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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.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import org.apache.tuscany.sca.databinding.json.jackson.JacksonHelper;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.node.JsonNodeFactory;
import org.codehaus.jackson.node.ObjectNode;
/**
* When the method invocation completes, the service must reply with a response. The response is a single object serialized using JSON.
* <br>
* It has three properties:
*
* <ul>
* <li>result - The Object that was returned by the invoked method. This must be null in case there was an error invoking the method.
* <li>error - An Error object if there was an error invoking the method. It must be null if there was no error.
* <li>id - This must be the same id as the request it is responding to.
* </ul>
*/
public abstract class JsonRpcResponse {
public static final int REMOTE_EXCEPTION = 490;
protected ObjectNode jsonNode;
public JsonRpcResponse(ObjectNode response) {
super();
this.jsonNode = response;
}
public JsonRpcResponse(JsonNode id, Throwable t) {
super();
ObjectNode response = JsonNodeFactory.instance.objectNode();
response.put("id", id);
// response.put("result", JsonNodeFactory.instance.nullNode());
response.put("error", mapError(t));
this.jsonNode = response;
}
public JsonRpcResponse(JsonNode id, JsonNode result) {
super();
ObjectNode response = JsonNodeFactory.instance.objectNode();
response.put("id", id);
response.put("result", result);
// response.put("error", JsonNodeFactory.instance.nullNode());
this.jsonNode = response;
}
private ObjectNode mapError(Throwable t) {
ObjectNode obj = JsonNodeFactory.instance.objectNode();
// obj.put("msg", t.getMessage());
obj.put("code", REMOTE_EXCEPTION);
obj.put("message", t.getMessage());
ObjectNode exception = JsonNodeFactory.instance.objectNode();
exception.put("class", t.getClass().getName());
exception.put("message", t.getMessage());
exception.put("stackTrace", JsonRpc20Error.stackTrace(t));
obj.put("data", exception);
return obj;
}
public void write(Writer writer) throws IOException {
JacksonHelper.MAPPER.writeValue(writer, jsonNode);
}
public static String stackTrace(Throwable t) {
StringWriter sw = new StringWriter();
t.printStackTrace(new PrintWriter(sw));
return sw.toString();
}
public ObjectNode getJsonNode() {
return jsonNode;
}
}
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