| /* |
| * 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.ambari.logsearch.config.json; |
| |
| import com.google.gson.JsonArray; |
| import com.google.gson.JsonElement; |
| import com.google.gson.JsonObject; |
| import com.google.gson.JsonParser; |
| |
| import java.util.Map; |
| |
| /** |
| * Utility class to help JSON operations. |
| */ |
| public class JsonHelper { |
| |
| private JsonHelper() { |
| } |
| |
| public static JsonElement mergeGlobalConfigWithInputConfig(JsonParser parser, String inputConfig, JsonArray globalConfigNode) { |
| JsonElement inputConfigJson = parser.parse(inputConfig); |
| for (Map.Entry<String, JsonElement> typeEntry : inputConfigJson.getAsJsonObject().entrySet()) { |
| for (JsonElement e : typeEntry.getValue().getAsJsonArray()) { |
| for (JsonElement globalConfig : globalConfigNode) { |
| merge(globalConfig.getAsJsonObject(), e.getAsJsonObject()); |
| } |
| } |
| } |
| return inputConfigJson; |
| } |
| |
| public static void merge(JsonObject source, JsonObject target) { |
| for (Map.Entry<String, JsonElement> e : source.entrySet()) { |
| if (!target.has(e.getKey())) { |
| target.add(e.getKey(), e.getValue()); |
| } else { |
| if (e.getValue().isJsonObject()) { |
| JsonObject valueJson = (JsonObject)e.getValue(); |
| merge(valueJson, target.get(e.getKey()).getAsJsonObject()); |
| } |
| } |
| } |
| } |
| } |