| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache license, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the license for the specific language governing permissions and |
| * limitations under the license. |
| */ |
| package org.apache.logging.log4j.test.appender; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.logging.log4j.LoggingException; |
| import org.apache.logging.log4j.core.Appender; |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.appender.AbstractAppender; |
| import org.apache.logging.log4j.plugins.Plugin; |
| import org.apache.logging.log4j.plugins.PluginAttribute; |
| import org.apache.logging.log4j.plugins.PluginFactory; |
| import org.apache.logging.log4j.plugins.validation.constraints.Required; |
| |
| /** |
| * |
| */ |
| @Plugin(name="FailOnce", category ="Core", elementType=Appender.ELEMENT_TYPE, printObject=true) |
| public class FailOnceAppender extends AbstractAppender { |
| |
| boolean fail = true; |
| |
| private final List<LogEvent> events = new ArrayList<>(); |
| |
| private FailOnceAppender(final String name) { |
| super(name, null, null, false, null); |
| } |
| |
| @Override |
| public void append(final LogEvent event) { |
| if (fail) { |
| fail = false; |
| throw new LoggingException("Always fail"); |
| } |
| events.add(event); |
| } |
| |
| public List<LogEvent> getEvents() { |
| final List<LogEvent> list = new ArrayList<>(events); |
| events.clear(); |
| return list; |
| } |
| |
| @PluginFactory |
| public static FailOnceAppender createAppender( |
| @PluginAttribute @Required(message = "A name for the Appender must be specified") final String name) { |
| return new FailOnceAppender(name); |
| } |
| |
| } |