Examples with Nlri org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri used on opensource projects

Example 51 with Nlri

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri in project bgpcep by opendaylight.

the class AbstractFlowspecL3vpnNlriParser method parseL3vpnNlriFlowspecList.

protected final List<Flowspec> parseL3vpnNlriFlowspecList(final ByteBuf nlri) {
    if (!nlri.isReadable()) {
        return null;
    }
    final List<Flowspec> fss = new ArrayList<>();
    while (nlri.isReadable()) {
        final FlowspecBuilder builder = new FlowspecBuilder();
        builder.setFlowspecType(this.flowspecTypeRegistry.parseFlowspecType(nlri));
        fss.add(builder.build());
    }
    return fss;
}

Example 52 with Nlri

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri in project bgpcep by opendaylight.

the class Ipv6NlriParser method prefixes.

private static DestinationIpv6 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraint, final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
    final List<Ipv6Prefixes> prefixes = new ArrayList<>();
    final boolean supported = MultiPathSupportUtil.isTableTypeSupported(constraint, new BgpTableTypeImpl(afi, safi));
    while (nlri.isReadable()) {
        final Ipv6PrefixesBuilder prefixesBuilder = new Ipv6PrefixesBuilder();
        if (supported) {
            prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
        }
        prefixesBuilder.setPrefix(Ipv6Util.prefixForByteBuf(nlri));
        prefixes.add(prefixesBuilder.build());
    }
    return new DestinationIpv6Builder().setIpv6Prefixes(prefixes).build();
}

Example 53 with Nlri

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri in project bgpcep by opendaylight.

the class VpnDestinationUtil method parseNlri.

static List<VpnDestination> parseNlri(final ByteBuf nlri, final Class<? extends AddressFamily> afi) {
    if (!nlri.isReadable()) {
        return null;
    }
    final List<VpnDestination> dests = new ArrayList<>();
    while (nlri.isReadable()) {
        final VpnDestinationBuilder builder = new VpnDestinationBuilder();
        final short length = nlri.readUnsignedByte();
        final List<LabelStack> labels = LUNlriParser.parseLabel(nlri);
        builder.setLabelStack(labels);
        final int labelNum = labels != null ? labels.size() : 1;
        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;
}

Example 54 with Nlri

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri in project bgpcep by opendaylight.

the class BGPUpdateMessageParser method serializeMessage.

@Override
public void serializeMessage(final Notification message, final ByteBuf bytes) {
    Preconditions.checkArgument(message instanceof Update, "Message needs to be of type Update");
    final Update update = (Update) message;
    final ByteBuf messageBody = Unpooled.buffer();
    final List<WithdrawnRoutes> withdrawnRoutes = update.getWithdrawnRoutes();
    if (withdrawnRoutes != null) {
        final ByteBuf withdrawnRoutesBuf = Unpooled.buffer();
        withdrawnRoutes.forEach(withdrawnRoute -> writePathIdPrefix(withdrawnRoutesBuf, withdrawnRoute.getPathId(), withdrawnRoute.getPrefix()));
        messageBody.writeShort(withdrawnRoutesBuf.writerIndex());
        messageBody.writeBytes(withdrawnRoutesBuf);
    } else {
        messageBody.writeZero(WITHDRAWN_ROUTES_LENGTH_SIZE);
    }
    if (update.getAttributes() != null) {
        final ByteBuf pathAttributesBuf = Unpooled.buffer();
        this.reg.serializeAttribute(update.getAttributes(), pathAttributesBuf);
        messageBody.writeShort(pathAttributesBuf.writerIndex());
        messageBody.writeBytes(pathAttributesBuf);
    } else {
        messageBody.writeZero(TOTAL_PATH_ATTR_LENGTH_SIZE);
    }
    final List<Nlri> nlris = update.getNlri();
    if (nlris != null) {
        nlris.forEach(nlri -> writePathIdPrefix(messageBody, nlri.getPathId(), nlri.getPrefix()));
    }
    MessageUtil.formatMessage(TYPE, messageBody, bytes);
}

Example 55 with Nlri

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev171207.update.message.Nlri in project bgpcep by opendaylight.

the class BGPUpdateMessageParser method parseMessageBody.

/**
 * Parse Update message from buffer.
 * Calls {@link #checkMandatoryAttributesPresence(Update)} to check for presence of mandatory attributes.
 *
 * @param buffer Encoded BGP message in ByteBuf
 * @param messageLength Length of the BGP message
 * @param constraint Peer specific constraints
 * @return Parsed Update message body
 */
@Override
public Update parseMessageBody(final ByteBuf buffer, final int messageLength, final PeerSpecificParserConstraint constraint) throws BGPDocumentedException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Buffer cannot be null or empty.");
    final UpdateBuilder builder = new UpdateBuilder();
    final boolean isMultiPathSupported = MultiPathSupportUtil.isTableTypeSupported(constraint, new BgpTableTypeImpl(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class));
    final int withdrawnRoutesLength = buffer.readUnsignedShort();
    if (withdrawnRoutesLength > 0) {
        final List<WithdrawnRoutes> withdrawnRoutes = new ArrayList<>();
        final ByteBuf withdrawnRoutesBuffer = buffer.readBytes(withdrawnRoutesLength);
        while (withdrawnRoutesBuffer.isReadable()) {
            final WithdrawnRoutesBuilder withdrawnRoutesBuilder = new WithdrawnRoutesBuilder();
            if (isMultiPathSupported) {
                withdrawnRoutesBuilder.setPathId(PathIdUtil.readPathId(withdrawnRoutesBuffer));
            }
            withdrawnRoutesBuilder.setPrefix(Ipv4Util.prefixForByteBuf(withdrawnRoutesBuffer));
            withdrawnRoutes.add(withdrawnRoutesBuilder.build());
        }
        builder.setWithdrawnRoutes(withdrawnRoutes);
    }
    final int totalPathAttrLength = buffer.readUnsignedShort();
    if (withdrawnRoutesLength == 0 && totalPathAttrLength == 0) {
        return builder.build();
    }
    if (totalPathAttrLength > 0) {
        try {
            final Attributes attributes = this.reg.parseAttributes(buffer.readSlice(totalPathAttrLength), constraint);
            builder.setAttributes(attributes);
        } catch (final RuntimeException | BGPParsingException e) {
            // Catch everything else and turn it into a BGPDocumentedException
            throw new BGPDocumentedException("Could not parse BGP attributes.", BGPError.MALFORMED_ATTR_LIST, e);
        }
    }
    final List<Nlri> nlri = new ArrayList<>();
    while (buffer.isReadable()) {
        final NlriBuilder nlriBuilder = new NlriBuilder();
        if (isMultiPathSupported) {
            nlriBuilder.setPathId(PathIdUtil.readPathId(buffer));
        }
        nlriBuilder.setPrefix(Ipv4Util.prefixForByteBuf(buffer));
        nlri.add(nlriBuilder.build());
    }
    if (!nlri.isEmpty()) {
        builder.setNlri(nlri);
    }
    final Update msg = builder.build();
    checkMandatoryAttributesPresence(msg);
    LOG.debug("BGP Update message was parsed {}.", msg);
    return msg;
}