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/*
* Copyright (C) 2013, 2014 Brett Wooldridge
*
* Licensed 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 com.zaxxer.hikari.pool;
import static com.zaxxer.hikari.pool.TestElf.newHikariConfig;
import static com.zaxxer.hikari.pool.TestElf.setSlf4jLogLevel;
import static org.junit.Assert.fail;
import java.sql.Connection;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.logging.log4j.Level;
import org.junit.After;
import org.junit.Test;
import org.slf4j.LoggerFactory;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import com.zaxxer.hikari.util.ConcurrentBag;
/**
* @author Matthew Tambara (matthew.tambara@liferay.com)
*/
public class ConnectionRaceConditionTest
{
public static final int ITERATIONS = 10_000;
@Test
public void testRaceCondition() throws Exception
{
HikariConfig config = newHikariConfig();
config.setMinimumIdle(0);
config.setMaximumPoolSize(10);
config.setInitializationFailTimeout(Long.MAX_VALUE);
config.setConnectionTimeout(2500);
config.setDataSourceClassName("com.zaxxer.hikari.mocks.StubDataSource");
setSlf4jLogLevel(ConcurrentBag.class, Level.INFO);
final AtomicReference<Exception> ref = new AtomicReference<>(null);
// Initialize HikariPool with no initial connections and room to grow
try (final HikariDataSource ds = new HikariDataSource(config)) {
ExecutorService threadPool = Executors.newFixedThreadPool(2);
for (int i = 0; i < ITERATIONS; i++) {
threadPool.submit(new Callable<Exception>() {
/** {@inheritDoc} */
@Override
public Exception call() throws Exception
{
if (ref.get() == null) {
Connection c2;
try {
c2 = ds.getConnection();
ds.evictConnection(c2);
}
catch (Exception e) {
ref.set(e);
}
}
return null;
}
});
}
threadPool.shutdown();
threadPool.awaitTermination(30, TimeUnit.SECONDS);
if (ref.get() != null) {
LoggerFactory.getLogger(ConnectionRaceConditionTest.class).error("Task failed", ref.get());
fail("Task failed");
}
}
catch (Exception e) {
throw e;
}
}
@After
public void after()
{
System.getProperties().remove("com.zaxxer.hikari.housekeeping.periodMs");
setSlf4jLogLevel(HikariPool.class, Level.WARN);
setSlf4jLogLevel(ConcurrentBag.class, Level.WARN);
}
}
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