How to use

org.neo4j.kernel.internal.locker.GlobalStoreLocker

constructor

private StoreLockChecker( FileSystemAbstraction fileSystem, StoreLayout storeLayout )
{
  this.fileSystem = fileSystem;
  this.storeLocker = new GlobalStoreLocker( fileSystem, storeLayout );
}

protected StoreLocker createStoreLocker()
{
  return new GlobalStoreLocker( fileSystem, storeLayout );
}

private StoreLocker tryLockStore( FileSystemAbstraction fileSystem )
{
  StoreLocker storeLocker = new GlobalStoreLocker( fileSystem, this.databaseLayout.getStoreLayout() );
  try
  {
    storeLocker.checkLock();
  }
  catch ( Exception e )
  {
    try
    {
      storeLocker.close();
    }
    catch ( IOException ce )
    {
      e.addSuppressed( ce );
    }
    throw e;
  }
  return storeLocker;
}

public static void checkLock( StoreLayout storeLayout ) throws CommandFailed
{
  try ( FileSystemAbstraction fileSystem = new DefaultFileSystemAbstraction();
      StoreLocker storeLocker = new GlobalStoreLocker( fileSystem, storeLayout ) )
  {
    storeLocker.checkLock();
  }
  catch ( StoreLockException e )
  {
    throw new CommandFailed( "the database is in use -- stop Neo4j and try again", e );
  }
  catch ( IOException e )
  {
    wrapIOException( e );
  }
}

@Test
public void allowToLockSameDirectoryIfItWasUnlocked() throws IOException
{
  StoreLayout storeLayout = testDirectory.storeLayout();
  try ( GlobalStoreLocker storeLocker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
  {
    storeLocker.checkLock();
  }
  try ( GlobalStoreLocker storeLocker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
  {
    storeLocker.checkLock();
  }
}

@Test
public void failToLockSameFolderAcrossIndependentLockers() throws Exception
{
  StoreLayout storeLayout = testDirectory.storeLayout();
  try ( GlobalStoreLocker storeLocker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
  {
    storeLocker.checkLock();
    try ( GlobalStoreLocker locker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
    {
      locker.checkLock();
      fail("directory should be locked");
    }
    catch ( StoreLockException expected )
    {
      // expected
    }
    try ( GlobalStoreLocker locker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
    {
      locker.checkLock();
      fail("directory should be locked");
    }
    catch ( StoreLockException expected )
    {
      // expected
    }
  }
}

  @Test
  public void allowMultipleCallstoActuallyStoreLocker() throws IOException
  {
    StoreLayout storeLayout = testDirectory.storeLayout();
    try ( GlobalStoreLocker storeLocker = new GlobalStoreLocker( fileSystemRule.get(), storeLayout ) )
    {
      storeLocker.checkLock();
      storeLocker.checkLock();
      storeLocker.checkLock();
      storeLocker.checkLock();
      storeLocker.checkLock();
    }
  }
}

private StoreLockChecker( FileSystemAbstraction fileSystem, StoreLayout storeLayout )
{
  this.fileSystem = fileSystem;
  this.storeLocker = new GlobalStoreLocker( fileSystem, storeLayout );
}

protected StoreLocker createStoreLocker()
{
  return new GlobalStoreLocker( fileSystem, storeLayout );
}

private StoreLocker tryLockStore( FileSystemAbstraction fileSystem )
{
  StoreLocker storeLocker = new GlobalStoreLocker( fileSystem, this.databaseLayout.getStoreLayout() );
  try
  {
    storeLocker.checkLock();
  }
  catch ( Exception e )
  {
    try
    {
      storeLocker.close();
    }
    catch ( IOException ce )
    {
      e.addSuppressed( ce );
    }
    throw e;
  }
  return storeLocker;
}