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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.jsonrpc.protocol;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import org.apache.tuscany.sca.databinding.json.jackson.JacksonHelper;
import org.json.JSONObject;
/**
* http://json-rpc.org/wiki/specification
* A remote method is invoked by sending a request to a remote service. The request is a single object serialized using JSON.
* <br>It has three properties:
* <ul>
* <li>method - A String containing the name of the method to be invoked.
* <li>params - An Array of objects to pass as arguments to the method.
* <li>id - The request id. This can be of any type. It is used to match the response with the request that it is replying to.
* </ul>
*/
public abstract class JsonRpcRequest {
protected String method;
protected Object id;
protected Object[] params;
protected JSONObject jsonObject;
public JsonRpcRequest(Object id, String method, Object[] params) {
super();
this.id = id;
this.method = method;
this.params = params;
}
protected JsonRpcRequest(JSONObject jsonObject) {
super();
this.jsonObject = jsonObject;
}
public JSONObject toJSONObject() throws Exception {
if (jsonObject != null) {
return jsonObject;
} else {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
write(bos);
ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
jsonObject = JacksonHelper.MAPPER.readValue(bis, JSONObject.class);
}
return jsonObject;
}
public abstract void write(OutputStream os) throws Exception;
public boolean isNotification() {
return id == null || id == JSONObject.NULL;
}
public String getMethod() {
return method;
}
public Object getId() {
return id;
}
public Object[] getParams() {
return params;
}
}
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