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/*
* 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.http.operationselector.jsonrpc.provider;
import java.io.CharArrayWriter;
import java.util.List;
import org.apache.tuscany.sca.binding.http.HTTPBinding;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Interceptor;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.apache.tuscany.sca.runtime.RuntimeWire;
import org.json.JSONObject;
import com.metaparadigm.jsonrpc.JSONRPCResult;
public class JSONRPCOperationSelectorInterceptor implements Interceptor {
private Invoker next;
private RuntimeWire runtimeWire;
private HTTPBinding binding;
//TODO: Pass messageFactory to create fault messages when error occur
public JSONRPCOperationSelectorInterceptor(HTTPBinding binding, RuntimeWire runtimeWire) {
this.binding = binding;
this.runtimeWire = runtimeWire;
}
public Invoker getNext() {
return this.next;
}
public void setNext(Invoker next) {
this.next = next;
}
public Message invoke(Message msg) {
JSONObject jsonReq = null;
String method = null;
try {
Object[] args = msg.getBody();
CharArrayWriter data = (CharArrayWriter) args[0];
jsonReq = new JSONObject(data.toString());
method = jsonReq.getString("method");
} catch (Exception e) {
//FIXME Exceptions are not handled correctly here
// They should be reported to the client JavaScript as proper
// JavaScript exceptions.
throw new RuntimeException("Unable to parse request", e);
//FIXME should create a fault message and stuff the JSON Result in the body of the message
//JSONRPCResult errorResult = new JSONRPCResult(JSONRPCResult.CODE_ERR_PARSE, null, e);
//return errorResult;
}
Operation jsonOperation = findOperation(method);
msg.setOperation(jsonOperation);
msg.setBody(jsonReq);
return getNext().invoke(msg);
}
/**
* Find the operation from the component service contract
* @param componentService
* @param method
* @return
*/
private Operation findOperation(String method) {
if (method.contains(".")) {
method = method.substring(method.lastIndexOf(".") + 1);
}
List<Operation> operations = runtimeWire.getTarget().getInterfaceContract().getInterface().getOperations();
//serviceContract.getInterface().getOperations();
//componentService.getBindingProvider(binding).getBindingInterfaceContract().getInterface().getOperations();
Operation result = null;
for (Operation o : operations) {
if (o.getName().equalsIgnoreCase(method)) {
result = o;
break;
}
}
return result;
}
}
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