/*
* 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 Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Emil Ong
*/
package com.caucho.soa.encoding;
import com.caucho.hessian.io.AbstractHessianOutput;
import com.caucho.hessian.io.Hessian2Input;
import com.caucho.hessian.io.Hessian2Output;
import com.caucho.hessian.io.HessianOutput;
import com.caucho.hessian.io.SerializerFactory;
import com.caucho.hessian.server.HessianSkeleton;
import com.caucho.server.util.CauchoSystem;
import com.caucho.services.server.GenericService;
import com.caucho.util.L10N;
import javax.annotation.PostConstruct;
import javax.jws.WebService;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Invokes a service based on a Hessian-encoded request.
*/
public class HessianEncoding implements ServiceEncoding {
protected static Logger log
= Logger.getLogger(HessianEncoding.class.getName());
private static final L10N L = new L10N(HessianEncoding.class);
private Object _serviceImpl;
private HessianSkeleton _skeleton;
private SerializerFactory _serializerFactory;
/**
* Sets the service class.
*/
public void setService(Object serviceImpl)
{
_serviceImpl = serviceImpl;
}
/**
* Sets the serializer factory.
*/
public void setSerializerFactory(SerializerFactory factory)
{
_serializerFactory = factory;
}
/**
* Gets the serializer factory.
*/
public SerializerFactory getSerializerFactory()
{
if (_serializerFactory == null)
_serializerFactory = new SerializerFactory();
return _serializerFactory;
}
/**
* Sets the serializer send collection java type.
*/
public void setSendCollectionType(boolean sendType)
{
getSerializerFactory().setSendCollectionType(sendType);
}
@PostConstruct
public void init()
throws Exception
{
if (_serviceImpl == null)
_serviceImpl = this;
Class api = null;
if (_serviceImpl != null) {
api = findWebServiceEndpointInterface(_serviceImpl.getClass());
if (api == null)
api = findRemoteAPI(_serviceImpl.getClass());
if (api == null)
api = _serviceImpl.getClass();
}
_skeleton = new HessianSkeleton(_serviceImpl, api);
}
private Class findWebServiceEndpointInterface(Class implClass)
throws ClassNotFoundException
{
if (implClass.isAnnotationPresent(javax.jws.WebService.class)) {
WebService webServiceAnnotation =
(WebService) implClass.getAnnotation(javax.jws.WebService.class);
String endpoint = webServiceAnnotation.endpointInterface();
if (endpoint != null && ! "".equals(endpoint))
return CauchoSystem.loadClass(endpoint);
}
return null;
}
private Class findRemoteAPI(Class implClass)
{
if (implClass == null || implClass.equals(GenericService.class))
return null;
Class []interfaces = implClass.getInterfaces();
if (interfaces.length == 1)
return interfaces[0];
return findRemoteAPI(implClass.getSuperclass());
}
public void invoke(InputStream is, OutputStream os)
{
try {
Hessian2Input in = new Hessian2Input(is);
AbstractHessianOutput out;
SerializerFactory serializerFactory = getSerializerFactory();
in.setSerializerFactory(serializerFactory);
int code = in.read();
if (code != 'c') {
// XXX: deflate
throw new IOException(L.l("expected 'c' in hessian input at {0}",
code));
}
int major = in.read();
int minor = in.read();
if (major >= 2)
out = new Hessian2Output(os);
else
out = new HessianOutput(os);
out.setSerializerFactory(serializerFactory);
if (_skeleton == null)
throw new Exception("skeleton is null!");
_skeleton.invoke(in, out);
out.close();
} catch (IOException e) {
log.log(Level.INFO, L.l("Unable to process request: "), e);
} catch (Throwable e) {
log.log(Level.INFO, L.l("Unable to process request: "), e);
}
}
}