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/*
* 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.samples.http;
import java.util.Map;
import javax.management.MBeanServer;
import org.jboss.remoting.InvocationRequest;
import org.jboss.remoting.ServerInvocationHandler;
import org.jboss.remoting.ServerInvoker;
import org.jboss.remoting.transport.http.HTTPMetadataConstants;
import org.jboss.remoting.callback.InvokerCallbackHandler;
/**
* Remoting handler implementation for http invocations to
* show how to return different data to client.
*
* @author <a href="mailto:tom.elrod@jboss.com">Tom Elrod</a>
*/
public class WebInvocationHandler implements ServerInvocationHandler
{
// Pre-defined returns to be sent back to client based on type of request.
public static final String RESPONSE_VALUE = "This is the return to simple text based http invocation.";
public static final ComplexObject OBJECT_RESPONSE_VALUE = new ComplexObject(5, "dub", false);
public static final String HTML_PAGE_RESPONSE = "<html><head><title>Test HTML page</title></head><body>" +
"<h1>HTTP/Servlet Test HTML page</h1><p>This is a simple page served for test." +
"<p>Should show up in browser or via invoker client</body></html>";
// Different request types that client may make
public static final String NULL_RETURN_PARAM = "return_null";
public static final String OBJECT_RETURN_PARAM = "return_object";
public static final String STRING_RETURN_PARAM = "return_string";
/**
* called to handle a specific invocation
*
* @param invocation
* @return
* @throws Throwable
*/
public Object invoke(InvocationRequest invocation) throws Throwable
{
// Print out the invocation request
System.out.println("Invocation request from client is: " + invocation.getParameter());
if(NULL_RETURN_PARAM.equals(invocation.getParameter()))
{
return null;
}
else if(invocation.getParameter() instanceof ComplexObject)
{
return OBJECT_RESPONSE_VALUE;
}
else if(STRING_RETURN_PARAM.equals(invocation.getParameter()))
{
Map responseMetadata = invocation.getReturnPayload();
responseMetadata.put(HTTPMetadataConstants.RESPONSE_CODE, new Integer(207));
responseMetadata.put(HTTPMetadataConstants.RESPONSE_CODE_MESSAGE, "Custom response code and message from remoting server");
// Just going to return static string as this is just simple example code.
return RESPONSE_VALUE;
}
else
{
return HTML_PAGE_RESPONSE;
}
}
/**
* Adds a callback handler that will listen for callbacks from
* the server invoker handler.
*
* @param callbackHandler
*/
public void addListener(InvokerCallbackHandler callbackHandler)
{
// NO OP as do not handling callback listeners in this example
}
/**
* Removes the callback handler that was listening for callbacks
* from the server invoker handler.
*
* @param callbackHandler
*/
public void removeListener(InvokerCallbackHandler callbackHandler)
{
// NO OP as do not handling callback listeners in this example
}
/**
* set the mbean server that the handler can reference
*
* @param server
*/
public void setMBeanServer(MBeanServer server)
{
// NO OP as do not need reference to MBeanServer for this handler
}
/**
* set the invoker that owns this handler
*
* @param invoker
*/
public void setInvoker(ServerInvoker invoker)
{
// NO OP as do not need reference back to the server invoker
}
}
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