2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.protocol.bgp.rib.impl;
10 import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isAnnounceNone;
11 import static org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.isLearnNone;
13 import com.google.common.base.MoreObjects;
14 import com.google.common.base.MoreObjects.ToStringHelper;
15 import com.google.common.base.Preconditions;
16 import com.google.common.collect.ImmutableMap;
17 import com.google.common.net.InetAddresses;
18 import java.util.ArrayList;
19 import java.util.Arrays;
20 import java.util.HashMap;
21 import java.util.HashSet;
22 import java.util.List;
24 import java.util.Optional;
26 import java.util.stream.Collectors;
27 import javax.annotation.concurrent.GuardedBy;
28 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeMXBean;
29 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistration;
30 import org.opendaylight.controller.config.yang.bgp.rib.impl.BGPPeerRuntimeRegistrator;
31 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpPeerState;
32 import org.opendaylight.controller.config.yang.bgp.rib.impl.BgpSessionState;
33 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
34 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
35 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
36 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
37 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.RoutedRpcRegistration;
38 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
39 import org.opendaylight.protocol.bgp.parser.BGPDocumentedException;
40 import org.opendaylight.protocol.bgp.parser.BGPError;
41 import org.opendaylight.protocol.bgp.parser.impl.message.update.LocalPreferenceAttributeParser;
42 import org.opendaylight.protocol.bgp.parser.spi.MessageUtil;
43 import org.opendaylight.protocol.bgp.rib.impl.spi.RIB;
44 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
45 import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPPeerStats;
46 import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPPeerStatsImpl;
47 import org.opendaylight.protocol.bgp.rib.impl.stats.peer.BGPSessionStats;
48 import org.opendaylight.protocol.bgp.rib.spi.BGPSession;
49 import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener;
50 import org.opendaylight.protocol.bgp.rib.spi.BGPTerminationReason;
51 import org.opendaylight.protocol.bgp.rib.spi.ExportPolicyPeerTracker;
52 import org.opendaylight.protocol.bgp.rib.spi.IdentifierUtils;
53 import org.opendaylight.protocol.bgp.rib.spi.Peer;
54 import org.opendaylight.protocol.bgp.rib.spi.RouterIds;
55 import org.opendaylight.protocol.concepts.AbstractRegistration;
56 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Prefix;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.DestinationIpv4Builder;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4Prefixes;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.ipv4.prefixes.destination.ipv4.Ipv4PrefixesBuilder;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.reach.nlri.advertized.routes.destination.type.DestinationIpv4CaseBuilder;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.Update;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.Attributes;
63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.message.rev130919.path.attributes.AttributesBuilder;
64 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpAddPathTableType;
65 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.BgpTableType;
66 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.RouteRefresh;
67 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.SendReceive;
68 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.mp.capabilities.add.path.capability.AddressFamilies;
69 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlri;
70 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpReachNlriBuilder;
71 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlri;
72 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.MpUnreachNlriBuilder;
73 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.reach.nlri.AdvertizedRoutesBuilder;
74 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.multiprotocol.rev130919.update.attributes.mp.unreach.nlri.WithdrawnRoutesBuilder;
75 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.BgpPeerRpcService;
76 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.peer.rpc.rev160322.PeerContext;
77 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerId;
78 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.PeerRole;
79 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.SimpleRoutingPolicy;
80 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.PeerKey;
81 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.rib.TablesKey;
82 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.AddressFamily;
83 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.Ipv4AddressFamily;
84 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.SubsequentAddressFamily;
85 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.types.rev130919.UnicastSubsequentAddressFamily;
86 import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
87 import org.opendaylight.yangtools.yang.binding.Notification;
88 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
89 import org.slf4j.Logger;
90 import org.slf4j.LoggerFactory;
93 * Class representing a peer. We have a single instance for each peer, which provides translation from BGP events into
96 public class BGPPeer implements BGPSessionListener, Peer, AutoCloseable, BGPPeerRuntimeMXBean, TransactionChainListener {
98 private static final Logger LOG = LoggerFactory.getLogger(BGPPeer.class);
101 private final Set<TablesKey> tables = new HashSet<>();
103 private BGPSession session;
105 private byte[] rawIdentifier;
107 private DOMTransactionChain chain;
109 private AdjRibInWriter ribWriter;
111 private EffectiveRibInWriter effRibInWriter;
113 private final RIB rib;
114 private final String name;
115 private BGPPeerRuntimeRegistrator registrator;
116 private BGPPeerRuntimeRegistration runtimeReg;
117 private final Map<TablesKey, AdjRibOutListener> adjRibOutListenerSet = new HashMap();
118 private final RpcProviderRegistry rpcRegistry;
119 private RoutedRpcRegistration<BgpPeerRpcService> rpcRegistration;
120 private final PeerRole peerRole;
121 private final Optional<SimpleRoutingPolicy> simpleRoutingPolicy;
122 private final BGPPeerStats peerStats;
123 private YangInstanceIdentifier peerIId;
124 private final Set<AbstractRegistration> tableRegistration = new HashSet<>();
126 public BGPPeer(final String name, final RIB rib, final PeerRole role, final SimpleRoutingPolicy peerStatus, final RpcProviderRegistry rpcRegistry) {
127 this.peerRole = role;
128 this.simpleRoutingPolicy = Optional.ofNullable(peerStatus);
129 this.rib = Preconditions.checkNotNull(rib);
131 this.rpcRegistry = rpcRegistry;
132 this.peerStats = new BGPPeerStatsImpl(this.name, this.tables);
134 // add current peer to "configured BGP peer" stats
135 this.rib.getRenderStats().getConfiguredPeerCounter().increaseCount();
136 this.chain = rib.createPeerChain(this);
139 public BGPPeer(final String name, final RIB rib, final PeerRole role, final RpcProviderRegistry rpcRegistry) {
140 this(name, rib, role, null, rpcRegistry);
143 public void instantiateServiceInstance() {
144 this.ribWriter = AdjRibInWriter.create(rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain);
148 public synchronized void close() {
154 public void onMessage(final BGPSession session, final Notification msg) throws BGPDocumentedException {
155 if (!(msg instanceof Update) && !(msg instanceof RouteRefresh)) {
156 LOG.info("Ignoring unhandled message class {}", msg.getClass());
159 if (msg instanceof Update) {
160 onUpdateMessage((Update) msg);
162 onRouteRefreshMessage((RouteRefresh) msg, session);
166 private void onRouteRefreshMessage(final RouteRefresh message, final BGPSession session) {
167 final Class<? extends AddressFamily> rrAfi = message.getAfi();
168 final Class<? extends SubsequentAddressFamily> rrSafi = message.getSafi();
170 final TablesKey key = new TablesKey(rrAfi, rrSafi);
171 final AdjRibOutListener listener = this.adjRibOutListenerSet.get(key);
172 if (listener != null) {
174 this.adjRibOutListenerSet.remove(key);
175 createAdjRibOutListener(RouterIds.createPeerId(session.getBgpId()), key, listener.isMpSupported());
177 LOG.info("Ignoring RouteRefresh message. Afi/Safi is not supported: {}, {}.", rrAfi, rrSafi);
182 * Check for presence of well known mandatory attribute LOCAL_PREF in Update message
184 * @param message Update message
185 * @throws BGPDocumentedException
187 private void checkMandatoryAttributesPresence(final Update message) throws BGPDocumentedException {
188 if (MessageUtil.isAnyNlriPresent(message)) {
189 final Attributes attrs = message.getAttributes();
190 if (this.peerRole == PeerRole.Ibgp && (attrs == null || attrs.getLocalPref() == null)) {
191 throw new BGPDocumentedException(BGPError.MANDATORY_ATTR_MISSING_MSG + "LOCAL_PREF",
192 BGPError.WELL_KNOWN_ATTR_MISSING,
193 new byte[] { LocalPreferenceAttributeParser.TYPE });
199 * Process Update message received.
200 * Calls {@link #checkMandatoryAttributesPresence(Update)} to check for presence of mandatory attributes.
202 * @param message Update message
203 * @throws BGPDocumentedException
205 private void onUpdateMessage(final Update message) throws BGPDocumentedException {
206 checkMandatoryAttributesPresence(message);
209 final Attributes attrs = message.getAttributes();
210 MpReachNlri mpReach = null;
211 final boolean isAnyNlriAnnounced = message.getNlri() != null;
212 if (isAnyNlriAnnounced) {
213 mpReach = prefixesToMpReach(message);
215 mpReach = MessageUtil.getMpReachNlri(attrs);
217 if (mpReach != null) {
218 this.ribWriter.updateRoutes(mpReach, nextHopToAttribute(attrs, mpReach));
220 MpUnreachNlri mpUnreach = null;
221 if (message.getWithdrawnRoutes() != null) {
222 mpUnreach = prefixesToMpUnreach(message, isAnyNlriAnnounced);
224 mpUnreach = MessageUtil.getMpUnreachNlri(attrs);
226 if (mpUnreach != null) {
227 this.ribWriter.removeRoutes(mpUnreach);
231 private static Attributes nextHopToAttribute(final Attributes attrs, final MpReachNlri mpReach) {
232 if (attrs.getCNextHop() == null && mpReach.getCNextHop() != null) {
233 final AttributesBuilder attributesBuilder = new AttributesBuilder(attrs);
234 attributesBuilder.setCNextHop(mpReach.getCNextHop());
235 return attributesBuilder.build();
241 * Creates MPReach for the prefixes to be handled in the same way as linkstate routes
243 * @param message Update message containing prefixes in NLRI
244 * @return MpReachNlri with prefixes from the nlri field
246 private static MpReachNlri prefixesToMpReach(final Update message) {
247 final List<Ipv4Prefixes> prefixes = new ArrayList<>();
248 for (final Ipv4Prefix p : message.getNlri().getNlri()) {
249 prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build());
251 final MpReachNlriBuilder b = new MpReachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(
252 UnicastSubsequentAddressFamily.class).setAdvertizedRoutes(
253 new AdvertizedRoutesBuilder().setDestinationType(
254 new DestinationIpv4CaseBuilder().setDestinationIpv4(
255 new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build());
256 if (message.getAttributes() != null) {
257 b.setCNextHop(message.getAttributes().getCNextHop());
263 * Create MPUnreach for the prefixes to be handled in the same way as linkstate routes
265 * @param message Update message containing withdrawn routes
266 * @param isAnyNlriAnnounced
267 * @return MpUnreachNlri with prefixes from the withdrawn routes field
269 private static MpUnreachNlri prefixesToMpUnreach(final Update message, final boolean isAnyNlriAnnounced) {
270 final List<Ipv4Prefixes> prefixes = new ArrayList<>();
271 for (final Ipv4Prefix p : message.getWithdrawnRoutes().getWithdrawnRoutes()) {
272 boolean nlriAnounced = false;
273 if(isAnyNlriAnnounced) {
274 nlriAnounced = message.getNlri().getNlri().contains(p);
278 prefixes.add(new Ipv4PrefixesBuilder().setPrefix(p).build());
281 return new MpUnreachNlriBuilder().setAfi(Ipv4AddressFamily.class).setSafi(UnicastSubsequentAddressFamily.class).setWithdrawnRoutes(
282 new WithdrawnRoutesBuilder().setDestinationType(
283 new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.inet.rev150305.update.attributes.mp.unreach.nlri.withdrawn.routes.destination.type.DestinationIpv4CaseBuilder().setDestinationIpv4(
284 new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build()).build()).build()).build();
288 public synchronized void onSessionUp(final BGPSession session) {
289 final List<AddressFamilies> addPathTablesType = session.getAdvertisedAddPathTableTypes();
290 final Set<BgpTableType> advertizedTableTypes = session.getAdvertisedTableTypes();
291 LOG.info("Session with peer {} went up with tables {} and Add Path tables {}", this.name, advertizedTableTypes, addPathTablesType);
292 this.session = session;
294 this.rawIdentifier = InetAddresses.forString(session.getBgpId().getValue()).getAddress();
295 final PeerId peerId = RouterIds.createPeerId(session.getBgpId());
297 this.tables.addAll(advertizedTableTypes.stream().map(t -> new TablesKey(t.getAfi(), t.getSafi())).collect(Collectors.toList()));
298 final boolean announceNone = isAnnounceNone(this.simpleRoutingPolicy);
299 final Map<TablesKey, SendReceive> addPathTableMaps = mapTableTypesFamilies(addPathTablesType);
300 this.peerIId = this.rib.getYangRibId().node(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer.QNAME)
301 .node(IdentifierUtils.domPeerId(peerId));
304 createAdjRibOutListener(peerId);
306 this.tables.forEach(tablesKey -> {
307 final ExportPolicyPeerTracker exportTracker = this.rib.getExportPolicyPeerTracker(tablesKey);
308 if (exportTracker != null) {
309 this.tableRegistration.add(exportTracker.registerPeer(peerId, addPathTableMaps.get(tablesKey), this.peerIId, this.peerRole,
310 this.simpleRoutingPolicy));
313 addBgp4Support(peerId, announceNone);
315 if(!isLearnNone(this.simpleRoutingPolicy)) {
316 this.effRibInWriter = EffectiveRibInWriter.create(this.rib.getService(), this.rib.createPeerChain(this), this.peerIId,
317 this.rib.getImportPolicyPeerTracker(), this.rib.getRibSupportContext(), this.peerRole,
318 this.peerStats.getEffectiveRibInRouteCounters(), this.peerStats.getAdjRibInRouteCounters());
320 this.ribWriter = this.ribWriter.transform(peerId, this.rib.getRibSupportContext(), this.tables, addPathTableMaps);
322 // register BGP Peer stats
323 this.peerStats.getSessionEstablishedCounter().increaseCount();
324 if (this.registrator != null) {
325 this.runtimeReg = this.registrator.register(this);
328 if (this.rpcRegistry != null) {
329 this.rpcRegistration = this.rpcRegistry.addRoutedRpcImplementation(BgpPeerRpcService.class, new BgpPeerRpc(session, this.tables));
330 final KeyedInstanceIdentifier<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer, PeerKey> path =
331 this.rib.getInstanceIdentifier().child(org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev130925.bgp.rib.rib.Peer.class, new PeerKey(peerId));
332 this.rpcRegistration.registerPath(PeerContext.class, path);
335 this.rib.getRenderStats().getConnectedPeerCounter().increaseCount();
338 private void createAdjRibOutListener(final PeerId peerId) {
339 this.tables.forEach(key->createAdjRibOutListener(peerId, key, true));
342 //try to add a support for old-school BGP-4, if peer did not advertise IPv4-Unicast MP capability
343 private void addBgp4Support(final PeerId peerId, final boolean announceNone) {
344 final TablesKey key = new TablesKey(Ipv4AddressFamily.class, UnicastSubsequentAddressFamily.class);
345 if (this.tables.add(key) && !announceNone) {
346 createAdjRibOutListener(peerId, key, false);
350 private void createAdjRibOutListener(final PeerId peerId, final TablesKey key, final boolean mpSupport) {
351 final RIBSupportContext context = this.rib.getRibSupportContext().getRIBSupportContext(key);
353 // not particularly nice
354 if (context != null && this.session instanceof BGPSessionImpl) {
355 this.adjRibOutListenerSet.put(key, AdjRibOutListener.create(peerId, key, this.rib.getYangRibId(), this.rib.getCodecsRegistry(),
356 context.getRibSupport(), this.rib.getService(), ((BGPSessionImpl) this.session).getLimiter(), mpSupport,
357 this.peerStats.getAdjRibOutRouteCounters().init(key)));
361 private void cleanup() {
362 // FIXME: BUG-196: support graceful
363 this.adjRibOutListenerSet.values().forEach(AdjRibOutListener::close);
364 this.adjRibOutListenerSet.clear();
365 if (this.effRibInWriter != null) {
366 this.effRibInWriter.close();
368 if(this.ribWriter != null) {
369 this.ribWriter.removePeer();
375 public void onSessionDown(final BGPSession session, final Exception e) {
376 if(e.getMessage().equals(BGPSessionImpl.END_OF_INPUT)) {
377 LOG.info("Session with peer {} went down", this.name);
379 LOG.info("Session with peer {} went down", this.name, e);
385 public void onSessionTerminated(final BGPSession session, final BGPTerminationReason cause) {
386 LOG.info("Session with peer {} terminated: {}", this.name, cause);
391 public String toString() {
392 return addToStringAttributes(MoreObjects.toStringHelper(this)).toString();
395 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
396 toStringHelper.add("name", this.name);
397 toStringHelper.add("tables", this.tables);
398 return toStringHelper;
402 public String getName() {
408 public synchronized void releaseConnection() {
409 if (this.rpcRegistration != null) {
410 this.rpcRegistration.close();
417 private void closeRegistration() {
418 for (final AbstractRegistration tableCloseable : this.tableRegistration) {
419 tableCloseable.close();
421 this.tableRegistration.clear();
424 private void dropConnection() {
425 if (this.runtimeReg != null) {
426 this.runtimeReg.close();
427 this.runtimeReg = null;
429 if (this.session != null) {
431 this.session.close();
432 } catch (final Exception e) {
433 LOG.warn("Error closing session with peer", e);
437 this.rib.getRenderStats().getConnectedPeerCounter().decreaseCount();
442 public synchronized byte[] getRawIdentifier() {
443 return Arrays.copyOf(this.rawIdentifier, this.rawIdentifier.length);
447 public void resetSession() {
452 public void resetStats() {
453 if (this.session instanceof BGPSessionStats) {
454 ((BGPSessionStats) this.session).resetBgpSessionStats();
459 public BgpSessionState getBgpSessionState() {
460 if (this.session instanceof BGPSessionStats) {
461 return ((BGPSessionStats) this.session).getBgpSessionState();
463 return new BgpSessionState();
467 public synchronized BgpPeerState getBgpPeerState() {
468 return this.peerStats.getBgpPeerState();
472 public void onTransactionChainFailed(final TransactionChain<?, ?> chain, final AsyncTransaction<?, ?> transaction, final Throwable cause) {
473 LOG.error("Transaction chain failed.", cause);
475 this.chain = this.rib.createPeerChain(this);
476 this.ribWriter = AdjRibInWriter.create(this.rib.getYangRibId(), this.peerRole, this.simpleRoutingPolicy, this.chain);
481 public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
482 LOG.debug("Transaction chain {} successfull.", chain);
486 public void markUptodate(final TablesKey tablesKey) {
487 this.ribWriter.markTableUptodate(tablesKey);
490 private static Map<TablesKey, SendReceive> mapTableTypesFamilies(final List<AddressFamilies> addPathTablesType) {
491 return ImmutableMap.copyOf(addPathTablesType.stream().collect(Collectors.toMap(af -> new TablesKey(af.getAfi(), af.getSafi()),
492 BgpAddPathTableType::getSendReceive)));