=GET, http.status_code=200, http.url=http://localhost:8081/rest/testServices/nested?nestDepth=0&nestBreadth=1&async=false&data=201&failNest=false, span.kind=server], logEntries: []}"
      }
    ]
  }
]
]
```

@stuartwdouglas I wonder if it could be related to your changes or not?
diff --git a/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxHttpRequest.java b/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxHttpRequest.java
index 1560a717b0b..a54586a1cfe 100644
--- a/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxHttpRequest.java
+++ b/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxHttpRequest.java
@@ -8,6 +8,7 @@
 import java.util.Iterator;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
 
 import javax.ws.rs.ServiceUnavailableException;
 import javax.ws.rs.container.AsyncResponse;
@@ -262,11 +263,7 @@ public boolean resume(Object entity) {
                         return false;
                     done = true;
                     requestContext.activate(requestContextState);
-                    try {
-                        return internalResume(entity, t -> vertxFlush());
-                    } finally {
-                        requestContext.terminate();
-                    }
+                    return internalResume(entity, new FlushTask());
                 }
             }
 
@@ -279,11 +276,7 @@ public boolean resume(Throwable ex) {
                         return false;
                     done = true;
                     requestContext.activate(requestContextState);
-                    try {
-                        return internalResume(ex, t -> vertxFlush());
-                    } finally {
-                        requestContext.terminate();
-                    }
+                    return internalResume(ex, new FlushTask());
                 }
             }
 
@@ -299,11 +292,7 @@ public boolean cancel() {
                     done = true;
                     cancelled = true;
                     requestContext.activate(requestContextState);
-                    try {
-                        return internalResume(Response.status(Response.Status.SERVICE_UNAVAILABLE).build(), t -> vertxFlush());
-                    } finally {
-                        requestContext.terminate();
-                    }
+                    return internalResume(Response.status(Response.Status.SERVICE_UNAVAILABLE).build(), new FlushTask());
                 }
             }
 
@@ -317,14 +306,10 @@ public boolean cancel(int retryAfter) {
                     done = true;
                     cancelled = true;
                     requestContext.activate(requestContextState);
-                    try {
-                        return internalResume(
-                                Response.status(Response.Status.SERVICE_UNAVAILABLE).header(HttpHeaders.RETRY_AFTER, retryAfter)
-                                        .build(),
-                                t -> vertxFlush());
-                    } finally {
-                        requestContext.terminate();
-                    }
+                    return internalResume(
+                            Response.status(Response.Status.SERVICE_UNAVAILABLE).header(HttpHeaders.RETRY_AFTER, retryAfter)
+                                    .build(),
+                            new FlushTask());
                 }
             }
 
@@ -393,6 +378,17 @@ protected void handleTimeout() {
                     return;
                 resume(new ServiceUnavailableException());
             }
+
+            private class FlushTask implements Consumer<Throwable> {
+                @Override
+                public void accept(Throwable t) {
+                    try {
+                        requestContext.terminate();
+                    } finally {
+                        VertxHttpAsyncResponse.this.vertxFlush();
+                    }
+                }
+            }
         }
     }
 }
diff --git a/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxRequestHandler.java b/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxRequestHandler.java
index d57c8a4563e..d676b8ab814 100644
--- a/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxRequestHandler.java
+++ b/extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxRequestHandler.java
@@ -117,20 +117,17 @@ private void dispatch(RoutingContext routingContext, InputStream is, VertxOutput
 
             boolean suspended = vertxRequest.getAsyncContext().isSuspended();
             boolean requestContextActive = requestContext.isActive();
-            if (requestContextActive) {
-                //it is possible that there was an async response, that then finished in the same thread
-                //the async response will have terminated the request context in this case
-                currentVertxRequest.initialInvocationComplete(suspended);
-            }
             if (!suspended) {
                 try {
-                    vertxResponse.finish();
-                } catch (IOException e) {
-                    log.error("Unexpected failure", e);
-                } finally {
                     if (requestContextActive) {
                         requestContext.terminate();
                     }
+                } finally {
+                    try {
+                        vertxResponse.finish();
+                    } catch (IOException e) {
+                        log.debug("IOException writing JAX-RS response", e);
+                    }
                 }
             } else {
                 //we need the request context to stick around
diff --git a/extensions/smallrye-opentracing/deployment/src/test/java/io/quarkus/smallrye/opentracing/deployment/TracingTest.java b/extensions/smallrye-opentracing/deployment/src/test/java/io/quarkus/smallrye/opentracing/deployment/TracingTest.java
index 1fb5563107f..9ab1d26d7b9 100644
--- a/extensions/smallrye-opentracing/deployment/src/test/java/io/quarkus/smallrye/opentracing/deployment/TracingTest.java
+++ b/extensions/smallrye-opentracing/deployment/src/test/java/io/quarkus/smallrye/opentracing/deployment/TracingTest.java
@@ -1,9 +1,7 @@
 package io.quarkus.smallrye.opentracing.deployment;
 
 import java.util.List;
-import java.util.Set;
 import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
 
 import org.awaitility.Awaitility;
 import org.jboss.shrinkwrap.api.ShrinkWrap;
@@ -48,15 +46,13 @@ public static void afterAll() {
     }
 
     @Test
-    public void testSingleServerRequest() throws InterruptedException {
+    public void testSingleServerRequest() {
         try {
             RestAssured.defaultParser = Parser.TEXT;
             RestAssured.when().get("/hello")
                     .then()
                     .statusCode(200);
-            //inherently racy, tracer is completed after response is sent back to the client
-            Awaitility.await().atMost(5, TimeUnit.SECONDS)
-                    .until(() -> mockTracer.finishedSpans().size() == 1);
+            Assertions.assertEquals(1, mockTracer.finishedSpans().size());
             Assertions.assertEquals("GET:io.quarkus.smallrye.opentracing.deployment.TestResource.hello",
                     mockTracer.finishedSpans().get(0).operationName());
         } finally {
@@ -65,15 +61,12 @@ public void testSingleServerRequest() throws InterruptedException {
     }
 
     @Test
-    public void testCDI() throws InterruptedException {
+    public void testCDI() {
         try {
             RestAssured.defaultParser = Parser.TEXT;
             RestAssured.when().get("/cdi")
                     .then()
                     .statusCode(200);
-            //inherently racy, tracer is completed after response is sent back to the client
-            Awaitility.await().atMost(5, TimeUnit.SECONDS)
-                    .until(() -> mockTracer.finishedSpans().size() == 2);
             Assertions.assertEquals(2, mockTracer.finishedSpans().size());
             Assertions.assertEquals("io.quarkus.smallrye.opentracing.deployment.Service.foo",
                     mockTracer.finishedSpans().get(0).operationName());
@@ -85,24 +78,18 @@ public void testCDI() throws InterruptedException {
     }
 
     @Test
-    public void testMPRestClient() throws InterruptedException {
+    public void testMPRestClient() {
         try {
             RestAssured.defaultParser = Parser.TEXT;
             RestAssured.when().get("/restClient")
                     .then()
                     .statusCode(200);
-            //inherently racy, tracer is completed after response is sent back to the client
-            Awaitility.await().atMost(5, TimeUnit.SECONDS)
-                    .until(() -> mockTracer.finishedSpans().size() == 3);
             Assertions.assertEquals(3, mockTracer.finishedSpans().size());
-            //these can come in any order, as the 'hello' span is finished after the request is sent back.
-            //this means the client might have already dealt with the response before the hello span is finished
-            //in practice this means that the spans might be in any order, as they are ordered by the time
-            //they are completed rather than the time they are started
-            Set<String> results = mockTracer.finishedSpans().stream().map(MockSpan::operationName).collect(Collectors.toSet());
-            Assertions.assertTrue(results.contains("GET:io.quarkus.smallrye.opentracing.deployment.TestResource.hello"));
-            Assertions.assertTrue(results.contains("GET"));
-            Assertions.assertTrue(results.contains("GET:io.quarkus.smallrye.opentracing.deployment.TestResource.restClient"));
+            Assertions.assertEquals("GET:io.quarkus.smallrye.opentracing.deployment.TestResource.hello",
+                    mockTracer.finishedSpans().get(0).operationName());
+            Assertions.assertEquals("GET", mockTracer.finishedSpans().get(1).operationName());
+            Assertions.assertEquals("GET:io.quarkus.smallrye.opentracing.deployment.TestResource.restClient",
+                    mockTracer.finishedSpans().get(2).operationName());
         } finally {
             RestAssured.reset();
         }
diff --git a/extensions/smallrye-opentracing/runtime/src/main/java/io/quarkus/smallrye/opentracing/runtime/QuarkusSmallRyeTracingStandaloneVertxDynamicFeature.java b/extensions/smallrye-opentracing/runtime/src/main/java/io/quarkus/smallrye/opentracing/runtime/QuarkusSmallRyeTracingStandaloneVertxDynamicFeature.java
index 2ce0f0b01aa..36c586228f5 100644
--- a/extensions/smallrye-opentracing/runtime/src/main/java/io/quarkus/smallrye/opentracing/runtime/QuarkusSmallRyeTracingStandaloneVertxDynamicFeature.java
+++ b/extensions/smallrye-opentracing/runtime/src/main/java/io/quarkus/smallrye/opentracing/runtime/QuarkusSmallRyeTracingStandaloneVertxDynamicFeature.java
@@ -16,6 +16,7 @@
 import io.opentracing.contrib.jaxrs2.internal.SpanWrapper;
 import io.opentracing.tag.Tags;
 import io.quarkus.vertx.http.runtime.CurrentVertxRequest;
+import io.vertx.core.Handler;
 import io.vertx.ext.web.RoutingContext;
 
 @Provider
@@ -39,31 +40,21 @@ CurrentVertxRequest request() {
 
         @Override
         public void filter(ContainerRequestContext requestContext) throws IOException {
-            request().addRequestDoneListener(new CurrentVertxRequest.Listener() {
+            RoutingContext routingContext = request().getCurrent();
+            routingContext.addHeadersEndHandler(new Handler<Void>() {
                 @Override
-                public void initialInvocationComplete(RoutingContext routingContext, boolean goingAsync) {
+                public void handle(Void event) {
                     SpanWrapper wrapper = routingContext.get(SpanWrapper.PROPERTY_NAME);
                     if (wrapper != null) {
                         wrapper.getScope().close();
+                        Tags.HTTP_STATUS.set(wrapper.get(), routingContext.response().getStatusCode());
+                        if (routingContext.failure() != null) {
+                            addExceptionLogs(wrapper.get(), routingContext.failure());
+                        }
+                        wrapper.finish();
                     }
                 }
-
-                @Override
-                public void responseComplete(RoutingContext routingContext) {
-                    SpanWrapper wrapper = routingContext.get(SpanWrapper.PROPERTY_NAME);
-                    if (wrapper == null) {
-                        return;
-                    }
-
-                    Tags.HTTP_STATUS.set(wrapper.get(), routingContext.response().getStatusCode());
-                    if (routingContext.failure() != null) {
-                        addExceptionLogs(wrapper.get(), routingContext.failure());
-                    }
-                    wrapper.finish();
-
-                }
             });
-
         }
 
         private static void addExceptionLogs(Span span, Throwable throwable) {
diff --git a/extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java b/extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java
index 1537a5b69ea..f9e7394440a 100644
--- a/extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java
+++ b/extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java
@@ -460,7 +460,6 @@ public T call(HttpServerExchange exchange, C context) throws Exception {
                                 if (exchange == null) {
                                     return action.call(exchange, context);
                                 }
-                                boolean vertxFirst = false;
                                 ManagedContext requestContext = beanContainer.requestContext();
                                 if (requestContext.isActive()) {
                                     return action.call(exchange, context);
@@ -469,7 +468,6 @@ public T call(HttpServerExchange exchange, C context) throws Exception {
                                             .getAttachment(REQUEST_CONTEXT);
                                     try {
                                         requestContext.activate(existingRequestContext);
-                                        vertxFirst = existingRequestContext == null;
 
                                         VertxHttpExchange delegate = (VertxHttpExchange) exchange.getDelegate();
                                         RoutingContext rc = (RoutingContext) delegate.getContext();
@@ -479,9 +477,6 @@ public T call(HttpServerExchange exchange, C context) throws Exception {
                                         ServletRequestContext src = exchange
                                                 .getAttachment(ServletRequestContext.ATTACHMENT_KEY);
                                         HttpServletRequestImpl req = src.getOriginalRequest();
-                                        if (vertxFirst) {
-                                            currentVertxRequest.initialInvocationComplete(req.isAsyncStarted());
-                                        }
                                         if (req.isAsyncStarted()) {
                                             exchange.putAttachment(REQUEST_CONTEXT, requestContext.getState());
                                             requestContext.deactivate();
diff --git a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/CurrentVertxRequest.java b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/CurrentVertxRequest.java
index e7dd3617c32..2588f1a1348 100644
--- a/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/CurrentVertxRequest.java
+++ b/extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/CurrentVertxRequest.java
@@ -1,23 +1,14 @@
 package io.quarkus.vertx.http.runtime;
 
-import java.util.ArrayList;
-import java.util.List;
-
-import javax.annotation.PreDestroy;
 import javax.enterprise.context.RequestScoped;
 import javax.enterprise.inject.Produces;
 
-import org.jboss.logging.Logger;
-
 import io.vertx.ext.web.RoutingContext;
 
 @RequestScoped
 public class CurrentVertxRequest {
 
-    private final Logger log = Logger.getLogger(CurrentVertxRequest.class);
-
     public RoutingContext current;
-    private List<Listener> doneListeners;
 
     @Produces
     @RequestScoped
@@ -30,51 +21,4 @@ public CurrentVertxRequest setCurrent(RoutingContext current) {
         return this;
     }
 
-    public void addRequestDoneListener(Listener doneListener) {
-        if (doneListeners == null) {
-            doneListeners = new ArrayList<>();
-        }
-        doneListeners.add(doneListener);
-    }
-
-    public void initialInvocationComplete(boolean goingAsync) {
-
-        if (current == null) {
-            return;
-        }
-        if (doneListeners != null) {
-            for (Listener i : doneListeners) {
-                try {
-                    i.initialInvocationComplete(current, goingAsync);
-                } catch (Throwable t) {
-                    log.errorf(t, "Failed to process invocation listener %s", i);
-                }
-            }
-        }
-    }
-
-    @PreDestroy
-    void done() {
-        if (current == null) {
-            return;
-        }
-        if (doneListeners != null) {
-            for (Listener i : doneListeners) {
-                try {
-                    i.responseComplete(current);
-                } catch (Throwable t) {
-                    log.errorf(t, "Failed to process done listener %s", i);
-                }
-            }
-        }
-    }
-
-    public interface Listener {
-
-        void initialInvocationComplete(RoutingContext routingContext, boolean goingAsync);
-
-        void responseComplete(RoutingContext routingContext);
-
-    }
-
 }
['extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/CurrentVertxRequest.java', 'extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxHttpRequest.java', 'extensions/resteasy/runtime/src/main/java/io/quarkus/resteasy/runtime/standalone/VertxRequestHandler.java', 'extensions/smallrye-opentracing/runtime/src/main/java/io/quarkus/smallrye/opentracing/runtime/QuarkusSmallRyeTracingStandaloneVertxDynamicFeature.java', 'extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java', 'extensions/smallrye-opentracing/deployment/src/test/java/io/quarkus/smallrye/opentracing/deployment/TracingTest.java']