Example usage for io.netty.buffer ByteBuf readerIndex

List of usage examples for io.netty.buffer ByteBuf readerIndex

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Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf readerIndex.

Prototype

public abstract int readerIndex();

Source Link

Document

Returns the readerIndex of this buffer.

Usage

From source file:com.scurrilous.circe.checksum.Crc32cIntChecksum.java

License:Apache License

/**
 * Computes crc32c checksum: if it is able to load crc32c native library then it computes using that native library
 * which is faster as it computes using hardware machine instruction else it computes using crc32c algo.
 *
 * @param payload/* w  w w. j a  va  2  s.  c o  m*/
 * @return
 */
public static int computeChecksum(ByteBuf payload) {
    if (payload.hasMemoryAddress() && (CRC32C_HASH instanceof Sse42Crc32C)) {
        return CRC32C_HASH.calculate(payload.memoryAddress() + payload.readerIndex(), payload.readableBytes());
    } else if (payload.hasArray()) {
        return CRC32C_HASH.calculate(payload.array(), payload.arrayOffset() + payload.readerIndex(),
                payload.readableBytes());
    } else {
        return CRC32C_HASH.calculate(payload.nioBuffer());
    }
}

From source file:com.scurrilous.circe.checksum.Crc32cIntChecksum.java

License:Apache License

/**
 * Computes incremental checksum with input previousChecksum and input payload
 *
 * @param previousChecksum : previously computed checksum
 * @param payload//from  ww w .j  a v  a 2 s  .c o  m
 * @return
 */
public static int resumeChecksum(int previousChecksum, ByteBuf payload) {
    if (payload.hasMemoryAddress() && (CRC32C_HASH instanceof Sse42Crc32C)) {
        return CRC32C_HASH.resume(previousChecksum, payload.memoryAddress() + payload.readerIndex(),
                payload.readableBytes());
    } else if (payload.hasArray()) {
        return CRC32C_HASH.resume(previousChecksum, payload.array(),
                payload.arrayOffset() + payload.readerIndex(), payload.readableBytes());
    } else {
        return CRC32C_HASH.resume(previousChecksum, payload.nioBuffer());
    }
}

From source file:com.scurrilous.circe.checksum.Crc32cLongChecksum.java

License:Apache License

/**
 * Computes crc32c checksum: if it is able to load crc32c native library then it computes using that native library
 * which is faster as it computes using hardware machine instruction else it computes using crc32c algo.
 *
 * @param payload//from  w  w w  .j  a  v  a2 s  . c o m
 * @return
 */
public static long computeChecksum(ByteBuf payload) {
    int crc;
    if (payload.hasMemoryAddress() && (CRC32C_HASH instanceof Sse42Crc32C)) {
        crc = CRC32C_HASH.calculate(payload.memoryAddress() + payload.readerIndex(), payload.readableBytes());
    } else if (payload.hasArray()) {
        crc = CRC32C_HASH.calculate(payload.array(), payload.arrayOffset() + payload.readerIndex(),
                payload.readableBytes());
    } else {
        crc = CRC32C_HASH.calculate(payload.nioBuffer());
    }
    return crc & 0xffffffffL;
}

From source file:com.scurrilous.circe.checksum.Crc32cLongChecksum.java

License:Apache License

/**
 * Computes incremental checksum with input previousChecksum and input payload
 *
 * @param previousChecksum : previously computed checksum
 * @param payload/* ww w  . ja  v a2  s .c o  m*/
 * @return
 */
public static long resumeChecksum(long previousChecksum, ByteBuf payload) {
    int crc = (int) previousChecksum;
    if (payload.hasMemoryAddress() && (CRC32C_HASH instanceof Sse42Crc32C)) {
        crc = CRC32C_HASH.resume(crc, payload.memoryAddress() + payload.readerIndex(), payload.readableBytes());
    } else if (payload.hasArray()) {
        crc = CRC32C_HASH.resume(crc, payload.array(), payload.arrayOffset() + payload.readerIndex(),
                payload.readableBytes());
    } else {
        crc = CRC32C_HASH.resume(crc, payload.nioBuffer());
    }
    return crc & 0xffffffffL;
}

From source file:com.shelf.messagepack.MessagePackFrameDecoder.java

License:Apache License

public long decodeLength(ByteBuf in, int offset) throws Exception {
    if (discardingTooLongFrame) {
        long bytesToDiscard = this.bytesToDiscard;
        int localBytesToDiscard = (int) Math.min(bytesToDiscard, in.readableBytes());
        in.skipBytes(localBytesToDiscard);
        bytesToDiscard -= localBytesToDiscard;
        this.bytesToDiscard = bytesToDiscard;

        failIfNecessary(false);/*  w w  w. j ava2s .c  om*/
    }

    int readerIndex = in.readerIndex() + offset;
    short b = in.getUnsignedByte(readerIndex);
    int ubyte = b & 0xff;

    LOGGER.trace("message: " + toHex(ubyte));

    switch (ubyte) {
    case NIL:
        return 1L;
    case FALSE:
        return 1L;
    case TRUE:
        return 1L;
    case BIN8: {
        short length = in.getUnsignedByte(readerIndex + 1);
        return 2L + length;
    }
    case BIN16: {
        int length = in.getUnsignedShort(readerIndex + 1);
        return 3L + length;
    }
    case BIN32: {
        long length = in.getUnsignedInt(readerIndex + 1);
        return 5L + length;
    }
    case EXT8: {
        short length = in.getUnsignedByte(readerIndex + 1);
        return 3L + length;
    }
    case EXT16: {
        int length = in.getUnsignedShort(readerIndex + 1);
        return 4L + length;
    }
    case EXT32: {
        long length = in.getUnsignedInt(readerIndex + 1);
        return 6L + length;
    }

    case FLOAT32:
        return 5L;
    case FLOAT64:
        return 9L;
    case UINT8:
        return 2L;
    case UINT16:
        return 3L;
    case UINT32:
        return 5L;
    case UINT64:
        return 9L;
    case INT8:
        return 2L;
    case INT16:
        return 3L;
    case INT32:
        return 5L;
    case INT64:
        return 9L;
    case FIXEXT1:
        return 3L;
    case FIXEXT2:
        return 4L;
    case FIXEXT4:
        return 6L;
    case FIXEXT8:
        return 10L;
    case FIXEXT16:
        return 18L;
    case STR8: {
        short length = in.getUnsignedByte(readerIndex + 1);
        return 2L + length;
    }
    case STR16: {
        int length = in.getUnsignedShort(readerIndex + 1);
        return 3L + length;
    }
    case STR32: {
        long length = in.getUnsignedInt(readerIndex + 1);
        return 5L + length;
    }
    case ARRAY16: {
        int elemCount = in.getUnsignedShort(readerIndex + 1);
        return getArraySize(in, 3, offset, elemCount);
    }
    case ARRAY32: {
        long elemCount = in.getUnsignedInt(readerIndex + 1);
        return getArraySize(in, 5, offset, elemCount);
    }
    case MAP16: {
        int elemCount = in.getUnsignedShort(readerIndex + 1);
        return getArraySize(in, 3, offset, elemCount * 2);
    }
    case MAP32: {
        long elemCount = in.getUnsignedInt(readerIndex + 1);
        return getArraySize(in, 5, offset, elemCount * 2);
    }
    default:
        if ((ubyte >> 7) == 0) { //positive fixint
            return 1L;
        } else if ((ubyte >> 4) == 0b1000) { //fixmap
            int elemCount = ubyte & 0b00001111;
            return getArraySize(in, 1, offset, elemCount * 2);
        } else if ((ubyte >> 4) == 0b1001) { //fixarray
            int elemCount = ubyte & 0b00001111;
            return getArraySize(in, 1, offset, elemCount);
        } else if ((ubyte >> 5) == 0b101) { //fixstr
            int length = ubyte & 0b00011111;
            return 1L + length;
        } else if ((ubyte >> 5) == 0b111) { //negative fixint
            return 1L;
        } else {
            throw new CorruptedFrameException("Unknown header byte of message: " + toHex(ubyte));
        }
    }
}

From source file:com.shelf.messagepack.MessagePackFrameDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    long frameLength = decodeLength(in, 0);
    if (frameLength > maxFrameLength) {
        long discard = frameLength - in.readableBytes();
        tooLongFrameLength = frameLength;

        if (discard < 0) {
            // buffer contains more bytes then the frameLength so we can discard all now
            in.skipBytes((int) frameLength);
        } else {//from   w  w  w .  ja v  a  2 s.  co m
            // Enter the discard mode and discard everything received so far.
            discardingTooLongFrame = true;
            bytesToDiscard = discard;
            in.skipBytes(in.readableBytes());
        }
        failIfNecessary(true);
    } else {
        int readerIndex = in.readerIndex();
        int actualFrameLength = (int) frameLength;
        ByteBuf buffer = extractFrame(ctx, in, readerIndex, actualFrameLength);
        in.readerIndex(readerIndex + actualFrameLength);
        out.add(buffer);
    }
}

From source file:com.spotify.folsom.client.binary.RequestTestTemplate.java

License:Apache License

protected void assertEOM(final ByteBuf b) {
    assertEquals(b.readerIndex(), b.writerIndex());
}

From source file:com.spotify.netty.handler.codec.zmtp.ZMTPUtils.java

License:Apache License

/**
 * Create a string from binary data, keeping printable ascii and hex encoding everything else.
 *
 * @param data The data//from   www  . ja  v a  2 s . c  o  m
 * @return A string representation of the data
 */
public static String toString(final ByteBuf data) {
    if (data == null) {
        return null;
    }
    final StringBuilder sb = new StringBuilder();
    for (int i = data.readerIndex(); i < data.writerIndex(); i++) {
        final byte b = data.getByte(i);
        if (b > 31 && b < 127) {
            if (b == '%') {
                sb.append('%');
            }
            sb.append((char) b);
        } else {
            sb.append('%');
            sb.append(String.format("%02X", b));
        }
    }
    return sb.toString();
}

From source file:com.spotify.netty4.handler.codec.zmtp.benchmarks.CustomReqRepBenchmark.java

License:Apache License

private static boolean asciiEquals(final AsciiString s, final ByteBuf data, final int size) {
    final int ix = data.readerIndex();
    if (size != s.length()) {
        return false;
    }//from w  ww  .  ja va2  s. c  o  m
    for (int i = 0; i < size; i++) {
        char c = (char) data.getByte(ix + i);
        if (c != s.charAt(i)) {
            return false;
        }
    }
    return true;
}

From source file:com.spotify.netty4.handler.codec.zmtp.ZMTPFramingDecoder.java

License:Apache License

@Override
protected void decode(final ChannelHandlerContext ctx, final ByteBuf in, final List<Object> out)
        throws ZMTPParsingException {
    while (in.isReadable()) {
        if (!headerParsed) {
            final int mark = in.readerIndex();
            headerParsed = header.read(in);
            if (!headerParsed) {
                // Wait for more data
                in.readerIndex(mark);//ww  w . j  a  v  a 2  s .  co m
                return;
            }
            decoder.header(ctx, header.length(), header.more(), out);
            remaining = header.length();
        }

        final int writerMark = in.writerIndex();
        final int n = (int) min(remaining, in.readableBytes());
        final int readerMark = in.readerIndex();
        in.writerIndex(readerMark + n);
        decoder.content(ctx, in, out);
        in.writerIndex(writerMark);
        final int read = in.readerIndex() - readerMark;
        remaining -= read;
        if (remaining > 0) {
            // Wait for more data
            return;
        }
        if (!header.more()) {
            decoder.finish(ctx, out);
        }
        headerParsed = false;
    }
}