/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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.alibaba.druid;
import java.lang.management.ManagementFactory;
import java.sql.Connection;
import java.util.concurrent.CountDownLatch;
import javax.management.ObjectName;
import org.junit.Assert;
import junit.framework.TestCase;
import com.alibaba.druid.mock.MockDriver;
import com.alibaba.druid.pool.DruidDataSource;
public class TestIdel3 extends TestCase {
public void test_idle2() throws Exception {
MockDriver driver = new MockDriver();
final DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl("jdbc:mock:xxx");
dataSource.setDriver(driver);
dataSource.setInitialSize(1);
dataSource.setMaxActive(14);
dataSource.setMaxIdle(14);
dataSource.setMinIdle(1);
dataSource.setMinEvictableIdleTimeMillis(3 * 100); // 300 / 10
dataSource.setTimeBetweenEvictionRunsMillis(18 * 10); // 180 / 10
dataSource.setTestWhileIdle(true);
dataSource.setTestOnBorrow(false);
dataSource.setValidationQuery("SELECT 1");
dataSource.setFilters("stat");
ManagementFactory.getPlatformMBeanServer().registerMBean(dataSource,
new ObjectName("com.alibaba:type=DataSource"));
// 第一次创建连接
{
Assert.assertEquals(0, dataSource.getCreateCount());
Assert.assertEquals(0, dataSource.getActiveCount());
Connection conn = dataSource.getConnection();
Assert.assertEquals(dataSource.getInitialSize(), dataSource.getCreateCount());
Assert.assertEquals(dataSource.getInitialSize(), driver.getConnections().size());
Assert.assertEquals(1, dataSource.getActiveCount());
conn.close();
Assert.assertEquals(0, dataSource.getDestroyCount());
Assert.assertEquals(2, driver.getConnections().size());
Assert.assertEquals(2, dataSource.getCreateCount());
Assert.assertEquals(0, dataSource.getActiveCount());
}
{
// 并发创建14个
int count = 14;
Connection[] connections = new Connection[count];
for (int i = 0; i < count; ++i) {
connections[i] = dataSource.getConnection();
Assert.assertEquals(i + 1, dataSource.getActiveCount());
}
Assert.assertEquals(dataSource.getMaxActive(), dataSource.getCreateCount());
Assert.assertEquals(count, driver.getConnections().size());
// 全部关闭
for (int i = 0; i < count; ++i) {
connections[i].close();
Assert.assertEquals(count - i - 1, dataSource.getActiveCount());
}
Assert.assertEquals(dataSource.getMaxActive(), dataSource.getCreateCount());
Assert.assertEquals(0, dataSource.getActiveCount());
Assert.assertEquals(14, driver.getConnections().size());
}
concurrent(dataSource, 100, 1000);
concurrent(dataSource, 1, 1000 * 1000);
Thread.sleep(1000 * 10);
concurrent(dataSource, 1, 1000 * 1000);
Thread.sleep(1000 * 10);
concurrent(dataSource, 1000, 1000 * 1000);
Assert.assertEquals(driver.getConnections().size(), dataSource.getPoolingCount());
Assert.assertEquals(0, dataSource.getActiveCount());
// 连续打开关闭单个连接
for (int i = 0; i < 1000; ++i) {
Assert.assertEquals(0, dataSource.getActiveCount());
Connection conn = dataSource.getConnection();
Assert.assertEquals(1, dataSource.getActiveCount());
Thread.sleep(10);
conn.close();
}
// Assert.assertEquals(2, dataSource.getPoolingCount());
Thread.sleep(1000 * 100);
dataSource.close();
}
private void concurrent(final DruidDataSource dataSource, int threadCount, final int loopCount)
throws InterruptedException {
final CountDownLatch startLatch = new CountDownLatch(1);
final CountDownLatch endLatch = new CountDownLatch(threadCount);
Thread[] threads = new Thread[threadCount];
for (int i = 0; i < threadCount; ++i) {
threads[i] = new Thread("thread-" + i) {
public void run() {
try {
startLatch.await();
for (int i = 0; i < loopCount; ++i) {
Connection conn = null;
conn = dataSource.getConnection();
conn.close();
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
endLatch.countDown();
}
}
};
}
for (int i = 0; i < threadCount; ++i) {
threads[i].start();
}
startLatch.countDown();
System.out.println("concurrent start...");
endLatch.await();
System.out.println("concurrent end");
}
}