/*
* 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 :
* <http://www.jxta.org/project/www/license.html> 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 net.jxta.endpoint.EndpointAddress;
import net.jxta.endpoint.EndpointService;
import net.jxta.endpoint.MessageSender;
import net.jxta.endpoint.Messenger;
import net.jxta.exception.PeerGroupException;
import net.jxta.logging.Logging;
import java.net.ConnectException;
import java.net.SocketTimeoutException;
import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Simple Client MessageSender
*/
class HttpMessageSender implements MessageSender {
/**
* Logger
*/
private final static transient Logger LOG = Logger.getLogger(HttpMessageSender.class.getName());
/**
* The ServletHttpTransport that created this object
*/
private final ServletHttpTransport servletHttpTransport;
/**
* The public address for this message sender
*/
private final EndpointAddress publicAddress;
/**
* The Set of active messengers. We keep track so that we can aggressively
* close the Messengers when the transport is shut down.
*/
private final Map<HttpClientMessenger, Object> messengers = new WeakHashMap<HttpClientMessenger, Object>();
/**
* constructor
*/
public HttpMessageSender(ServletHttpTransport servletHttpTransport, EndpointAddress publicAddress) throws PeerGroupException {
this.servletHttpTransport = servletHttpTransport;
this.publicAddress = publicAddress;
if (Logging.SHOW_CONFIG && LOG.isLoggable(Level.CONFIG)) {
StringBuilder configInfo = new StringBuilder( "Configuring HTTP Client Message Transport : " + servletHttpTransport.assignedID);
configInfo.append("\n\tPublic Address = ").append(publicAddress);
LOG.config(configInfo.toString());
}
}
/**
* {@inheritDoc}
*/
public EndpointAddress getPublicAddress() {
return publicAddress;
}
/**
* {@inheritDoc}
*/
public boolean isConnectionOriented() {
return true;
}
/**
* {@inheritDoc}
*/
public boolean allowsRouting() {
return true;
}
/**
* {@inheritDoc}
*/
public Object transportControl(Object operation, Object Value) {
return null;
}
/**
* shut down all client connections.
*/
public synchronized void start() throws PeerGroupException {
if (servletHttpTransport.getEndpointService().addMessageTransport(this) == null) {
throw new PeerGroupException("Transport registration refused");
}
if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
LOG.info("HTTP Client Transport started.");
}
}
/**
* shut down all client connections.
*/
public synchronized void stop() {
synchronized (messengers) {
Iterator<HttpClientMessenger> eachMessenger = messengers.keySet().iterator();
while (eachMessenger.hasNext()) {
HttpClientMessenger aMessenger = eachMessenger.next();
aMessenger.closeImpl();
eachMessenger.remove();
}
}
if (Logging.SHOW_INFO && LOG.isLoggable(Level.INFO)) {
LOG.info("HTTP Client Transport stopped.");
}
}
/**
* {@inheritDoc}
*/
public Messenger getMessenger(EndpointAddress destAddr, Object hintIgnored) {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("getMessenger for : " + destAddr);
}
if (!getProtocolName().equals(destAddr.getProtocolName())) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Cannot make messenger for protocol :" + destAddr.getProtocolName());
}
return null;
}
try {
// Right now we do not want to "announce" outgoing messengers
// because they get pooled and so must not be grabbed by a listener.
// If "announcing" is to be done, that should be by the endpoint
// and probably with a subtly different interface.
HttpClientMessenger result = new HttpClientMessenger(servletHttpTransport, publicAddress, destAddr);
synchronized (messengers) {
messengers.put(result, null);
}
return result;
} catch (SocketTimeoutException noConnect) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Could not connect to " + destAddr + " : " + noConnect.getMessage());
}
} catch (ConnectException noConnect) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.warning("Failed to connect to " + destAddr + " : " + noConnect.getMessage());
}
} catch (Throwable e) {
if (Logging.SHOW_WARNING && LOG.isLoggable(Level.WARNING)) {
LOG.log(Level.WARNING, "Could not make messenger for " + destAddr, e);
}
}
// If we got here, we failed.
return null;
}
/**
* {@inheritDoc}
*/
public String getProtocolName() {
return servletHttpTransport.HTTP_PROTOCOL_NAME;
}
/**
* {@inheritDoc}
*/
public EndpointService getEndpointService() {
return servletHttpTransport.getEndpointService();
}
}