added sharedresources

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>

jetty-websocket/websocket-core/src/main/java/org/eclipse/jetty/websocket/core/SharedResources.java

@@ -0,0 +1,71 @@
+package org.eclipse.jetty.websocket.core;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+
+import org.eclipse.jetty.io.ByteBufferPool;
+import org.eclipse.jetty.io.MappedByteBufferPool;
+import org.eclipse.jetty.server.handler.ContextHandler;
+import org.eclipse.jetty.util.DecoratedObjectFactory;
+
+public class SharedResources
+{
+    public static SharedResources ensureSharedResources(ServletContext servletContext) throws ServletException
+    {
+        ContextHandler contextHandler = ContextHandler.getContextHandler(servletContext);
+
+        // Ensure a mapping exists
+        SharedResources resources = contextHandler.getBean(SharedResources.class);
+        if (resources == null)
+        {
+            resources = new SharedResources();
+            resources.setContextClassLoader(servletContext.getClassLoader());
+            contextHandler.addBean(resources);
+        }
+
+        return resources;
+    }
+
+    public SharedResources()
+    {
+        this(new WebSocketExtensionRegistry(), new DecoratedObjectFactory(), new MappedByteBufferPool());
+    }
+
+    public SharedResources(WebSocketExtensionRegistry extensionRegistry, DecoratedObjectFactory objectFactory, ByteBufferPool bufferPool)
+    {
+        this.extensionRegistry = extensionRegistry;
+        this.objectFactory = objectFactory;
+        this.bufferPool = bufferPool;
+    }
+
+    private DecoratedObjectFactory objectFactory;
+    private ClassLoader contextClassLoader;
+    private WebSocketExtensionRegistry extensionRegistry;
+    private ByteBufferPool bufferPool;
+
+
+    public ByteBufferPool getBufferPool()
+    {
+        return bufferPool;
+    }
+
+    public void setContextClassLoader(ClassLoader classLoader)
+    {
+        contextClassLoader = classLoader;
+    }
+
+    public ClassLoader getContextClassloader()
+    {
+        return contextClassLoader;
+    }
+
+    public WebSocketExtensionRegistry getExtensionRegistry()
+    {
+        return extensionRegistry;
+    }
+
+    public DecoratedObjectFactory getObjectFactory()
+    {
+        return objectFactory;
+    }
+}