private ChannelFuture sendFile(ChannelHandlerContext ctx, Channel ch, FileChunk file)
      throws IOException {
    RandomAccessFile raf;
    try {
      raf = new RandomAccessFile(file.getFile(), "r");
    } catch (FileNotFoundException fnfe) {
      return null;
    }

    ChannelFuture writeFuture;
    if (ch.getPipeline().get(SslHandler.class) != null) {
      // Cannot use zero-copy with HTTPS.
      writeFuture = ch.write(new ChunkedFile(raf, file.startOffset(), file.length(), 8192));
    } else {
      // No encryption - use zero-copy.
      final FileRegion region =
          new DefaultFileRegion(raf.getChannel(), file.startOffset(), file.length());
      writeFuture = ch.write(region);
      writeFuture.addListener(
          new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) {
              region.releaseExternalResources();
            }
          });
    }

    return writeFuture;
  }
Пример #2
0
  public FileChunk get() throws IOException {
    if (useLocalFile) {
      startTime = System.currentTimeMillis();
      finishTime = System.currentTimeMillis();
      state = TajoProtos.FetcherState.FETCH_FINISHED;
      return fileChunk;
    }

    this.startTime = System.currentTimeMillis();
    this.state = TajoProtos.FetcherState.FETCH_FETCHING;
    ChannelFuture future = null;
    try {
      future =
          bootstrap
              .clone()
              .connect(new InetSocketAddress(host, port))
              .addListener(ChannelFutureListener.CLOSE_ON_FAILURE);

      // Wait until the connection attempt succeeds or fails.
      Channel channel = future.awaitUninterruptibly().channel();
      if (!future.isSuccess()) {
        state = TajoProtos.FetcherState.FETCH_FAILED;
        throw new IOException(future.cause());
      }

      String query = uri.getPath() + (uri.getRawQuery() != null ? "?" + uri.getRawQuery() : "");
      // Prepare the HTTP request.
      HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, query);
      request.headers().set(HttpHeaders.Names.HOST, host);
      request.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.CLOSE);
      request.headers().set(HttpHeaders.Names.ACCEPT_ENCODING, HttpHeaders.Values.GZIP);

      LOG.info("Status: " + getState() + ", URI:" + uri);
      // Send the HTTP request.
      channel.writeAndFlush(request);

      // Wait for the server to close the connection. throw exception if failed
      channel.closeFuture().syncUninterruptibly();

      fileChunk.setLength(fileChunk.getFile().length());
      return fileChunk;
    } finally {
      if (future != null && future.channel().isOpen()) {
        // Close the channel to exit.
        future.channel().close().awaitUninterruptibly();
      }

      this.finishTime = System.currentTimeMillis();
      LOG.info(
          "Fetcher finished:" + (finishTime - startTime) + " ms, " + getState() + ", URI:" + uri);
    }
  }
 private ChannelFuture sendFile(ChannelHandlerContext ctx, Channel ch, FileChunk file)
     throws IOException {
   RandomAccessFile spill;
   try {
     spill = new RandomAccessFile(file.getFile(), "r");
   } catch (FileNotFoundException e) {
     LOG.info(file.getFile() + " not found");
     return null;
   }
   ChannelFuture writeFuture;
   if (ch.getPipeline().get(SslHandler.class) == null) {
     final FadvisedFileRegion partition =
         new FadvisedFileRegion(
             spill,
             file.startOffset,
             file.length(),
             manageOsCache,
             readaheadLength,
             readaheadPool,
             file.getFile().getAbsolutePath());
     writeFuture = ch.write(partition);
     writeFuture.addListener(
         new ChannelFutureListener() {
           // TODO error handling; distinguish IO/connection failures,
           //      attribute to appropriate spill output
           @Override
           public void operationComplete(ChannelFuture future) {
             partition.releaseExternalResources();
           }
         });
   } else {
     // HTTPS cannot be done with zero copy.
     final FadvisedChunkedFile chunk =
         new FadvisedChunkedFile(
             spill,
             file.startOffset,
             file.length,
             sslFileBufferSize,
             manageOsCache,
             readaheadLength,
             readaheadPool,
             file.getFile().getAbsolutePath());
     writeFuture = ch.write(chunk);
   }
   metrics.shuffleConnections.incr();
   metrics.shuffleOutputBytes.incr(file.length); // optimistic
   return writeFuture;
 }
Пример #4
0
  public Fetcher(TajoConf conf, URI uri, FileChunk chunk) {
    this.uri = uri;
    this.fileChunk = chunk;
    this.useLocalFile = !chunk.fromRemote();
    this.state = TajoProtos.FetcherState.FETCH_INIT;
    this.conf = conf;

    String scheme = uri.getScheme() == null ? "http" : uri.getScheme();
    this.host = uri.getHost() == null ? "localhost" : uri.getHost();
    this.port = uri.getPort();
    if (port == -1) {
      if (scheme.equalsIgnoreCase("http")) {
        this.port = 80;
      } else if (scheme.equalsIgnoreCase("https")) {
        this.port = 443;
      }
    }

    if (!useLocalFile) {
      bootstrap =
          new Bootstrap()
              .group(
                  NettyUtils.getSharedEventLoopGroup(
                      NettyUtils.GROUP.FETCHER,
                      conf.getIntVar(TajoConf.ConfVars.SHUFFLE_RPC_CLIENT_WORKER_THREAD_NUM)))
              .channel(NioSocketChannel.class)
              .option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
              .option(
                  ChannelOption.CONNECT_TIMEOUT_MILLIS,
                  conf.getIntVar(TajoConf.ConfVars.SHUFFLE_FETCHER_CONNECT_TIMEOUT) * 1000)
              .option(ChannelOption.SO_RCVBUF, 1048576) // set 1M
              .option(ChannelOption.TCP_NODELAY, true);

      ChannelInitializer<Channel> initializer =
          new HttpClientChannelInitializer(fileChunk.getFile());
      bootstrap.handler(initializer);
    }
  }
    @Override
    public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {

      HttpRequest request = (HttpRequest) e.getMessage();
      if (request.getMethod() != GET) {
        sendError(ctx, METHOD_NOT_ALLOWED);
        return;
      }

      // Parsing the URL into key-values
      final Map<String, List<String>> params =
          new QueryStringDecoder(request.getUri()).getParameters();
      final List<String> types = params.get("type");
      final List<String> taskIdList = params.get("ta");
      final List<String> subQueryIds = params.get("sid");
      final List<String> partitionIds = params.get("p");

      if (types == null || taskIdList == null || subQueryIds == null || partitionIds == null) {
        sendError(ctx, "Required type, taskIds, subquery Id, and partition id", BAD_REQUEST);
        return;
      }

      if (types.size() != 1 || subQueryIds.size() != 1) {
        sendError(ctx, "Required type, taskIds, subquery Id, and partition id", BAD_REQUEST);
        return;
      }

      final List<FileChunk> chunks = Lists.newArrayList();

      String repartitionType = types.get(0);
      String sid = subQueryIds.get(0);
      String partitionId = partitionIds.get(0);
      List<String> taskIds = splitMaps(taskIdList);

      // the working dir of tajo worker for each query
      String queryBaseDir = queryId + "/output" + "/";

      LOG.info(
          "PullServer request param: repartitionType="
              + repartitionType
              + ", sid="
              + sid
              + ", partitionId="
              + partitionId
              + ", taskIds="
              + taskIdList);

      String taskLocalDir = conf.get(ConfVars.WORKER_TEMPORAL_DIR.varname);
      if (taskLocalDir == null || taskLocalDir.equals("")) {
        LOG.error("Tajo local directory should be specified.");
      }
      LOG.info("PullServer baseDir: " + taskLocalDir + "/" + queryBaseDir);

      // if a subquery requires a range partitioning
      if (repartitionType.equals("r")) {
        String ta = taskIds.get(0);
        Path path =
            localFS.makeQualified(
                lDirAlloc.getLocalPathToRead(
                    queryBaseDir + "/" + sid + "/" + ta + "/output/", conf));

        String startKey = params.get("start").get(0);
        String endKey = params.get("end").get(0);
        boolean last = params.get("final") != null;

        FileChunk chunk;
        try {
          chunk = getFileCunks(path, startKey, endKey, last);
        } catch (Throwable t) {
          LOG.error("ERROR Request: " + request.getUri(), t);
          sendError(ctx, "Cannot get file chunks to be sent", BAD_REQUEST);
          return;
        }
        if (chunk != null) {
          chunks.add(chunk);
        }

        // if a subquery requires a hash repartition
      } else if (repartitionType.equals("h")) {
        for (String ta : taskIds) {
          Path path =
              localFS.makeQualified(
                  lDirAlloc.getLocalPathToRead(
                      queryBaseDir + "/" + sid + "/" + ta + "/output/" + partitionId, conf));
          File file = new File(path.toUri());
          FileChunk chunk = new FileChunk(file, 0, file.length());
          chunks.add(chunk);
        }
      } else {
        LOG.error("Unknown repartition type: " + repartitionType);
        return;
      }

      // Write the content.
      Channel ch = e.getChannel();
      if (chunks.size() == 0) {
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, NO_CONTENT);
        ch.write(response);
        if (!isKeepAlive(request)) {
          ch.close();
        }
      } else {
        FileChunk[] file = chunks.toArray(new FileChunk[chunks.size()]);
        HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
        long totalSize = 0;
        for (FileChunk chunk : file) {
          totalSize += chunk.length();
        }
        setContentLength(response, totalSize);

        // Write the initial line and the header.
        ch.write(response);

        ChannelFuture writeFuture = null;

        for (FileChunk chunk : file) {
          writeFuture = sendFile(ctx, ch, chunk);
          if (writeFuture == null) {
            sendError(ctx, NOT_FOUND);
            return;
          }
        }

        // Decide whether to close the connection or not.
        if (!isKeepAlive(request)) {
          // Close the connection when the whole content is written out.
          writeFuture.addListener(ChannelFutureListener.CLOSE);
        }
      }
    }
  @Override
  public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
    HttpRequest request = (HttpRequest) e.getMessage();
    if (request.getMethod() != GET) {
      sendError(ctx, METHOD_NOT_ALLOWED);
      return;
    }

    String base =
        ContainerLocalizer.USERCACHE
            + "/"
            + userName
            + "/"
            + ContainerLocalizer.APPCACHE
            + "/"
            + appId
            + "/output"
            + "/";

    final Map<String, List<String>> params =
        new QueryStringDecoder(request.getUri()).getParameters();

    List<FileChunk> chunks = Lists.newArrayList();
    List<String> taskIds = splitMaps(params.get("ta"));
    int sid = Integer.valueOf(params.get("sid").get(0));
    int partitionId = Integer.valueOf(params.get("p").get(0));
    for (String ta : taskIds) {

      File file = new File(base + "/" + sid + "/" + ta + "/output/" + partitionId);
      FileChunk chunk = new FileChunk(file, 0, file.length());
      chunks.add(chunk);
    }

    FileChunk[] file = chunks.toArray(new FileChunk[chunks.size()]);
    //    try {
    //      file = retriever.handle(ctx, request);
    //    } catch (FileNotFoundException fnf) {
    //      LOG.error(fnf);
    //      sendError(ctx, NOT_FOUND);
    //      return;
    //    } catch (IllegalArgumentException iae) {
    //      LOG.error(iae);
    //      sendError(ctx, BAD_REQUEST);
    //      return;
    //    } catch (FileAccessForbiddenException fafe) {
    //      LOG.error(fafe);
    //      sendError(ctx, FORBIDDEN);
    //      return;
    //    } catch (IOException ioe) {
    //      LOG.error(ioe);
    //      sendError(ctx, INTERNAL_SERVER_ERROR);
    //      return;
    //    }

    // Write the content.
    Channel ch = e.getChannel();
    if (file == null) {
      HttpResponse response = new DefaultHttpResponse(HTTP_1_1, NO_CONTENT);
      ch.write(response);
      if (!isKeepAlive(request)) {
        ch.close();
      }
    } else {
      HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
      long totalSize = 0;
      for (FileChunk chunk : file) {
        totalSize += chunk.length();
      }
      setContentLength(response, totalSize);

      // Write the initial line and the header.
      ch.write(response);

      ChannelFuture writeFuture = null;

      for (FileChunk chunk : file) {
        writeFuture = sendFile(ctx, ch, chunk);
        if (writeFuture == null) {
          sendError(ctx, NOT_FOUND);
          return;
        }
      }

      // Decide whether to close the connection or not.
      if (!isKeepAlive(request)) {
        // Close the connection when the whole content is written out.
        writeFuture.addListener(ChannelFutureListener.CLOSE);
      }
    }
  }