Example usage for io.netty.buffer ByteBuf readBytes

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

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Introduction

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

Prototype

public abstract ByteBuf readBytes(ByteBuffer dst);

Source Link

Document

Transfers this buffer's data to the specified destination starting at the current readerIndex until the destination's position reaches its limit, and increases the readerIndex by the number of the transferred bytes.

Usage

From source file:com.streamsets.pipeline.lib.parser.net.DataFormatParserDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    final int numBytes = in.readableBytes();
    final byte[] bytes = new byte[numBytes];
    in.readBytes(bytes);

    DataParser parser = parserFactory.getParser(generateRecordId(), bytes);

    Record record;/*w  w w.  j av  a2  s .  com*/
    try {
        while ((record = parser.parse()) != null) {
            out.add(record);
        }
    } catch (RecoverableDataParserException e) {
        // allow to return
    } catch (Exception e) {
        ExceptionUtils.throwUndeclared(new OnRecordErrorException(Errors.DATA_PARSER_04, e.getMessage(), e));
    } finally {
        parser.close();
    }
}

From source file:com.teambr.modularsystems.core.network.SyncBlockValues.java

License:Creative Commons License

@Override
public void fromBytes(ByteBuf buf) {
    byte[] compressedBytes = null;
    int readableBytes = buf.readInt();

    if (readableBytes > 0)
        compressedBytes = buf.readBytes(readableBytes).array();

    if (compressedBytes != null)
        this.jsonBlockValues = CompressionFunctions.decompressStringFromByteArray(compressedBytes);
}

From source file:com.tesora.dve.db.mysql.common.MysqlAPIUtils.java

License:Open Source License

public static byte[] readBytes(ByteBuf cb, int len) {
    byte[] ret = new byte[len];
    cb.readBytes(ret);
    return ret;// w  w  w .  j  a v  a2 s.  co m
}

From source file:com.tesora.dve.db.mysql.common.MysqlAPIUtils.java

License:Open Source License

public static String readBytesAsString(ByteBuf cb, int len, Charset cs) {
    return cb.readBytes(len).toString(cs);
}

From source file:com.tesora.dve.db.mysql.libmy.MyBinaryResultRow.java

License:Open Source License

@Override
public void unmarshallMessage(ByteBuf cb) throws PEException {
    int expectedFieldCount = fieldConverters.size();
    int expectedBitmapLength = MyNullBitmap.computeSize(expectedFieldCount, MyNullBitmap.BitmapType.RESULT_ROW);
    cb = cb.order(ByteOrder.LITTLE_ENDIAN);
    cb.skipBytes(1);//skip the bin row marker.

    byte[] nullBitmap = new byte[expectedBitmapLength];
    cb.readBytes(nullBitmap);
    MyNullBitmap resultBitmap = new MyNullBitmap(nullBitmap, expectedFieldCount,
            MyNullBitmap.BitmapType.RESULT_ROW);

    ByteBuf values = cb;//from  w  w  w . j  a va  2 s.com

    for (int i = 0; i < expectedFieldCount; i++) {
        ByteBuf existing = fieldSlices.get(i);
        ByteBuf nextSlice = null;
        int startIndex = values.readerIndex();
        if (!resultBitmap.getBit(i + 1)) {
            fieldConverters.get(i).readObject(values);//TODO: we throw out the unmarshalled value, we could cache it.
            int endingOffset = values.readerIndex();
            nextSlice = values.slice(startIndex, endingOffset - startIndex);
        }

        if (existing != null)
            existing.release();
        fieldSlices.set(i, nextSlice);
    }
    if (cb.readableBytes() > 0) {
        log.warn("Decoded binary row had {} leftover bytes, re-encoding may fail.", cb.readableBytes());
        cb.skipBytes(cb.readableBytes());//consume rest of buffer.
    }
}

From source file:com.tesora.dve.mysqlapi.repl.messages.MyStatusVariables.java

License:Open Source License

public void parseStatusVariables(ByteBuf cb, int svLen) throws PEException {
    if (svLen > 0) {
        ByteBuf statsVarsBuf = cb.readBytes(svLen);
        while (statsVarsBuf.isReadable()) {
            byte code = statsVarsBuf.readByte();
            MyQueryEventCode mqec = MyQueryEventCode.fromByte(code);
            if (mqec == null) {
                throw new PEException("Replication could not decode query event code: '" + code + "' (0x"
                        + Integer.toHexString(code) + ")");
            }//from   ww  w.  j ava  2 s  .c o m

            switch (mqec) {
            case Q_FLAGS2_CODE:
                int flags = statsVarsBuf.readInt();
                suppliedEventCodes.add(new QueryFlags2Event(flags));
                break;

            case Q_SQL_MODE_CODE:
                long sqlMode = statsVarsBuf.readLong();
                suppliedEventCodes.add(new QuerySQLModeEvent(sqlMode));
                break;

            case Q_CATALOG_CODE: {
                byte len = statsVarsBuf.readByte();
                String catalog = MysqlAPIUtils.readBytesAsString(statsVarsBuf, len, CharsetUtil.UTF_8);
                statsVarsBuf.readByte(); // null terminated byte

                suppliedEventCodes.add(new QueryCatalogEvent(catalog));
                break;
            }
            case Q_AUTO_INCREMENT:
                int autoIncrementIncrement = statsVarsBuf.readUnsignedShort();
                int autoIncrementOffset = statsVarsBuf.readUnsignedShort();

                suppliedEventCodes
                        .add(new QueryAutoIncrementEvent(autoIncrementIncrement, autoIncrementOffset));
                break;

            case Q_CHARSET_CODE:
                int charSetClient = statsVarsBuf.readUnsignedShort();
                int collationConnection = statsVarsBuf.readUnsignedShort();
                int collationServer = statsVarsBuf.readUnsignedShort();

                suppliedEventCodes
                        .add(new QueryCharSetCodeEvent(charSetClient, collationConnection, collationServer));
                break;

            case Q_TIME_ZONE_CODE: {
                byte len = statsVarsBuf.readByte();
                String timeZone = MysqlAPIUtils.readBytesAsString(statsVarsBuf, len, CharsetUtil.UTF_8);

                suppliedEventCodes.add(new QueryTimeZoneCodeEvent(timeZone));
                break;
            }
            case Q_CATALOG_NZ_CODE: {
                byte catalogLen = statsVarsBuf.readByte();
                String catalog = MysqlAPIUtils.readBytesAsString(statsVarsBuf, catalogLen, CharsetUtil.UTF_8);

                suppliedEventCodes.add(new QueryCatalogNZEvent(catalog));
                break;
            }
            case Q_LC_TIME_NAMES_CODE:
                short monthDayNames = statsVarsBuf.readShort();

                suppliedEventCodes.add(new QueryTimeNamesEvent(monthDayNames));
                break;

            case Q_CHARSET_DATABASE_CODE:
                short collationDatabase = statsVarsBuf.readShort();

                suppliedEventCodes.add(new QueryCollationDatabaseEvent(collationDatabase));
                break;

            case Q_TABLE_MAP_FOR_UPDATE_CODE:
                long tableMapForUpdate = statsVarsBuf.readLong();

                suppliedEventCodes.add(new QueryTableMapEvent(tableMapForUpdate));
                break;

            case Q_MASTER_DATA_WRITTEN_CODE:
                int originalLength = statsVarsBuf.readInt();

                suppliedEventCodes.add(new QueryMasterDataWrittenEvent(originalLength));
                break;

            case Q_INVOKER:
                int userLen = statsVarsBuf.readByte();
                String user = MysqlAPIUtils.readBytesAsString(statsVarsBuf, userLen, CharsetUtil.UTF_8);
                int hostLen = statsVarsBuf.readByte();
                String host = MysqlAPIUtils.readBytesAsString(statsVarsBuf, hostLen, CharsetUtil.UTF_8);

                suppliedEventCodes.add(new QueryInvokerEvent(user, host));
                break;

            case Q_UPDATED_DB_NAMES:
                List<String> dbNames = new ArrayList<String>();
                int numDbs = statsVarsBuf.readByte();
                if (numDbs > 0) {
                    for (int i = 0; i < numDbs; i++) {
                        dbNames.add(statsVarsBuf.readSlice(statsVarsBuf.bytesBefore((byte) 0))
                                .toString(CharsetUtil.UTF_8));
                        statsVarsBuf.readByte(); //read null byte
                    }
                }
                suppliedEventCodes.add(new QueryUpdatedDBNamesEvent(dbNames));
                break;

            case Q_MICROSECONDS:
                int microseconds = statsVarsBuf.readMedium();

                suppliedEventCodes.add(new QueryMicrosecondsEvent(microseconds));
                break;

            case Q_HRNOW:
                //TODO: this was apparently added for MariaDB, but I can't find a lot of info on it. skip for now.
                suppliedEventCodes.add(new QueryMicrosecondsEvent(statsVarsBuf.readUnsignedMedium()));
                break;

            default:
                throw new PEException("Replication encountered an unknown query event code: '" + code + "' (0x"
                        + Integer.toHexString(code) + ")");
            }
        }
    }
}

From source file:com.tesora.dve.mysqlapi.repl.messages.MyUserVarLogEvent.java

License:Open Source License

String processDecimalValue(ByteBuf cb, int valueLen) throws PEException {
    String value = StringUtils.EMPTY;

    byte precision = cb.readByte();
    byte scale = cb.readByte();

    int intg = (int) precision - (int) scale;
    int intg0 = intg / DIG_PER_DEC1;
    int frac0 = (int) scale / DIG_PER_DEC1;
    int intg0x = intg - intg0 * DIG_PER_DEC1;
    int frac0x = (int) scale - frac0 * DIG_PER_DEC1;

    int firstValue = intg0 * 4 + dig2bytes[intg0x];
    int secondValue = frac0 * 4 + dig2bytes[frac0x];

    int binSize = firstValue + secondValue;

    int readableBytes = cb.readableBytes();
    if ((firstValue < 1 && secondValue < 1) || readableBytes < binSize) {
        throw new PEException("Cannot decode binary decimal");
    }//from   w  w w  .  j a  v a  2s  .c om

    ByteBuf chunk = PooledByteBufAllocator.DEFAULT.heapBuffer(binSize);
    cb.readBytes(chunk);

    // 1st byte is special cause it determines the sign
    byte firstByte = chunk.getByte(0);
    int sign = (firstByte & 0x80) == 0x80 ? 1 : -1;
    // invert sign
    chunk.setByte(0, (firstByte ^ 0x80));

    if (sign == -1) {
        // invert all the bytes
        for (int i = 0; i < binSize; i++) {
            chunk.setByte(i, ~chunk.getByte(i));
        }
    }

    BigDecimal integerPortion = decodeBinDecimal(chunk, firstValue, true);
    BigDecimal fractionPortion = decodeBinDecimal(chunk, secondValue, false);

    value = ((sign == -1) ? "-" : StringUtils.EMPTY) + integerPortion.toPlainString() + "."
            + fractionPortion.toPlainString();

    return value;
}

From source file:com.tesora.dve.mysqlapi.repl.messages.MyUserVarLogEvent.java

License:Open Source License

BigDecimal decodeBinDecimal(ByteBuf cb, int bufferLen, boolean isIntegerPortion) throws PEException {
    BigDecimal decimalPortion = new BigDecimal(0);
    if (bufferLen > 0) {

        ByteBuf decimalPortionBuf = cb.readBytes(bufferLen);

        if (isIntegerPortion) {
            int initialBytes = bufferLen % 4;
            if (initialBytes > 0) {
                long intValue = readValue(decimalPortionBuf, initialBytes);
                decimalPortion = BigDecimal.valueOf(intValue);
            }//from ww  w  .j  ava 2  s  .  c o m
        }

        int decimalPortionLen = decimalPortionBuf.readableBytes();

        while (decimalPortionLen > 0) {
            int nextLen = (decimalPortionLen < 4) ? decimalPortionLen : 4;
            long intValue = readValue(decimalPortionBuf, nextLen);

            if (intValue > 0) {
                if (decimalPortion.longValue() == 0) {
                    decimalPortion = decimalPortion.add(BigDecimal.valueOf(intValue));
                } else {
                    int digits = (int) (Math.log10(intValue) + 1);
                    decimalPortion = decimalPortion.movePointRight(digits).add(BigDecimal.valueOf(intValue));
                }
            }

            decimalPortionLen = decimalPortionBuf.readableBytes();
        }
    }
    return decimalPortion;
}

From source file:com.theoriginalbit.moarperipherals.common.network.message.MessageGeneric.java

License:Apache License

@Override
public void fromBytes(ByteBuf buf) {
    int nStr = buf.readInt();
    stringData = new String[nStr];
    if (nStr > 0) {
        for (int i = 0; i < nStr; ++i) {
            stringData[i] = ByteBufUtils.readUTF8String(buf);
        }/* w w w .j  ava  2s.c o m*/
    }

    int nInt = buf.readInt();
    intData = new int[nInt];
    if (nInt > 0) {
        for (int i = 0; i < nInt; ++i) {
            intData[i] = buf.readInt();
        }
    }

    int nByte = buf.readInt();
    byteData = new byte[nByte];
    if (nByte > 0) {
        buf.readBytes(byteData);
    }

    int nChar = buf.readInt();
    charData = new char[nChar];
    if (nChar > 0) {
        for (int i = 0; i < nChar; ++i) {
            charData[i] = buf.readChar();
        }
    }

    int nFloat = buf.readInt();
    floatData = new float[nFloat];
    if (nFloat > 0) {
        for (int i = 0; i < nFloat; ++i) {
            floatData[i] = buf.readFloat();
        }
    }

    int nDouble = buf.readInt();
    doubleData = new double[nDouble];
    if (nDouble > 0) {
        for (int i = 0; i < nDouble; ++i) {
            doubleData[i] = buf.readDouble();
        }
    }

    boolean wasNBT = buf.readBoolean();
    if (wasNBT) {
        nbtData = ByteBufUtils.readTag(buf);
    }
}

From source file:com.torchmind.netty.msgpack.codec.MessageCodec.java

License:Apache License

/**
 * {@inheritDoc}// w ww  .ja v a  2s  .  c o  m
 */
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    // read identifier
    short identifier = in.readShort();

    // search message type
    Class<?> type = this.getRegistry().getMessageType(identifier);

    // read data
    byte[] data = new byte[in.readableBytes()];
    in.readBytes(data);

    // decode message
    out.add(this.messagePack.read(data, type));
}