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HSQLDB - Lightweight 100% Java SQL Database Engine
/* Copyright (c) 2001-2019, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* Copyright (c) 2001-2011, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.test;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Enumeration;
import junit.framework.TestCase;
import junit.framework.TestResult;
/**
* This tests simply executes more than 2^16 times a 'SELECT *' on a 2-row
* table. If no Keep-Alive is used your OS will run out of ports for connections
* being repeatedly opened for each SELECT that is executed. If Keep-Alive is
* being used, this test will complete in a about 5 seconds on an ivy-bridge
* class machine
*
* @author Aart de Vries
*/
public class TestHTTPKeepAlive extends TestBase {
static Integer failCount = 0;
static Integer executeCount = 0;
private Statement stmnt;
private Connection connection;
public TestHTTPKeepAlive(String name) {
super(name);
}
protected void setUp() throws Exception {
super.setUp();
connection = newConnection();
stmnt = connection.createStatement();
stmnt.execute(
"CREATE TABLE IF NOT EXISTS link_table (id INTEGER PRIMARY KEY NOT NULL, other TINYINT NOT NULL)");
stmnt.execute("INSERT INTO link_table VALUES ((0, 1),(1, 2))");
}
protected void tearDown() {
try {
stmnt.execute("DROP TABLE IF EXISTS link_table");
connection.close();
} catch (Exception e) {
e.printStackTrace();
System.out.println("TestSql.tearDown() error: " + e.getMessage());
}
super.tearDown();
}
class KeepAliveThread extends Thread {
public void run() {
Connection c = null;
try {
c = newConnection();
final Statement statement = c.createStatement();
for (int i = 0; i <= 16500; i++) {
statement.executeQuery("SELECT * FROM link_table");
synchronized (executeCount) {
executeCount++;
}
}
} catch (SQLException e) {
e.printStackTrace(System.out);
} finally {
try {
c.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
class TimeoutThread extends Thread {
public void run() {
Thread t = new KeepAliveThread();
t.start();
try {
t.join(15000);
if (t.isAlive()) { // If thread still running, then it's probably blocked because the ports are exhausted
synchronized (failCount) {
if (failCount == 0) {
failCount++;
fail("Keep-Alive is probably not being used");
}
}
}
} catch (InterruptedException ex) {}
}
}
public void testKeepAlive() {
Thread t1 = new TimeoutThread();
t1.start();
Thread t2 = new TimeoutThread();
t2.start();
Thread t3 = new TimeoutThread();
t3.start();
Thread t4 = new TimeoutThread();
t4.start();
try {
t1.join();
t2.join();
t3.join();
t4.join();
} catch (InterruptedException e) {}
System.out.println("testKeepAlive completed " + executeCount
+ "connections.\n");
}
public static void main(String[] argv) {
TestResult result = new TestResult();
TestCase testKeepAlive = new TestHTTPKeepAlive("testKeepAlive");
testKeepAlive.run(result);
System.out.println("TestKeepAlive error count: "
+ result.failureCount());
Enumeration e = result.failures();
while (e.hasMoreElements()) {
System.out.println(e.nextElement());
}
}
}