content: /*
   * Copyright 1999-2018 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.pool;
  
  import com.alibaba.druid.mock.MockDriver;
  import junit.framework.TestCase;
  import org.junit.Assert;
  
  import java.sql.Connection;
  import java.util.concurrent.CountDownLatch;
  
  public class TestIdle3_Concurrent_MaxActive extends TestCase {
      private MockDriver driver;
      private DruidDataSource dataSource;
  
      protected void setUp() throws Exception {
          driver = new MockDriver();
  
          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(300 * 1000); // 300 / 10
          dataSource.setTimeBetweenEvictionRunsMillis(180 * 1000); // 180 / 10
          dataSource.setTestWhileIdle(true);
          dataSource.setTestOnBorrow(false);
          dataSource.setValidationQuery("SELECT 1");
          dataSource.setFilters("stat");
      }
  
      public void test_idle2() throws Exception {
          // 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(1, driver.getConnections().size());
              Assert.assertEquals(1, dataSource.getCreateCount());
              Assert.assertEquals(0, dataSource.getActiveCount());
          }
  
          for (int i = 0; i < 1000; ++i) {
              concurrent(200);
              Assert.assertEquals("" + i, true, dataSource.getPoolingCount() <= dataSource.getMaxActive());
              dataSource.shrink();
          }
  
          // 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());
              conn.close();
          }
          // Assert.assertEquals(2, dataSource.getPoolingCount());
  
          dataSource.close();
      }
  
      private void concurrent(final int threadCount) throws Exception {
          Thread[] threads = new Thread[threadCount];
          final CountDownLatch startLatch = new CountDownLatch(1);
          final CountDownLatch endLatch = new CountDownLatch(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 < 1000; ++i) {
                              Connection conn = dataSource.getConnection();
                              conn.close();
                          }
                      } catch (Exception e) {
                          e.printStackTrace();
                      } finally {
                          endLatch.countDown();
                      }
                  }
              };
          }
  
          startLatch.countDown();
          for (int i = 0; i < threadCount; ++i) {
              threads[i].start();
          }
  
          endLatch.await();
  
          // int max = count > dataSource.getMaxActive() ? dataSource.getMaxActive() : count;
          // Assert.assertEquals(max, driver.getConnections().size());
      }
  }
  