content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.master.file.async;
  
  import static org.junit.Assert.assertEquals;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import alluxio.AlluxioURI;
  import alluxio.exception.FileDoesNotExistException;
  import alluxio.master.file.FileSystemMaster;
  import alluxio.master.file.meta.FileSystemMasterView;
  import alluxio.wire.BlockInfo;
  import alluxio.wire.BlockLocation;
  import alluxio.wire.FileBlockInfo;
  import alluxio.wire.FileInfo;
  import alluxio.wire.PersistFile;
  
  import com.google.common.collect.Lists;
  import org.junit.Before;
  import org.junit.Test;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Tests {@link DefaultAsyncPersistHandler}.
   */
  public class DefaultAsyncPersistHandlerTest {
    private FileSystemMaster mFileSystemMaster;
  
    @Before
    public void before() {
      mFileSystemMaster = mock(FileSystemMaster.class);
    }
  
    @Test
    public void scheduleAsyncPersist() throws Exception {
      DefaultAsyncPersistHandler handler =
          new DefaultAsyncPersistHandler(new FileSystemMasterView(mFileSystemMaster));
      AlluxioURI path = new AlluxioURI("/test");
      long blockId = 0;
      long workerId = 1;
      long fileId = 2;
      List<FileBlockInfo> blockInfoList = new ArrayList<>();
      BlockLocation location = new BlockLocation().setWorkerId(workerId);
      blockInfoList.add(new FileBlockInfo().setBlockInfo(
          new BlockInfo().setBlockId(blockId).setLocations(Lists.newArrayList(location))));
      when(mFileSystemMaster.getFileBlockInfoList(path)).thenReturn(blockInfoList);
      when(mFileSystemMaster.getFileId(path)).thenReturn(fileId);
      when(mFileSystemMaster.getPath(fileId)).thenReturn(path);
      when(mFileSystemMaster.getFileInfo(fileId))
          .thenReturn(new FileInfo().setLength(1).setCompleted(true));
  
      handler.scheduleAsyncPersistence(path);
      List<PersistFile> persistFiles = handler.pollFilesToPersist(workerId);
      assertEquals(1, persistFiles.size());
      assertEquals(Lists.newArrayList(blockId), persistFiles.get(0).getBlockIds());
    }
  
    /**
     * Tests the persistence of file with block on multiple workers.
     */
    @Test
    public void persistenceFileWithBlocksOnMultipleWorkers() throws Exception {
      DefaultAsyncPersistHandler handler =
          new DefaultAsyncPersistHandler(new FileSystemMasterView(mFileSystemMaster));
      AlluxioURI path = new AlluxioURI("/test");
      List<FileBlockInfo> blockInfoList = new ArrayList<>();
      BlockLocation location1 = new BlockLocation().setWorkerId(1);
      blockInfoList.add(new FileBlockInfo()
          .setBlockInfo(new BlockInfo().setLocations(Lists.newArrayList(location1))));
      BlockLocation location2 = new BlockLocation().setWorkerId(2);
      blockInfoList.add(new FileBlockInfo()
          .setBlockInfo(new BlockInfo().setLocations(Lists.newArrayList(location2))));
      long fileId = 2;
      when(mFileSystemMaster.getFileId(path)).thenReturn(fileId);
      when(mFileSystemMaster.getFileInfo(fileId))
          .thenReturn(new FileInfo().setLength(1).setCompleted(true));
      when(mFileSystemMaster.getFileBlockInfoList(path)).thenReturn(blockInfoList);
  
      // no persist scheduled on any worker
      assertEquals(0, handler.pollFilesToPersist(1).size());
      assertEquals(0, handler.pollFilesToPersist(2).size());
    }
  
    /**
     * Tests persistence after deletion of files.
     */
    @Test
    public void persistenceFileAfterDeletion() throws Exception {
      DefaultAsyncPersistHandler handler =
          new DefaultAsyncPersistHandler(new FileSystemMasterView(mFileSystemMaster));
      AlluxioURI path = new AlluxioURI("/test");
      long blockId = 0;
      long workerId = 1;
      long fileId = 2;
      List<FileBlockInfo> blockInfoList = new ArrayList<>();
      BlockLocation location = new BlockLocation().setWorkerId(workerId);
      blockInfoList.add(new FileBlockInfo().setBlockInfo(
          new BlockInfo().setBlockId(blockId).setLocations(Lists.newArrayList(location))));
      when(mFileSystemMaster.getFileBlockInfoList(path)).thenReturn(blockInfoList);
      when(mFileSystemMaster.getFileId(path)).thenReturn(fileId);
      when(mFileSystemMaster.getPath(fileId)).thenReturn(path);
      when(mFileSystemMaster.getFileInfo(fileId))
          .thenReturn(new FileInfo().setLength(1).setCompleted(true));
  
      handler.scheduleAsyncPersistence(path);
      when(mFileSystemMaster.getFileInfo(fileId))
          .thenThrow(new FileDoesNotExistException("no file"));
      List<PersistFile> persistFiles = handler.pollFilesToPersist(workerId);
      assertEquals(0, persistFiles.size());
    }
  }
  