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/*
* 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.juli;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDate;
import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.logging.Formatter;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.apache.juli.AsyncFileHandler.LoggerExecutorService;
@RunWith(Parameterized.class)
public class TestAsyncFileHandlerOverflow {
private static final String PREFIX = "TestAsyncFileHandler.";
private static final String SUFFIX = ".log";
private static final Logger logger = Logger.getLogger(TestAsyncFileHandlerOverflow.class.getName());
{
logger.setUseParentHandlers(false);
}
@Parameters(name = "{index}: overflowDropType[{0}]")
public static Collection<Object[]> parameters() {
return Arrays.asList(new Object[][] {
{ Integer.valueOf(AsyncFileHandler.OVERFLOW_DROP_LAST), "START\n1\n3\n" },
{ Integer.valueOf(AsyncFileHandler.OVERFLOW_DROP_FIRST), "START\n2\n3\n" },
{ Integer.valueOf(AsyncFileHandler.OVERFLOW_DROP_FLUSH), "START\n1\n2\n3\n" },
{ Integer.valueOf(AsyncFileHandler.OVERFLOW_DROP_CURRENT), "START\n1\n2\n" } });
}
private final CountDownLatch latch = new CountDownLatch(1);
private Path logsDir;
private LoggerExecutorService loggerService;
private AsyncFileHandler handler;
private final int overflowDropType;
private final String expected;
public TestAsyncFileHandlerOverflow(final int overflowDropType, final String expected) {
this.overflowDropType = overflowDropType;
this.expected = expected;
}
@Before
public void setUp() throws IOException {
final Path logsBase = Paths.get(System.getProperty("tomcat.test.temp", "output/tmp"));
Files.createDirectories(logsBase);
this.logsDir = Files.createTempDirectory(logsBase, "test");
final Formatter formatter = new Formatter() {
@Override
public String format(LogRecord record) {
return record.getMessage() + "\n";
}
};
// Setup an executor that blocks until the first rejection
this.loggerService = new LoggerExecutorService(overflowDropType, 2) {
@Override
protected void beforeExecute(Thread t, Runnable r) {
try {
latch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
super.beforeExecute(t, r);
}
};
final RejectedExecutionHandler rejectionHandler = loggerService.getRejectedExecutionHandler();
loggerService.setRejectedExecutionHandler(new RejectedExecutionHandler() {
@Override
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
// Generally, the latch needs to be released after the
// RejectedExecutionHandler has completed but for the flush case
// the latch needs to be released first (else the test loops)
if (overflowDropType == AsyncFileHandler.OVERFLOW_DROP_FLUSH) {
latch.countDown();
}
rejectionHandler.rejectedExecution(r, executor);
if (overflowDropType != AsyncFileHandler.OVERFLOW_DROP_FLUSH) {
latch.countDown();
}
}
});
this.handler = new AsyncFileHandler(logsDir.toString(), PREFIX, SUFFIX, Integer.valueOf(1), loggerService);
handler.setFormatter(formatter);
logger.addHandler(handler);
handler.open();
}
@After
public void cleanUp() {
handler.close();
logger.removeHandler(handler);
}
@Test
public void testOverFlow() throws IOException, InterruptedException {
handler.open();
logger.warning("START"); // blocks async thread
// these are queued
logger.warning("1");
logger.warning("2");
logger.warning("3"); // overflows executor and unblocks aync thread
loggerService.shutdown();
// after shutdown was issued
logger.warning("IGNORE");
loggerService.awaitTermination(1, TimeUnit.SECONDS);
final ByteArrayOutputStream os = new ByteArrayOutputStream();
Files.copy(logsDir.resolve(PREFIX + LocalDate.now() + SUFFIX), os);
final String actual = new String(os.toByteArray(), StandardCharsets.UTF_8);
Assert.assertEquals(expected, actual);
handler.close();
}
}
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