Package org.jboss.netty.channel

Examples of org.jboss.netty.channel.FileRegion

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    ChannelFuture writeFuture;
    try {
      FileChannel fc = new RandomAccessFile(file, "r").getChannel();

      final FileRegion region = new DefaultFileRegion(fc, 0, file.length());
      writeFuture = channel.write(region);
      writeFuture.addListener(new ChannelFutureProgressListener() {
        public void operationComplete(ChannelFuture future) {
          region.releaseExternalResources();
          if (!keepAlive) {
            channel.close();
          }
        }
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        spill = new RandomAccessFile(spillfile, "r");
      } catch (FileNotFoundException e) {
        LOG.info(spillfile + " not found");
        return null;
      }
      final FileRegion partition = new DefaultFileRegion(
          spill.getChannel(), info.startOffset, info.partLength);
      ChannelFuture 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();
          }
        });
      metrics.shuffleConnections.incr();
      metrics.shuffleOutputBytes.incr(info.partLength); // optimistic
      return writeFuture;
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    ChannelFuture writeFuture;
    try {
      FileChannel fc = new RandomAccessFile(file, "r").getChannel();

      final FileRegion region = new DefaultFileRegion(fc, 0, file.length());
      writeFuture = channel.write(region);
      writeFuture.addListener(new ChannelFutureProgressListener() {
        public void operationComplete(ChannelFuture future) {
          region.releaseExternalResources();
          if (!keepalive) {
            channel.close();
          }
        }
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            int length = 0;

            // Add support to write a FileRegion. This in fact will not give any performance gain but at least it not fail and
            // we did the best to emulate it
            if (message instanceof FileRegion) {
                FileRegion fr = (FileRegion) message;
                try {
                    synchronized (out) {
                        WritableByteChannel  bchannel = Channels.newChannel(out);
                       
                        long i = 0;
                        while ((i = fr.transferTo(bchannel, length)) > 0) {
                            length += i;
                            if (length >= fr.getCount()) {
                                break;
                            }
                        }
                    }
                } finally {
                    if (fr instanceof DefaultFileRegion) {
                        if (((DefaultFileRegion) fr).releaseAfterTransfer()) {
                            fr.releaseExternalResources();
                        }
                    }

                }
            } else {
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            int length = 0;

            // Add support to write a FileRegion. This in fact will not give any performance gain but at least it not fail and
            // we did the best to emulate it
            if (message instanceof FileRegion) {
                FileRegion fr = (FileRegion) message;
                try {
                    synchronized (out) {
                        WritableByteChannel  bchannel = Channels.newChannel(out);
                       
                        long i = 0;
                        while ((i = fr.transferTo(bchannel, length)) > 0) {
                            length += i;
                            if (length >= fr.getCount()) {
                                break;
                            }
                        }
                    }
                } finally {
                    if (fr instanceof DefaultFileRegion) {
                        if (((DefaultFileRegion) fr).releaseAfterTransfer()) {
                            fr.releaseExternalResources();
                        }
                    }

                }
            } else {
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            int length = 0;

            // Add support to write a FileRegion. This in fact will not give any performance gain
            // but at least it not fail and we did the best to emulate it
            if (message instanceof FileRegion) {
                FileRegion fr = (FileRegion) message;
                try {
                    synchronized (out) {
                        WritableByteChannel  bchannel = Channels.newChannel(out);

                        long i;
                        while ((i = fr.transferTo(bchannel, length)) > 0) {
                            length += i;
                            if (length >= fr.getCount()) {
                                break;
                            }
                        }
                    }
                } finally {
                    if (fr instanceof DefaultFileRegion) {
                        DefaultFileRegion dfr = (DefaultFileRegion) fr;
                        if (dfr.releaseAfterTransfer()) {
                            fr.releaseExternalResources();
                        }
                    }
                }
            } else {
                ChannelBuffer a = (ChannelBuffer) message;
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        if (ch.getPipeline().get(SslHandler.class) != null) {
            // Cannot use zero-copy with HTTPS.
            writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
        } else {
            // No encryption - use zero-copy.
            final FileRegion region =
                new DefaultFileRegion(raf.getChannel(), 0, fileLength);
            writeFuture = ch.write(region);
            writeFuture.addListener(new ChannelFutureProgressListener() {
                public void operationComplete(ChannelFuture future) {
                    region.releaseExternalResources();
                }

                public void operationProgressed(
                        ChannelFuture future, long amount, long current, long total) {
                    System.out.printf("%s: %d / %d (+%d)%n", path, current, total, amount);
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    ChannelFuture writeFuture;
    try {
      FileChannel fc = new RandomAccessFile(file, "r").getChannel();

      final FileRegion region = new DefaultFileRegion(fc, 0, file.length());
      writeFuture = channel.write(region);
      writeFuture.addListener(new ChannelFutureProgressListener() {
        public void operationComplete(ChannelFuture future) {
          region.releaseExternalResources();
          if (!keepalive) {
            channel.close();
          }
        }
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          "sendMapOutput: Couldn't get mapId = " + mapId + ", reduce " +
              reduce);
      return writeFuture;
    }

    final FileRegion partition = new DefaultFileRegion(
      spill.getChannel(), info.startOffset, info.partLength);
    writeFuture = ch.write(partition);
    writeFuture.addListener(new ChanneFutureListenerMetrics(partition));
    shuffleMetrics.outputBytes(info.partLength); // optimistic
    LOG.info("Sending out " + info.partLength + " bytes for reduce: " +
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        if (ch.getPipeline().get(SslHandler.class) != null) {
            // Cannot use zero-copy with HTTPS.
            writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
        } else {
            // No encryption - use zero-copy.
            final FileRegion region =
                new DefaultFileRegion(raf.getChannel(), 0, fileLength);
            writeFuture = ch.write(region);
            writeFuture.addListener(new ChannelFutureProgressListener() {
                public void operationComplete(ChannelFuture future) {
                    region.releaseExternalResources();
                }

                public void operationProgressed(
                        ChannelFuture future, long amount, long current, long total) {
                    System.out.printf("%s: %d / %d (+%d)%n", path, current, total, amount);
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