package com.alibaba.druid.pool.postgres;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.junit.Assert;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.pool.vendor.PGValidConnectionChecker;
import com.alibaba.druid.util.JdbcUtils;
import junit.framework.TestCase;
/**
* 这个场景测试minIdle > maxActive
*
* @author wenshao [szujobs@hotmail.com]
*/
public class PG_500_connection_Test extends TestCase {
private DruidDataSource dataSource;
protected void setUp() throws Exception {
dataSource = new DruidDataSource();
dataSource.setUrl("jdbc:postgresql://192.168.199.231:5432/druid_test_db");
dataSource.setUsername("druid_test");
dataSource.setPassword("druid_test");
dataSource.setInitialSize(50);
dataSource.setMaxActive(80);
dataSource.setMinIdle(50);
dataSource.setMinEvictableIdleTimeMillis(300 * 1000); // 300 / 10
dataSource.setTimeBetweenEvictionRunsMillis(180 * 1000); // 180 / 10
dataSource.setTestWhileIdle(false);
dataSource.setTestOnBorrow(false);
// dataSource.setValidationQuery("SELECT 1 FROM DUAL");
dataSource.setFilters("stat");
}
protected void tearDown() throws Exception {
dataSource.close();
}
public void test_conect_500() throws Exception {
dataSource.init();
Assert.assertFalse(dataSource.isOracle());
Assert.assertTrue(dataSource.getValidConnectionChecker() instanceof PGValidConnectionChecker);
int taskCount = 1000 * 100;
final CountDownLatch endLatch = new CountDownLatch(taskCount);
Runnable task = new Runnable() {
@Override
public void run() {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
conn = dataSource.getConnection();
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT 1");
while (rs.next()) {
}
} catch (SQLException ex) {
// skip
} finally {
endLatch.countDown();
}
JdbcUtils.close(rs);
JdbcUtils.close(stmt);
JdbcUtils.close(conn);
}
};
ExecutorService executor = Executors.newFixedThreadPool(100);
for (int i = 0; i < taskCount; ++i) {
executor.submit(task);
}
endLatch.await();
}
}