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.pattern; 18 19 import org.apache.logging.log4j.core.LogEvent; 20 import org.apache.logging.log4j.core.config.plugins.Plugin; 21 22 /** 23 * Formats the event thread name. 24 */ 25 @Plugin(name = "ThreadPatternConverter", category = PatternConverter.CATEGORY) 26 @ConverterKeys({ "t", "thread" }) 27 public final class ThreadPatternConverter extends LogEventPatternConverter { 28 /** 29 * Singleton. 30 */ 31 private static final ThreadPatternConverter INSTANCE = 32 new ThreadPatternConverter(); 33 34 /** 35 * Private constructor. 36 */ 37 private ThreadPatternConverter() { 38 super("Thread", "thread"); 39 } 40 41 /** 42 * Obtains an instance of ThreadPatternConverter. 43 * 44 * @param options options, currently ignored, may be null. 45 * @return instance of ThreadPatternConverter. 46 */ 47 public static ThreadPatternConverter newInstance( 48 final String[] options) { 49 return INSTANCE; 50 } 51 52 /** 53 * {@inheritDoc} 54 */ 55 @Override 56 public void format(final LogEvent event, final StringBuilder toAppendTo) { 57 toAppendTo.append(event.getThreadName()); 58 } 59 }