Example usage for io.netty.buffer ByteBuf getByte

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

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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:org.hornetq.tests.integration.transports.netty.HornetQFrameDecoder2Test.java

License:Apache License

@Test
public void testExtremeFragmentation() throws Exception {
    final EmbeddedChannel decoder = new EmbeddedChannel(new HornetQFrameDecoder2());

    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 0 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 4 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 5 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 6 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 7 }));
    Assert.assertNull(decoder.readInbound());
    decoder.writeInbound(Unpooled.wrappedBuffer(new byte[] { 8 }));

    ByteBuf frame = (ByteBuf) decoder.readInbound();
    Assert.assertEquals(4, frame.readerIndex());
    Assert.assertEquals(4, frame.readableBytes());
    Assert.assertEquals(5, frame.getByte(4));
    Assert.assertEquals(6, frame.getByte(5));
    Assert.assertEquals(7, frame.getByte(6));
    Assert.assertEquals(8, frame.getByte(7));
    frame.release();//from w  w  w  . j av  a  2 s.  c  o  m
}

From source file:org.jfxvnc.net.rfb.codec.decoder.FramebufferUpdateRectDecoder.java

License:Apache License

@Override
public boolean decode(ChannelHandlerContext ctx, ByteBuf m, List<Object> out) throws Exception {

    if (state == State.INIT) {
        logger.debug("init readable {} bytes", m.readableBytes());
        if (!m.isReadable()) {
            return false;
        }/*from w  w  w.  j  ava 2s.c  o  m*/
        if (m.getByte(0) != ServerEvent.FRAMEBUFFER_UPDATE.getType()) {
            logger.error("no FBU type!!! {}", m.getByte(0));
            ctx.pipeline().fireChannelReadComplete();
            return false;
        }
        if (!m.isReadable(4)) {
            return false;
        }
        m.skipBytes(2); // padding
        numberRects = m.readUnsignedShort();
        currentRect = 0;
        logger.debug("number of rectangles: {}", numberRects);
        if (numberRects < 1) {
            return true;
        }
        state = State.NEW_RECT;
    }

    if (state == State.NEW_RECT) {
        if (!readRect(ctx, m, out)) {
            return false;
        }
        state = State.READ_RECT;
    }

    FrameRectDecoder dec = frameRectDecoder.get(rect.getEncoding());
    if (dec == null) {
        throw new ProtocolException("Encoding not supported: " + rect.getEncoding());
    }
    dec.setRect(rect);
    if (!dec.decode(ctx, m, out)) {
        return false;
    }

    if (currentRect == numberRects) {
        state = State.INIT;
        ctx.pipeline().fireUserEventTriggered(ProtocolState.FBU_REQUEST);
        return true;
    }

    if (!readRect(ctx, m, out)) {
        state = State.NEW_RECT;
    }
    return false;
}

From source file:org.jfxvnc.net.rfb.codec.decoder.rect.CursorRectDecoder.java

License:Apache License

@Override
protected void sendRect(List<Object> out) {
    int i = 0;//  w  w w.  ja v a2s . co m
    ByteBuf pixels = aloc.buffer(capacity - bitMaskLength);
    while (pixels.isWritable(4)) {
        pixels.writeInt(framebuffer.getUnsignedByte(i * 4 + redPos) << pixelFormat.getRedShift()
                | framebuffer.getUnsignedByte(i * 4 + 1) << pixelFormat.getGreenShift()
                | framebuffer.getUnsignedByte(i * 4 + bluePos) << pixelFormat.getBlueShift() | 0xff000000);
        i++;
    }

    if (bitMaskLength > 0) {
        ByteBuf bitmask = aloc.buffer(bitMaskLength);
        framebuffer.getBytes(capacity - bitMaskLength, bitmask);
        // remove transparent pixels
        int maskBytesPerRow = Math.floorDiv((rect.getWidth() + 7), 8);
        IntStream.range(0, rect.getHeight())
                .forEach(y -> IntStream.range(0, rect.getWidth())
                        .filter(x -> (bitmask.getByte((y * maskBytesPerRow) + Math.floorDiv(x, 8))
                                & (1 << 7 - Math.floorMod(x, 8))) < 1)
                        .forEach(x -> pixels.setInt((y * rect.getWidth() + x) * 4, 0)));
        bitmask.release();
    }
    out.add(new CursorImageRect(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight(), pixels));
}

From source file:org.onosproject.ovsdb.lib.utils.JsonRpcReaderUtil.java

License:Apache License

/**
 * Decode the bytes to Json object./*ww  w .  j a  va2  s.co m*/
 * @param in input of bytes
 * @param out ouput of Json object list
 * @param jrContext context for the last decoding process
 */
public static void readToJsonNode(ByteBuf in, List<Object> out, JsonReadContext jrContext) throws Exception {
    int lastReadBytes = jrContext.getLastReadBytes();
    if (lastReadBytes == 0) {
        if (in.readableBytes() < 4) {
            return;
        }
        checkEncoding(in);
    }

    int i = lastReadBytes + in.readerIndex();
    Stack<Byte> bufStack = jrContext.getBufStack();
    for (; i < in.writerIndex(); i++) {
        byte b = in.getByte(i);
        switch (b) {
        case '{':
            if (!isDoubleQuote(bufStack)) {
                bufStack.push(b);
                jrContext.setStartMatch(true);
            }
            break;
        case '}':
            if (!isDoubleQuote(bufStack)) {
                bufStack.pop();
            }
            break;
        case '"':
            if (in.getByte(i - 1) != '\\') {
                if (!bufStack.isEmpty() && bufStack.peek() != '"') {
                    bufStack.push(b);
                } else {
                    bufStack.pop();
                }
            }
            break;
        default:
            break;
        }

        if (jrContext.isStartMatch() && bufStack.isEmpty()) {
            ByteBuf buf = in.readSlice(i - in.readerIndex() + 1);
            JsonParser jf = new MappingJsonFactory().createParser(new ByteBufInputStream(buf));
            JsonNode jsonNode = jf.readValueAsTree();
            out.add(jsonNode);
            lastReadBytes = 0;
            jrContext.setLastReadBytes(lastReadBytes);
            break;
        }
    }

    if (i >= in.writerIndex()) {
        lastReadBytes = in.readableBytes();
        jrContext.setLastReadBytes(lastReadBytes);
    }
}

From source file:org.onosproject.ovsdb.lib.utils.JsonRpcReaderUtil.java

License:Apache License

/**
 * Filter the invalid characters before decoding.
 * @param in input of bytes/*from ww w.  ja  va  2  s.co  m*/
 * @param lastReadBytes the bytes for last decoding incomplete record
 */
private static void fliterCharaters(ByteBuf in) {
    while (in.isReadable()) {
        int ch = in.getByte(in.readerIndex());
        if ((ch != ' ') && (ch != '\n') && (ch != '\t') && (ch != '\r')) {
            break;
        } else {
            in.readByte();
        }
    }
}

From source file:org.onosproject.ovsdb.rfc.utils.JsonRpcReaderUtil.java

License:Apache License

/**
 * Decode the bytes to Json object.//from w  w w .ja  va  2 s  .c o m
 * @param in input of bytes
 * @param out ouput of Json object list
 * @param jrContext context for the last decoding process
 * @throws IOException IOException
 * @throws JsonParseException JsonParseException
 */
public static void readToJsonNode(ByteBuf in, List<Object> out, JsonReadContext jrContext) throws IOException {
    int lastReadBytes = jrContext.getLastReadBytes();
    if (lastReadBytes == 0) {
        if (in.readableBytes() < 4) {
            return;
        }
        checkEncoding(in);
    }

    int i = lastReadBytes + in.readerIndex();
    Stack<Byte> bufStack = jrContext.getBufStack();
    for (; i < in.writerIndex(); i++) {
        byte b = in.getByte(i);
        switch (b) {
        case '{':
            if (!isDoubleQuote(bufStack)) {
                bufStack.push(b);
                jrContext.setStartMatch(true);
            }
            break;
        case '}':
            if (!isDoubleQuote(bufStack)) {
                bufStack.pop();
            }
            break;
        case '"':
            if (in.getByte(i - 1) != '\\') {
                if (!bufStack.isEmpty() && bufStack.peek() != '"') {
                    bufStack.push(b);
                } else {
                    bufStack.pop();
                }
            }
            break;
        default:
            break;
        }

        if (jrContext.isStartMatch() && bufStack.isEmpty()) {
            ByteBuf buf = in.readSlice(i - in.readerIndex() + 1);
            JsonParser jf = new MappingJsonFactory().createParser(new ByteBufInputStream(buf));
            JsonNode jsonNode = jf.readValueAsTree();
            out.add(jsonNode);
            lastReadBytes = 0;
            jrContext.setLastReadBytes(lastReadBytes);
            break;
        }
    }

    if (i >= in.writerIndex()) {
        lastReadBytes = in.readableBytes();
        jrContext.setLastReadBytes(lastReadBytes);
    }
}

From source file:org.opendaylight.controller.netconf.util.handler.NetconfEOMAggregator.java

License:Open Source License

private int indexOfSequence(ByteBuf in, byte[] sequence) {
    int index = -1;
    for (int i = 0; i < in.readableBytes() - sequence.length + 1; i++) {
        if (in.getByte(i) == sequence[0]) {
            index = i;/* ww  w  . j  a va2s  .  c o  m*/
            for (int j = 1; j < sequence.length; j++) {
                if (in.getByte(i + j) != sequence[j]) {
                    index = -1;
                    break;
                }
            }
            if (index != -1) {
                return index;
            }
        }
    }
    return index;
}

From source file:org.opendaylight.groupbasedpolicy.jsonrpc.JsonRpcDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buf, List<Object> out) throws Exception {

    logger.trace("readable bytes {}, records read {}, incomplete record bytes {}", buf.readableBytes(),
            recordsRead, lastRecordBytes);

    if (lastRecordBytes == 0) {
        if (buf.readableBytes() < 4) {
            return; //wait for more data
        }//from   www  .  ja v a2  s  . c om

        skipSpaces(buf);

        byte[] buff = new byte[4];
        buf.getBytes(buf.readerIndex(), buff);
        ByteSourceJsonBootstrapper strapper = new ByteSourceJsonBootstrapper(jacksonIOContext, buff, 0, 4);
        JsonEncoding jsonEncoding = strapper.detectEncoding();
        if (!JsonEncoding.UTF8.equals(jsonEncoding)) {
            throw new InvalidEncodingException(jsonEncoding.getJavaName(), "currently only UTF-8 is supported");
        }
    }

    int i = lastRecordBytes + buf.readerIndex();

    for (; i < buf.writerIndex(); i++) {
        switch (buf.getByte(i)) {
        case '{':
            if (!inS)
                leftCurlies++;
            break;
        case '}':
            if (!inS)
                rightCurlies++;
            break;
        case '"': {
            if (buf.getByte(i - 1) != '\\')
                inS = !inS;
            break;
        }
        default:
            break;
        }

        if (leftCurlies != 0 && leftCurlies == rightCurlies && !inS) {
            ByteBuf slice = buf.readSlice(1 + i - buf.readerIndex());
            JsonParser jp = jacksonJsonFactory.createParser(new ByteBufInputStream(slice));
            JsonNode root = jp.readValueAsTree();
            out.add(root);
            leftCurlies = rightCurlies = lastRecordBytes = 0;
            recordsRead++;
            break;
        }

        if (i - buf.readerIndex() >= maxFrameLength) {
            fail(ctx, i - buf.readerIndex());
        }
    }

    // end of stream, save the incomplete record index to avoid reexamining the whole on next run
    if (i >= buf.writerIndex()) {
        lastRecordBytes = buf.readableBytes();
        return;
    }
}

From source file:org.opendaylight.groupbasedpolicy.jsonrpc.JsonRpcDecoder.java

License:Open Source License

private static void skipSpaces(ByteBuf b) throws IOException {
    while (b.isReadable()) {
        int ch = b.getByte(b.readerIndex()) & 0xFF;
        if (!(ch == ' ' || ch == '\r' || ch == '\n' || ch == '\t')) {
            return;
        }/*w  w  w  .j a va  2 s  . co  m*/
        b.readByte(); //move the read index
    }
}

From source file:org.opendaylight.openflowjava.protocol.impl.clients.SimpleClientFramer.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext chc, ByteBuf bb, List<Object> list) throws Exception {
    if (bb.readableBytes() < LENGTH_OF_HEADER) {
        LOGGER.debug("skipping bb - too few data for header: " + bb.readableBytes());
        return;/*  w ww  . j a v  a 2s  .c om*/
    }

    int length = bb.getUnsignedShort(LENGTH_INDEX_IN_HEADER);
    if (bb.readableBytes() < length) {
        LOGGER.debug("skipping bb - too few data for msg: " + bb.readableBytes() + " < " + length);
        return;
    }
    LOGGER.debug("OF Protocol message received, type:{}", bb.getByte(1));

    ByteBuf messageBuffer = bb.slice(bb.readerIndex(), length);
    list.add(messageBuffer);
    messageBuffer.retain();
    bb.skipBytes(length);
}