Example usage for io.netty.channel FileRegion transfered

Introduction

In this page you can find the example usage for io.netty.channel FileRegion transfered.

Prototype

@Deprecated
long transfered();

Source Link

Document

Returns the bytes which was transferred already.

Usage

From source file:org.apache.rocketmq.remoting.netty.FileRegionEncoder.java

License:Apache License

/**
 * Encode a message into a {@link io.netty.buffer.ByteBuf}. This method will be called for each written message that
 * can be handled by this encoder./*from   ww  w .j  a  v a2s. c  o m*/
 *
 * @param ctx the {@link io.netty.channel.ChannelHandlerContext} which this {@link
 * io.netty.handler.codec.MessageToByteEncoder} belongs to
 * @param msg the message to encode
 * @param out the {@link io.netty.buffer.ByteBuf} into which the encoded message will be written
 * @throws Exception is thrown if an error occurs
 */
@Override
protected void encode(ChannelHandlerContext ctx, FileRegion msg, final ByteBuf out) throws Exception {
    WritableByteChannel writableByteChannel = new WritableByteChannel() {
        @Override
        public int write(ByteBuffer src) throws IOException {
            out.writeBytes(src);
            return out.capacity();
        }

        @Override
        public boolean isOpen() {
            return true;
        }

        @Override
        public void close() throws IOException {
        }
    };

    long toTransfer = msg.count();

    while (true) {
        long transferred = msg.transfered();
        if (toTransfer - transferred <= 0) {
            break;
        }
        msg.transferTo(writableByteChannel, transferred);
    }
}

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From source file:org.apache.rocketmq.remoting.netty.FileRegionEncoderTest.java

License:Apache License

/**
 * This unit test case ensures that {@link FileRegionEncoder} indeed wraps {@link FileRegion} to
 * {@link ByteBuf}.//  w  ww .  ja va2  s.  c o  m
 * @throws IOException if there is an error.
 */
@Test
public void testEncode() throws IOException {
    FileRegionEncoder fileRegionEncoder = new FileRegionEncoder();
    EmbeddedChannel channel = new EmbeddedChannel(fileRegionEncoder);
    File file = File.createTempFile(UUID.randomUUID().toString(), ".data");
    file.deleteOnExit();
    Random random = new Random(System.currentTimeMillis());
    int dataLength = 1 << 10;
    byte[] data = new byte[dataLength];
    random.nextBytes(data);
    write(file, data);
    FileRegion fileRegion = new DefaultFileRegion(file, 0, dataLength);
    Assert.assertEquals(0, fileRegion.transfered());
    Assert.assertEquals(dataLength, fileRegion.count());
    Assert.assertTrue(channel.writeOutbound(fileRegion));
    ByteBuf out = (ByteBuf) channel.readOutbound();
    byte[] arr = new byte[out.readableBytes()];
    out.getBytes(0, arr);
    Assert.assertArrayEquals("Data should be identical", data, arr);
}

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From source file:org.opendaylight.tcpmd5.netty.MD5NioSocketChannel.java

License:Open Source License

@Override
protected long doWriteFileRegion(final FileRegion region) throws IOException {
    return region.transferTo(javaChannel(), region.transfered());
}

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