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

Example 21 with Segments

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

the class BestPathStateImpl method resolveValues.

private void resolveValues() {
    if (resolved) {
        return;
    }
    final NamespaceSpecificIds ids = PATH_CACHE.getUnchecked(attributes.getIdentifier().getNodeType().getModule());
    localPref = (Uint32) NormalizedNodes.findNode(attributes, ids.locPref).map(NormalizedNode::body).orElse(null);
    final Optional<NormalizedNode> maybeMultiExitDisc = NormalizedNodes.findNode(attributes, ids.med);
    if (maybeMultiExitDisc.isPresent()) {
        multiExitDisc = ((Uint32) maybeMultiExitDisc.get().body()).toJava();
    } else {
        multiExitDisc = 0L;
    }
    final Optional<NormalizedNode> maybeOrigin = NormalizedNodes.findNode(attributes, ids.orig);
    if (maybeOrigin.isPresent()) {
        final String originStr = (String) maybeOrigin.get().body();
        origin = BgpOrigin.forName(originStr).orElseThrow(() -> new IllegalArgumentException("Unhandled origin value " + originStr));
    } else {
        origin = null;
    }
    final Optional<NormalizedNode> maybeSegments = NormalizedNodes.findNode(attributes, ids.asPath);
    if (maybeSegments.isPresent()) {
        final UnkeyedListNode segments = (UnkeyedListNode) maybeSegments.get();
        final List<Segments> segs = extractSegments(segments, ids);
        if (!segs.isEmpty()) {
            this.peerAs = BesthPathStateUtil.getPeerAs(segs);
            this.asPathLength = countAsPath(segs);
        }
    }
    final Optional<NormalizedNode> maybeCommunities = NormalizedNodes.findNode(attributes, ids.communities);
    if (maybeCommunities.isPresent()) {
        depreferenced = ((UnkeyedListNode) maybeCommunities.orElseThrow()).body().stream().anyMatch(community -> isStale(ids, community));
    } else {
        depreferenced = false;
    }
    this.resolved = true;
}

Example 22 with Segments

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

the class AsPathAttributeParser method serializeAttribute.

@Override
public void serializeAttribute(final Attributes pathAttributes, final ByteBuf byteAggregator) {
    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 23 with Segments

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

the class BGPParserTest method testGetUpdateMessage3.

/*
     * Tests more AS Numbers in AS_PATH, AGGREGATOR, ORIGIN.INCOMPLETE
     *
     * ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <- marker
     * 00 4b <- length (75) - including header
     * 02 <- message type
     * 00 00 <- withdrawn routes length
     * 00 30 <- total path attribute length (48)
     * 40 <- attribute flags
     * 01 <- attribute type code (origin)
     * 01 <- attribute length
     * 02 <- Origin value (Incomplete)
     * 40 <- attribute flags
     * 02 <- attribute type code (as path)
     * 10 <- attribute length
     * 02 <- AS_SEQUENCE
     * 01 <- path segment count
     * 00 00 00 1e <- path segment value (30)
     * 01 <- AS_SET
     * 02 <- path segment count
     * 00 00 00 0a <- path segment value (10)
     * 00 00 00 14 <- path segment value (20)
     * 40 <- attribute flags
     * 03 <- attribute type (Next hop)
     * 04 <- attribute length
     * 0a 00 00 09 <- value (10.0.0.9)
     * 80 <- attribute flags
     * 04 <- attribute type code (multi exit disc)
     * 04 <- attribute length
     * 00 00 00 00 <- value
     * c0 <- attribute flags
     * 07 <- attribute type (Aggregator)
     * 08 <- attribute length
     * 00 00 00 1e <- value (AS number = 30)
     * 0a 00 00 09 <- value (IP address = 10.0.0.9)
     *
     * //NLRI
     * 15 ac 10 00 <- IPv4 Prefix (172.16.0.0 / 21)
     */
@Test
public void testGetUpdateMessage3() throws Exception {
    final byte[] body = ByteArray.cutBytes(INPUT_BYTES.get(2), MessageUtil.COMMON_HEADER_LENGTH);
    final int messageLength = ByteArray.bytesToInt(ByteArray.subByte(INPUT_BYTES.get(2), MessageUtil.MARKER_LENGTH, LENGTH_FIELD_LENGTH));
    final Update message = BGPParserTest.updateParser.parseMessageBody(Unpooled.copiedBuffer(body), messageLength, null);
    final UpdateBuilder builder = new UpdateBuilder();
    // check nlri
    final List<Nlri> nlris = List.of(new NlriBuilder().setPrefix(new Ipv4Prefix("172.16.0.0/21")).build());
    builder.setNlri(nlris);
    assertEquals(builder.getNlri(), message.getNlri());
    // check fields
    assertNull(message.getWithdrawnRoutes());
    // attributes
    final List<AsNumber> asNumbers = new ArrayList<>();
    asNumbers.add(new AsNumber(Uint32.valueOf(30)));
    final List<Segments> asPath = new ArrayList<>();
    asPath.add(new SegmentsBuilder().setAsSequence(asNumbers).build());
    final List<AsNumber> asSet = List.of(new AsNumber(Uint32.TEN), new AsNumber(Uint32.valueOf(20)));
    asPath.add(new SegmentsBuilder().setAsSet(asSet).build());
    final Aggregator aggregator = new AggregatorBuilder().setAsNumber(new AsNumber(Uint32.valueOf(30))).setNetworkAddress(new Ipv4AddressNoZone("10.0.0.9")).build();
    final Ipv4NextHopCase nextHop = new Ipv4NextHopCaseBuilder().setIpv4NextHop(new Ipv4NextHopBuilder().setGlobal(new Ipv4AddressNoZone("10.0.0.9")).build()).build();
    // check path attributes
    final Attributes attrs = message.getAttributes();
    final AttributesBuilder paBuilder = new AttributesBuilder();
    paBuilder.setOrigin(new OriginBuilder().setValue(BgpOrigin.Incomplete).build());
    assertEquals(paBuilder.getOrigin(), attrs.getOrigin());
    paBuilder.setAsPath(new AsPathBuilder().setSegments(asPath).build());
    assertEquals(paBuilder.getAsPath(), attrs.getAsPath());
    paBuilder.setCNextHop(nextHop);
    assertEquals(paBuilder.getCNextHop(), attrs.getCNextHop());
    paBuilder.setMultiExitDisc(new MultiExitDiscBuilder().setMed(Uint32.ZERO).build());
    assertEquals(paBuilder.getMultiExitDisc(), attrs.getMultiExitDisc());
    paBuilder.setAggregator(aggregator);
    assertEquals(paBuilder.getAggregator(), attrs.getAggregator());
    paBuilder.setUnrecognizedAttributes(Map.of());
    builder.setAttributes(paBuilder.build());
    assertEquals(builder.build(), message);
    final ByteBuf buffer = Unpooled.buffer();
    BGPParserTest.updateParser.serializeMessage(message, buffer);
    assertArrayEquals(INPUT_BYTES.get(2), ByteArray.readAllBytes(buffer));
}

Example 24 with Segments

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

the class BGPParserTest method testUpdateMessageNlriAddPath.

/*
     * Tests IPv4 NEXT_HOP, ATOMIC_AGGREGATE, COMMUNITY, NLRI with multiple paths.
     *
     * ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <- marker
     * 00 60 <- length (96) - including header
     * 02 <- message type
     * 00 00 <- withdrawn routes length
     * 00 31 <- total path attribute length (49)
     * 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 ea <- path segment value (65002)
     * 40 <- attribute flags
     * 03 <- attribute type code (Next Hop)
     * 04 <- attribute length
     * 0a 00 00 02 <- value (10.0.0.2)
     * 80 <- attribute flags
     * 04 <- attribute type code (multi exit disc)
     * 04 <- attribute length
     * 00 00 00 00 <- value
     * 40 <- attribute flags
     * 06 <- attribute type code (atomic aggregate)
     * 00 <- attribute length
     * C0 <- attribute flags
     * 08 <- attribute type code (community)
     * 10 <- attribute length
     * FF FF FF 01 <- value (NO_EXPORT)
     * FF FF FF 02 <- value (NO_ADVERTISE)
     * FF FF FF 03 <- value (NO_EXPORT_SUBCONFED)
     * FF FF FF 10 <- unknown Community
     *
     * //NLRI
     * 00 00 00 01 <- path-id (1)
     * 18 ac 11 02 <- IPv4 Prefix (172.17.1.0 / 24)
     * 00 00 00 01 <- path-id (2)
     * 18 ac 11 01 <- IPv4 Prefix (172.17.1.0 / 24)
     * 00 00 00 01 <- path-id (1)
     * 18 ac 11 00 <- IPv4 Prefix (172.17.0.0 / 24)
     */
@Test
public void testUpdateMessageNlriAddPath() throws Exception {
    final byte[] body = ByteArray.cutBytes(updatesWithMultiplePath.get(0), MessageUtil.COMMON_HEADER_LENGTH);
    final int messageLength = ByteArray.bytesToInt(ByteArray.subByte(updatesWithMultiplePath.get(0), MessageUtil.MARKER_LENGTH, LENGTH_FIELD_LENGTH));
    final Update message = BGPParserTest.updateParser.parseMessageBody(Unpooled.copiedBuffer(body), messageLength, mpConstraint);
    // check fields
    assertNull(message.getWithdrawnRoutes());
    // attributes
    final List<AsNumber> asNumbers = new ArrayList<>();
    asNumbers.add(new AsNumber(Uint32.valueOf(65002)));
    final List<Segments> asPath = new ArrayList<>();
    asPath.add(new SegmentsBuilder().setAsSequence(asNumbers).build());
    final Ipv4NextHopCase nextHop = new Ipv4NextHopCaseBuilder().setIpv4NextHop(new Ipv4NextHopBuilder().setGlobal(new Ipv4AddressNoZone("10.0.0.2")).build()).build();
    final List<Communities> comms = new ArrayList<>();
    comms.add((Communities) CommunityUtil.NO_EXPORT);
    comms.add((Communities) CommunityUtil.NO_ADVERTISE);
    comms.add((Communities) CommunityUtil.NO_EXPORT_SUBCONFED);
    comms.add((Communities) CommunityUtil.create(NoopReferenceCache.getInstance(), 0xFFFF, 0xFF10));
    final UpdateBuilder builder = new UpdateBuilder();
    // check nlri
    final List<Nlri> nlris = new ArrayList<>();
    nlris.add(new NlriBuilder().setPrefix(new Ipv4Prefix("172.17.1.0/24")).setPathId(new PathId(Uint32.ONE)).build());
    nlris.add(new NlriBuilder().setPrefix(new Ipv4Prefix("172.17.1.0/24")).setPathId(new PathId(Uint32.TWO)).build());
    nlris.add(new NlriBuilder().setPrefix(new Ipv4Prefix("172.17.0.0/24")).setPathId(new PathId(Uint32.ONE)).build());
    assertEquals(nlris, message.getNlri());
    builder.setNlri(nlris);
    // 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.setCNextHop(nextHop);
    assertEquals(paBuilder.getCNextHop(), attrs.getCNextHop());
    paBuilder.setMultiExitDisc(new MultiExitDiscBuilder().setMed(Uint32.ZERO).build());
    assertEquals(paBuilder.getMultiExitDisc(), attrs.getMultiExitDisc());
    paBuilder.setAtomicAggregate(new AtomicAggregateBuilder().build());
    assertEquals(paBuilder.getAtomicAggregate(), attrs.getAtomicAggregate());
    paBuilder.setCommunities(comms);
    assertEquals(paBuilder.getCommunities(), attrs.getCommunities());
    paBuilder.setUnrecognizedAttributes(Map.of());
    builder.setAttributes(paBuilder.build());
    assertEquals(builder.build(), message);
    final ByteBuf buffer = Unpooled.buffer();
    BGPParserTest.updateParser.serializeMessage(message, buffer);
    assertArrayEquals(updatesWithMultiplePath.get(0), ByteArray.readAllBytes(buffer));
}