Example usage for io.netty.buffer ByteBuf isReadable

Introduction

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

Prototype

public abstract boolean isReadable();

Source Link

Document

Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0 .

Usage

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.NodeAttributesParser.java

License:Open Source License

private static void parseTopologyId(final List<TopologyIdentifier> topologyMembership, final ByteBuf value) {
    while (value.isReadable()) {
        final TopologyIdentifier topId = new TopologyIdentifier(
                value.readUnsignedShort() & TlvUtil.TOPOLOGY_ID_OFFSET);
        topologyMembership.add(topId);/*from   w  ww.  j a  v  a  2  s.  com*/
        LOG.debug("Parsed Topology Identifier: {}", topId);
    }
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.PrefixAttributesParser.java

License:Open Source License

private static void parseRouteTags(final List<RouteTag> routeTags, final ByteBuf value) {
    while (value.isReadable()) {
        final RouteTag routeTag = new RouteTag(ByteArray.readBytes(value, ROUTE_TAG_LENGTH));
        routeTags.add(routeTag);//from www.  j  a v  a  2 s  . c  om
        LOG.debug("Parsed Route Tag: {}", routeTag);
    }
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.PrefixAttributesParser.java

License:Open Source License

private static void parseExtendedRouteTags(final List<ExtendedRouteTag> exRouteTags, final ByteBuf value) {
    while (value.isReadable()) {
        final ExtendedRouteTag exRouteTag = new ExtendedRouteTag(
                ByteArray.readBytes(value, EXTENDED_ROUTE_TAG_LENGTH));
        exRouteTags.add(exRouteTag);//from   w w  w.  j ava2 s .c  o m
        LOG.debug("Parsed Extended Route Tag: {}", exRouteTag);
    }
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.sr.BindingSidLabelParser.java

License:Open Source License

private static List<BindingSubTlvs> parseBindingSubTlvs(final ByteBuf buffer, final ProtocolId protocolId) {
    final List<BindingSubTlvs> subTlvs = new ArrayList<BindingSubTlvs>();
    while (buffer.isReadable()) {
        final int type = buffer.readUnsignedShort();
        final int length = buffer.readUnsignedShort();
        final ByteBuf slice = buffer.readSlice(length);
        final BindingSubTlvsBuilder builder = new BindingSubTlvsBuilder();
        parseSubTlv(type, slice, builder, protocolId);
        subTlvs.add(builder.build());/*from   www . j a  v  a2  s  . c  om*/
    }
    return subTlvs;
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.sr.RangeTlvParser.java

License:Open Source License

private static List<SubTlvs> parseRangeSubTlvs(final ByteBuf buffer, final ProtocolId protocolId) {
    final List<SubTlvs> subTlvs = new ArrayList<>();
    while (buffer.isReadable()) {
        final SubTlvsBuilder subTlv = new SubTlvsBuilder();
        RangeSubTlv subTlvCase = null;//from  w ww  . ja v a  2s  .  c  o m
        final int type = buffer.readUnsignedShort();
        final int length = buffer.readUnsignedShort();
        switch (type) {
        case PrefixAttributesParser.PREFIX_SID:
            subTlvCase = new PrefixSidTlvCaseBuilder(
                    SrPrefixAttributesParser.parseSrPrefix(buffer.readSlice(length), protocolId)).build();
            break;
        case PrefixAttributesParser.BINDING_SID:
            subTlvCase = new BindingSidTlvCaseBuilder(
                    BindingSidLabelParser.parseBindingSidLabel(buffer.readSlice(length), protocolId)).build();
            break;
        case SidLabelIndexParser.SID_TYPE:
            subTlvCase = new SidLabelTlvCaseBuilder().setSidLabelIndex(
                    SidLabelIndexParser.parseSidLabelIndex(Size.forValue(length), buffer.readSlice(length)))
                    .build();
            break;
        default:
            LOG.info("Unknown type of range sub-tlv: {}", type);
            buffer.skipBytes(length);
            continue;
        }
        subTlvs.add(subTlv.setRangeSubTlv(subTlvCase).build());
    }
    return subTlvs;
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.sr.SrLinkAttributesParser.java

License:Open Source License

public static AdjSidTlv parseAdjacencySegmentIdentifier(final ByteBuf buffer, final ProtocolId protocolId) {
    final Flags adjFlags;
    final Weight weight;
    final SidLabelIndex sidValue;
    if (buffer.isReadable()) {
        final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
        adjFlags = parseFlags(flags, protocolId);
        weight = new Weight(buffer.readUnsignedByte());
        buffer.skipBytes(RESERVED);// www .j  av  a2  s  .  c o m
        sidValue = SidLabelIndexParser.parseSidLabelIndex(Size.forValue(buffer.readableBytes()), buffer);
    } else {
        adjFlags = null;
        weight = null;
        sidValue = null;
    }
    return new AdjSidTlv() {
        @Override
        public Class<? extends DataContainer> getImplementedInterface() {
            return AdjSidTlv.class;
        }

        @Override
        public Weight getWeight() {
            return weight;
        }

        @Override
        public SidLabelIndex getSidLabelIndex() {
            return sidValue;
        }

        @Override
        public Flags getFlags() {
            return adjFlags;
        }
    };
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.sr.SrLinkAttributesParser.java

License:Open Source License

public static SrLanAdjIds parseLanAdjacencySegmentIdentifier(final ByteBuf buffer,
        final ProtocolId protocolId) {
    if (!buffer.isReadable()) {
        return new SrLanAdjIdsBuilder().build();
    }/*  w  w w .ja v  a  2 s .c  o m*/
    final SrLanAdjIdsBuilder srLanAdjIdBuilder = new SrLanAdjIdsBuilder();
    final BitArray flags = BitArray.valueOf(buffer, FLAGS_SIZE);
    srLanAdjIdBuilder.setFlags(parseFlags(flags, protocolId));
    srLanAdjIdBuilder.setWeight(new Weight(buffer.readUnsignedByte()));
    buffer.skipBytes(RESERVED);
    if (protocolId.equals(ProtocolId.IsisLevel1) || protocolId.equals(ProtocolId.IsisLevel2)) {
        srLanAdjIdBuilder
                .setIsoSystemId(new IsoSystemIdentifier(ByteArray.readBytes(buffer, ISO_SYSTEM_ID_SIZE)));
    } else if (protocolId.equals(ProtocolId.Ospf)) {
        srLanAdjIdBuilder.setNeighborId(Ipv4Util.addressForByteBuf(buffer));
    }
    // length determines a type of next field, which is used for parsing
    srLanAdjIdBuilder.setSidLabelIndex(
            SidLabelIndexParser.parseSidLabelIndex(Size.forValue(buffer.readableBytes()), buffer));
    return srLanAdjIdBuilder.build();
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.sr.SrNodeAttributesParser.java

License:Open Source License

public static SrAlgorithm parseSrAlgorithms(final ByteBuf buffer) {
    final SrAlgorithmBuilder builder = new SrAlgorithmBuilder();
    final List<Algorithm> algs = new ArrayList<>();
    while (buffer.isReadable()) {
        algs.add(Algorithm.forValue(buffer.readUnsignedByte()));
    }/*from  w  w w.  j a  va2  s . c om*/
    builder.setAlgorithms(algs);
    return builder.build();
}

From source file:org.opendaylight.protocol.bgp.linkstate.attribute.TeLspAttributesParser.java

License:Open Source License

public static LinkStateAttribute parseTeLspAttributes(final RSVPTeObjectRegistry registry,
        final ByteBuf attributes) throws BGPParsingException {

    final TeLspAttributesBuilder builder = new TeLspAttributesBuilder();
    LOG.trace("Initiated parsing TE LSP Objects.");
    while (attributes.isReadable()) {
        final int length = attributes.readUnsignedShort();
        final int classNum = attributes.readUnsignedByte();
        final int cType = attributes.readUnsignedByte();
        final ByteBuf value = attributes.readSlice(length);
        try {/*from  ww w  .  jav  a 2 s.c o  m*/
            addObject(builder, registry.parseRSPVTe(classNum, cType, value));
        } catch (final RSVPParsingException e) {
            LOG.debug("Parsering TE LSP Object error. class number: {} cType: {} value: {}", classNum, cType,
                    value, e);
            throw new BGPParsingException(e.getMessage());
        }
    }
    LOG.trace("Finished parsing TE LSP Objects.");
    return new TeLspAttributesCaseBuilder().setTeLspAttributes(builder.build()).build();
}

From source file:org.opendaylight.protocol.bgp.linkstate.impl.attribute.sr.RangeTlvParser.java

License:Open Source License

private static List<SubTlvs> parseRangeSubTlvs(final ByteBuf buffer, final ProtocolId protocolId) {
    final List<SubTlvs> subTlvs = new ArrayList<>();
    while (buffer.isReadable()) {
        final SubTlvsBuilder subTlv = new SubTlvsBuilder();
        final RangeSubTlv subTlvCase;
        final int type = buffer.readUnsignedShort();
        final int length = buffer.readUnsignedShort();
        switch (type) {
        case PREFIX_SID:
            subTlvCase = new PrefixSidTlvCaseBuilder(
                    SrPrefixAttributesParser.parseSrPrefix(buffer.readSlice(length), protocolId)).build();
            break;
        case IPV6_PREFIX_SID:
            subTlvCase = new Ipv6PrefixSidTlvCaseBuilder(
                    Ipv6SrPrefixAttributesParser.parseSrIpv6Prefix(buffer.readSlice(length))).build();
            break;
        case BINDING_SID:
            subTlvCase = new BindingSidTlvCaseBuilder(
                    BindingSidLabelParser.parseBindingSidLabel(buffer.readSlice(length), protocolId)).build();
            break;
        case SID_TYPE:
            subTlvCase = new SidLabelTlvCaseBuilder().setSidLabelIndex(
                    SidLabelIndexParser.parseSidLabelIndex(Size.forValue(length), buffer.readSlice(length)))
                    .build();//from  ww w.j  av  a2s  .  c om
            break;
        default:
            LOG.info("Unknown type of range sub-tlv: {}", type);
            buffer.skipBytes(length);
            continue;
        }
        subTlvs.add(subTlv.setRangeSubTlv(subTlvCase).build());
    }
    return subTlvs;
}