content: /**
   * 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 com.alibaba.wasp.jdbc;
  
  import com.alibaba.wasp.FConstants;
  import com.alibaba.wasp.ReadModel;
  import com.alibaba.wasp.WaspTestingUtility;
  import com.alibaba.wasp.client.FClient;
  import com.alibaba.wasp.fserver.EntityGroup;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.hadoop.hbase.MediumTests;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.junit.AfterClass;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  import java.io.IOException;
  import java.sql.Connection;
  import java.sql.SQLException;
  import java.sql.Statement;
  import java.util.Random;
  import java.util.concurrent.atomic.AtomicInteger;
  
  /**
   *
   */
  @Category(MediumTests.class)
  // Starts 100 threads
  public class TestAtomicOperation extends TestJdbcBase {
    static final Log LOG = LogFactory.getLog(TestAtomicOperation.class);
  
    EntityGroup entityGroup = null;
  
    private static Connection conn;
    private static Statement stat;
  
    private final static WaspTestingUtility TEST_UTIL = new WaspTestingUtility();
    private static FClient client;
  
    // Test names
    static final String TABLE_NAME = "testtable";
    static final byte[] TABLE = Bytes.toBytes(TABLE_NAME);
  
    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
      TEST_UTIL.getConfiguration().setInt("wasp.client.retries.number", 3);
      TEST_UTIL.startMiniCluster(3);
      TEST_UTIL.createTable(TABLE);
      TEST_UTIL.getWaspAdmin().disableTable(TABLE);
      client = new FClient(TEST_UTIL.getConfiguration());
      client.execute("create index test_index on " + TABLE_NAME + "(column3);");
      TEST_UTIL.getWaspAdmin().waitTableNotLocked(TABLE);
      client.execute("create index test_index2 on " + TABLE_NAME + "(column2);");
      TEST_UTIL.getWaspAdmin().waitTableNotLocked(TABLE);
      client.execute("create index test_index3 on " + TABLE_NAME
          + "(column1,column3);");
      TEST_UTIL.getWaspAdmin().waitTableNotLocked(TABLE);
      TEST_UTIL.getWaspAdmin().enableTable(TABLE);
  
      Class.forName("com.alibaba.wasp.jdbc.Driver");
      conn = getConnection("test", TEST_UTIL.getConfiguration());
      conn.setClientInfo(FConstants.READ_MODEL, ReadModel.CURRENT.name());
      stat = conn.createStatement();
    }
  
    @AfterClass
    public static void tearDownAfterClass() throws Exception {
      TEST_UTIL.shutdownMiniCluster();
      stat.close();
      conn.close();
    }
  
    /**
     * Test multi-threaded row mutations.
     */
    @Test
    public void testRowMutationMultiThreads() throws IOException {
  
      LOG.info("Starting test testRowMutationMultiThreads");
  
      // create 100 threads, each will alternate between adding and
      // removing a column
      int numThreads = 10;
      int opsPerThread = 50;
      AtomicOperation[] all = new AtomicOperation[numThreads];
  
      AtomicInteger failures = new AtomicInteger(0);
      // create all threads
      for (int i = 0; i < numThreads; i++) {
        try {
          all[i] = new AtomicOperation(entityGroup, opsPerThread, conn,
              failures) {
            @Override
            public void run() {
              for (int i = 0; i < numOps; i++) {
                try {
                  int lines = stmt.executeUpdate("insert into " + TABLE_NAME + " (column1,column2,column3) values(1,1,'wasptest')");
                  if (lines != 1) {
                    LOG.debug(r);
                    failures.incrementAndGet();
                    fail();
                  }
                } catch (SQLException e) {
                  failures.incrementAndGet();
                }
              }
            }
          };
        } catch (SQLException e) {
        }
      }
  
      // run all threads
      for (int i = 0; i < numThreads; i++) {
        all[i].start();
      }
  
      // wait for all threads to finish
      for (int i = 0; i < numThreads; i++) {
        try {
          all[i].join();
        } catch (InterruptedException e) {
        }
      }
      System.out.println(failures.get());
      assertEquals(opsPerThread * numThreads - 1, failures.get());
    }
  
    public static class AtomicOperation extends Thread {
      protected final EntityGroup entityGroup;
      protected final int numOps;
      protected final Connection conn;
      protected final AtomicInteger failures;
      protected final Random r = new Random();
      protected final Statement stmt;
  
  
      public AtomicOperation(EntityGroup entityGroup, int numOps,
          Connection conn, AtomicInteger failures) throws SQLException {
        this.entityGroup = entityGroup;
        this.numOps = numOps;
        this.conn = conn;
        this.failures = failures;
        this.stmt = conn.createStatement();
      }
    }
  
    @org.junit.Rule
    public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu = new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
  }
  