| /* |
| * 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.layout; |
| |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.core.LoggerContext; |
| import org.apache.logging.log4j.core.junit.LoggerContextSource; |
| import org.junit.jupiter.api.AfterAll; |
| import org.junit.jupiter.api.Tag; |
| import org.junit.jupiter.api.Test; |
| |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.stream.Stream; |
| |
| import static org.hamcrest.CoreMatchers.*; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| /** |
| * Test for LOG4J2-1769, kind of. |
| * |
| * @since 2.8 |
| */ |
| @Tag("concurrency") |
| public class ConcurrentLoggingWithGelfLayoutTest { |
| private static final Path PATH = Paths.get("target", "test-gelf-layout.log"); |
| |
| @AfterAll |
| static void after() throws IOException { |
| // on Windows, this will need to happen after the LoggerContext is stopped |
| Files.deleteIfExists(PATH); |
| } |
| |
| @Test |
| @LoggerContextSource("log4j2-gelf-layout.xml") |
| public void testConcurrentLogging(final LoggerContext context) throws Throwable { |
| final Logger log = context.getLogger(ConcurrentLoggingWithGelfLayoutTest.class); |
| final int threadCount = Runtime.getRuntime().availableProcessors() * 2; |
| final CountDownLatch latch = new CountDownLatch(threadCount); |
| final List<Throwable> thrown = Collections.synchronizedList(new ArrayList<>()); |
| |
| for (int x = 0; x < threadCount; x++) { |
| final Thread t = new Thread(() -> { |
| log.info(latch.getCount()); |
| try { |
| for (int i = 0; i < 64; i++) { |
| log.info("First message."); |
| log.info("Second message."); |
| } |
| } finally { |
| latch.countDown(); |
| } |
| }); |
| |
| // Appender is configured with ignoreExceptions="false"; |
| // any exceptions are propagated to the caller, so we can catch them here. |
| t.setUncaughtExceptionHandler((t1, e) -> thrown.add(e)); |
| t.start(); |
| } |
| |
| latch.await(); |
| |
| // if any error occurred, fail this test |
| if (!thrown.isEmpty()) { |
| throw thrown.get(0); |
| } |
| |
| // simple test to ensure content is not corrupted |
| if (Files.exists(PATH)) { |
| try (Stream<String> lines = Files.lines(PATH, Charset.defaultCharset())) { |
| lines.forEach(line -> assertThat(line, |
| both(startsWith("{\"version\":\"1.1\",\"host\":\"myself\",\"timestamp\":")).and(endsWith("\"}")))); |
| } |
| } |
| } |
| |
| } |