Example usage for io.netty.buffer ByteBuf getByte

Introduction

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

Prototype

public abstract byte getByte(int index);

Source Link

Document

Gets a byte at the specified absolute index in this buffer.

Usage

From source file:com.talent.mysql.packet.response.HandshakePacket.java

License:Open Source License

@Override
public HandshakePacket decodeBody(ByteBuf byteBuf, MysqlHeader mysqlHeader) throws DecodeException {
    this.setMysqlHeader(mysqlHeader);
    int _index = byteBuf.readerIndex();
    int index = _index;

    protocolVersion = byteBuf.getByte(index++);

    int len = 0;//from   www  .  j  av a  2 s . c o m
    while (byteBuf.getByte(index + len) != 0) {
        len++;
    }
    versionInfo = new byte[len];
    byteBuf.getBytes(index, versionInfo, 0, len);
    index += len;
    index++;

    threadId = byteBuf.getInt(index);
    index += 4;

    encrypt1 = new byte[8];
    byteBuf.getBytes(index, encrypt1, 0, 8);
    index += 8;

    fix1 = byteBuf.getByte(index++);

    serverProp1 = new byte[2];
    byteBuf.getBytes(index, serverProp1, 0, 2);
    index += 2;

    charset = byteBuf.getByte(index++);

    serverStatus = new byte[2];
    byteBuf.getBytes(index, serverStatus, 0, 2);
    index += 2;

    serverProp2 = new byte[2];
    byteBuf.getBytes(index, serverProp2, 0, 2);
    index += 2;

    fix2 = byteBuf.getByte(index++);

    //      byte10 = new byte[10];
    //      byteBuf.getBytes(index, byte10, 0, 10);
    index += 10;

    len = 0;
    while (byteBuf.getByte(index + len) != 0) {
        len++;
    }
    encrypt2 = new byte[len];
    byteBuf.getBytes(index, encrypt2, 0, len);
    index += len;
    index++;

    len = 0;
    while (byteBuf.getByte(index + len) != 0) {
        len++;
    }
    authPluginName = new byte[len];
    byteBuf.getBytes(index, authPluginName, 0, len);
    index += len;
    index++;

    byteBuf.readerIndex(index);
    return this;
}

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From source file:com.talent.nio.utils.ByteUtils.java

License:Open Source License

/**
 * //  w  w  w .j av  a  2  s  . com
 * @param buffer
 * @return
 * @throws IOException
 */
public static List<String> toLinesList(ByteBuf buffer) throws IOException {
    List<String> retList = new ArrayList<String>(20);

    int lastPosition = 0;
    int byteCountInOneLine = 0; // 

    byte lastByte = 0; // 
    int length = buffer.capacity();
    for (int i = 0; i < length; i++) {
        byte b = buffer.getByte(i);// .get();
        boolean isLastByte = (length - 1 == i); // ??
        byteCountInOneLine++;

        if (b == '\n') {
            if ((i > 0 && lastByte == '\r')) {
                if (byteCountInOneLine == 2) // ?????
                {
                    retList.add("\r\n"); // 
                } else {
                    byte[] bs1 = new byte[byteCountInOneLine];
                    buffer.getBytes(lastPosition, bs1);
                    String line1 = new String(bs1, "utf-8");
                    retList.add(line1);
                }
            } else {
                if (byteCountInOneLine == 1) // ?????
                {
                    retList.add("\n"); // 
                } else {
                    byte[] bs1 = new byte[byteCountInOneLine];
                    buffer.getBytes(lastPosition, bs1);
                    String line1 = new String(bs1, "utf-8");
                    retList.add(line1);
                }
            }

            byteCountInOneLine = 0;
            lastPosition = i + 1;
        } else if (isLastByte) {
            byte[] bs1 = new byte[byteCountInOneLine];
            buffer.getBytes(lastPosition, bs1);
            String line1 = new String(bs1, "utf-8");
            retList.add(line1);
        }

        lastByte = b;
    }
    return retList;
}

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

License:Open Source License

@Test
public void testProjection_Identity() throws Exception {
    MyBinaryResultRow fullProj = origRow.projection(new int[] { 0, 1, 2, 3, 4 });

    //check that the sizes are the same.
    assertEquals(origRow.size(), fullProj.size());

    ByteBuf marshallProj = Unpooled.buffer().order(ByteOrder.LITTLE_ENDIAN);
    fullProj.marshallMessage(marshallProj);
    //check that the raw bytes are byte for byte equal.
    for (int i = 0; i < rawRow.readableBytes(); i++) {
        assertEquals("byte at index=" + i, rawRow.getByte(i), marshallProj.getByte(i));
    }/*from   www  .j  av a  2s  . c om*/

    //check that all the slices are byte for byte equal.
    for (int i = 0; i < origRow.size(); i++) {
        assertEquals(origRow.getSlice(i), fullProj.getSlice(i));
    }

    //check that the decoded objects are equal
    for (int i = 0; i < origRow.size(); i++) {
        assertEquals(origRow.getValue(i), fullProj.getValue(i));
    }

}

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From source file:com.tesora.dve.db.mysql.portal.protocol.MSPProtocolDecoder.java

License:Open Source License

private MSPMessage buildMessage(final ByteBuf payload, final byte sequenceId) {
    final byte messageType = payload.getByte(0); //peek at the first byte in the payload to determine message type.
    try {/*  w  w  w. ja va2s.  c  o  m*/
        return this.messageExecutor[messageType].newPrototype(payload);
    } catch (final Exception e) {
        return new MSPUnknown(messageType, payload);
    }
}

---

From source file:com.tesora.dve.db.mysql.portal.protocol.MSPServerGreetingRequestMessage.java

License:Open Source License

public static void write(ChannelHandlerContext ctx, int connectionId, String salt, int serverCapabilities,
        String serverVersion, byte serverCharSet, String pluginData) {
    ByteBuf out = ctx.channel().alloc().heapBuffer(50).order(ByteOrder.LITTLE_ENDIAN);

    String scrambleBuffer1st = salt.substring(0, 8);
    String scrambleBuffer2nd = salt.substring(8) + '\0';
    Integer scrambleBufferSize = scrambleBuffer1st.length() + scrambleBuffer2nd.length();

    ByteBuf serverCapabilitiesBuf = ctx.channel().alloc().heapBuffer(4).order(ByteOrder.LITTLE_ENDIAN);
    try {// w  w w .  j a va  2s . c  o m
        serverCapabilitiesBuf.writeInt(serverCapabilities);
        out.writeMedium(0);
        out.writeByte(0);
        out.writeByte(MYSQL_PROTOCOL_VERSION);

        out.writeBytes(serverVersion.getBytes());
        out.writeZero(1);
        out.writeInt(connectionId);
        out.writeBytes(scrambleBuffer1st.getBytes()); // Salt
        out.writeZero(1);
        out.writeByte(serverCapabilitiesBuf.getByte(0));
        out.writeByte(serverCapabilitiesBuf.getByte(1));

        out.writeByte(serverCharSet);
        out.writeShort(MyProtocolDefs.SERVER_STATUS_AUTOCOMMIT);
        out.writeByte(serverCapabilitiesBuf.getByte(2));
        out.writeByte(serverCapabilitiesBuf.getByte(3));
        out.writeByte(scrambleBufferSize.byteValue());
        out.writeZero(10); // write 10 unused bytes
        out.writeBytes(scrambleBuffer2nd.getBytes()); // Salt

        out.writeBytes(pluginData.getBytes()); // payload
        out.writeZero(1);

        out.setMedium(0, out.writerIndex() - 4);

        ctx.channel().writeAndFlush(out);
    } finally {
        serverCapabilitiesBuf.release();
    }
}

---

From source file:com.tesora.dve.db.mysql.portal.protocol.MysqlClientAuthenticationHandler.java

License:Open Source License

private void processAcknowlegement(ChannelHandlerContext ctx, ByteBuf payload) throws Exception {
    byte fieldCount = payload.getByte(payload.readerIndex());
    if (fieldCount == MyErrorResponse.ERRORPKT_FIELD_COUNT) {
        processErrorPacket(ctx, payload);
    } else {/*from   w w w  . j  a  va  2  s.  c  om*/
        ctx.pipeline().remove(this);

        enterState(AuthenticationState.AUTHENTICATED);
    }
}

---

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  a2 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.sql.LargeMaxPktTest.java

License:Open Source License

@Test
public void testComQueryMessageContinuationOverlap() throws Exception {
    int defaultMaxPacket = 0xFFFFFF;
    int payloadSize = (defaultMaxPacket * 4) + (4 * 40); //four full packets and a little change, divisible by 4.
    ByteBuf source = Unpooled.buffer(payloadSize, payloadSize);
    Random rand = new Random(239873L);
    while (source.isWritable())
        source.writeInt(rand.nextInt());
    Assert.assertEquals(source.writableBytes(), 0, "Oops, I intended to fill up the source buffer");

    ByteBuf dest = Unpooled.buffer(payloadSize);

    MSPComQueryRequestMessage outboundMessage = MSPComQueryRequestMessage.newMessage(source.array());
    Packet.encodeFullMessage((byte) 0, outboundMessage, dest);

    int lengthOfNonUserdata = 5 + 4 + 4 + 4 + 4;
    Assert.assertEquals(dest.readableBytes(), payloadSize + lengthOfNonUserdata,
            "Number of bytes in destination buffer is wrong");

    Assert.assertEquals(dest.getUnsignedMedium(0), defaultMaxPacket, "First length should be maximum");
    Assert.assertEquals(dest.getByte(3), (byte) 0, "First sequenceID should be zero");
    Assert.assertEquals(dest.getByte(4), (byte) MSPComQueryRequestMessage.TYPE_IDENTIFIER,
            "First byte of payload should be MSPComQueryRequestMessage.TYPE_IDENTIFIER");

    ByteBuf sliceFirstPayload = dest.slice(5, (0xFFFFFF - 1));
    Assert.assertEquals(sliceFirstPayload, source.slice(0, 0xFFFFFF - 1));

}

---

From source file:com.tesora.dve.sql.LargeMaxPktTest.java

License:Open Source License

@Test
public void testComQueryMessageContinuationExact() throws Exception {
    int defaultMaxPacket = 0xFFFFFF;
    int payloadSize = (defaultMaxPacket * 4); //four full packets exactly, requires an empty trailing packet.
    ByteBuf source = Unpooled.buffer(payloadSize, payloadSize);
    Random rand = new Random(239873L);
    while (source.isWritable())
        source.writeInt(rand.nextInt());
    Assert.assertEquals(source.writableBytes(), 0, "Oops, I intended to fill up the source buffer");

    ByteBuf dest = Unpooled.buffer(payloadSize);

    MSPComQueryRequestMessage outboundMessage = MSPComQueryRequestMessage.newMessage(source.array());
    Packet.encodeFullMessage((byte) 0, outboundMessage, dest);

    int lengthOfNonUserdata = 5 + 4 + 4 + 4 + 4;//last packet has zero length payload
    Assert.assertEquals(dest.readableBytes(), payloadSize + lengthOfNonUserdata,
            "Number of bytes in destination buffer is wrong");

    Assert.assertEquals(dest.getUnsignedMedium(0), defaultMaxPacket, "First length should be maximum");
    Assert.assertEquals(dest.getByte(3), (byte) 0, "First sequenceID should be zero");
    Assert.assertEquals(dest.getByte(4), (byte) MSPComQueryRequestMessage.TYPE_IDENTIFIER,
            "First byte of payload should be MSPComQueryRequestMessage.TYPE_IDENTIFIER");

    ByteBuf sliceFirstPayload = dest.slice(5, (0xFFFFFF - 1));
    Assert.assertEquals(sliceFirstPayload, source.slice(0, 0xFFFFFF - 1));

}

---

From source file:com.twitter.http2.HttpCodecUtil.java

License:Apache License

/**
 * Reads a big-endian unsigned short integer from the buffer.
 *//*from www  . j  a  v a 2 s  .  com*/
static int getUnsignedShort(ByteBuf buf, int offset) {
    return (buf.getByte(offset) & 0xFF) << 8 | buf.getByte(offset + 1) & 0xFF;
}

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