Examples with Bgp org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp used on opensource projects

Example 61 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class BGPOpenMessageParser method serializeMessage.

/**
 * Serializes given BGP Open message to byte array, without the header.
 *
 * @param msg BGP Open message to be serialized.
 * @param bytes ByteBuf where the message will be serialized
 */
@Override
public void serializeMessage(final Notification msg, final ByteBuf bytes) {
    Preconditions.checkArgument(msg instanceof Open, "Message needs to be of type Open");
    final Open open = (Open) msg;
    final ByteBuf msgBody = Unpooled.buffer();
    msgBody.writeByte(BGP_VERSION);
    // When our AS number does not fit into two bytes, we report it as AS_TRANS
    int openAS = open.getMyAsNumber();
    if (openAS > Values.UNSIGNED_SHORT_MAX_VALUE) {
        openAS = AS_TRANS;
    }
    msgBody.writeShort(openAS);
    msgBody.writeShort(open.getHoldTimer());
    msgBody.writeBytes(Ipv4Util.bytesForAddress(open.getBgpIdentifier()));
    final ByteBuf paramsBuffer = Unpooled.buffer();
    if (open.getBgpParameters() != null) {
        for (final BgpParameters param : open.getBgpParameters()) {
            this.reg.serializeParameter(param, paramsBuffer);
        }
    }
    msgBody.writeByte(paramsBuffer.writerIndex());
    msgBody.writeBytes(paramsBuffer);
    MessageUtil.formatMessage(TYPE, msgBody, bytes);
}

Example 62 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class BGPRouteRefreshMessageParser method parseMessageBody.

/**
 * Parses BGP Route Refresh message to bytes.
 *
 * @param body ByteBuf to be parsed
 * @param messageLength the length of the message
 * @return {@link RouteRefresh} which represents BGP notification message
 * @throws BGPDocumentedException if parsing goes wrong
 */
@Override
public RouteRefresh parseMessageBody(final ByteBuf body, final int messageLength) throws BGPDocumentedException {
    Preconditions.checkArgument(body != null, "Body buffer cannot be null.");
    if (body.readableBytes() < TRIPLET_BYTE_SIZE) {
        throw BGPDocumentedException.badMessageLength("RouteRefresh message is too small.", messageLength);
    }
    final Optional<BgpTableType> parsedAfiSafi = MultiprotocolCapabilitiesUtil.parseMPAfiSafi(body, this.afiReg, this.safiReg);
    if (!parsedAfiSafi.isPresent()) {
        throw new BGPDocumentedException("Unsupported afi/safi in Route Refresh message.", BGPError.WELL_KNOWN_ATTR_NOT_RECOGNIZED);
    }
    return new RouteRefreshBuilder(parsedAfiSafi.get()).build();
}

Example 63 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp 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;
}

Example 64 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class CapabilityParameterParser method parseParameter.

@Override
public BgpParameters parseParameter(final ByteBuf buffer) throws BGPParsingException, BGPDocumentedException {
    Preconditions.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 = Lists.newArrayList();
    while (buffer.isReadable()) {
        final OptionalCapabilities optionalCapa = parseOptionalCapability(buffer);
        if (optionalCapa != null) {
            optionalCapas.add(optionalCapa);
        }
    }
    return new BgpParametersBuilder().setOptionalCapabilities(optionalCapas).build();
}

Example 65 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class CapabilityParameterParser method serializeOptionalCapability.

private void serializeOptionalCapability(final OptionalCapabilities optionalCapa, final ByteBuf byteAggregator) {
    if (optionalCapa.getCParameters() != null) {
        final CParameters cap = optionalCapa.getCParameters();
        final ByteBuf bytes = Unpooled.buffer();
        this.reg.serializeCapability(cap, bytes);
        Preconditions.checkArgument(bytes != null, "Unhandled capability class %s", cap.getImplementedInterface());
        if (LOG.isTraceEnabled()) {
            LOG.trace("BGP capability serialized to: {}", ByteBufUtil.hexDump(bytes));
        }
        byteAggregator.writeBytes(bytes);
    }
}