Make the JavaxWebSocketClientContainer.getContainer(HttpClient) method static.

jetty-util/src/main/java/org/eclipse/jetty/util/component/Container.java

@@ -152,6 +152,46 @@ default List<EventListener> getEventListeners()
         return Collections.unmodifiableList(new ArrayList<>(getBeans(EventListener.class)));
     }
 
+    /**
+     * A utility method to add a bean to a container.
+     * @param parent the parent container.
+     * @param child the child bean.
+     * @return true if the child was added as a bean, false if parent was not instance of {@link Container} or bean was already present.
+     */
+    static boolean addBean(Object parent, Object child)
+    {
+        if (parent instanceof Container)
+            return ((Container)parent).addBean(child);
+        return false;
+    }
+
+    /**
+     * A utility method to add a bean to a container.
+     * @param parent the parent container.
+     * @param child the child bean.
+     * @param managed whether to managed the lifecycle of the bean.
+     * @return true if the child was added as a bean, false if parent was not instance of {@link Container} or bean was already present.
+     */
+    static boolean addBean(Object parent, Object child, boolean managed)
+    {
+        if (parent instanceof Container)
+            return ((Container)parent).addBean(child, managed);
+        return false;
+    }
+
+    /**
+     * A utility method to remove a bean from a container.
+     * @param parent the parent container.
+     * @param child the child bean.
+     * @return true if parent was an instance of {@link Container} and the bean was removed.
+     */
+    static boolean removeBean(Object parent, Object child)
+    {
+        if (parent instanceof Container)
+            return ((Container)parent).removeBean(child);
+        return false;
+    }
+
     /**
      * A listener for Container events.
      * If an added bean implements this interface it will receive the events

jetty-util/src/main/java/org/eclipse/jetty/util/component/ContainerLifeCycle.java

@@ -474,9 +474,9 @@ public boolean addEventListener(EventListener listener)
                     if (listener instanceof InheritedListener && b.isManaged() && b._bean instanceof Container)
                     {
                         if (b._bean instanceof ContainerLifeCycle)
-                            ((ContainerLifeCycle)b._bean).addBean(listener, false);
+                            Container.addBean(b._bean, listener, false);
                         else
-                            ((Container)b._bean).addBean(listener);
+                            Container.addBean(b._bean, listener);
                     }
                 }
             }
@@ -499,8 +499,8 @@ public boolean removeEventListener(EventListener listener)
                 {
                     cl.beanRemoved(this, b._bean);
 
-                    if (listener instanceof InheritedListener && b.isManaged() && b._bean instanceof Container)
-                        ((Container)b._bean).removeBean(listener);
+                    if (listener instanceof InheritedListener && b.isManaged())
+                        Container.removeBean(b._bean, listener);
                 }
             }
             return true;
@@ -541,9 +541,9 @@ private void manage(Bean bean)
                     if (l instanceof InheritedListener)
                     {
                         if (bean._bean instanceof ContainerLifeCycle)
-                            ((ContainerLifeCycle)bean._bean).addBean(l, false);
+                            Container.addBean(bean._bean, l, false);
                         else
-                            ((Container)bean._bean).addBean(l);
+                            Container.addBean(bean._bean, l);
                     }
                 }
             }
@@ -579,7 +579,7 @@ private void unmanage(Bean bean)
                 for (Container.Listener l : _listeners)
                 {
                     if (l instanceof InheritedListener)
-                        ((Container)bean._bean).removeBean(l);
+                        Container.removeBean(bean._bean, l);
                 }
             }
             bean._managed = Managed.UNMANAGED;

jetty-websocket/websocket-javax-client/pom.xml

@@ -45,6 +45,17 @@
       <version>${project.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.eclipse.jetty</groupId>
+      <artifactId>jetty-jmx</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.eclipse.jetty</groupId>
+      <artifactId>jetty-slf4j-impl</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

jetty-websocket/websocket-javax-client/src/main/java/org/eclipse/jetty/websocket/javax/client/JavaxWebSocketClientContainerProvider.java

@@ -60,7 +60,7 @@ protected WebSocketContainer getContainer()
      * @param httpClient a pre-configured {@link HttpClient} to be used by the implementation.
      * @see #getContainer()
      */
-    public WebSocketContainer getContainer(HttpClient httpClient)
+    public static WebSocketContainer getContainer(HttpClient httpClient)
     {
         JavaxWebSocketClientContainer clientContainer = new JavaxWebSocketClientContainer(httpClient);
         // See: https://github.com/eclipse-ee4j/websocket-api/issues/212

jetty-websocket/websocket-javax-client/src/test/java/examples/SecureClientContainerExample.java

@@ -13,6 +13,7 @@
 
 package examples;
 
+import java.lang.management.ManagementFactory;
 import java.net.URI;
 import java.util.concurrent.TimeUnit;
 import javax.websocket.ClientEndpointConfig;
@@ -21,9 +22,11 @@
 import org.eclipse.jetty.client.HttpClient;
 import org.eclipse.jetty.client.http.HttpClientTransportOverHTTP;
 import org.eclipse.jetty.io.ClientConnector;
+import org.eclipse.jetty.jmx.MBeanContainer;
+import org.eclipse.jetty.util.component.Container;
 import org.eclipse.jetty.util.component.LifeCycle;
 import org.eclipse.jetty.util.ssl.SslContextFactory;
-import org.eclipse.jetty.websocket.javax.client.internal.JavaxWebSocketClientContainer;
+import org.eclipse.jetty.websocket.javax.client.JavaxWebSocketClientContainerProvider;
 
 public class SecureClientContainerExample
 {
@@ -76,9 +79,12 @@ public static WebSocketContainer getConfiguredWebSocketContainer() throws Except
         clientConnector.setSslContextFactory(ssl);
 
         HttpClient httpClient = new HttpClient(new HttpClientTransportOverHTTP(clientConnector));
-        JavaxWebSocketClientContainer clientContainer = new JavaxWebSocketClientContainer(httpClient);
-        clientContainer.addManaged(httpClient); // allow clientContainer to own httpClient (for start/stop lifecycle)
-        clientContainer.start();
+        WebSocketContainer clientContainer = JavaxWebSocketClientContainerProvider.getContainer(httpClient);
+
+        // Components can be added as a bean to the WebSocketContainer with the Container static method.
+        MBeanContainer mbeanContainer = new MBeanContainer(ManagementFactory.getPlatformMBeanServer());
+        Container.addBean(clientContainer, mbeanContainer);
+
         return clientContainer;
     }
 }