| /* |
| * 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.core.async; |
| |
| import java.util.List; |
| import java.util.Stack; |
| import java.util.concurrent.CountDownLatch; |
| |
| import org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.core.categories.AsyncLoggers; |
| import org.apache.logging.log4j.core.config.ConfigurationFactory; |
| import org.apache.logging.log4j.core.junit.LoggerContextRule; |
| import org.apache.logging.log4j.status.StatusData; |
| import org.apache.logging.log4j.status.StatusLogger; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.BlockJUnit4ClassRunner; |
| |
| import static org.hamcrest.core.StringContains.containsString; |
| import static org.junit.Assert.*; |
| |
| /** |
| * Tests queue full scenarios with AsyncLoggers in configuration. |
| */ |
| @RunWith(BlockJUnit4ClassRunner.class) |
| @Category(AsyncLoggers.class) |
| public class QueueFullAsyncLoggerConfigLoggingFromToStringTest extends QueueFullAbstractTest { |
| |
| @BeforeClass |
| public static void beforeClass() { |
| System.setProperty("log4j2.enable.threadlocals", "true"); |
| System.setProperty("log4j2.is.webapp", "false"); |
| System.setProperty("AsyncLoggerConfig.RingBufferSize", "128"); |
| System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY, |
| "log4j2-queueFullAsyncLoggerConfig.xml"); |
| } |
| |
| @Rule |
| public LoggerContextRule context = new LoggerContextRule( |
| "log4j2-queueFullAsyncLoggerConfig.xml"); |
| |
| @Before |
| public void before() throws Exception { |
| blockingAppender = context.getRequiredAppender("Blocking", BlockingAppender.class); |
| } |
| |
| @Test(timeout = 5000) |
| public void testLoggingFromToStringCausesOutOfOrderMessages() throws InterruptedException { |
| //TRACE = true; |
| final Logger logger = LogManager.getLogger(this.getClass()); |
| |
| blockingAppender.countDownLatch = new CountDownLatch(1); |
| unlocker = new Unlocker(new CountDownLatch(129)); // count slightly different from "pure" async loggers |
| unlocker.start(); |
| |
| asyncLoggerConfigRecursiveTest(logger, unlocker, blockingAppender, this); |
| } |
| |
| static void asyncLoggerConfigRecursiveTest(final Logger logger, |
| final Unlocker unlocker, |
| final BlockingAppender blockingAppender, |
| final QueueFullAbstractTest factory) { |
| for (int i = 0; i < 1; i++) { |
| TRACE("Test logging message " + i + ". Remaining capacity=" + asyncRemainingCapacity(logger)); |
| TRACE("Test decrementing unlocker countdown latch. Count=" + unlocker.countDownLatch.getCount()); |
| unlocker.countDownLatch.countDown(); |
| final DomainObject obj = factory.new DomainObject(129); |
| logger.info("logging naughty object #{} {}", i, obj); |
| } |
| TRACE("Before stop() blockingAppender.logEvents.count=" + blockingAppender.logEvents.size()); |
| //CoreLoggerContexts.stopLoggerContext(false); // stop async thread |
| while (blockingAppender.logEvents.size() < 130) { Thread.yield(); } |
| TRACE("After stop() blockingAppender.logEvents.count=" + blockingAppender.logEvents.size()); |
| |
| final Stack<String> actual = transform(blockingAppender.logEvents); |
| assertEquals("Logging in toString() #0", actual.pop()); |
| List<StatusData> statusDataList = StatusLogger.getLogger().getStatusData(); |
| assertEquals("Jumped the queue: queue full", |
| "Logging in toString() #128", actual.pop()); |
| StatusData mostRecentStatusData = statusDataList.get(statusDataList.size() - 1); |
| assertEquals("Expected warn level status message", Level.WARN, mostRecentStatusData.getLevel()); |
| assertThat(mostRecentStatusData.getFormattedStatus(), containsString( |
| "Log4j2 logged an event out of order to prevent deadlock caused by domain " + |
| "objects logging from their toString method when the async queue is full")); |
| |
| for (int i = 1; i < 128; i++) { |
| assertEquals("First batch", "Logging in toString() #" + i, actual.pop()); |
| } |
| assertEquals("logging naughty object #0 Who's bad?!", actual.pop()); |
| assertTrue(actual.isEmpty()); |
| } |
| } |