/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Sam
*/
package com.caucho.resources.rmi;
import com.caucho.config.ConfigException;
import com.caucho.util.L10N;
import javax.resource.spi.ResourceAdapterInternalException;
import java.rmi.Naming;
import java.rmi.Remote;
import java.rmi.server.UnicastRemoteObject;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
*/
public class RmiService {
static private final Logger log
= Logger.getLogger(RmiService.class.getName());
static final L10N L = new L10N(RmiService.class);
private RmiRegistry _registry;
private String _serviceName;
private String _serviceClass;
private Class _serviceClassClass;
private String _boundName;
private Remote _boundObject;
/**
* The name of the service in the Registry, usually by convention this is the
* same as the class name of the interface for the service. RMI has a global
* namespace, so this name must be unique within the JVM of the Registry,
* even if the service happens to belong only to a particular web-app.
*/
public void setServiceName(String name)
{
_serviceName = name;
}
public String getServiceName()
{
return _serviceName;
}
/**
* The name of the class that implements the service.
*/
public void setServiceClass(String serviceClass)
{
_serviceClass = serviceClass;
}
/**
* The name of the class that implements the service.
*/
public String getServiceClass()
{
return _serviceClass;
}
public void setParent(Object parent)
{
if (parent instanceof RmiRegistry)
_registry = (RmiRegistry) parent;
}
public void init()
throws ConfigException
{
if (_registry == null)
throw new ConfigException(L.l("{0} must be used as a child of {1}","RmiService","RmiRegistry"));
if (_serviceClass == null)
throw new ConfigException(L.l("`{0}' is required","service-class"));
if (_serviceName == null)
throw new ConfigException(L.l("`{0}' is required","service-name"));
try {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
if (loader != null)
_serviceClassClass = Class.forName(_serviceClass, false, loader);
else
_serviceClassClass = Class.forName(_serviceClass);
} catch (ClassNotFoundException ex) {
throw new ConfigException(L.l("no class found with name `{0}'",_serviceClass));
}
}
/**
* Bind the RMI service.
*/
public void start()
throws ResourceAdapterInternalException
{
String fullName = _registry.makeFullName(_serviceName);
if (_boundName != null)
throw new ResourceAdapterInternalException(L.l("cannot bind rmi service with name `{0}', already bound with name `{1}'", fullName, _boundName));
try {
_boundObject = (Remote) _serviceClassClass.newInstance();
if (log.isLoggable(Level.FINE))
log.fine(L.l("binding rmi name `{0}' to object `{1}'",fullName,_boundObject.getClass().getName()));
Naming.rebind(fullName, _boundObject);
_boundName = fullName;
}
catch (Exception ex) {
throw new ResourceAdapterInternalException(L.l("error binding rmi service with name `{0}'", fullName),ex);
}
}
/**
* unbind and unexport
*/
void stop()
{
if (_boundName != null) {
try {
if (log.isLoggable(Level.FINE))
log.fine(L.l("unbinding rmi name `{0}'", _boundName));
Naming.unbind(_boundName);
} catch (Exception ex) {
if (log.isLoggable(Level.INFO))
log.log(Level.INFO,L.l("error unbinding rmi name `{0}'", _boundName),ex);
}
_boundName = null;
}
if (_boundObject != null) {
try {
if (log.isLoggable(Level.FINEST))
log.finest(L.l("unexporting rmi object `{0}'", _boundObject.getClass().getName()));
UnicastRemoteObject.unexportObject(_boundObject, true);
} catch (Exception ex) {
if (log.isLoggable(Level.FINE))
log.log(Level.FINE,L.l("error unexporting rmi object `{0}'", _boundObject.getClass().getName()),ex);
}
_boundObject = null;
}
}
}