Example usage for io.netty.buffer ByteBuf readByte

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

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Introduction

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

Prototype

public abstract byte readByte();

Source Link

Document

Gets a byte at the current readerIndex and increases the readerIndex by 1 in this buffer.

Usage

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

License:Open Source License

@Override
public void unmarshallMessage(ByteBuf cb) {
    threadId = cb.readInt();//from w  w w.ja v  a2 s . c om
    time = cb.readInt();
    ignoreLines = cb.readInt();
    tableLen = cb.readByte();
    dbLen = cb.readByte();
    columns = cb.readInt();
    // TODO: need to parse out the variable part of the data
    variableData = Unpooled.buffer(cb.readableBytes());
    variableData.writeBytes(cb);
}

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

License:Open Source License

@Override
public void unmarshallMessage(ByteBuf cb) throws PEException {

    // read event header
    slaveProxyId = cb.readUnsignedInt();
    execTime = cb.readUnsignedInt();/*from   w ww. j  a  va 2s .  c  o  m*/
    dbNameLen = cb.readByte();
    errorCode = cb.readUnsignedShort();
    statusVarsLen = cb.readUnsignedShort();

    statusVars.parseStatusVariables(cb, statusVarsLen);

    dbName = MysqlAPIUtils.readBytesAsString(cb, dbNameLen, CharsetUtil.UTF_8);
    cb.skipBytes(1); //for trailing 0
    query = Unpooled.buffer(cb.readableBytes());
    query.writeBytes(cb);
    origQuery = query.toString(CharsetUtil.UTF_8);
}

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

License:Open Source License

@Override
public void unmarshallMessage(ByteBuf cb) throws PEException {
    //assumes the provided buffer is already scoped to payload boundary.

    rawPayload = cb.slice().copy();//from   w w w  .ja  v a  2 s  . co  m

    // 19 bytes for the common header
    commonHdr = new MyReplEventCommonHeader();
    commonHdr.setTimestamp(cb.readUnsignedInt());
    commonHdr.setType(cb.readByte());
    commonHdr.setServerId(cb.readUnsignedInt());
    commonHdr.setTotalSize(cb.readUnsignedInt());
    commonHdr.setMasterLogPosition(cb.readUnsignedInt());
    commonHdr.setFlags(cb.readShort());

    // unmarshall message based on common header type
    if (logger.isDebugEnabled())
        logger.debug("Unmarshalling event of type: " + MyLogEventType.fromByte(commonHdr.getType()).name());

    levp = MyLogEventPacket.MySqlLogEventFactory.newInstance(MyLogEventType.fromByte(commonHdr.getType()),
            commonHdr);

    levp.unmarshallMessage(cb);
}

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) + ")");
            }/* w  ww. j  a  va 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

@Override
public void unmarshallMessage(ByteBuf cb) throws PEException {
    variableNameLen = cb.readInt();/*w  w w. ja  v a2  s.  c  o m*/
    variableName = MysqlAPIUtils.readBytesAsString(cb, variableNameLen, CharsetUtil.UTF_8);
    nullByte = cb.readByte();
    if (nullByte != 1) {
        variableValue = processVariableValue(cb);
    } else {
        variableValue = "NULL";
    }
}

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

License:Open Source License

String processVariableValue(ByteBuf cb) throws PEException {
    String value = StringUtils.EMPTY;

    valueType = MyItemResultCode.fromByte(cb.readByte());
    valueCharSet = cb.readInt();/* ww w.  ja  v a2s . c o m*/
    valueLen = cb.readInt();
    valueBytes = Unpooled.buffer(cb.readableBytes()).order(ByteOrder.LITTLE_ENDIAN);
    valueBytes.writeBytes(cb);

    switch (valueType) {
    case DECIMAL_RESULT:
        value = processDecimalValue(valueBytes, valueLen);
        break;
    case INT_RESULT:
        value = processIntValue(valueBytes, valueLen);
        break;
    case REAL_RESULT:
        value = Double.toString(valueBytes.readDouble());
        break;
    case STRING_RESULT:
        value = "'" + StringUtils.replace(
                MysqlAPIUtils.readBytesAsString(valueBytes, valueLen, CharsetUtil.UTF_8), "'", "''") + "'";
        break;
    case ROW_RESULT:
    default:
        throw new PEException(
                "Unsupported variable type '" + valueType + "' for variable '" + variableName + "'");
    }
    return value;
}

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");
    }/*  w w w.  j  av  a 2  s.  c o m*/

    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

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

    switch (valueLen) {
    case 8:/*from   ww w .  j a  v a 2  s  .c o m*/
        value = Long.toString(cb.readLong());
        break;
    case 7:
    case 6:
    case 5:
        throw new PEException(
                "Cannot decode INT value of length '" + valueLen + "' for variable '" + variableName + "'");
    case 4:
        value = Long.toString(cb.readInt());
        break;
    case 3:
        value = Long.toString(cb.readMedium());
        break;
    case 2:
        value = Long.toString(cb.readShort());
        break;
    case 1:
        value = Byte.toString(cb.readByte());
        break;
    }
    return value;
}

From source file:com.tesora.dve.server.connectionmanager.loaddata.MSPLoadDataDecoder.java

License:Open Source License

private void processQueuedOutput(ChannelHandlerContext ctx) throws Exception {
    byte packetNumber = 0;
    for (;;) {/*  w  w  w.j  av a 2 s  .c  o m*/
        ByteBuf nextDecodedFrame = decodedFrameQueue.poll();

        if (nextDecodedFrame == null)
            break;

        try {
            if (encounteredError == null) {

                packetNumber = nextDecodedFrame.readByte();
                byte[] frameData = MysqlAPIUtils.readBytes(nextDecodedFrame);

                final List<List<byte[]>> parsedRows = LoadDataBlockExecutor.processDataBlock(ctx, ssCon,
                        frameData);

                insertRequest(ctx, parsedRows);

                waitingForInsert = true;

                if (waitingForInsert)
                    break; //OK, we sent out an insert. We'll wait for it to come back before sending another.
            }
        } catch (Throwable t) {
            failLoadData(t);
        } finally {
            ReferenceCountUtil.release(nextDecodedFrame);
        }
    }

    if (waitingForInsert) {
        pauseInput(ctx);
        return;
    }

    boolean loadDataIsFinished = decodedEOF || (encounteredError != null);

    if (loadDataIsFinished) {
        sendResponseAndRemove(ctx);
    } else {
        //not waiting for input, haven't seen input EOF or thrown an exception, must need more input data.
        resumeInput(ctx);
    }

}

From source file:com.torodb.mongowp.bson.netty.NettyBsonLowLevelReader.java

License:Apache License

public BsonValue<?> readArrayEntry(@Loose @ModifiesIndexes ByteBuf byteBuf) throws NettyBsonReaderException {
    BsonType bsonType = ParsingTools.getBsonType(byteBuf.readByte());
    stringReader.skipCString(byteBuf);//from  w w  w  .ja  va 2  s  .  c o m
    switch (bsonType) {
    case ARRAY:
        return readArray(byteBuf);
    case BINARY:
        return readBinary(byteBuf);
    case DATETIME:
        return readDateTime(byteBuf);
    case DB_POINTER:
        return readDbPointer(byteBuf);
    case DECIMAL128:
        return readDecimal128(byteBuf);
    case DEPRECATED:
        return readDeprecated(byteBuf);
    case DOCUMENT:
        return readDocument(byteBuf);
    case DOUBLE:
        return readDouble(byteBuf);
    case BOOLEAN:
        return readBoolean(byteBuf);
    case INT32:
        return readInt32(byteBuf);
    case INT64:
        return readInt64(byteBuf);
    case JAVA_SCRIPT:
        return readJavaScript(byteBuf);
    case JAVA_SCRIPT_WITH_SCOPE:
        return readJavaScriptWithScope(byteBuf);
    case MAX:
        return readMax(byteBuf);
    case MIN:
        return readMin(byteBuf);
    case NULL:
        return readNull(byteBuf);
    case OBJECT_ID:
        return readObjectId(byteBuf);
    case REGEX:
        return readRegex(byteBuf);
    case STRING:
        return readString(byteBuf);
    case TIMESTAMP:
        return readTimestamp(byteBuf);
    case UNDEFINED:
        return readUndefined(byteBuf);
    default:
        throw new NettyBsonReaderException("Unexpected bson type " + bsonType);
    }
}