1 /* 2 * Copyright (C) 2016 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.google.android.mobly.snippet.rpc; 18 19 import java.io.PrintWriter; 20 import java.io.StringWriter; 21 import org.json.JSONException; 22 import org.json.JSONObject; 23 24 /** 25 * Represents a JSON RPC result. 26 * 27 * @see <a href="http://json-rpc.org/wiki/specification">http://json-rpc.org/wiki/specification</a> 28 */ 29 public class JsonRpcResult { 30 JsonRpcResult()31 private JsonRpcResult() { 32 // Utility class. 33 } 34 empty(int id)35 public static JSONObject empty(int id) throws JSONException { 36 JSONObject json = new JSONObject(); 37 json.put("id", id); 38 json.put("result", JSONObject.NULL); 39 json.put("callback", JSONObject.NULL); 40 json.put("error", JSONObject.NULL); 41 return json; 42 } 43 result(int id, Object data)44 public static JSONObject result(int id, Object data) throws JSONException { 45 JSONObject json = new JSONObject(); 46 json.put("id", id); 47 json.put("result", JsonBuilder.build(data)); 48 json.put("callback", JSONObject.NULL); 49 json.put("error", JSONObject.NULL); 50 return json; 51 } 52 callback(int id, Object data, String callbackId)53 public static JSONObject callback(int id, Object data, String callbackId) throws JSONException { 54 JSONObject json = new JSONObject(); 55 json.put("id", id); 56 json.put("result", JsonBuilder.build(data)); 57 json.put("callback", callbackId); 58 json.put("error", JSONObject.NULL); 59 return json; 60 } 61 error(int id, Throwable t)62 public static JSONObject error(int id, Throwable t) throws JSONException { 63 String stackTrace = getStackTrace(t); 64 JSONObject json = new JSONObject(); 65 json.put("id", id); 66 json.put("result", JSONObject.NULL); 67 json.put("callback", JSONObject.NULL); 68 json.put("error", stackTrace); 69 return json; 70 } 71 getStackTrace(Throwable throwable)72 public static String getStackTrace(Throwable throwable) { 73 StringWriter stackTraceWriter = new StringWriter(); 74 stackTraceWriter.write("\n-------------- Java Stacktrace ---------------\n"); 75 throwable.printStackTrace(new PrintWriter(stackTraceWriter)); 76 stackTraceWriter.write("----------------------------------------------"); 77 return stackTraceWriter.toString(); 78 } 79 } 80