/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.remoting.transport.rmi;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.lang.reflect.Constructor;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.ExportException;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import java.rmi.server.UnicastRemoteObject;
import java.util.Map;
import javax.net.SocketFactory;
import org.jboss.remoting.InvokerLocator;
import org.jboss.remoting.ServerInvoker;
import org.jboss.remoting.marshal.MarshalFactory;
import org.jboss.remoting.marshal.Marshaller;
import org.jboss.remoting.marshal.UnMarshaller;
import org.jboss.remoting.marshal.UnMarshallerDecorator;
import org.jboss.remoting.marshal.serializable.SerializableMarshaller;
/**
* RMIServerInvoker
*
* @author <a href="mailto:jhaynie@vocalocity.net">Jeff Haynie</a>
* @author <a href="mailto:tom.elrod@jboss.com">Tom Elrod</a>
* @version $Revision: 1.13 $
*/
public class RMIServerInvoker extends ServerInvoker implements RMIServerInvokerInf
{
private Remote stub;
public static final String SOCKET_FACTORY = "socketFactory";
public static final int BACKLOG_DEFAULT = 200;
public static final int DEFAULT_REGISTRY_PORT = 3455;
public static final String REGISTRY_PORT_KEY = "registryPort";
private Marshaller marshaller = null;
private UnMarshaller unmarshaller = null;
private SocketFactory socketFactory = null;
public RMIServerInvoker(InvokerLocator locator)
{
super(locator);
}
protected void setup() throws Exception
{
super.setup();
int bindPort = getServerBindPort();
Registry registry = null;
registry = getRegistry();
// stub = UnicastRemoteObject.exportObject(this, bindPort)
String bindHost = getServerBindAddress();
String clientConnectHost = getClientConnectAddress();
if(clientConnectHost == null)
{
clientConnectHost = bindHost;
}
RMIServerSocketFactory ssf = new RemotingRMIServerSocketFactory(getServerSocketFactory(), BACKLOG_DEFAULT, bindHost, getTimeout());
RMIClientSocketFactory csf = new RemotingRMIClientSocketFactory(getSocketFactory(), clientConnectHost, getTimeout());
stub = UnicastRemoteObject.exportObject(this, bindPort, csf, ssf);
log.debug("Binding registry to " + "remoting/RMIServerInvoker/" + bindPort);
registry.rebind("remoting/RMIServerInvoker/" + bindPort, this);
unmarshaller = MarshalFactory.getUnMarshaller(getLocator(), this.getClass().getClassLoader());
marshaller = MarshalFactory.getMarshaller(getLocator(), this.getClass().getClassLoader());
}
public SocketFactory getSocketFactory() throws IOException
{
if(socketFactory == null)
{
socketFactory = createSocketFactory();
}
return socketFactory;
}
public void setSocketFactory(SocketFactory factory)
{
this.socketFactory = factory;
}
protected SocketFactory createSocketFactory() throws IOException
{
// only want to look at config if server socket factory has not already been set
if(socketFactory == null)
{
String socketFactoryString = (String) configuration.get(SOCKET_FACTORY);
ClassLoader classLoader = null;
if(classLoader == null)
{
classLoader = Thread.currentThread().getContextClassLoader();
if(classLoader == null)
{
classLoader = getClass().getClassLoader();
}
}
try
{
Class cl = classLoader.loadClass(socketFactoryString);
Constructor socketConstructor = null;
socketConstructor = cl.getConstructor(new Class[]{});
socketFactory = (SocketFactory) socketConstructor.newInstance(new Object[]{});
}
catch(Exception e)
{
log.debug("Could not create socket factory by classname (" + socketFactoryString + "). Error message: " + e.getMessage());
}
}
if(socketFactory == null)
{
log.debug("Did not find socket factory configuration as mbean service or classname. Creating default server socket.");
socketFactory = getDefaultSocketFactory();
}
log.debug("Created server socket factory: " + socketFactory);
return socketFactory;
}
protected SocketFactory getDefaultSocketFactory()
{
// return SocketFactory.getDefault();
/**
* Returning null because by default, this socket factory
* will be need to be serialized when exported. Since the
* default factory implementation returned from SocketFactory.getDefault()
* is not serializable, it will not work. Therefore, if return null,
* will delay the creation of the socket factory until the RMIClientSocketFactory is
* exported.
*/
return null;
}
public RMIServerInvoker(InvokerLocator locator, Map configuration)
{
super(locator, configuration);
}
private Registry getRegistry() throws Exception
{
Registry registry = null;
int port = DEFAULT_REGISTRY_PORT;
// See if locator contains a specific registry port
Map params = getConfiguration();
if(params != null)
{
String value = (String) params.get(REGISTRY_PORT_KEY);
if(value != null)
{
try
{
port = Integer.parseInt(value);
log.debug("Using port " + port + " for rmi registry.");
}
catch(NumberFormatException e)
{
throw new Exception("Can not set the RMIServerInvoker RMI registry to port " + value + ". This is not a valid port number.");
}
}
}
try
{
log.debug("Creating registry for " + port);
registry = LocateRegistry.createRegistry(port);
}
catch(ExportException exportEx)
{
log.debug("Locating registry for " + port);
// Probably means that the registry already exists, so just get it.
registry = LocateRegistry.getRegistry(port);
}
if(log.isTraceEnabled())
{
log.trace("Got registry: " + registry);
}
return registry;
}
protected String getDefaultDataType()
{
return SerializableMarshaller.DATATYPE;
}
/**
* destroy the RMI Server Invoker, which will unexport the RMI server
*/
public void destroy()
{
super.destroy();
try
{
try
{
log.debug("unbinding " + "remoting/RMIServerInvoker/" + locator.getPort() + " from registry running on port " + (locator.getPort() + 1));
Registry registry = getRegistry();
registry.unbind("remoting/RMIServerInvoker/" + locator.getPort());
}
catch(Exception e)
{
log.error("Error unbinding RMIServerInvoker from RMI registry.", e);
}
UnicastRemoteObject.unexportObject(this, true);
}
catch(java.rmi.NoSuchObjectException e)
{
}
}
protected void finalize() throws Throwable
{
destroy();
super.finalize();
}
/**
* returns true if the transport is bi-directional in nature, for example,
* SOAP in unidirectional and SOCKETs are bi-directional (unless behind a firewall
* for example).
*
* @return
*/
public boolean isTransportBiDirectional()
{
return true;
}
public final Remote getStub()
{
return stub;
}
public Object transport(Object invocation)
throws RemoteException, IOException
{
Object payload = invocation;
if(unmarshaller != null)
{
if(unmarshaller instanceof UnMarshallerDecorator)
{
payload = ((UnMarshallerDecorator) unmarshaller).removeDecoration(payload);
}
else
{
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(byteOut);
oos.writeObject(payload);
oos.flush();
ByteArrayInputStream is = new ByteArrayInputStream(byteOut.toByteArray());
try
{
oos.close();
payload = unmarshaller.read(is, null);
is.close();
}
catch(ClassNotFoundException e)
{
log.error("Could not unmarshall invocation request" + payload, e);
throw new IOException(e.getMessage());
}
}
}
Object response = invoke(payload);
/* Jira Issue: JBREM-167
if(marshaller != null)
{
PipedOutputStream pos = new PipedOutputStream();
PipedInputStream pis = new PipedInputStream();
pos.connect(pis);
ObjectOutputStream oos = new ObjectOutputStream(pos);
marshaller.write(response, oos);
pos.flush();
pos.write(new byte[0]);
pos.flush();
ObjectInputStream ois = new ObjectInputStream(pis);
try
{
oos.close();
response = ois.readObject();
ois.close();
}
catch(ClassNotFoundException e)
{
log.error("Could not marshall invocation response object " + response, e);
throw new IOException(e.getMessage());
}
}
*/
return response;
}
}