Example usage for io.netty.buffer ByteBuf slice

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

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Introduction

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

Prototype

public abstract ByteBuf slice(int index, int length);

Source Link

Document

Returns a slice of this buffer's sub-region.

Usage

From source file:org.graylog.plugins.netflow.utils.ByteBufUtils.java

License:Apache License

public static InetAddress getInetAddress(final ByteBuf buf, final int offset, final int length) {
    final ByteBuf buffer = buf.slice(offset, length);

    final byte[] data = new byte[length];
    for (int i = 1; i <= length; i++) {
        data[i - 1] = (byte) buffer.readUnsignedByte();
    }/*from   ww  w.j a  va  2 s .co m*/

    InetAddress address;
    try {
        address = InetAddress.getByAddress(data);
    } catch (UnknownHostException e) {
        address = DEFAULT_INET_ADDRESS;
    }

    return address;
}

From source file:org.graylog2.inputs.syslog.tcp.SyslogOctetCountFrameDecoder.java

License:Open Source License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) throws Exception {
    final int frameSizeValueLength = findFrameSizeValueLength(buffer);

    // We have not found the frame length value byte size yet.
    if (frameSizeValueLength <= 0) {
        return;//from w w  w. j  av  a2s . c om
    }

    // Convert the frame length value bytes into an integer without mutating the buffer reader index.
    final String lengthString = buffer.slice(buffer.readerIndex(), frameSizeValueLength)
            .toString(StandardCharsets.UTF_8);
    final int length = Integer.parseInt(lengthString);
    final int skipLength = frameSizeValueLength + 1; // Frame length value bytes and the whitespace that follows it.

    // We have to take the skipped bytes (frame size value length + whitespace) into account when checking if
    // the buffer has enough data to read the complete message.
    if (buffer.readableBytes() - skipLength < length) {
        // We cannot read the complete frame yet.
        return;
    } else {
        // Skip the frame length value bytes and the whitespace that follows it.
        buffer.skipBytes(skipLength);
    }

    final ByteBuf frame = buffer.readRetainedSlice(length);
    out.add(frame);
}

From source file:org.graylog2.inputs.transports.netty.LenientDelimiterBasedFrameDecoder.java

License:Open Source License

/**
 * Creates a new instance./* w  ww . j  a v a  2  s.co m*/
 *
 * @param maxFrameLength the maximum length of the decoded frame.
 *                       A {@link TooLongFrameException} is thrown if
 *                       the length of the frame exceeds this value.
 * @param stripDelimiter whether the decoded frame should strip out the
 *                       delimiter or not
 * @param failFast       If <tt>true</tt>, a {@link TooLongFrameException} is
 *                       thrown as soon as the decoder notices the length of the
 *                       frame will exceed <tt>maxFrameLength</tt> regardless of
 *                       whether the entire frame has been read.
 *                       If <tt>false</tt>, a {@link TooLongFrameException} is
 *                       thrown after the entire frame that exceeds
 *                       <tt>maxFrameLength</tt> has been read.
 * @param delimiter      the delimiter
 */
public LenientDelimiterBasedFrameDecoder(int maxFrameLength, boolean stripDelimiter, boolean failFast,
        ByteBuf delimiter) {
    this(maxFrameLength, stripDelimiter, failFast, true,
            delimiter.slice(delimiter.readerIndex(), delimiter.readableBytes()));
}

From source file:org.graylog2.inputs.transports.netty.LenientDelimiterBasedFrameDecoder.java

License:Open Source License

/**
 * Creates a new instance.// www .  ja va  2  s.co  m
 *
 * @param maxFrameLength               the maximum length of the decoded frame.
 *                                     A {@link TooLongFrameException} is thrown if
 *                                     the length of the frame exceeds this value.
 * @param stripDelimiter               whether the decoded frame should strip out the
 *                                     delimiter or not
 * @param failFast                     If <tt>true</tt>, a {@link TooLongFrameException} is
 *                                     thrown as soon as the decoder notices the length of the
 *                                     frame will exceed <tt>maxFrameLength</tt> regardless of
 *                                     whether the entire frame has been read.
 *                                     If <tt>false</tt>, a {@link TooLongFrameException} is
 *                                     thrown after the entire frame that exceeds
 *                                     <tt>maxFrameLength</tt> has been read.
 * @param emitLastLineWithoutDelimiter emit the last line even if it doesn't
 *                                     end with the delimiter
 * @param delimiters                   the delimiters
 */
public LenientDelimiterBasedFrameDecoder(int maxFrameLength, boolean stripDelimiter, boolean failFast,
        boolean emitLastLineWithoutDelimiter, ByteBuf... delimiters) {
    validateMaxFrameLength(maxFrameLength);
    if (delimiters == null) {
        throw new NullPointerException("delimiters");
    }
    if (delimiters.length == 0) {
        throw new IllegalArgumentException("empty delimiters");
    }

    if (isLineBased(delimiters) && !isSubclass()) {
        lineBasedDecoder = new LenientLineBasedFrameDecoder(maxFrameLength, stripDelimiter, failFast,
                emitLastLineWithoutDelimiter);
        this.delimiters = null;
    } else {
        this.delimiters = new ByteBuf[delimiters.length];
        for (int i = 0; i < delimiters.length; i++) {
            ByteBuf d = delimiters[i];
            validateDelimiter(d);
            this.delimiters[i] = d.slice(d.readerIndex(), d.readableBytes());
        }
        lineBasedDecoder = null;
    }
    this.maxFrameLength = maxFrameLength;
    this.stripDelimiter = stripDelimiter;
    this.failFast = failFast;
    this.emitLastLineWithoutDelimiter = emitLastLineWithoutDelimiter;
}

From source file:org.helios.octo.util.NettyUtil.java

License:Open Source License

public static String formatBuffer(ByteBuf buffer, int maxLength) {
    if (buffer == null || buffer.readableBytes() < 1)
        return "";
    return formatBuffer(
            buffer.slice(0, buffer.readableBytes() > maxLength ? maxLength : buffer.readableBytes()));

}

From source file:org.legacy.network.session.impl.OnDemandSession.java

License:Open Source License

public void processFileQueue() {
    OnDemandRequestMessage request;//from   w  w  w. ja  va 2 s .com

    synchronized (fileQueue) {
        request = fileQueue.pop();
        if (fileQueue.isEmpty()) {
            idle = true;
        } else {
            filter.addPendingSession(this);
            idle = false;
        }
    }

    if (request != null) {
        int type = request.getType();
        int file = request.getFile();
        Cache cache = Legacy.getCache();
        ByteBuf buffer;
        try {
            if (type == 0xFF && file == 0xFF) {
                buffer = Unpooled.wrappedBuffer(Legacy.getCache().getChecksumtable());
            } else {
                buffer = Unpooled.wrappedBuffer(cache.getStore().read(type, file));
                if (type != 255)
                    buffer = buffer.slice(0, buffer.readableBytes() - 2);
            }
            channel.write(new OnDemandResponseMessage(request.isPriority(), type, file, buffer));
        } catch (IOException ex) {
            LegacyLogger.fireErrorMessage(this, "Failed to service file request " + type + ", " + file + ".",
                    ex);
        }
    }
}

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;/*from  www. j  av  a 2 s.c o m*/
    }

    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);
}

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

License:Open Source License

@Override
protected void decode(ChannelHandlerContext chc, DatagramPacket msg, List<Object> list) throws Exception {
    ByteBuf bb = msg.content();
    if (bb.readableBytes() < LENGTH_OF_HEADER) {
        LOG.debug("skipping bb - too few data for header: {}", bb.readableBytes());
        return;/*  www. j  av a  2 s .  c  o  m*/
    }

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

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

From source file:org.opendaylight.openflowjava.protocol.impl.core.OFFrameDecoder.java

License:Open Source License

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

    int length = bb.getUnsignedShort(bb.readerIndex() + LENGTH_INDEX_IN_HEADER);
    LOGGER.debug("length of actual message: {}", length);

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

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

From source file:org.opendaylight.protocol.pcep.ietf.PCEPObjectParserTest.java

License:Open Source License

@Test
public void testOpenObjectWithTLV() throws PCEPDeserializerException, IOException {
    try (SyncOptimizationsActivator a = new SyncOptimizationsActivator()) {
        a.start(this.ctx);

        final SyncOptimizationsOpenObjectParser parser = new SyncOptimizationsOpenObjectParser(
                this.ctx.getTlvHandlerRegistry(), this.ctx.getVendorInformationTlvRegistry());
        final ByteBuf result = Unpooled
                .wrappedBuffer(ByteArray.fileToBytes("src/test/resources/PCEPOpenObject1.bin"));

        final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.OpenBuilder builder = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.OpenBuilder();
        builder.setProcessingRule(false);
        builder.setIgnore(false);//  w ww.j  a  v  a 2 s  .c  om
        builder.setVersion(new ProtocolVersion((short) 1));
        builder.setKeepalive((short) 30);
        builder.setDeadTimer((short) 120);
        builder.setSessionId((short) 1);

        final Stateful tlv1 = new StatefulBuilder().setLspUpdateCapability(Boolean.TRUE)
                .addAugmentation(Stateful1.class, new Stateful1Builder().build()).build();

        final Tlvs1Builder statBuilder = new Tlvs1Builder();
        statBuilder.setStateful(tlv1);

        final Tlvs3Builder syncOptBuilder = new Tlvs3Builder();
        syncOptBuilder.setLspDbVersion(
                new LspDbVersionBuilder().setLspDbVersionValue(new BigInteger(DB_VERSION)).build());
        syncOptBuilder
                .setSpeakerEntityId(new SpeakerEntityIdBuilder().setSpeakerEntityIdValue(SPEAKER_ID).build());

        builder.setTlvs(
                new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.open.object.open.TlvsBuilder()
                        .addAugmentation(Tlvs1.class, statBuilder.build())
                        .addAugmentation(Tlvs3.class, syncOptBuilder.build()).build());

        assertEquals(builder.build(), parser.parseObject(new ObjectHeaderImpl(false, false),
                result.slice(4, result.readableBytes() - 4)));
        final ByteBuf buf = Unpooled.buffer();
        parser.serializeObject(builder.build(), buf);
        assertArrayEquals(result.array(), ByteArray.getAllBytes(buf));
    }
}