Example usage for io.netty.buffer ByteBuf readSlice

Introduction

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

Prototype

public abstract ByteBuf readSlice(int length);

Source Link

Document

Returns a new slice of this buffer's sub-region starting at the current readerIndex and increases the readerIndex by the size of the new slice (= length ).

Usage

From source file:com.eightkdata.mongowp.bson.netty.OffHeapNettyBsonLowLevelReader.java

License:Open Source License

@Override
BsonArray readArray(@Loose @ModifiesIndexes ByteBuf byteBuf) throws NettyBsonReaderException {
    int length = byteBuf.readInt();
    int significantLenght = length - 4; //the final 0x00 must be included

    ByteBuf significantSlice = byteBuf.readSlice(significantLenght);

    assert byteBuf.getByte(byteBuf.readerIndex() - 1) == 0x00;

    return new IterableNettyBsonArray(significantSlice, this);
}

From source file:com.eightkdata.mongowp.bson.netty.OffHeapValuesNettyBsonLowLevelReader.java

License:Open Source License

@Override
BsonDocument readDocument(@Loose @ModifiesIndexes ByteBuf byteBuf) throws NettyBsonReaderException {
    int length = byteBuf.readInt();
    int significantLenght = length - 4 - 1;

    ByteBuf significantSlice = byteBuf.readSlice(significantLenght);

    byte b = byteBuf.readByte();
    assert b == 0x00;

    ArrayList<BsonDocument.Entry<?>> list = new ArrayList<>();
    while (significantSlice.readableBytes() > 0) {
        Entry<?> entry = readDocumentEntry(significantSlice);
        list.add(entry);/*from  ww  w  . j  a v  a  2  s  .  co  m*/
    }
    return new ListBasedBsonDocument(list);
}

From source file:com.eightkdata.mongowp.bson.netty.OffHeapValuesNettyBsonLowLevelReader.java

License:Open Source License

@Override
BsonBinary readBinary(@Loose @ModifiesIndexes ByteBuf byteBuf) {
    int length = byteBuf.readInt();
    byte subtype = byteBuf.readByte();

    ByteBuf content = byteBuf.readSlice(length);

    return new NettyBsonBsonBinary(subtype, ParsingTools.getBinarySubtype(subtype), content);
}

From source file:com.eightkdata.mongowp.bson.netty.PooledNettyStringReader.java

License:Open Source License

/**
 * A method that reads a C-string from a ByteBuf. This method modified the internal state of the
 * ByteBuf, advancing the read pointer to the position after the cstring.
 *
 * @param buffer/*  w  w  w. j a v a  2s  .  co m*/
 * @param likelyCacheable
 * @return The C-String as a String object or null if there was no C-String in the ByteBuf
 * @throws com.eightkdata.mongowp.bson.netty.NettyBsonReaderException
 */
@Override
public String readCString(ByteBuf buffer, boolean likelyCacheable) throws NettyBsonReaderException {
    int pos = buffer.bytesBefore(CSTRING_BYTE_TERMINATION);
    if (pos == -1) {
        throw new NettyBsonReaderException("A cstring was expected but no 0x00 byte was found");
    }

    String result = stringPool.fromPool(likelyCacheable, buffer.readSlice(pos));

    buffer.readByte(); // Discard the termination byte

    return result;
}

From source file:com.eightkdata.mongowp.bson.netty.PooledNettyStringReader.java

License:Open Source License

@Override
public ByteBuf readStringAsSlice(@Loose @ModifiesIndexes ByteBuf byteBuf) {
    int stringLength = byteBuf.readInt();
    ByteBuf result = byteBuf.readSlice(stringLength - 1);
    byte b = byteBuf.readByte(); // discard the last 0x00
    assert b == 0x00;

    return result;
}

From source file:com.github.spapageo.jannel.channel.ChannelBufferUtils.java

License:Open Source License

/**
 * Reads a new octet string from the byte buffer using the UTF-8 encoding
 * @param byteBuffer the bytes to read the string from
 * @param charset    the charset to use in order to decode the string
 * @return the created string//from  w  ww  .j  a  v a2s. co m
 */
@Nonnull
public static String readOctetStringToString(ByteBuf byteBuffer, Charset charset) {

    if (byteBuffer.readableBytes() < 4)
        throw new NotEnoughDataDecoderException("Not enough bytes to read the octet string size");

    int stringSize = byteBuffer.readInt();

    checkOctetStringSize(byteBuffer, stringSize);

    if (stringSize == -1)
        return EMPTY_STRING;

    return byteBuffer.readSlice(stringSize).toString(charset);
}

From source file:com.github.sparkfy.network.client.StreamInterceptor.java

License:Apache License

@Override
public boolean handle(ByteBuf buf) throws Exception {
    int toRead = (int) Math.min(buf.readableBytes(), byteCount - bytesRead);
    ByteBuffer nioBuffer = buf.readSlice(toRead).nioBuffer();

    int available = nioBuffer.remaining();
    callback.onData(streamId, nioBuffer);
    bytesRead += available;//from w  w w.j a  v a  2 s  .c  o m
    if (bytesRead > byteCount) {
        RuntimeException re = new IllegalStateException(
                String.format("Read too many bytes? Expected %d, but read %d.", byteCount, bytesRead));
        callback.onFailure(streamId, re);
        handler.deactivateStream();
        throw re;
    } else if (bytesRead == byteCount) {
        handler.deactivateStream();
        callback.onComplete(streamId);
    }

    return bytesRead != byteCount;
}

From source file:com.hazelcast.simulator.protocol.core.SimulatorMessageCodec.java

License:Open Source License

public static SimulatorMessage decodeSimulatorMessage(ByteBuf buffer) {
    int frameLength = buffer.readInt();
    int dataLength = frameLength - HEADER_SIZE;

    if (buffer.readInt() != MAGIC_BYTES) {
        throw new IllegalArgumentException("Invalid magic bytes for SimulatorMessage");
    }/*from   w ww  .j  a  v  a  2s. c om*/

    SimulatorAddress destination = decodeSimulatorAddress(buffer);
    SimulatorAddress source = decodeSimulatorAddress(buffer);

    long messageId = buffer.readLong();
    OperationType operationType = OperationType.fromInt(buffer.readInt());

    String operationData = buffer.readSlice(dataLength).toString(UTF_8);

    return new SimulatorMessage(destination, source, messageId, operationType, operationData);
}

From source file:com.ibm.crail.datanode.netty.rpc.RdmaMsgRx.java

License:Apache License

final public void referenceRxPayloadAndRetain(ByteBuf src) {
    this.rxPayload = src.readSlice(this.opLength).retain();
    assert this.rxPayload.readableBytes() == this.opLength;
}

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

License:Apache License

/**
 * Helper used during decoding of a ZMTP frame
 *
 * @param length length of buffer//from  w  w  w.  j  a  va  2s  .c om
 * @return A {@link ZMTPFrame} containg the data read from the buffer.
 */
public static ZMTPFrame read(ByteBuf buffer, int length) {
    if (length > 0) {
        final ByteBuf data = buffer.readSlice(length);
        return create(data);
    } else {
        return EMPTY_FRAME;
    }
}