Example usage for io.netty.buffer ByteBuf readerIndex

Introduction

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

Prototype

public abstract ByteBuf readerIndex(int readerIndex);

Source Link

Document

Sets the readerIndex of this buffer.

Usage

From source file:com.heliosapm.streams.metrics.aggregation.StreamedMetricAggregation.java

License:Apache License

/**
 * Creates a new StreamedMetricAggregation from the passed bytes
 * @param bytes The bytes to read from/*from   w ww .  ja v  a  2  s  .co m*/
 */
private StreamedMetricAggregation(final byte[] bytes) {
    size = bytes.length;
    final ByteBuf b = BufferManager.getInstance().buffer(size).writeBytes(bytes);
    try {
        sticky = b.getByte(STICKY) == 1;
        doubleType = b.getByte(DOUBLE_TYPE) == 1;
        createTime = b.getLong(CREATE_TIME);
        period = b.getLong(PERIOD);
        periodUnit = TUNITS[b.getByte(PERIOD_UNIT)];
        b.readerIndex(METRIC_VALUES);
        values.put(bytes, METRIC_VALUES, VALUE_SIZE);
        final byte tagCount = b.getByte(TAG_COUNT);
        b.readerIndex(METRIC_NAME);
        metricName = nextString(b);
        for (int i = 0; i < tagCount; i++) {
            tags.put(nextString(b), nextString(b));
            i++;
        }
    } finally {
        try {
            b.release();
        } catch (Exception x) {
            /* No Op */}
    }
}

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From source file:com.heliosapm.streams.tracing.AbstractMetricWriter.java

License:Apache License

/**
 * {@inheritDoc}//from   w w  w .  ja  v  a 2 s .  c om
 * @see com.heliosapm.streams.tracing.IMetricWriter#onMetrics(io.netty.buffer.ByteBuf)
 */
@Override
public void onMetrics(final ByteBuf metrics) {
    metrics.readerIndex(0);
    final InputStream is = new ByteBufInputStream(metrics);
    try {
        for (StreamedMetric sm : StreamedMetric.streamedMetrics(is, true, false)) {
            onMetrics(sm);
        }
        //onMetrics(StreamedMetric.read(is));
    } finally {
        try {
            is.close();
        } catch (Exception x) {
            /* No Op */}
    }
}

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From source file:com.heliosapm.utils.buffer.BufferManager.java

License:Apache License

/**
 * Reads a UTF string from the passed ByteBuff
 * @param offset int The offset in the buffer to read from
 * @param in The ByteBuf to read from/*from   w  ww .  ja v a2 s .c o  m*/
 * @return the read string
 */
public final static String readUTF(final int offset, final ByteBuf in) {
    try {
        in.markReaderIndex();
        in.readerIndex(offset);
        return readUTF(in);
    } finally {
        in.resetReaderIndex();
    }
}

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From source file:com.ibasco.agql.protocols.valve.source.query.SourcePacketBuilder.java

License:Open Source License

@Override
public <T extends SourceServerPacket> T construct(ByteBuf data) {
    //Mark Index/*from   ww w. ja  va 2  s.co  m*/
    data.markReaderIndex();

    try {
        //Reset the index
        data.readerIndex(0);

        //Verify size
        if (data.readableBytes() < 5)
            throw new IllegalStateException(
                    "Cannot continue processing buffer with less than or equal to 4 bytes");

        //Read protocol header
        int protocolHeader = data.readIntLE();

        //Check if this is a split packet
        if (protocolHeader == 0xFFFFFFFE)
            throw new IllegalStateException("Cannot construct a response from a partial/split packet.");

        //Verify that we have a valid header
        if (protocolHeader != 0xFFFFFFFF)
            throw new IllegalStateException("Protocol header not supported.");

        //Read packet header
        byte packetHeader = data.readByte();

        //Read payload
        byte[] payload = new byte[data.readableBytes()];
        data.readBytes(payload);

        //Verify if packet header is valid
        SourceServerPacket packet = createResponsePacketFromHeader(packetHeader);

        //If packet is empty, means the supplied packet header is not supported
        if (packet == null)
            return null;

        packet.setProtocolHeader(ByteUtils.byteArrayFromInteger(protocolHeader));
        packet.setHeader(packetHeader);
        packet.setPayload(payload);

        return (T) packet;
    } finally {
        data.resetReaderIndex();
    }
}

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From source file:com.ibasco.agql.protocols.valve.source.query.SourceRconPacketBuilder.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override//w  ww. j av a  2 s. co m
public <T extends SourceRconPacket> T construct(ByteBuf data) {
    try {
        if (data.readableBytes() < 14) {
            log.warn("Packet is less than 10 bytes. Unsupported packet.");
            if (log.isDebugEnabled())
                log.debug("Unrecognized Packet: \n{}", ByteBufUtil.prettyHexDump(data));
            return null;
        }

        //Remember the reader index
        data.markReaderIndex();

        //Read from the listen
        data.readerIndex(0);
        int size = data.readIntLE();
        int id = data.readIntLE();
        int type = data.readIntLE();

        String body = data.readCharSequence(data.readableBytes() - 2, StandardCharsets.UTF_8).toString();

        SourceRconResponsePacket packet = getResponsePacket(type);

        if (packet != null) {
            //Ok, we have a valid response packet. Lets keep reading.
            packet.setId(id);
            packet.setSize(size);
            packet.setType(type);
            packet.setBody(body);
            return (T) packet;
        }
    } finally {
        //Reset the index
        data.resetReaderIndex();
    }
    return null;
}

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From source file:com.ibasco.agql.protocols.valve.steam.master.MasterServerPacketBuilder.java

License:Open Source License

@Override
public <T extends MasterServerPacket> T construct(ByteBuf data) {
    //Mark Index// w  w  w . j  a va 2  s . c om
    data.markReaderIndex();
    try {
        //Reset the index
        data.readerIndex(0);
        //Verify size
        if (data.readableBytes() <= 6)
            throw new IllegalStateException(
                    "Cannot continue processing buffer with less than or equal to 6 bytes");
        //Read header
        byte[] header = new byte[6];
        data.readBytes(header);
        //Read payload
        byte[] payload = new byte[data.readableBytes()];
        data.readBytes(payload);
        //Verify if packet header is valid
        MasterServerResponsePacket packet = new MasterServerResponsePacket();
        packet.setHeader(header);
        packet.setPayload(payload);
        return (T) packet;
    } finally {
        data.resetReaderIndex();
    }
}

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From source file:com.l2jmobius.commons.network.codecs.CryptCodec.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    in.resetReaderIndex();//from  ww  w . j a v a 2 s  . c  om
    _crypt.decrypt(in);
    in.readerIndex(in.writerIndex());
    out.add(in.copy(0, in.writerIndex()));
}

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From source file:com.l2jmobius.commons.network.codecs.PacketDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) {
    if ((in == null) || !in.isReadable()) {
        return;/*from   w  w w  . ja v a 2s  .co  m*/
    }

    if (in.order() != _byteOrder) {
        in = in.order(_byteOrder);
    }

    try {
        final short packetId = in.readUnsignedByte();
        if (packetId >= _incomingPackets.length) {
            LOGGER.finer("Unknown packet: " + Integer.toHexString(packetId));
            return;
        }

        final IIncomingPackets<T> incomingPacket = _incomingPackets[packetId];
        if (incomingPacket == null) {
            LOGGER.finer("Unknown packet: " + Integer.toHexString(packetId));
            return;
        }

        final IConnectionState connectionState = ctx.channel().attr(IConnectionState.ATTRIBUTE_KEY).get();
        if ((connectionState == null) || !incomingPacket.getConnectionStates().contains(connectionState)) {
            // LOGGER.warning(incomingPacket + ": Connection at invalid state: " + connectionState + " Required States: " + incomingPacket.getConnectionStates());
            return;
        }

        final IIncomingPacket<T> packet = incomingPacket.newIncomingPacket();
        if ((packet != null) && packet.read(_client, new PacketReader(in))) {
            out.add(packet);
        }
    } finally {
        // We always consider that we read whole packet.
        in.readerIndex(in.writerIndex());
    }
}

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From source file:com.mpush.netty.codec.PacketDecoder.java

License:Apache License

private void decodeHeartbeat(ByteBuf in, List<Object> out) {
    while (in.isReadable()) {
        if (in.readByte() == Packet.HB_PACKET_BYTE) {
            out.add(Packet.HB_PACKET);/*  w w  w. jav  a 2s . c  om*/
        } else {
            in.readerIndex(in.readerIndex() - 1);
            break;
        }
    }
}

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From source file:com.navercorp.nbasearc.gcp.RedisDecoder.java

License:Apache License

private boolean hasFrame(ByteBuf in) {
    if (in.isReadable() == false) {
        return false;
    }/*from   w  w w  .j a va  2  s . co  m*/

    lookasideBufferLength = Math.min(in.readableBytes(), lookasideBuffer.length);
    in.readBytes(lookasideBuffer, 0, lookasideBufferLength);
    lookasideBufferReaderIndex = 0;
    in.readerIndex(in.readerIndex() - lookasideBufferLength);

    byte b = lookasideBuffer[lookasideBufferReaderIndex++];
    in.skipBytes(1);
    if (b == MINUS_BYTE) {
        return processError(in);
    } else if (b == ASTERISK_BYTE) {
        return processMultiBulkReply(in);
    } else if (b == COLON_BYTE) {
        return processInteger(in);
    } else if (b == DOLLAR_BYTE) {
        return processBulkReply(in);
    } else if (b == PLUS_BYTE) {
        return processStatusCodeReply(in);
    } else {
        throw new JedisConnectionException("Unknown reply: " + (char) b);
    }
}

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