| /* |
| * 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.commons.dbcp2; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.time.Duration; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.commons.logging.LogFactory; |
| import org.junit.jupiter.api.BeforeAll; |
| import org.junit.jupiter.api.BeforeEach; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * Test if the pooling if no idle objects are used |
| */ |
| public class TestParallelCreationWithNoIdle { |
| |
| |
| class TestThread extends Thread { |
| final java.util.Random _random = new java.util.Random(); |
| final int iter; |
| final int delay; |
| final int delayAfter; |
| |
| |
| public TestThread(final int iter, final int delay, final int delayAfter) { |
| this.iter = iter; |
| this.delay = delay; |
| this.delayAfter = delayAfter; |
| } |
| |
| |
| @Override |
| public void run() { |
| // System.out.println("Thread started " + Thread.currentThread().toString()); |
| for (int i = 0; i < iter; i++) { |
| sleepMax(delay); |
| try (Connection conn = ds.getConnection(); |
| PreparedStatement stmt = conn.prepareStatement("select 'literal', SYSDATE from dual")) { |
| // System.out.println("Got Connection " + Thread.currentThread().toString()); |
| final ResultSet rset = stmt.executeQuery(); |
| rset.next(); |
| sleepMax(delayAfter); |
| rset.close(); |
| } catch (final Exception e) { |
| e.printStackTrace(); |
| throw new RuntimeException(e); |
| } |
| } |
| // System.out.println("Thread done " + Thread.currentThread().toString()); |
| } |
| |
| private void sleepMax(final int timeMax) { |
| if (timeMax == 0) { |
| return; |
| } |
| try { |
| Thread.sleep(_random.nextInt(timeMax)); |
| } catch(final Exception e) { |
| // ignored |
| } |
| } |
| } |
| private static final String CATALOG = "test catalog"; |
| |
| @BeforeAll |
| public static void setUpClass() { |
| // register a custom logger which supports inspection of the log messages |
| LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", "org.apache.commons.dbcp2.StackMessageLog"); |
| } |
| |
| protected BasicDataSource ds; |
| |
| @BeforeEach |
| public void setUp() throws Exception { |
| ds = new BasicDataSource(); |
| ds.setDriverClassName("org.apache.commons.dbcp2.TesterConnectionDelayDriver"); |
| ds.setUrl("jdbc:apache:commons:testerConnectionDelayDriver:50"); |
| ds.setMaxTotal(10); |
| |
| // this one is actually very important. |
| // see DBCP-513 |
| ds.setMaxIdle(0); |
| |
| // wait a minute. Usually the test runs in ~ 1 second |
| // but often it's getting stuck ^^ |
| // you have one second to get a thread dump ;) |
| ds.setMaxWait(Duration.ofMinutes(1)); |
| |
| ds.setDefaultAutoCommit(Boolean.TRUE); |
| ds.setDefaultReadOnly(Boolean.FALSE); |
| ds.setDefaultTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED); |
| ds.setDefaultCatalog(CATALOG); |
| ds.setUsername("userName"); |
| ds.setPassword("password"); |
| ds.setValidationQuery("SELECT DUMMY FROM DUAL"); |
| ds.setConnectionInitSqls(Arrays.asList("SELECT 1", "SELECT 2")); |
| ds.setDriverClassLoader(new TesterClassLoader()); |
| ds.setJmxName("org.apache.commons.dbcp2:name=test"); |
| } |
| |
| |
| |
| /** |
| * Fire up 100 Threads but only have 10 maxActive and forcedBlock. |
| * See |
| * @throws Exception |
| */ |
| @Test |
| public void testMassiveConcurrentInitBorrow() throws Exception { |
| final int numThreads = 200; |
| ds.setDriverClassName("org.apache.commons.dbcp2.TesterConnectionDelayDriver"); |
| ds.setUrl("jdbc:apache:commons:testerConnectionDelayDriver:20"); |
| ds.setInitialSize(8); |
| final List<Throwable> errors = Collections.synchronizedList(new ArrayList<>()); |
| |
| final Thread[] threads = new Thread[numThreads]; |
| for (int i = 0; i < numThreads; i++) { |
| threads[i] = new TestThread(2, 0, 50); |
| threads[i].setUncaughtExceptionHandler((t, e) -> errors.add(e)); |
| } |
| |
| for (int i = 0; i < numThreads; i++) { |
| threads[i].start(); |
| |
| if (i%4 == 0) { |
| Thread.sleep(20); |
| } |
| } |
| |
| for (int i = 0; i < numThreads; i++) { |
| threads[i].join(); |
| } |
| |
| assertEquals(0, errors.size()); |
| ds.close(); |
| } |
| |
| } |