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/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN
* MICROSYSTEMS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.impl.endpoint.servlethttp;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.InetAddress;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.util.logging.Level;
import net.jxta.logging.Logging;
import java.util.logging.Logger;
import org.mortbay.http.HttpContext;
import org.mortbay.http.HttpServer;
import org.mortbay.http.SocketListener;
import org.mortbay.http.handler.ResourceHandler;
import org.mortbay.jetty.servlet.ServletHandler;
import org.mortbay.util.InetAddrPort;
import org.mortbay.util.Log;
import org.mortbay.util.LoggerLogSink;
import net.jxta.endpoint.EndpointAddress;
import net.jxta.endpoint.EndpointService;
import net.jxta.endpoint.MessageReceiver;
import net.jxta.endpoint.MessengerEvent;
import net.jxta.endpoint.MessengerEventListener;
import net.jxta.exception.PeerGroupException;
import net.jxta.impl.util.TimeUtils;
/**
* Simple Message Receiver for server side.
*/
class HttpMessageReceiver implements MessageReceiver {
/**
* logger
*/
private final static transient Logger LOG = Logger.getLogger(HttpMessageReceiver.class.getName());
/**
* the relative URI of where the message receiver servlet will be mounted.
*/
private final static String MSG_RECEIVER_RELATIVE_URI = "/*";
/**
* The ServletHttpTransport that created this MessageReceiver.
*/
final ServletHttpTransport servletHttpTransport;
/**
* The public addresses for the this transport.
*/
private final List publicAddresses;
/**
* The min threads that the HTTP server will use for handling requests.
*/
private static int MIN_LISTENER_THREADS = 10;
/**
* The max threads that the HTTP server will use for handling requests.
*/
private static int MAX_LISTENER_THREADS = 200;
/**
* How long a thread can remain idle until the worker thread is let go.
*/
private static long MAX_THREAD_IDLE_DURATION = 30 * TimeUtils.ASECOND;
/**
* The Jetty HTTP Server instance.
*/
private final HttpServer server;
private final ServletHandler handler;
private final SocketListener listener;
/**
* The listener to invoke when making an incoming messenger.
*/
private MessengerEventListener messengerEventListener;
public HttpMessageReceiver(ServletHttpTransport servletHttpTransport, List publicAddresses, InetAddress useInterface, int port) throws PeerGroupException {
this.servletHttpTransport = servletHttpTransport;
this.publicAddresses = publicAddresses;
// read settings from the properties file
Properties prop = getJxtaProperties(
new File(new File(servletHttpTransport.getEndpointService().getGroup().getStoreHome()), "jxta.properties"));
initFromProperties(prop);
if (Logging.SHOW_CONFIG && LOG.isLoggable(Level.CONFIG)) {
StringBuilder configInfo = new StringBuilder("Configuring HTTP Servlet Message Transport : " + servletHttpTransport.assignedID);
configInfo.append("\n\tMin threads=").append(MIN_LISTENER_THREADS);
configInfo.append("\n\tMax threads=").append(MAX_LISTENER_THREADS);
configInfo.append("\n\tMax thread idle time=").append(MAX_THREAD_IDLE_DURATION).append("ms");
LOG.config(configInfo.toString());
}
// Configure Jetty Logging
if (!(Logging.SHOW_FINER && LOG.isLoggable(Level.FINER))) {
Log.instance().disableLog();
}
org.mortbay.util.Code.setDebug(Logging.SHOW_FINER && LOG.isLoggable(Level.FINER));
org.mortbay.util.Code.setSuppressWarnings(!(Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)));
org.mortbay.util.Code.setSuppressStack(!(Logging.SHOW_FINER && LOG.isLoggable(Level.FINER)));
// Setup the logger to match the rest of JXTA unless explicitly configured.
// "LOG_CLASSES" is a Jetty thing.
if (System.getProperty("LOG_CLASSES") == null) {
LoggerLogSink logSink = new LoggerLogSink();
Logger jettyLogger = Logger.getLogger(org.mortbay.http.HttpServer.class.getName());
logSink.setLogger(jettyLogger);
try {
logSink.start();
Log.instance().add(logSink);
} catch (Exception ex) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Could not configure LoggerLogSink");
}
}
}
// Initialize the Jetty HttpServer
server = new HttpServer();
// Create the listener and attach it to server.
InetAddrPort addrPort = new InetAddrPort(useInterface, port);
listener = new SocketListener(addrPort);
listener.setMinThreads(MIN_LISTENER_THREADS);
listener.setMaxThreads(MAX_LISTENER_THREADS);
listener.setMaxIdleTimeMs((int) MAX_THREAD_IDLE_DURATION);
server.addListener(listener);
// Create a context for the handlers at the root, then add servlet
// handler for the specified servlet class and add it to the context
HttpContext handlerContext = server.getContext("/");
handler = new ServletHandler();
handler.setUsingCookies(false);
handler.initialize(handlerContext);
// Use peer group class loader (useful for HttpMessageServlet)
handlerContext.setClassLoader(servletHttpTransport.getEndpointService().getGroup().getLoader());
handlerContext.addHandler(handler);
// Set up support for downloading midlets.
if (System.getProperty("net.jxta.http.allowdownload") != null) {
HttpContext context = server.addContext("/midlets/*");
context.setResourceBase("./midlets/");
// context.setDirAllowed(false);
// context.setServingResources(true);
// String methods[] = {"GET"};
ResourceHandler resHandler = new ResourceHandler();
// resHandler.setAllowedMethods(methods);
context.addHandler(resHandler);
}
handler.addServlet(MSG_RECEIVER_RELATIVE_URI, HttpMessageServlet.class.getName());
}
synchronized void start() throws PeerGroupException {
try {
server.start();
handler.getServletContext().setAttribute("HttpMessageReceiver", this);
} catch (Exception e) {
if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
LOG.log(Level.SEVERE, "Could not start server", e);
}
PeerGroupException failure = new PeerGroupException("Could not start server");
failure.initCause(e);
throw failure;
}
messengerEventListener = servletHttpTransport.getEndpointService().addMessageTransport(this);
if (messengerEventListener == null) {
throw new PeerGroupException("Transport registration refused");
}
if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
LOG.info("HTTP Servlet Transport started.");
}
}
synchronized void stop() {
servletHttpTransport.getEndpointService().removeMessageTransport(this);
messengerEventListener = null;
try {
server.stop();
} catch (InterruptedException e) {
if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
LOG.log(Level.SEVERE, "Interrupted during stop()", e);
}
}
if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
LOG.info("HTTP Servlet Transport stopped.");
}
}
/**
* {@inheritDoc}
*/
boolean messengerReadyEvent(HttpServletMessenger newMessenger, EndpointAddress connAddr) {
MessengerEventListener temp = messengerEventListener;
return null != temp && temp.messengerReady(new MessengerEvent(this, newMessenger, connAddr));
}
/**
* {@inheritDoc}
*/
public Iterator getPublicAddresses() {
return Collections.unmodifiableList(publicAddresses).iterator();
}
/**
* {@inheritDoc}
*/
public String getProtocolName() {
return servletHttpTransport.HTTP_PROTOCOL_NAME;
}
/**
* {@inheritDoc}
*/
public EndpointService getEndpointService() {
return servletHttpTransport.getEndpointService();
}
/**
* {@inheritDoc}
*/
public Object transportControl(Object operation, Object Value) {
return null;
}
ServletHttpTransport getServletHttpTransport() {
return servletHttpTransport;
}
/**
* Returns a Properties instance for jxta.properties if the file exists;
* otherwise, returns null.
*
* @param fromFile properties file
* @return the properties object or null if properties file was not found
*/
private static Properties getJxtaProperties(File fromFile) {
Properties prop = new Properties();
InputStream in = null;
try {
in = new FileInputStream(fromFile);
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("Read properties from " + fromFile.getPath());
}
} catch (FileNotFoundException e) {
return null;
}
try {
prop.load(in);
} catch (IOException e) {
if (Logging.SHOW_SEVERE && LOG.isLoggable(Level.SEVERE)) {
LOG.log(Level.SEVERE, "Error reading " + fromFile.getPath(), e);
}
} finally {
try {
in.close();
} catch (IOException ignored) {
//ignored
}
in = null;
}
return prop;
}
/**
* Reads the properties from the jxta.properties file
*
* @param prop properties to init from
*/
private void initFromProperties(Properties prop) {
if (prop == null) {
if (Logging.SHOW_CONFIG && LOG.isLoggable(Level.CONFIG)) {
LOG.fine("jxta.properties not found: using default values");
}
} else {
if (Logging.SHOW_CONFIG && LOG.isLoggable(Level.CONFIG)) {
LOG.config("Using jxta.properties to configure HTTP server");
}
String minThreadsStr = prop.getProperty("HttpServer.MinThreads");
String maxThreadsStr = prop.getProperty("HttpServer.MaxThreads");
String maxThreadIdleTimeStr = prop.getProperty("HttpServer.MaxThreadIdleTime");
try {
if (minThreadsStr != null) {
MIN_LISTENER_THREADS = Integer.parseInt(minThreadsStr);
}
} catch (NumberFormatException e) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Invalid HttpServer.MinThreads value; using default");
}
}
try {
if (maxThreadsStr != null) {
MAX_LISTENER_THREADS = Integer.parseInt(maxThreadsStr);
}
} catch (NumberFormatException e) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Invalid HttpServer.MaxThreads value; using default");
}
}
try {
if (maxThreadIdleTimeStr != null) {
MAX_THREAD_IDLE_DURATION = Integer.parseInt(maxThreadIdleTimeStr);
}
} catch (NumberFormatException e) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Invalid HttpServer.MaxThreadIdleTime value; using default");
}
}
}
}
}
