001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.yarn; 020 021import org.apache.hadoop.classification.InterfaceAudience.Public; 022import org.apache.hadoop.classification.InterfaceStability.Unstable; 023import org.apache.log4j.RollingFileAppender; 024 025import java.io.File; 026import java.io.Flushable; 027 028/** 029 * A simple log4j-appender for container's logs. 030 * 031 */ 032@Public 033@Unstable 034public class ContainerRollingLogAppender extends RollingFileAppender 035 implements Flushable { 036 private String containerLogDir; 037 private String containerLogFile; 038 039 @Override 040 public void activateOptions() { 041 synchronized (this) { 042 setFile(new File(this.containerLogDir, containerLogFile).toString()); 043 setAppend(true); 044 super.activateOptions(); 045 } 046 } 047 048 @Override 049 public void flush() { 050 if (qw != null) { 051 qw.flush(); 052 } 053 } 054 055 /** 056 * Getter/Setter methods for log4j. 057 */ 058 059 public String getContainerLogDir() { 060 return this.containerLogDir; 061 } 062 063 public void setContainerLogDir(String containerLogDir) { 064 this.containerLogDir = containerLogDir; 065 } 066 067 public String getContainerLogFile() { 068 return containerLogFile; 069 } 070 071 public void setContainerLogFile(String containerLogFile) { 072 this.containerLogFile = containerLogFile; 073 } 074}