org.jdal.remoting.websocket.WebSocketServiceExporter.java Source code

Introduction

Here is the source code for org.jdal.remoting.websocket.WebSocketServiceExporter.java

Source

/*
 * Copyright 2009-2012 Jose Luis Martin.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jdal.remoting.websocket;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

import org.springframework.remoting.rmi.RemoteInvocationSerializingExporter;
import org.springframework.remoting.support.RemoteInvocation;
import org.springframework.remoting.support.RemoteInvocationResult;

/**
 * Remote Service Exporter using WebSockets
 * 
 * @author Jose Luis Martin - (jlm@joseluismartin.info)
 * @since 2.0
 */
public class WebSocketServiceExporter extends RemoteInvocationSerializingExporter {

    /**
     * Handle binary data
     * @param is 
     * @param os 
     * @throws IOException
     * @throws ClassNotFoundException
     */
    public void handle(InputStream is, OutputStream os) throws IOException, ClassNotFoundException {
        RemoteInvocation invocation = readRemoteInvocation(is);
        writeRemoteInvocationResult(invokeAndCreateResult(invocation, getProxy()), os);
    }

    protected RemoteInvocation readRemoteInvocation(InputStream is) throws IOException, ClassNotFoundException {

        ObjectInputStream ois = createObjectInputStream(decorateInputStream(is));

        return doReadRemoteInvocation(ois);
    }

    protected InputStream decorateInputStream(InputStream is) throws IOException {
        return is;
    }

    protected OutputStream decorateOutputStream(OutputStream os) throws IOException {
        return os;
    }

    protected void writeRemoteInvocationResult(RemoteInvocationResult result, OutputStream os) throws IOException {

        ObjectOutputStream oos = createObjectOutputStream(decorateOutputStream(os));
        doWriteRemoteInvocationResult(result, oos);
    }

}