| /** |
| * 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.hadoop.yarn.applications.distributedshell; |
| |
| import java.io.FileInputStream; |
| import java.io.InputStream; |
| import java.util.Map.Entry; |
| import java.util.Properties; |
| |
| import org.apache.log4j.LogManager; |
| import org.apache.log4j.PropertyConfigurator; |
| |
| public class Log4jPropertyHelper { |
| |
| public static void updateLog4jConfiguration(Class<?> targetClass, |
| String log4jPath) throws Exception { |
| Properties customProperties = new Properties(); |
| try ( |
| FileInputStream fs = new FileInputStream(log4jPath); |
| InputStream is = targetClass.getResourceAsStream("/log4j.properties")) { |
| customProperties.load(fs); |
| Properties originalProperties = new Properties(); |
| originalProperties.load(is); |
| for (Entry<Object, Object> entry : customProperties.entrySet()) { |
| originalProperties.setProperty(entry.getKey().toString(), entry |
| .getValue().toString()); |
| } |
| LogManager.resetConfiguration(); |
| PropertyConfigurator.configure(originalProperties); |
| } |
| } |
| } |