001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.appender; 018 019import java.util.Objects; 020import java.util.concurrent.atomic.AtomicLong; 021 022import org.apache.logging.log4j.core.Layout; 023import org.apache.logging.log4j.core.LogEvent; 024import org.apache.logging.log4j.core.config.plugins.Plugin; 025import org.apache.logging.log4j.core.config.plugins.PluginAttribute; 026import org.apache.logging.log4j.core.config.plugins.PluginFactory; 027 028/** 029 * No-Operation Appender that counts events. 030 */ 031@Plugin(name = "CountingNoOp", category = "Core", elementType = "appender", printObject = true) 032public class CountingNoOpAppender extends AbstractAppender { 033 034 private AtomicLong total = new AtomicLong(); 035 036 public CountingNoOpAppender(String name, Layout<?> layout) { 037 super(name, null, layout); 038 } 039 040 public long getCount() { 041 return total.get(); 042 } 043 044 @Override 045 public void append(LogEvent event) { 046 total.incrementAndGet(); 047 } 048 049 /** 050 * Creates a CountingNoOp Appender. 051 */ 052 @PluginFactory 053 public static CountingNoOpAppender createAppender(@PluginAttribute("name") final String name) { 054 return new CountingNoOpAppender(Objects.requireNonNull(name), null); 055 } 056}