diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/ws/transport/http/HttpMetadataPublisher.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/ws/transport/http/HttpMetadataPublisher.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.xml.internal.ws.transport.http;
+
+import com.sun.istack.internal.NotNull;
+import com.sun.xml.internal.ws.api.Component;
+import com.sun.xml.internal.ws.api.server.WSEndpoint;
+
+import java.io.IOException;
+
+/**
+ * Intercepts GET HTTP requests to process the requests.
+ *
+ * <p>
+ * {@link HttpAdapter} looks for this SPI in {@link WSEndpoint#getComponents()}
+ * to allow components to expose additional information through HTTP.
+ *
+ * @author Kohsuke Kawaguchi
+ * @see Component#getSPI(Class)
+ * @since 2.1.2
+ */
+public abstract class HttpMetadataPublisher {
+    /**
+     * When {@link HttpAdapter} receives a GET request with a query string
+     * (which is a convention for metadata requests, such as '?wsdl' or '?xsd=...'),
+     * then this method is invoked to allow components to intercept the request.
+     *
+     * @param adapter
+     *      Adapter that accepted the connection.
+     * @param connection
+     *      Represents the current connection.
+     * @return
+     *      true if the request is processed. If false is returned the default processing kicks in.
+     */
+    public abstract boolean handleMetadataRequest(@NotNull HttpAdapter adapter, @NotNull WSHTTPConnection connection) throws IOException;
+}