Examples with BgpParameters org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters used on opensource projects

Example 36 with BgpParameters

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters in project bgpcep by opendaylight.

the class BGPOpenMessageParser method parseParameters.

private List<BgpParameters> parseParameters(final ByteBuf buffer, final int length) throws BGPDocumentedException {
    if (length == 0) {
        return ImmutableList.of();
    }
    if (LOG.isTraceEnabled()) {
        LOG.trace("Started parsing of BGP parameter: {} length {}", ByteBufUtil.hexDump(buffer), length);
    }
    final int realLength;
    final OptionalInt extendedLength = extractExtendedLength(buffer, length);
    if (extendedLength.isPresent()) {
        realLength = extendedLength.getAsInt();
        if (realLength < Values.UNSIGNED_BYTE_MAX_VALUE) {
            LOG.debug("Peer used Extended Optional Parameters Length to encode length {}", realLength);
        }
    } else {
        realLength = length;
    }
    // We have determined the real length, we can trim the buffer now
    if (buffer.readableBytes() > realLength) {
        buffer.writerIndex(buffer.readerIndex() + realLength);
        LOG.trace("Truncated BGP parameter buffer to length {}: {}", realLength, ByteBufUtil.hexDump(buffer));
    }
    final int lengthSize = extendedLength.isPresent() ? 1 : 2;
    final List<BgpParameters> params = new ArrayList<>();
    while (buffer.isReadable()) {
        final int paramType = buffer.readUnsignedByte();
        final Optional<ParameterParser> parser = reg.findParser(paramType);
        if (!parser.isPresent()) {
            throw new BGPDocumentedException("Parameter " + paramType + " not supported", BGPError.OPT_PARAM_NOT_SUPPORTED);
        }
        if (buffer.readableBytes() <= lengthSize) {
            throw new BGPDocumentedException("Malformed parameter encountered (" + buffer.readableBytes() + " bytes left)", BGPError.UNSPECIFIC_OPEN_ERROR);
        }
        final int paramLength = extendedLength.isPresent() ? buffer.readUnsignedShort() : buffer.readUnsignedByte();
        final ByteBuf paramBody = buffer.readSlice(paramLength);
        final BgpParameters param;
        try {
            param = parser.get().parseParameter(paramBody);
        } catch (final BGPParsingException e) {
            throw new BGPDocumentedException("Optional parameter not parsed", BGPError.UNSPECIFIC_OPEN_ERROR, e);
        }
        params.add(verifyNotNull(param));
    }
    LOG.trace("Parsed BGP parameters: {}", params);
    return params;
}

Example 37 with BgpParameters

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters in project bgpcep by opendaylight.

the class BGPOpenMessageParser method parseMessageBody.

/**
 * Parses given byte array to BGP Open message.
 *
 * @param body byte array representing BGP Open message, without header
 * @param messageLength the length of the message
 * @return {@link Open} BGP Open Message
 * @throws BGPDocumentedException if the parsing was unsuccessful
 */
@Override
public Open parseMessageBody(final ByteBuf body, final int messageLength, final PeerSpecificParserConstraint constraint) throws BGPDocumentedException {
    checkArgument(body != null, "Buffer cannot be null.");
    if (body.readableBytes() < MIN_MSG_LENGTH) {
        throw BGPDocumentedException.badMessageLength("Open message too small.", messageLength);
    }
    final int version = body.readUnsignedByte();
    if (version != BGP_VERSION) {
        throw new BGPDocumentedException("BGP Protocol version " + version + " not supported.", BGPError.VERSION_NOT_SUPPORTED);
    }
    final AsNumber as = new AsNumber(Uint32.valueOf(body.readUnsignedShort()));
    final Uint16 holdTime = ByteBufUtils.readUint16(body);
    if (Uint16.ONE.equals(holdTime) || Uint16.TWO.equals(holdTime)) {
        throw new BGPDocumentedException("Hold time value not acceptable.", BGPError.HOLD_TIME_NOT_ACC);
    }
    final Ipv4AddressNoZone bgpId;
    try {
        bgpId = Ipv4Util.addressForByteBuf(body);
    } catch (final IllegalArgumentException e) {
        throw new BGPDocumentedException("BGP Identifier is not a valid IPv4 Address", BGPError.BAD_BGP_ID, e);
    }
    final int optLength = body.readUnsignedByte();
    final List<BgpParameters> optParams = parseParameters(body.slice(), optLength);
    LOG.debug("BGP Open message was parsed: AS = {}, holdTimer = {}, bgpId = {}, optParams = {}", as, holdTime, bgpId, optParams);
    return new OpenBuilder().setMyAsNumber(Uint16.valueOf(as.getValue())).setHoldTimer(holdTime).setBgpIdentifier(bgpId).setBgpParameters(optParams).build();
}

Example 38 with BgpParameters

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters in project bgpcep by opendaylight.

the class CapabilityParameterParser method parseParameter.

@Override
public BgpParameters parseParameter(final ByteBuf buffer) throws BGPParsingException, BGPDocumentedException {
    checkArgument(buffer != null && buffer.readableBytes() != 0, "Byte array cannot be null or empty.");
    if (LOG.isTraceEnabled()) {
        LOG.trace("Started parsing of BGP Capabilities: {}", Arrays.toString(ByteArray.getAllBytes(buffer)));
    }
    final List<OptionalCapabilities> optionalCapas = new ArrayList<>();
    while (buffer.isReadable()) {
        final OptionalCapabilities optionalCapa = parseOptionalCapability(buffer);
        if (optionalCapa != null) {
            optionalCapas.add(optionalCapa);
        }
    }
    return new BgpParametersBuilder().setOptionalCapabilities(optionalCapas).build();
}

Example 39 with BgpParameters

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters in project bgpcep by opendaylight.

the class ParserTest method testOpenMessage.

/*
     * ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff <- marker
     * 00 3d <- length (61) - including header
     * 01 <- message type
     * 04 <- BGP version
     * 00 64 <- My AS Number (AS TRANS in this case)
     * 00 b4 <- Hold Time
     * 00 00 00 00 <- BGP Identifier
     * 20 <- Optional Parameters Length
     * 02 <- opt. param. type (capabilities)
     * 06 <- length
     * 01 <- capability code (MP Extensions for BGP4)
     * 04 <- length
     * 00 01 00 01 <- AFI 1, SAFI 1
     * 02 <- opt. param. type (capabilities)
     * 06 <- length
     * 01 <- capability code (MP Extensions for BGP4)
     * 04 <- length
     * 00 02 00 01 <- AFI 2, SAFI 1
     * 02 <- opt. param. type (capabilities)
     * 06 <- length
     * 01 <- capability code (MP Extensions for BGP4)
     * 04 <- length
     * 40 04 00 47 <- AFI 16388, SAFI 71
     * 02 <- opt. param. type (capabilities)
     * 06 <- length
     * 41 <- capability code (AS4 octet support)
     * 04 <- length
     * 00 00 00 64 <- AS number
     */
@Test
public void testOpenMessage() throws Exception {
    final Notification o = msgReg.parseMessage(Unpooled.copiedBuffer(INPUT_BYTES.get(3)), null);
    final Open open = (Open) o;
    final Set<BgpTableType> types = new HashSet<>();
    for (final BgpParameters param : open.getBgpParameters()) {
        for (final OptionalCapabilities optCapa : param.getOptionalCapabilities()) {
            final CParameters cParam = optCapa.getCParameters();
            if (cParam != null && cParam.augmentation(CParameters1.class) != null && cParam.augmentation(CParameters1.class).getMultiprotocolCapability() != null) {
                final MultiprotocolCapability mp = cParam.augmentation(CParameters1.class).getMultiprotocolCapability();
                final BgpTableType type = new BgpTableTypeImpl(mp.getAfi(), mp.getSafi());
                types.add(type);
            }
        }
    }
    final Set<BgpTableType> expected = new HashSet<>();
    expected.add(new BgpTableTypeImpl(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class));
    expected.add(new BgpTableTypeImpl(Ipv6AddressFamily.class, UnicastSubsequentAddressFamily.class));
    expected.add(new BgpTableTypeImpl(LinkstateAddressFamily.class, LinkstateSubsequentAddressFamily.class));
    assertEquals(expected, types);
    final ByteBuf buffer = Unpooled.buffer();
    msgReg.serializeMessage(o, buffer);
    assertArrayEquals(INPUT_BYTES.get(3), ByteArray.readAllBytes(buffer));
}

Example 40 with BgpParameters

use of org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev200120.open.message.BgpParameters in project bgpcep by opendaylight.

the class BGPTestTool method start.

void start(final Arguments arguments) {
    final BGPDispatcher dispatcher = initializeActivator();
    final ArrayList<OptionalCapabilities> optCap = Lists.newArrayList(createMPCapability(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class), createMPCapability(LinkstateAddressFamily.class, LinkstateSubsequentAddressFamily.class), createMPCapability(Ipv4AddressFamily.class, MplsLabeledVpnSubsequentAddressFamily.class), createMPCapability(Ipv6AddressFamily.class, MplsLabeledVpnSubsequentAddressFamily.class), createMPCapability(Ipv4AddressFamily.class, McastMplsLabeledVpnSubsequentAddressFamily.class), createMPCapability(Ipv6AddressFamily.class, McastMplsLabeledVpnSubsequentAddressFamily.class), createMPCapability(L2vpnAddressFamily.class, EvpnSubsequentAddressFamily.class), createMPCapability(Ipv4AddressFamily.class, RouteTargetConstrainSubsequentAddressFamily.class), createAs4BytesMPCapability(arguments.getAs()));
    if (arguments.getMultiPathSupport()) {
        optCap.add(createAddPathCapability());
    }
    final BgpParameters bgpParameters = createBgpParameters(optCap);
    final InetSocketAddress localAddress = arguments.getLocalAddresses();
    final int port = localAddress.getPort();
    InetAddress address = localAddress.getAddress();
    int numberOfSpeakers = arguments.getSpeakerCount();
    do {
        final BGPSessionListener sessionListener = new TestingListener(arguments.getNumberOfPrefixes(), arguments.getExtendedCommunities(), arguments.getMultiPathSupport());
        this.listeners.put(address.getHostAddress(), sessionListener);
        createPeer(dispatcher, arguments, new InetSocketAddress(address, port), sessionListener, bgpParameters);
        numberOfSpeakers--;
        address = InetAddresses.increment(address);
    } while (numberOfSpeakers > 0);
}