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.bvt.proxy.filter;
  
  import com.alibaba.druid.filter.stat.StatFilter;
  import com.alibaba.druid.pool.DruidDataSource;
  import com.alibaba.druid.stat.JdbcSqlStat;
  import junit.framework.TestCase;
  
  import java.sql.Connection;
  import java.sql.Statement;
  import java.util.concurrent.CountDownLatch;
  
  public class StatFilterConcurrentTest extends TestCase {
      private DruidDataSource dataSource;
      private StatFilter statFilter;
      private int LOOP_COUNT = 1000 * 1;
  
      public void setUp() throws Exception {
          dataSource = new DruidDataSource();
          dataSource.setUrl("jdbc:mock:xxx");
          dataSource.setMaxActive(100);
  
          statFilter = new StatFilter();
          dataSource.getProxyFilters().add(statFilter);
          dataSource.setConnectionProperties("executeSleep=1");
      }
  
      public void tearDown() throws Exception {
          dataSource.close();
      }
  
      public void test_stat() throws Exception {
          concurrent(100);
          for (JdbcSqlStat sqlStat : dataSource.getDataSourceStat().getSqlStatMap().values()) {
              System.out.println(sqlStat.getConcurrentMax());
          }
      }
  
      public void concurrent(int threadCount) throws Exception {
          Thread[] threads = new Thread[threadCount];
          final CountDownLatch endLatch = new CountDownLatch(threadCount);
  
          for (int i = 0; i < threadCount; ++i) {
              threads[i] = new Thread() {
                  public void run() {
                      try {
                          for (int i = 0; i < LOOP_COUNT; ++i) {
                              Connection conn = dataSource.getConnection();
                              Statement stmt = conn.createStatement();
                              stmt.executeUpdate("select 1");
                              stmt.close();
                              conn.close();
                          }
                      } catch (Exception e) {
                          e.printStackTrace();
                      } finally {
                          endLatch.countDown();
                      }
                  }
              };
          }
  
          for (int i = 0; i < threadCount; ++i) {
              threads[i].start();
          }
          endLatch.await();
      }
  }
  