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.l3vpn.AbstractVpnNlriParser.java

License:Open Source License

private static List<VpnDestination> parseNlri(final ByteBuf nlri, final Class<? extends AddressFamily> afi) {
    if (!nlri.isReadable()) {
        return null;
    }/*from   ww  w  .  jav a  2  s  .co  m*/
    final List<VpnDestination> dests = new ArrayList<>();

    while (nlri.isReadable()) {
        final VpnDestinationBuilder builder = new VpnDestinationBuilder();
        final short length = nlri.readUnsignedByte();
        builder.setLabelStack(LUNlriParser.parseLabel(nlri));
        final int labelNum = builder.getLabelStack().size();
        final int prefixLen = length - (LUNlriParser.LABEL_LENGTH * Byte.SIZE * labelNum)
                - (RouteDistinguisherUtil.RD_LENGTH * Byte.SIZE);
        builder.setRouteDistinguisher(RouteDistinguisherUtil.parseRouteDistinguisher(nlri));
        Preconditions.checkState(prefixLen > 0, "A valid VPN IP prefix is required.");
        builder.setPrefix(LUNlriParser.parseIpPrefix(nlri, prefixLen, afi));
        dests.add(builder.build());
    }
    return dests;
}

From source file:org.opendaylight.protocol.bgp.l3vpn.AbstractVpnNlriParser.java

License:Open Source License

@Override
public void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;/*w w  w.j  av a  2s .  c o m*/
    }
    final List<VpnDestination> dst = parseNlri(nlri, builder.getAfi());
    builder.setWithdrawnRoutes(getWithdrawnRoutesByDestination(dst));
}

From source file:org.opendaylight.protocol.bgp.l3vpn.AbstractVpnNlriParser.java

License:Open Source License

@Override
public void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;//  w  ww.jav a  2  s . c o m
    }
    final List<VpnDestination> dst = parseNlri(nlri, builder.getAfi());
    builder.setAdvertizedRoutes(getAdvertizedRoutesByDestination(dst));
}

From source file:org.opendaylight.protocol.bgp.labeled.unicast.LUNlriParser.java

License:Open Source License

private static List<CLabeledUnicastDestination> parseNlri(final ByteBuf nlri,
        final Class<? extends AddressFamily> afi, final boolean mPathSupported) {
    if (!nlri.isReadable()) {
        return null;
    }//from   w  w  w.j a  v a2 s  . co m
    final List<CLabeledUnicastDestination> dests = new ArrayList<>();

    while (nlri.isReadable()) {
        final CLabeledUnicastDestinationBuilder builder = new CLabeledUnicastDestinationBuilder();
        if (mPathSupported) {
            builder.setPathId(PathIdUtil.readPathId(nlri));
        }
        final short length = nlri.readUnsignedByte();
        builder.setLabelStack(parseLabel(nlri));
        final int labelNum = builder.getLabelStack().size();
        final int prefixLen = length - (LABEL_LENGTH * Byte.SIZE * labelNum);
        builder.setPrefix(parseIpPrefix(nlri, prefixLen, afi));
        dests.add(builder.build());
    }
    return dests;
}

From source file:org.opendaylight.protocol.bgp.labeled.unicast.LUNlriParser.java

License:Open Source License

public static List<LabelStack> parseLabel(final ByteBuf nlri) {
    if (!nlri.isReadable()) {
        return null;
    }/*from   w w  w . j  a v a2 s  .  c om*/
    final List<LabelStack> labels = new ArrayList<>();
    boolean bottomBit;
    do {
        final ByteBuf slice = nlri.readSlice(LABEL_LENGTH);
        bottomBit = MplsLabelUtil.getBottomBit(slice);
        labels.add(new LabelStackBuilder().setLabelValue(MplsLabelUtil.mplsLabelForByteBuf(slice)).build());
    } while (!bottomBit);
    return labels;
}

From source file:org.opendaylight.protocol.bgp.labeled.unicast.LUNlriParser.java

License:Open Source License

@Override
public void parseNlri(@Nonnull final ByteBuf nlri, @Nonnull final MpReachNlriBuilder builder,
        @Nullable final PeerSpecificParserConstraint constraint) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;// w w w.  j  av  a  2s  .  c  om
    }
    final Class<? extends AddressFamily> afi = builder.getAfi();
    final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
            new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
    final List<CLabeledUnicastDestination> dst = parseNlri(nlri, afi, mPathSupported);

    DestinationType destination = null;
    if (afi == Ipv4AddressFamily.class) {
        destination = new DestinationLabeledUnicastCaseBuilder()
                .setDestinationLabeledUnicast(
                        new DestinationLabeledUnicastBuilder().setCLabeledUnicastDestination(dst).build())
                .build();
    } else if (afi == Ipv6AddressFamily.class) {
        destination = new DestinationIpv6LabeledUnicastCaseBuilder()
                .setDestinationIpv6LabeledUnicast(
                        new DestinationIpv6LabeledUnicastBuilder().setCLabeledUnicastDestination(dst).build())
                .build();
    }
    builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(destination).build());
}

From source file:org.opendaylight.protocol.bgp.labeled.unicast.LUNlriParser.java

License:Open Source License

@Override
public void parseNlri(@Nonnull final ByteBuf nlri, @Nonnull final MpUnreachNlriBuilder builder,
        @Nullable final PeerSpecificParserConstraint constraint) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;/*from  w  w  w.ja  v a  2 s.  com*/
    }
    final Class<? extends AddressFamily> afi = builder.getAfi();

    final boolean mPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint,
            new BgpTableTypeImpl(builder.getAfi(), builder.getSafi()));
    final List<CLabeledUnicastDestination> dst = parseNlri(nlri, afi, mPathSupported);

    DestinationType destination = null;
    if (afi == Ipv4AddressFamily.class) {
        destination = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationLabeledUnicastCaseBuilder()
                .setDestinationLabeledUnicast(
                        new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.labeled.unicast._case.DestinationLabeledUnicastBuilder()
                                .setCLabeledUnicastDestination(dst).build())
                .build();
    } else if (afi == Ipv6AddressFamily.class) {
        destination = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv6LabeledUnicastCaseBuilder()
                .setDestinationIpv6LabeledUnicast(
                        new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.labeled.unicast.rev150525.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.destination.ipv6.labeled.unicast._case.DestinationIpv6LabeledUnicastBuilder()
                                .setCLabeledUnicastDestination(dst).build())
                .build();
    }
    builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder().setDestinationType(destination).build());
}

From source file:org.opendaylight.protocol.bgp.labeled.unicast.OriginatorSrgbTlvParser.java

License:Open Source License

private static List<SrgbValue> parseSrgbs(final ByteBuf buffer) {
    Preconditions.checkState(buffer.readableBytes() % SRGB_LENGTH == 0,
            "Number of SRGBs doesn't fit available bytes.");
    final List<SrgbValue> ret = new ArrayList<SrgbValue>();
    while (buffer.isReadable()) {
        ret.add(new SrgbValueBuilder().setBase(new Srgb((long) buffer.readUnsignedMedium()))
                .setRange(new Srgb((long) buffer.readUnsignedMedium())).build());
    }// w  w  w  .j  a  v  a2 s .c o m
    return ret;
}

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

License:Open Source License

private static void parseSrlg(final ByteBuf value, final LinkAttributesBuilder builder) {
    final List<SrlgId> sharedRiskLinkGroups = new ArrayList<>();
    while (value.isReadable()) {
        sharedRiskLinkGroups.add(new SrlgId(value.readUnsignedInt()));
    }//from   w ww .  j ava  2s. c  om
    builder.setSharedRiskLinkGroups(sharedRiskLinkGroups);
    LOG.debug("Parsed Shared Risk Link Groups {}", builder.getSharedRiskLinkGroups());
}

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

License:Open Source License

private static Multimap<Integer, ByteBuf> getAttributesMap(final ByteBuf buffer) {
    /*//from  w w  w.  j ava 2s  .c o  m
     * e.g. IS-IS Area Identifier TLV can occur multiple times
     */
    final Multimap<Integer, ByteBuf> map = HashMultimap.create();
    while (buffer.isReadable()) {
        final int type = buffer.readUnsignedShort();
        final int length = buffer.readUnsignedShort();
        final ByteBuf value = buffer.readSlice(length);
        map.put(type, value);
    }
    return map;
}