/*
* Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
*
* The Apache Software License, Version 1.1
*
* 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 acknowlegement:
* "This product includes software developed by the
* Caucho Technology (http://www.caucho.com/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "Hessian", "Resin", and "Caucho" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* info@caucho.com.
*
* 5. Products derived from this software may not be called "Resin"
* nor may "Resin" appear in their names without prior written
* permission of Caucho Technology.
*
* 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 CAUCHO TECHNOLOGY 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.
*
* @author Scott Ferguson
*/
package com.caucho.hessian.server;
import com.caucho.hessian.io.AbstractHessianInput;
import com.caucho.hessian.io.AbstractHessianOutput;
import com.caucho.services.server.AbstractSkeleton;
import com.caucho.services.server.ServiceContext;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Proxy class for Hessian services.
*/
public class HessianSkeleton extends AbstractSkeleton {
private static final Logger
log = Logger.getLogger(HessianSkeleton.class.getName());
private Object _service;
/**
* Create a new hessian skeleton.
*
* @param service the underlying service object.
* @param apiClass the API interface
*/
public HessianSkeleton(Object service, Class apiClass)
{
super(apiClass);
if (service == null)
service = this;
_service = service;
if (! apiClass.isAssignableFrom(service.getClass()))
throw new IllegalArgumentException("Service " + service + " must be an instance of " + apiClass.getName());
}
/**
* Invoke the object with the request from the input stream.
*
* @param in the Hessian input stream
* @param out the Hessian output stream
*/
public void invoke(AbstractHessianInput in, AbstractHessianOutput out)
throws Throwable
{
ServiceContext context = ServiceContext.getContext();
// backward compatibility for some frameworks that don't read
// the call type first
in.skipOptionalCall();
String header;
while ((header = in.readHeader()) != null) {
Object value = in.readObject();
context.addHeader(header, value);
}
String methodName = in.readMethod();
Method method = getMethod(methodName);
if (method != null) {
}
else if ("_hessian_getAttribute".equals(methodName)) {
String attrName = in.readString();
in.completeCall();
String value = null;
if ("java.api.class".equals(attrName))
value = getAPIClassName();
else if ("java.home.class".equals(attrName))
value = getHomeClassName();
else if ("java.object.class".equals(attrName))
value = getObjectClassName();
out.startReply();
out.writeObject(value);
out.completeReply();
return;
}
else if (method == null) {
out.startReply();
out.writeFault("NoSuchMethodException",
"The service has no method named: " + in.getMethod(),
null);
out.completeReply();
return;
}
Class []args = method.getParameterTypes();
Object []values = new Object[args.length];
for (int i = 0; i < args.length; i++) {
values[i] = in.readObject(args[i]);
}
Object result = null;
try {
result = method.invoke(_service, values);
} catch (Throwable e) {
if (e instanceof InvocationTargetException)
e = ((InvocationTargetException) e).getTargetException();
log.log(Level.WARNING, e.toString(), e);
out.startReply();
out.writeFault("ServiceException", e.getMessage(), e);
out.completeReply();
return;
}
// The complete call needs to be after the invoke to handle a
// trailing InputStream
in.completeCall();
out.startReply();
out.writeObject(result);
out.completeReply();
out.close();
}
}