Package org.apache.tuscany.sca.binding.jsonrpc.provider

Source Code of org.apache.tuscany.sca.binding.jsonrpc.provider.JSONRPCClientInvoker

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you 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.apache.tuscany.sca.binding.jsonrpc.provider;

import java.lang.reflect.Method;

import org.apache.http.client.HttpClient;
import org.apache.tuscany.sca.assembly.EndpointReference;
import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.java.JavaOperation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.jabsorb.client.Client;
import org.jabsorb.client.Session;
import org.jabsorb.client.TransportRegistry;

/**
* Invoker for the JSONRPC Binding
*
* @version $Rev: 923761 $ $Date: 2010-03-16 14:36:05 +0000 (Tue, 16 Mar 2010) $
*/
public class JSONRPCClientInvoker implements Invoker {
    private EndpointReference endpointReference;
    private Operation operation;
    private Method method;
    private String uri;

    public JSONRPCClientInvoker(EndpointReference endpointReference, Operation operation, HttpClient httpClient) {
        this.endpointReference = endpointReference;
        this.operation = operation;
        this.method = ((JavaOperation)operation).getJavaMethod();
        this.uri = ((JSONRPCBinding)endpointReference.getBinding()).getURI();
    }

    public Message invoke(Message msg) {
        Session session = TransportRegistry.i().createSession(uri);
        Client client = new Client(session);
        Object proxy = client.openProxy("", method.getDeclaringClass());

        try {
            Object result = client.invoke(proxy, method, (Object[])msg.getBody());
            msg.setBody(result);
        } catch (Exception e) {
            msg.setFaultBody(e);
        } finally {
            client.closeProxy(proxy);
            session.close();
        }
        return msg;
    }
   
}
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