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.worker.grpc;
  
  import static org.junit.Assert.assertTrue;
  
  import alluxio.AlluxioTestDirectory;
  import alluxio.AlluxioURI;
  import alluxio.ConfigurationRule;
  import alluxio.conf.Configuration;
  import alluxio.conf.PropertyKey;
  import alluxio.grpc.RequestType;
  import alluxio.grpc.WriteRequest;
  import alluxio.network.protocol.databuffer.DataBuffer;
  import alluxio.proto.dataserver.Protocol;
  import alluxio.underfs.UfsManager;
  import alluxio.underfs.UnderFileSystem;
  import alluxio.underfs.options.CreateOptions;
  import alluxio.util.CommonUtils;
  import alluxio.worker.block.BlockMasterClientPool;
  import alluxio.worker.block.BlockStore;
  import alluxio.worker.block.CreateBlockOptions;
  import alluxio.worker.block.DefaultBlockWorker;
  import alluxio.worker.block.MonoBlockStore;
  import alluxio.worker.block.TieredBlockStore;
  import alluxio.worker.block.io.BlockWriter;
  
  import io.grpc.Status;
  import io.grpc.stub.StreamObserver;
  import io.netty.buffer.ByteBuf;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.mockito.Mockito;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.HashMap;
  import java.util.concurrent.atomic.AtomicReference;
  
  public class UfsFallbackBlockWriteHandlerTest extends AbstractWriteHandlerTest {
    private static final long TEST_SESSION_ID = 123L;
    private static final long TEST_WORKER_ID = 456L;
    private static final int PARTIAL_WRITTEN = 512;
  
    private OutputStream mOutputStream;
    private BlockStore mBlockStore;
    /** The file used to hold the data written by the test. */
    private File mFile;
    private long mPartialChecksum;
  
    @Rule
    public ConfigurationRule mConfigurationRule =
        new ConfigurationRule(new HashMap<PropertyKey, Object>() {
          {
            put(PropertyKey.MASTER_MOUNT_TABLE_ROOT_UFS,
                AlluxioTestDirectory.createTemporaryDirectory(
                    "UfsFallbackBlockWriteHandlerTest-RootUfs")
                    .getAbsolutePath());
            put(PropertyKey.WORKER_TIERED_STORE_LEVEL0_DIRS_PATH, AlluxioTestDirectory
                .createTemporaryDirectory("UfsFallbackBlockWriteHandlerTest-WorkerDataFolder")
                .getAbsolutePath());
            put(PropertyKey.WORKER_TIERED_STORE_LEVELS, 1);
          }
        }, Configuration.modifiableGlobal());
  
    @Before
    public void before() throws Exception {
      mFile = mTestFolder.newFile();
      mOutputStream = new FileOutputStream(mFile);
      UfsManager ufsManager = Mockito.mock(UfsManager.class);
      AtomicReference<Long> workerId = new AtomicReference<>(-1L);
      mBlockStore =
          new MonoBlockStore(new TieredBlockStore(), Mockito.mock(BlockMasterClientPool.class),
              ufsManager, workerId);
      DefaultBlockWorker blockWorker = Mockito.mock(DefaultBlockWorker.class);
      Mockito.when(blockWorker.getWorkerId()).thenReturn(new AtomicReference<>(TEST_WORKER_ID));
      Mockito.when(blockWorker.getBlockStore()).thenReturn(mBlockStore);
      UnderFileSystem mockUfs = Mockito.mock(UnderFileSystem.class);
  
      UfsManager.UfsClient ufsClient = new UfsManager.UfsClient(() -> mockUfs, AlluxioURI.EMPTY_URI);
      Mockito.when(ufsManager.get(Mockito.anyLong())).thenReturn(ufsClient);
      Mockito.when(mockUfs.createNonexistingFile(Mockito.anyString(),
          Mockito.any(CreateOptions.class))).thenReturn(mOutputStream)
          .thenReturn(new FileOutputStream(mFile, true));
  
      mResponseObserver = Mockito.mock(StreamObserver.class);
      mWriteHandler = new UfsFallbackBlockWriteHandler(blockWorker, ufsManager, mResponseObserver,
          mUserInfo, false);
      setupResponseTrigger();
  
      // create a partial block in block store first
      mBlockStore.createBlock(TEST_SESSION_ID, TEST_BLOCK_ID, 0,
          new CreateBlockOptions(null, "MEM", CHUNK_SIZE));
      BlockWriter writer = mBlockStore.createBlockWriter(TEST_SESSION_ID, TEST_BLOCK_ID);
      DataBuffer buffer = newDataBuffer(PARTIAL_WRITTEN);
      mPartialChecksum = getChecksum(buffer);
      writer.append((ByteBuf) buffer.getNettyOutput());
      writer.close();
    }
  
    @After
    public void after() throws Exception {
      mOutputStream.close();
    }
  
    @Test
    public void noTempBlockFound() throws Exception {
      // remove the block partially created
      mBlockStore.abortBlock(TEST_SESSION_ID, TEST_BLOCK_ID);
      mWriteHandler.write(newFallbackInitRequest(PARTIAL_WRITTEN));
      waitForResponses();
      checkErrorCode(mResponseObserver, Status.Code.INTERNAL);
    }
  
    @Test
    public void tempBlockWritten() throws Exception {
      DataBuffer buffer = newDataBuffer(CHUNK_SIZE);
      long checksum = mPartialChecksum + getChecksum(buffer);
      mWriteHandler.write(newFallbackInitRequest(PARTIAL_WRITTEN));
      mWriteHandler.write(newWriteRequest(buffer));
      mWriteHandler.onCompleted();
      waitForResponses();
      checkComplete(mResponseObserver);
      checkWriteData(checksum, PARTIAL_WRITTEN + CHUNK_SIZE);
    }
  
    @Test
    public void getLocation() throws Exception {
      mWriteHandler.write(newFallbackInitRequest(0));
      CommonUtils.waitFor("location is not null", () -> !"null".equals(mWriteHandler.getLocation()));
      assertTrue(mWriteHandler.getLocation().startsWith("/.alluxio_ufs_blocks"));
    }
  
    protected WriteRequest newFallbackInitRequest(long bytesInBlockStore) {
      Protocol.CreateUfsBlockOptions createUfsBlockOptions =
          newWriteRequestCommand(0).getCommand().getCreateUfsBlockOptions().toBuilder()
              .setBytesInBlockStore(bytesInBlockStore)
              .build();
      return super.newWriteRequestCommand(0).toBuilder().setCommand(
          super.newWriteRequestCommand(0).getCommand().toBuilder()
          .setCreateUfsBlockOptions(createUfsBlockOptions)).build();
    }
  
    @Override
    protected WriteRequest newWriteRequestCommand(long offset) {
      Protocol.CreateUfsBlockOptions createUfsBlockOptions =
          Protocol.CreateUfsBlockOptions.newBuilder().setMountId(TEST_MOUNT_ID).setFallback(true)
              .build();
      return super.newWriteRequestCommand(offset).toBuilder().setCommand(
          super.newWriteRequestCommand(offset).getCommand().toBuilder()
          .setCreateUfsBlockOptions(createUfsBlockOptions)).build();
    }
  
    @Override
    protected RequestType getWriteRequestType() {
      return RequestType.UFS_FALLBACK_BLOCK;
    }
  
    @Override
    protected InputStream getWriteDataStream() throws IOException {
      return new FileInputStream(mFile);
    }
  }
  