gemfire-core/src/test/java/com/gemstone/gemfire/internal/cache/Bug34179TooManyFilesOpenJUnitTest.java

/*=========================================================================
 * Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved.
 * This product is protected by U.S. and international copyright
 * and intellectual property laws. Pivotal products are covered by
 * one or more patents listed at http://www.pivotal.io/patents.
 *=========================================================================
 */

package com.gemstone.gemfire.internal.cache;

import static org.junit.Assert.fail;

import java.io.File;
import java.util.Arrays;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import static org.junit.Assert.*;

import com.gemstone.gemfire.LogWriter;
import com.gemstone.gemfire.test.junit.categories.IntegrationTest;


/**
 * Disk region perf test for Persist only with Async writes and  Buffer.
 * Set Rolling oplog to true and setMaxOplogSize to 10240
 * 
 * If more than some number of files are open, an Exception is thrown. This ia JDK 1.4 bug. This
 * test should be run after transition to JDK 1.5 to verify that the bug does not exceed.
 * 
 * The disk properties will ensure that very many oplog files are created.
 * 
 * This test is currently not being executed and is marked with an underscore
 *  
 */
@Category(IntegrationTest.class)
public class Bug34179TooManyFilesOpenJUnitTest extends DiskRegionTestingBase
{

  LogWriter log = null;

  DiskRegionProperties diskProps = new DiskRegionProperties();
 
  @Before
  public void setUp() throws Exception
  {
    super.setUp();
    File file1 = new File("testingDirectory/" + getName()+ "1");
    file1.mkdir();
    file1.deleteOnExit();
   dirs = new File[1];
   dirs[0] = file1;
    diskProps.setDiskDirs(dirs);
     
    diskProps.setPersistBackup(true);
    diskProps.setTimeInterval(15000l);
    diskProps.setBytesThreshold(10000l);
    diskProps.setRolling(true);
    //set max oplog size as 10 kb
    diskProps.setMaxOplogSize(10240);
    region = DiskRegionHelperFactory.getAsyncPersistOnlyRegion(cache,diskProps);
    
    log = ds.getLogWriter();
  }

  @After
  public void tearDown() throws Exception
  {
    super.tearDown();
    
  }

  
  private static int ENTRY_SIZE = 1024;

  private static int OP_COUNT = 100000;
  
  /**
   * currently not being executed for congo but after transition to JDK 1.5, this test should be executed.
   *
   */
  public void _testPopulate1kbwrites()
  {
    try {
      final byte[] value = new byte[ENTRY_SIZE];
      Arrays.fill(value, (byte)77);
      for (int i = 0; i < OP_COUNT; i++) {
        region.put(new Integer(i), value);
      }
      closeDown(); // closes disk file which will flush all buffers
    }
    catch (Exception ex) {
      fail("IOException occured due to " + ex);
    }

  }
  /**
   * cleans all the directory of all the files present in them
   *
   */
  protected static void deleteFiles()
  {
    for (int i = 0; i < dirs.length; i++) {
      File[] files = dirs[i].listFiles();
      for (int j = 0; j < files.length; j++) {
        files[j].delete();
      }
    }
  }
  
  @Test
  public void testDoNothing(){
    //dummy method to ensure at least one test is present in this file if the other tests are commented
  }
  
  
}// end of Bug34179TooManyFilesOpenJUnitTest