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 package org.apache.logging.log4j.core; 18 19 import java.io.Serializable; 20 21 /** 22 * Appends log events. 23 * 24 * @param <T> The {@link Layout}'s {@link Serializable} type. 25 */ 26 public interface Appender<T extends Serializable> extends LifeCycle { 27 28 /** 29 * Log in <code>Appender</code> specific way. When appropriate, 30 * Loggers will call the <code>doAppend</code> method of appender 31 * implementations in order to log. 32 * 33 * @param event The LogEvent. 34 */ 35 void append(LogEvent event); 36 37 38 /** 39 * Get the name of this appender. 40 * 41 * @return name, may be null. 42 */ 43 String getName(); 44 45 /** 46 * Returns this appender's layout. 47 * 48 * @return the Layout for the Appender or null if none is configured. 49 */ 50 Layout<T> getLayout(); 51 52 /** 53 * If set to true any exceptions thrown by the Appender will be logged but not thrown. 54 * @return true if Exceptions should be suppressed, false otherwise. 55 */ 56 boolean isExceptionSuppressed(); 57 58 ErrorHandler getHandler(); 59 60 void setHandler(ErrorHandler handler); 61 62 }