Example usage for io.netty.buffer ByteBuf readableBytes

Introduction

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

Prototype

public abstract int readableBytes();

Source Link

Document

Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex) .

Usage

From source file:com.github.milenkovicm.kafka.CrcTest.java

License:Apache License

long calculateJCrc(ByteBuf messageSet, int position) {
    crc.reset();/*from   w w  w .j  a  v a 2 s. c  om*/

    int readableBytes = messageSet.readableBytes();
    int bufferLength = buffer.length;
    //int position = 0;

    while (position < readableBytes) {
        int length = readableBytes - position >= bufferLength ? bufferLength : readableBytes - position;
        messageSet.getBytes(position, buffer, 0, length);
        crc.update(buffer, 0, length);

        position += bufferLength;
    }
    return crc.getValue();
}

From source file:com.github.milenkovicm.kafka.handler.AbstractProducerHandler.java

License:Apache License

long calculateCrc(ByteBuf messageSet, int position) {
    crc.reset();// w ww.java2s  .c  o m

    int readableBytes = messageSet.readableBytes();
    int bufferLength = buffer.length;

    while (position < readableBytes) {
        int length = readableBytes - position >= bufferLength ? bufferLength : readableBytes - position;
        messageSet.getBytes(position, buffer, 0, length);
        crc.update(buffer, 0, length);

        position += bufferLength;
    }
    return crc.getValue();
}

From source file:com.github.milenkovicm.kafka.handler.CompositeProducerHandler.java

License:Apache License

ByteBuf creteProduceRequest(ByteBufAllocator allocator, ByteBuf messageSet, String topic) {
    final int messageSetSize = messageSet.readableBytes();

    // a bit hardcoded logic follows
    // total length is length of the all fields
    // i've pre-calculated sizes of arrays and strings in case of
    // topic and client id
    final int totalLength = 22 + messageSetSize + Convert.sizeOfString(topicNameEncoded)
            + Convert.sizeOfString(clientIdEncoded);
    // 18 + clientId.length
    ByteBuf header = allocator/*from  w  w w  .  jav a2s .  co  m*/
            .buffer(24 + Convert.sizeOfString(topicNameEncoded) + Convert.sizeOfString(clientIdEncoded));
    createMessageHeader(totalLength, header);

    updateCrc(messageSet);
    return Unpooled.wrappedBuffer(header, messageSet);

}

From source file:com.github.milenkovicm.kafka.handler.CopyProducerHandler.java

License:Apache License

ByteBuf creteProduceRequest(ByteBufAllocator allocator, ByteBuf messageSet, String topic) {
    final int messageSetSize = messageSet.readableBytes();
    // a bit hardcoded logic follows
    // total length is length of the all fields
    // i've pre-calculated sizes of arrays and strings in case of
    // topic and client id
    final int totalLength = 22 + messageSetSize + Convert.sizeOfString(topicNameEncoded)
            + Convert.sizeOfString(clientIdEncoded);

    ByteBuf buffer = allocator.buffer(totalLength + 4); // msg length + size of length field
    createMessageHeader(totalLength, buffer);
    updateCrc(messageSet);//w  w  w  .  ja  va2  s  . com
    buffer.writeBytes(messageSet);

    return buffer;
}

From source file:com.github.milenkovicm.kafka.protocol.Convert.java

License:Apache License

public static void encodeBytes(ByteBuf bytes, ByteBuf buf) {
    if (bytes != null) {
        int readable = bytes.readableBytes();
        encodeInteger(readable, buf);//from   ww  w .  j a  v  a  2s  .  co  m
        buf.writeBytes(bytes, 0, readable); // content
    } else {
        encodeInteger(NULL_VALUE_LENGTH, buf); // indicates null
    }
}

From source file:com.github.milenkovicm.kafka.protocol.Convert.java

License:Apache License

public static int sizeOfBytes(ByteBuf bytes) {
    if (bytes != null) {
        return SIZE_OF_INT + bytes.readableBytes();
    } else {/*  w w  w.j  av a 2s.c  om*/
        return SIZE_OF_INT;
    }

}

From source file:com.github.mrstampy.gameboot.otp.websocket.client.WebSocketHandler.java

License:Open Source License

private byte[] extractBytes(Object msg) {
    BinaryWebSocketFrame frame = (BinaryWebSocketFrame) msg;

    ByteBuf buf = frame.content();

    byte[] b = new byte[buf.readableBytes()];

    buf.readBytes(b);/* www.  j av  a2 s  . c o  m*/

    return b;
}

From source file:com.github.mrstampy.kitchensync.netty.handler.AbstractKiSyNettyHandler.java

License:Open Source License

/**
 * Bytes.//  w  w  w.  j  a  v a2  s .  c o  m
 *
 * @param msg
 *          the msg
 * @return the byte[]
 */
protected byte[] bytes(DatagramPacket msg) {
    ByteBuf content = msg.content();

    int num = content.readableBytes();
    byte[] message = new byte[num];
    content.readBytes(message);

    return message;
}

From source file:com.github.nettybook.ch0.LoggingHandler.java

License:Apache License

/**
 * Generates the default log message of the specified event whose argument is a {@link ByteBuf}.
 *///  w  ww.  j av a2 s . c om
private static String formatByteBuf(ChannelHandlerContext ctx, String eventName, ByteBuf msg) {
    String chStr = ctx.channel().toString();
    int length = msg.readableBytes();
    if (length == 0) {
        StringBuilder buf = new StringBuilder(chStr.length() + 1 + eventName.length() + 4);
        buf.append(chStr).append(' ').append(eventName).append(": 0B");
        return buf.toString();
    } else {
        int rows = length / 16 + (length % 15 == 0 ? 0 : 1) + 4;
        StringBuilder buf = new StringBuilder(
                chStr.length() + 1 + eventName.length() + 2 + 10 + 1 + 2 + rows * 80);

        buf.append(chStr).append(' ').append(eventName).append(": ").append(length).append('B');
        appendHexDump(buf, msg);

        return buf.toString();
    }
}

From source file:com.github.nettybook.ch0.LoggingHandler.java

License:Apache License

/**
 * Generates the default log message of the specified event whose argument is a {@link ByteBufHolder}.
 *///from   w  w  w.j  a v a 2s. com
private static String formatByteBufHolder(ChannelHandlerContext ctx, String eventName, ByteBufHolder msg) {
    String chStr = ctx.channel().toString();
    String msgStr = msg.toString();
    ByteBuf content = msg.content();
    int length = content.readableBytes();
    if (length == 0) {
        StringBuilder buf = new StringBuilder(
                chStr.length() + 1 + eventName.length() + 2 + msgStr.length() + 4);
        buf.append(chStr).append(' ').append(eventName).append(", ").append(msgStr).append(", 0B");
        return buf.toString();
    } else {
        int rows = length / 16 + (length % 15 == 0 ? 0 : 1) + 4;
        StringBuilder buf = new StringBuilder(
                chStr.length() + 1 + eventName.length() + 2 + msgStr.length() + 2 + 10 + 1 + 2 + rows * 80);

        buf.append(chStr).append(' ').append(eventName).append(": ");
        buf.append(msgStr).append(", ").append(length).append('B');
        appendHexDump(buf, content);

        return buf.toString();
    }
}