/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
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*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
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* Version 2] license." If you don't indicate a single choice of license, a
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* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
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*/
/* CVS information
* $Header: /cvs/glassfish/jmx-remote/rjmx-impl/src/java/com/sun/enterprise/admin/jmx/remote/server/servlet/RemoteJmxConnectorServlet.java,v 1.5 2007/05/05 05:36:31 tcfujii Exp $
* $Revision: 1.5 $
* $Date: 2007/05/05 05:36:31 $
*/
package com.sun.enterprise.admin.jmx.remote.server.servlet;
import java.io.*;
import java.util.logging.Logger;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.management.remote.message.Message;
import javax.management.remote.message.MBeanServerRequestMessage;
import javax.management.remote.message.MBeanServerResponseMessage;
/* BEGIN -- S1WS_MOD */
import com.sun.enterprise.admin.jmx.remote.DefaultConfiguration;
import com.sun.enterprise.admin.jmx.remote.streams.*;
import com.sun.enterprise.admin.jmx.remote.server.MBeanServerRequestHandler;
/* END -- S1WS_MOD */
/** The crux of server side implementation of JSR 160 over HTTP. This is the
* single servlet that provides the entire support. The configuration is
* provided by the standard deployment descriptor in web.xml. The most notable
* support is that of the security-constraint. The algorithm that
* {@link #doGet} of this Servlet employs is pretty straightforward:
* <ul>
* <li> Read the object from the ObjectInputStream backed by its own InputStream </li>
* <li> Carefully deserialize the Object depending upon the static classpath and other classes known. In other words, no dynamic class loading is used.</li>
* <li> Take care of the versioning information </li>
* <li> Invoke a handler to return a result of MBeanServerConnection invocation </li>
* <li> Configure the HTTP Response Headers </li>
* <li> Write the result to the ObjectOutputStream backed by its own OutputStream </li>
* </ul>
*
* @author Kedar Mhaswade
* @version 1.0
*/
public class RemoteJmxConnectorServlet extends HttpServlet {
private MBeanServerRequestHandler requestHandler;
private final String BINARY_DATA_TYPE = "application/octet-stream";
/* BEGIN -- S1WS_MOD */
private static final Logger logger = Logger.getLogger(
DefaultConfiguration.JMXCONNECTOR_LOGGER);/*,
DefaultConfiguration.LOGGER_RESOURCE_BUNDLE_NAME );*/
/* END -- S1WS_MOD */
/** Initializes the servlet.
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
/* BEGIN -- S1WS_MOD */
// requestHandler = new MBeanServerRequestHandler();
requestHandler = new MBeanServerRequestHandler(config);
/* END -- S1WS_MOD */
}
/** Destroys the servlet.
*/
public void destroy() {
/* BEGIN -- S1WS_MOD */
requestHandler.getNotificationManager().close();
/* END -- S1WS_MOD */
}
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
/* BEGIN -- S1WS_MOD */
String pathInfo = request.getPathInfo();
if (pathInfo != null && pathInfo.trim().equals(DefaultConfiguration.NOTIF_MGR_PATHINFO)) {
requestHandler.getNotificationManager().getNotifications(request, response);
return;
}
/* END -- S1WS_MOD */
final Message requestMessage = readRequestMessage(request);
final Message responseMessage = requestHandler.handle
((MBeanServerRequestMessage)requestMessage);
/* BEGIN -- S1WS_MOD */
drainInputStream(); // Since, in.close only reads byte by byte.
JMXInbandStream.setIncomingStream(null);
MBeanServerResponseMessage tempMsg =
(MBeanServerResponseMessage) responseMessage;
StreamMBeanServerResponseMessage resmsg =
new StreamMBeanServerResponseMessage(
tempMsg.getMessageId(),
tempMsg.getWrappedResult(),
tempMsg.isException());
InputStream in = JMXInbandStream.getOutgoingStream();
if (in != null) {
resmsg.setStreamAvailable(true);
}
OutputStream out = response.getOutputStream();
sendResponseMessage(response, resmsg, out);
if (in != null)
sendStream(in, out, getContentLength(resmsg));
/* END -- S1WS_MOD */
}
catch (ClassNotFoundException ce) {
final String message = "Detailed Message: Error in calling in Servlet:processRequest, actual exception is attached";
throw new ServletException (message, ce);
}
}
/* BEGIN -- S1WS_MOD */
private void drainInputStream() {
InputStream in = JMXInbandStream.getInputStream();
if (in != null) {
byte[] bytes = new byte[8192];
try {
while (in.read(bytes) != -1)
;
} catch (IOException ignore) {
// XXX: Log it
}
}
}
private void sendStream(InputStream in, OutputStream out, int padLen)
throws IOException {
OutputStream o = new JMXChunkedOutputStream(out);
byte[] bytes = new byte[8192];
int len = 0;
while ( (len = in.read(bytes)) != -1) {
o.write(bytes, 0, len);
}
JMXInbandStream.setOutputStream(null, 0);
o.flush();
((JMXChunkedOutputStream)o).writeEOF(padLen);
}
/* END -- S1WS_MOD */
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
private Message readRequestMessage(HttpServletRequest request) throws IOException, ClassNotFoundException {
/* BEGIN -- S1WS_MOD */
JMXInbandStream.setOutputStream(null, 0);
InputStream in = request.getInputStream();
// final ObjectInputStream ois = new ObjectInputStream(
// new BufferedInputStream(request.getInputStream()));
final ObjectInputStream ois = new ObjectInputStream(in);
// new BufferedInputStream(in));
/* END -- S1WS_MOD */
final MBeanServerRequestMessage m =
(MBeanServerRequestMessage) ois.readObject();
/* BEGIN -- S1WS_MOD */
StreamMBeanServerRequestMessage streamm =
(StreamMBeanServerRequestMessage) m;
if (streamm.isStreamAvailable()) {
JMXInbandStream.setIncomingStream(
new JMXChunkedInputStream(in));
}
/* END -- S1WS_MOD */
logger.fine("Method id is: " + m.getMethodId());
return ( m );
}
/* BEGIN -- S1WS_MOD */
// private void sendResponseMessage(HttpServletResponse response, Message message) throws IOException {
private void sendResponseMessage(HttpServletResponse response, Message message, OutputStream out) throws IOException {
/* END -- S1WS_MOD */
configureResponse(response, message);
/* BEGIN -- S1WS_MOD */
// final ObjectOutputStream oos = new ObjectOutputStream(
// new BufferedOutputStream(response.getOutputStream()));
final ObjectOutputStream oos = new ObjectOutputStream(
new BufferedOutputStream(out));
/* END -- S1WS_MOD */
oos.writeObject(message);
oos.flush();
//oos.close();
}
private void configureResponse(HttpServletResponse response, Message message) {
response.setContentType(BINARY_DATA_TYPE);
/* BEGIN -- S1WS_MOD */
int reslen = getContentLength(message);
if (JMXInbandStream.getOutgoingStream() != null) {
int len = (int) JMXInbandStream.getOutgoingStreamLength();
int chunks = (int) ((len/8192) + 2);
reslen += len + (chunks * 4);
}
response.setContentLength(reslen /*getContentLength(message)*/);
/* END -- S1WS_MOD */
response.setHeader("Connection", "Keep-Alive");
response.setStatus(HttpServletResponse.SC_OK);
}
/** Returns the size of given seialized object in bytes.
The size is calculated from the underlying ByteArrayOutputStream
backing an ObjectStream, onto which the Object is written.
*/
private int getContentLength(Serializable serObject) {
int size = 0;
ObjectOutputStream oos = null;
try {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(serObject);
size = baos.size();
}
catch (Exception e) {
e.printStackTrace();
}
finally {
/* BEGIN -- S1WS_MOD */
/*
try {
if (oos != null) {
oos.close();
}
}
catch (Exception e){}
*/
/* END -- S1WS_MOD */
}
return size;
}
}
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