Examples with AsPath org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath used on opensource projects

Example 1 with AsPath

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath in project bgpcep by opendaylight.

the class AsPathAttributeParser method serializeAttribute.

@Override
public void serializeAttribute(final DataObject attribute, final ByteBuf byteAggregator) {
    Preconditions.checkArgument(attribute instanceof Attributes, "Attribute parameter is not a PathAttribute object.");
    final Attributes pathAttributes = (Attributes) attribute;
    final AsPath asPath = pathAttributes.getAsPath();
    if (asPath == null) {
        return;
    }
    final ByteBuf segmentsBuffer = Unpooled.buffer();
    if (asPath.getSegments() != null) {
        for (final Segments segments : asPath.getSegments()) {
            if (segments.getAsSequence() != null) {
                AsPathSegmentParser.serializeAsList(segments.getAsSequence(), SegmentType.AS_SEQUENCE, segmentsBuffer);
            } else if (segments.getAsSet() != null) {
                AsPathSegmentParser.serializeAsList(segments.getAsSet(), SegmentType.AS_SET, segmentsBuffer);
            } else {
                LOG.warn("Segment doesn't have AsSequence nor AsSet list.");
            }
        }
    }
    AttributeUtil.formatAttribute(AttributeUtil.TRANSITIVE, TYPE, segmentsBuffer, byteAggregator);
}

Example 2 with AsPath

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath in project bgpcep by opendaylight.

the class BGPParserTest method testIPv6Nlri.

/*
     * Tests IPv6 NEXT_HOP, NLRI, ORIGIN.IGP, MULTI_EXIT_DISC, ORIGINATOR-ID, CLUSTER_LIST.
     *
     * ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <- marker
     * 00 80 <- length (128) - including header
     * 02 <- message type
     * 00 00 <- withdrawn routes length
     * 00 69 <- total path attribute length (105)
     * 40 <- attribute flags
     * 01 <- attribute type code (origin)
     * 01 <- attribute length
     * 00 <- Origin value (IGP)
     * 40 <- attribute flags
     * 02 <- attribute type code (as path)
     * 06 <- attribute length
     * 02 <- AS_SEQUENCE
     * 01 <- path segment count
     * 00 00 fd e9 <- path segment value (65001)
     * 40 <- attribute flags
     * 03 <- attribute type code (next hop)
     * 04 <- attribute length
     * 0a 00 00 00 <- next hop value (10.0.0.0)
     * 80 <- attribute flags
     * 04 <- attribute type code (multi exit disc)
     * 04 <- attribute length
     * 00 00 00 00 <- value
     * 80 <- attribute flags
     * 09 <- attribute type code (originator id)
     * 04 <- attribute length
     * 7f 00 00 01 <- value (localhost ip)
     * 80 <- attribute flags
     * 0a <- attribute type code (cluster list)
     * 08 <- attribute length
     * 01 02 03 04 <- value
     * 05 06 07 08 <- value
     * 80 <- attribute flags
     * 0e <- attribute type code (mp reach nlri)
     * 40 <- attribute length
     * 00 02 <- AFI (Ipv6)
     * 01 <- SAFI (Unicast)
     * 20 <- length of next hop
     * 20 01 0d b8 00 00 00 00 00 00 00 00 00 00 00 01 <- global
     * fe 80 00 00 00 00 00 00 c0 01 0b ff fe 7e 00 <- link local
     * 00 <- reserved
     *
     * //NLRI
     * 40 20 01 0d b8 00 01 00 02 <- IPv6 Prefix (2001:db8:1:2:: / 64)
     * 40 20 01 0d b8 00 01 00 01 <- IPv6 Prefix (2001:db8:1:1:: / 64)
     * 40 20 01 0d b8 00 01 00 00 <- IPv6 Prefix (2001:db8:1:: / 64)
     *
     */
@Test
public void testIPv6Nlri() throws Exception {
    final Update message = (Update) messageRegistry.parseMessage(Unpooled.wrappedBuffer(input.get(1)), null);
    // check fields
    assertNull(message.getWithdrawnRoutes());
    final UpdateBuilder builder = new UpdateBuilder();
    // check NLRI
    final List<Ipv6Prefixes> prefs = new ArrayList<>();
    prefs.add(new Ipv6PrefixesBuilder().setPrefix(new Ipv6Prefix("2001:db8:1:2::/64")).build());
    prefs.add(new Ipv6PrefixesBuilder().setPrefix(new Ipv6Prefix("2001:db8:1:1::/64")).build());
    prefs.add(new Ipv6PrefixesBuilder().setPrefix(new Ipv6Prefix("2001:db8:1::/64")).build());
    assertNull(message.getNlri());
    // attributes
    final List<AsNumber> asNumbers = new ArrayList<>();
    asNumbers.add(new AsNumber(Uint32.valueOf(65001)));
    final List<Segments> asPath = new ArrayList<>();
    asPath.add(new SegmentsBuilder().setAsSequence(asNumbers).build());
    final Ipv6NextHopCase nextHop = new Ipv6NextHopCaseBuilder().setIpv6NextHop(new Ipv6NextHopBuilder().setGlobal(new Ipv6AddressNoZone("2001:db8::1")).setLinkLocal(new Ipv6AddressNoZone("fe80::c001:bff:fe7e:0")).build()).build();
    final List<ClusterIdentifier> clusters = Lists.newArrayList(new ClusterIdentifier(new Ipv4AddressNoZone("1.2.3.4")), new ClusterIdentifier(new Ipv4AddressNoZone("5.6.7.8")));
    // check path attributes
    final Attributes attrs = message.getAttributes();
    final AttributesBuilder paBuilder = new AttributesBuilder();
    paBuilder.setOrigin(new OriginBuilder().setValue(BgpOrigin.Igp).build());
    assertEquals(paBuilder.getOrigin(), attrs.getOrigin());
    paBuilder.setAsPath(new AsPathBuilder().setSegments(asPath).build());
    assertEquals(paBuilder.getAsPath(), attrs.getAsPath());
    paBuilder.setMultiExitDisc(new MultiExitDiscBuilder().setMed(Uint32.ZERO).build());
    assertEquals(paBuilder.getMultiExitDisc(), attrs.getMultiExitDisc());
    paBuilder.setOriginatorId(new OriginatorIdBuilder().setOriginator(new Ipv4AddressNoZone("127.0.0.1")).build());
    assertEquals(paBuilder.getOriginatorId(), attrs.getOriginatorId());
    paBuilder.setClusterId(new ClusterIdBuilder().setCluster(clusters).build());
    assertEquals(paBuilder.getClusterId(), attrs.getClusterId());
    final MpReachNlriBuilder mpBuilder = new MpReachNlriBuilder().setAfi(Ipv6AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).setCNextHop(nextHop).setAdvertizedRoutes(new AdvertizedRoutesBuilder().setDestinationType(new DestinationIpv6CaseBuilder().setDestinationIpv6(new DestinationIpv6Builder().setIpv6Prefixes(prefs).build()).build()).build());
    paBuilder.addAugmentation(new AttributesReachBuilder().setMpReachNlri(mpBuilder.build()).build());
    assertEquals(paBuilder.augmentation(AttributesReach.class).getMpReachNlri(), attrs.augmentation(AttributesReach.class).getMpReachNlri());
    paBuilder.setUnrecognizedAttributes(Collections.emptyMap());
    // check API message
    builder.setAttributes(paBuilder.build());
    assertEquals(builder.build(), message);
    final ByteBuf buffer = Unpooled.buffer();
    messageRegistry.serializeMessage(message, buffer);
    assertArrayEquals(input.get(1), ByteArray.readAllBytes(buffer));
}

Example 3 with AsPath

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath in project bgpcep by opendaylight.

the class MatchAsPathSetHandler method matchAsPathSetCondition.

private boolean matchAsPathSetCondition(final AsPath asPath, final String asPathSetName, final MatchSetOptionsType matchSetOptions) {
    if (asPath == null) {
        return false;
    }
    final AsPathSet asPathSetFilter = this.sets.getUnchecked(StringUtils.substringBetween(asPathSetName, "=\"", "\""));
    final List<Segments> segments = asPath.getSegments();
    if (asPathSetFilter == null || segments == null) {
        return false;
    }
    final List<AsNumber> l1 = segments.stream().map(AsPathSegment::getAsSequence).filter(Objects::nonNull).flatMap(Collection::stream).filter(Objects::nonNull).collect(Collectors.toList());
    final List<AsNumber> l2 = segments.stream().map(AsPathSegment::getAsSet).filter(Objects::nonNull).flatMap(Collection::stream).filter(Objects::nonNull).collect(Collectors.toList());
    List<AsNumber> allAs = Stream.of(l1, l2).flatMap(Collection::stream).collect(Collectors.toList());
    final List<AsNumber> asPathSetFilterList = asPathSetFilter.getAsPathSetMember();
    if (matchSetOptions.equals(MatchSetOptionsType.ALL)) {
        return allAs.containsAll(asPathSetFilterList) && asPathSetFilterList.containsAll(allAs);
    }
    final boolean noneInCommon = Collections.disjoint(allAs, asPathSetFilterList);
    if (matchSetOptions.equals(MatchSetOptionsType.ANY)) {
        return !noneInCommon;
    }
    // (matchSetOptions.equals(MatchSetOptionsType.INVERT))
    return noneInCommon;
}

Example 4 with AsPath

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath in project bgpcep by opendaylight.

the class AsPathLengthTest method testASPathLengthEq.

@Test
public void testASPathLengthEq() {
    final AsPathBuilder asPath = new AsPathBuilder();
    asPath.setSegments(Collections.singletonList(new SegmentsBuilder().setAsSequence(Arrays.asList(AsNumber.getDefaultInstance("1"), AsNumber.getDefaultInstance("2"), AsNumber.getDefaultInstance("3"))).build()));
    Statement statement = this.basicStatements.stream().filter(st -> st.getName().equals("as-path-eq-length-test")).findFirst().get();
    RouteAttributeContainer attributeContainer = routeAttributeContainerFalse(new AttributesBuilder().setAsPath(asPath.build()).build());
    RouteAttributeContainer result = this.statementRegistry.applyExportStatement(this.baseAttributes, IPV4UNICAST.class, this.exportParameters, attributeContainer, statement);
    assertNotNull(result.getAttributes());
    asPath.setSegments(Collections.singletonList(new SegmentsBuilder().setAsSequence(Arrays.asList(AsNumber.getDefaultInstance("1"), AsNumber.getDefaultInstance("3"))).build()));
    attributeContainer = routeAttributeContainerFalse(new AttributesBuilder().setAsPath(asPath.build()).build());
    result = this.statementRegistry.applyExportStatement(this.baseAttributes, IPV4UNICAST.class, this.exportParameters, attributeContainer, statement);
    assertNull(result.getAttributes());
}

Example 5 with AsPath

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.path.attributes.attributes.AsPath in project bgpcep by opendaylight.

the class AsPathAttributeParser method parseAsPath.

/**
 * Parses AS_PATH from bytes.
 *
 * @param refCache ReferenceCache shared reference of object
 * @param buffer bytes to be parsed
 * @return new ASPath object
 * @throws BGPDocumentedException if there is no AS_SEQUENCE present (mandatory)
 */
private static AsPath parseAsPath(final ReferenceCache refCache, final ByteBuf buffer, final RevisedErrorHandling errorHandling) throws BGPDocumentedException, BGPTreatAsWithdrawException {
    if (!buffer.isReadable()) {
        return EMPTY;
    }
    final List<Segments> ases = new ArrayList<>();
    boolean isSequence = false;
    for (int readable = buffer.readableBytes(); readable != 0; readable = buffer.readableBytes()) {
        if (readable < 2) {
            throw errorHandling.reportError(BGPError.AS_PATH_MALFORMED, "Insufficient AS PATH segment header length %s", readable);
        }
        final int type = buffer.readUnsignedByte();
        final SegmentType segmentType = AsPathSegmentParser.parseType(type);
        if (segmentType == null) {
            throw errorHandling.reportError(BGPError.AS_PATH_MALFORMED, "Unknown AS PATH segment type %s", type);
        }
        final int count = buffer.readUnsignedByte();
        if (count == 0 && errorHandling != RevisedErrorHandling.NONE) {
            throw new BGPTreatAsWithdrawException(BGPError.AS_PATH_MALFORMED, "Empty AS_PATH segment");
        }
        // We read 2 bytes of header at this point
        readable -= 2;
        final int segmentLength = count * AsPathSegmentParser.AS_NUMBER_LENGTH;
        if (segmentLength > readable) {
            throw errorHandling.reportError(BGPError.AS_PATH_MALFORMED, "Calculated segment length %s would overflow available buffer %s", segmentLength, readable);
        }
        final List<AsNumber> asList = AsPathSegmentParser.parseAsSegment(refCache, count, buffer.readSlice(segmentLength));
        if (segmentType == SegmentType.AS_SEQUENCE) {
            ases.add(new SegmentsBuilder().setAsSequence(asList).build());
            isSequence = true;
        } else {
            ases.add(new SegmentsBuilder().setAsSet(asList).build());
        }
    }
    if (!isSequence) {
        throw errorHandling.reportError(BGPError.AS_PATH_MALFORMED, "AS_SEQUENCE must be present in AS_PATH attribute.");
    }
    return new AsPathBuilder().setSegments(ImmutableList.copyOf(ases)).build();
}