Examples with DataStreamRequestHeader org.apache.ratis.protocol.DataStreamRequestHeader used on opensource projects

Example 1 with DataStreamRequestHeader

use of org.apache.ratis.protocol.DataStreamRequestHeader in project incubator-ratis by apache.

the class NettyDataStreamUtils method decodeDataStreamRequestHeader.

static DataStreamRequestHeader decodeDataStreamRequestHeader(ByteBuf buf) {
    if (DataStreamPacketHeader.getSizeOfHeaderBodyLen() > buf.readableBytes()) {
        return null;
    }
    long headerBodyBufLen = buf.readLong();
    if (headerBodyBufLen > buf.readableBytes()) {
        buf.resetReaderIndex();
        return null;
    }
    int headerBufLen = buf.readInt();
    if (headerBufLen > buf.readableBytes()) {
        buf.resetReaderIndex();
        return null;
    }
    try {
        ByteBuf headerBuf = buf.slice(buf.readerIndex(), headerBufLen);
        DataStreamRequestHeaderProto header = DataStreamRequestHeaderProto.parseFrom(headerBuf.nioBuffer());
        final DataStreamPacketHeaderProto h = header.getPacketHeader();
        if (h.getDataLength() + headerBufLen <= buf.readableBytes()) {
            buf.readerIndex(buf.readerIndex() + headerBufLen);
            WriteOption[] options = new WriteOption[h.getOptionsCount()];
            for (int i = 0; i < options.length; i++) {
                options[i] = StandardWriteOption.values()[h.getOptions(i).ordinal()];
            }
            return new DataStreamRequestHeader(ClientId.valueOf(h.getClientId()), h.getType(), h.getStreamId(), h.getStreamOffset(), h.getDataLength(), options);
        } else {
            buf.resetReaderIndex();
            return null;
        }
    } catch (InvalidProtocolBufferException e) {
        LOG.error("Fail to decode request header:", e);
        buf.resetReaderIndex();
        return null;
    }
}