1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.logging.log4j.log4j12; 19 20 import java.util.List; 21 22 import org.apache.commons.logging.log4j.StandardTests; 23 import org.apache.log4j.AppenderSkeleton; 24 import org.apache.log4j.spi.LoggingEvent; 25 26 /** 27 * A custom implementation of {@code org.apache.log4j.Appender} which 28 * converts the Log4j-specific log event record into a representation that 29 * doesn't have a dependency on log4j and stores that new representation into 30 * an external list. 31 */ 32 33 public class TestAppender extends AppenderSkeleton { 34 35 // The set of logged events for this appender 36 private final List events; 37 38 /** 39 * Constructs a new instance. 40 */ 41 public TestAppender(final List logEvents) { 42 events = logEvents; 43 } 44 45 @Override 46 protected void append(final LoggingEvent event) { 47 final StandardTests.LogEvent lev = new StandardTests.LogEvent(); 48 49 lev.level = event.getLevel().toString(); 50 51 if (event.getMessage() == null) { 52 lev.msg = null; 53 } else { 54 lev.msg = event.getMessage().toString(); 55 } 56 57 if (event.getThrowableInformation() == null) { 58 lev.throwable = null; 59 } else { 60 lev.throwable = event.getThrowableInformation().getThrowable(); 61 } 62 63 events.add(lev); 64 } 65 66 @Override 67 public void close() { 68 } 69 70 @Override 71 public boolean requiresLayout() { 72 return false; 73 } 74 75 }