Undertow does not shut down properly in webhook route policy

components/camel-undertow/src/main/java/org/apache/camel/component/undertow/UndertowComponent.java

@@ -337,15 +337,23 @@ public HttpHandler registerEndpoint(HttpHandlerRegistrationInfo registrationInfo
 
         host.validateEndpointURI(uri);
         handlers.add(registrationInfo);
+
         return host.registerHandler(registrationInfo, handler);
     }
 
     public void unregisterEndpoint(HttpHandlerRegistrationInfo registrationInfo, SSLContext sslContext) {
         final URI uri = registrationInfo.getUri();
         final UndertowHostKey key = new UndertowHostKey(uri.getHost(), uri.getPort(), sslContext);
         final UndertowHost host = undertowRegistry.get(key);
+
         handlers.remove(registrationInfo);
-        host.unregisterHandler(registrationInfo);
+
+        // if the route is not automatically started, then the undertow registry
+        // may not have any instance of UndertowHost associated to the given
+        // registrationInfo
+        if (host != null) {
+            host.unregisterHandler(registrationInfo);
+        }
     }
 
     protected UndertowHost createUndertowHost(UndertowHostKey key) {

components/camel-undertow/src/test/java/org/apache/camel/component/undertow/UndertowNoAutoStartupTest.java

@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.component.undertow;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.Test;
+
+public class UndertowNoAutoStartupTest extends BaseUndertowTest {
+    @Test
+    public void testUndertow() throws Exception {
+    }
+
+    @Override
+    protected RouteBuilder createRouteBuilder() throws Exception {
+        return new RouteBuilder() {
+            public void configure() {
+                from("undertow:http://localhost:{{port}}/myapp")
+                    .autoStartup(false)
+                    .to("mock:myapp");
+            }
+        };
+    }
+}