2 * Copyright (c) 2013 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.bgpcep.pcep.topology.provider;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.base.Optional;
13 import com.google.common.base.Preconditions;
14 import com.google.common.util.concurrent.FutureCallback;
15 import com.google.common.util.concurrent.Futures;
16 import com.google.common.util.concurrent.ListenableFuture;
17 import com.google.common.util.concurrent.MoreExecutors;
18 import io.netty.util.concurrent.FutureListener;
19 import java.net.InetAddress;
20 import java.util.ArrayList;
21 import java.util.Collection;
22 import java.util.HashMap;
23 import java.util.List;
25 import java.util.Map.Entry;
26 import java.util.Objects;
27 import java.util.Timer;
28 import java.util.TimerTask;
29 import java.util.concurrent.TimeUnit;
30 import java.util.concurrent.atomic.AtomicBoolean;
31 import javax.annotation.concurrent.GuardedBy;
32 import org.opendaylight.bgpcep.pcep.topology.provider.session.stats.SessionStateImpl;
33 import org.opendaylight.bgpcep.pcep.topology.provider.session.stats.TopologySessionStats;
34 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
35 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
36 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
37 import org.opendaylight.protocol.pcep.PCEPCloseTermination;
38 import org.opendaylight.protocol.pcep.PCEPSession;
39 import org.opendaylight.protocol.pcep.PCEPTerminationReason;
40 import org.opendaylight.protocol.pcep.TerminationReason;
41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressBuilder;
42 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev171025.LspObject;
43 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev171025.Path1;
44 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.ietf.stateful.rev171025.lsp.object.Lsp;
45 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Message;
46 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.MessageHeader;
47 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Object;
48 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.ProtocolVersion;
49 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.LspId;
50 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.Node1;
51 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.Node1Builder;
52 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.OperationResult;
53 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.PccSyncState;
54 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.TearDownSessionInput;
55 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.lsp.metadata.Metadata;
56 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.PathComputationClient;
57 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.PathComputationClientBuilder;
58 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.path.computation.client.ReportedLsp;
59 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.path.computation.client.ReportedLspBuilder;
60 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.path.computation.client.ReportedLspKey;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev171025.pcep.client.attributes.path.computation.client.reported.lsp.Path;
62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
63 import org.opendaylight.yangtools.yang.binding.DataContainer;
64 import org.opendaylight.yangtools.yang.binding.DataObject;
65 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
66 import org.opendaylight.yangtools.yang.common.RpcResult;
67 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
68 import org.slf4j.Logger;
69 import org.slf4j.LoggerFactory;
72 * Base class for PCEP topology providers. It handles the common tasks involved in managing a PCEP server (PCE)
73 * endpoint, and exposing a network topology based on it. It needs to be subclassed to form a fully functional block,
74 * where the subclass provides handling of incoming messages.
76 * @param <S> identifier type of requests
77 * @param <L> identifier type for LSPs
79 public abstract class AbstractTopologySessionListener<S, L> implements TopologySessionListener, TopologySessionStats {
80 static final MessageHeader MESSAGE_HEADER = new MessageHeader() {
81 private final ProtocolVersion version = new ProtocolVersion((short) 1);
84 public Class<? extends DataContainer> getImplementedInterface() {
85 return MessageHeader.class;
89 public ProtocolVersion getVersion() {
93 static final String MISSING_XML_TAG = "Mandatory XML tags are missing.";
94 private static final Logger LOG = LoggerFactory.getLogger(AbstractTopologySessionListener.class);
96 final Map<L, String> lsps = new HashMap<>();
98 final SessionStateImpl listenerState;
100 private final Map<S, PCEPRequest> requests = new HashMap<>();
102 private final Map<String, ReportedLsp> lspData = new HashMap<>();
103 private final ServerSessionManager serverSessionManager;
104 private InstanceIdentifier<PathComputationClient> pccIdentifier;
106 private TopologyNodeState nodeState;
107 private AtomicBoolean synced = new AtomicBoolean(false);
109 private PCEPSession session;
111 private SyncOptimization syncOptimization;
113 private boolean triggeredResyncInProcess;
115 AbstractTopologySessionListener(final ServerSessionManager serverSessionManager) {
116 this.serverSessionManager = requireNonNull(serverSessionManager);
117 this.listenerState = new SessionStateImpl(this);
121 public final synchronized void onSessionUp(final PCEPSession session) {
123 * The session went up. Look up the router in Inventory model,
124 * create it if it is not there (marking that fact for later
125 * deletion), and mark it as synchronizing. Also create it in
126 * the topology model, with empty LSP list.
128 final InetAddress peerAddress = session.getRemoteAddress();
130 this.syncOptimization = new SyncOptimization(session);
132 final TopologyNodeState state = this.serverSessionManager.takeNodeState(peerAddress,
133 this, isLspDbRetreived());
135 // takeNodeState(..) may fail when the server session manager is being restarted due to configuration change
137 LOG.error("Unable to fetch topology node state for PCEP session. Closing session {}", session);
138 session.close(TerminationReason.UNKNOWN);
139 this.onSessionTerminated(session, new PCEPCloseTermination(TerminationReason.UNKNOWN));
143 if (this.session != null || this.nodeState != null) {
144 LOG.error("PCEP session is already up with {}. Closing session {}", session.getRemoteAddress(), session);
145 session.close(TerminationReason.UNKNOWN);
146 this.onSessionTerminated(session, new PCEPCloseTermination(TerminationReason.UNKNOWN));
149 this.session = session;
150 this.nodeState = state;
151 this.serverSessionManager.bind(this.nodeState.getNodeId(), this.listenerState);
153 LOG.trace("Peer {} resolved to topology node {}", peerAddress, state.getNodeId());
155 // Our augmentation in the topology node
156 final PathComputationClientBuilder pccBuilder = new PathComputationClientBuilder();
158 onSessionUp(session, pccBuilder);
159 this.synced.set(isSynchronized());
161 pccBuilder.setIpAddress(IpAddressBuilder.getDefaultInstance(peerAddress.getHostAddress()));
162 final InstanceIdentifier<Node1> topologyAugment = state.getNodeId().augmentation(Node1.class);
163 this.pccIdentifier = topologyAugment.child(PathComputationClient.class);
164 final Node initialNodeState = state.getInitialNodeState();
165 final boolean isNodePresent = isLspDbRetreived() && initialNodeState != null;
167 loadLspData(initialNodeState, this.lspData, this.lsps, isIncrementalSynchro());
168 pccBuilder.setReportedLsp(initialNodeState.getAugmentation(Node1.class)
169 .getPathComputationClient().getReportedLsp());
171 writeNode(pccBuilder, state, topologyAugment);
172 this.listenerState.init(session);
173 LOG.info("Session with {} attached to topology node {}", session.getRemoteAddress(), state.getNodeId());
176 private void writeNode(final PathComputationClientBuilder pccBuilder, final TopologyNodeState state,
177 final InstanceIdentifier<Node1> topologyAugment) {
178 final Node1 ta = new Node1Builder().setPathComputationClient(pccBuilder.build()).build();
180 final ReadWriteTransaction trans = state.rwTransaction();
181 trans.put(LogicalDatastoreType.OPERATIONAL, topologyAugment, ta);
182 LOG.trace("Peer data {} set to {}", topologyAugment, ta);
184 // All set, commit the modifications
185 Futures.addCallback(trans.submit(), new FutureCallback<Void>() {
187 public void onSuccess(final Void result) {
188 LOG.trace("Internal state for session {} updated successfully",
189 AbstractTopologySessionListener.this.session);
193 public void onFailure(final Throwable throwable) {
194 LOG.error("Failed to update internal state for session {}, terminating it",
195 AbstractTopologySessionListener.this.session, throwable);
196 AbstractTopologySessionListener.this.session.close(TerminationReason.UNKNOWN);
198 }, MoreExecutors.directExecutor());
201 synchronized void updatePccState(final PccSyncState pccSyncState) {
202 if (this.nodeState == null) {
203 LOG.info("Server Session Manager is closed.");
204 AbstractTopologySessionListener.this.session.close(TerminationReason.UNKNOWN);
207 final MessageContext ctx = new MessageContext(this.nodeState.beginTransaction());
208 updatePccNode(ctx, new PathComputationClientBuilder().setStateSync(pccSyncState).build());
209 if (pccSyncState != PccSyncState.Synchronized) {
210 this.synced.set(false);
211 this.triggeredResyncInProcess = true;
213 // All set, commit the modifications
214 Futures.addCallback(ctx.trans.submit(), new FutureCallback<Void>() {
216 public void onSuccess(final Void result) {
217 LOG.trace("Internal state for session {} updated successfully",
218 AbstractTopologySessionListener.this.session);
222 public void onFailure(final Throwable throwable) {
223 LOG.error("Failed to update internal state for session {}",
224 AbstractTopologySessionListener.this.session, throwable);
225 AbstractTopologySessionListener.this.session.close(TerminationReason.UNKNOWN);
227 }, MoreExecutors.directExecutor());
230 synchronized boolean isTriggeredSyncInProcess() {
231 return this.triggeredResyncInProcess;
235 * Tear down the given PCEP session. It's OK to call this method even after the session
236 * is already down. It always clear up the current session status.
239 @SuppressWarnings("checkstyle:IllegalCatch")
240 private synchronized void tearDown(final PCEPSession session) {
242 requireNonNull(session);
243 this.serverSessionManager.releaseNodeState(this.nodeState, session, isLspDbPersisted());
247 if (this.session != null) {
248 this.session.close();
251 } catch (final Exception e) {
252 LOG.error("Session {} cannot be closed.", session, e);
255 this.syncOptimization = null;
257 // Clear all requests we know about
258 for (final Entry<S, PCEPRequest> e : this.requests.entrySet()) {
259 final PCEPRequest r = e.getValue();
260 switch (r.getState()) {
262 // Done is done, nothing to do
263 LOG.trace("Request {} was done when session went down.", e.getKey());
266 // Peer has not acked: results in failure
267 LOG.info("Request {} was incomplete when session went down, failing the instruction", e.getKey());
268 r.done(OperationResults.NOACK);
271 // Peer has not been sent to the peer: results in cancellation
272 LOG.debug("Request {} was not sent when session went down, cancelling the instruction", e.getKey());
273 r.done(OperationResults.UNSENT);
279 this.requests.clear();
283 public final synchronized void onSessionDown(final PCEPSession session, final Exception exception) {
284 LOG.warn("Session {} went down unexpectedly", session, exception);
289 public final synchronized void onSessionTerminated(final PCEPSession session, final PCEPTerminationReason reason) {
290 LOG.info("Session {} terminated by peer with reason {}", session, reason);
295 public final synchronized void onMessage(final PCEPSession session, final Message message) {
296 if (this.nodeState == null) {
297 LOG.warn("Topology node state is null. Unhandled message {} on session {}", message, session);
298 session.close(TerminationReason.UNKNOWN);
301 final MessageContext ctx = new MessageContext(this.nodeState.beginTransaction());
303 if (onMessage(ctx, message)) {
304 LOG.warn("Unhandled message {} on session {}", message, session);
305 //cancel not supported, submit empty transaction
310 Futures.addCallback(ctx.trans.submit(), new FutureCallback<Void>() {
312 public void onSuccess(final Void result) {
313 LOG.trace("Internal state for session {} updated successfully", session);
314 ctx.notifyRequests();
318 public void onFailure(final Throwable throwable) {
319 LOG.error("Failed to update internal state for session {}, closing it", session, throwable);
320 ctx.notifyRequests();
321 session.close(TerminationReason.UNKNOWN);
323 }, MoreExecutors.directExecutor());
327 public synchronized void close() {
329 if (this.session != null) {
330 LOG.info("Closing session {}", session);
331 this.session.close(TerminationReason.UNKNOWN);
335 private synchronized void clearNodeState() {
336 if (this.nodeState != null) {
337 this.serverSessionManager.unbind(this.nodeState.getNodeId());
338 this.nodeState = null;
342 final synchronized PCEPRequest removeRequest(final S id) {
343 final PCEPRequest ret = this.requests.remove(id);
345 this.listenerState.processRequestStats(ret.getElapsedMillis());
347 LOG.trace("Removed request {} object {}", id, ret);
351 final synchronized ListenableFuture<OperationResult> sendMessage(final Message message, final S requestId,
352 final Metadata metadata) {
353 final io.netty.util.concurrent.Future<Void> f = this.session.sendMessage(message);
354 this.listenerState.updateStatefulSentMsg(message);
355 final PCEPRequest req = new PCEPRequest(metadata);
356 this.requests.put(requestId, req);
357 final short rpcTimeout = this.serverSessionManager.getRpcTimeout();
358 LOG.trace("RPC response timeout value is {} seconds", rpcTimeout);
359 if (rpcTimeout > 0) {
360 setupTimeoutHandler(requestId, req, rpcTimeout);
363 f.addListener((FutureListener<Void>) future -> {
364 if (!future.isSuccess()) {
365 synchronized (AbstractTopologySessionListener.this) {
366 AbstractTopologySessionListener.this.requests.remove(requestId);
368 req.done(OperationResults.UNSENT);
369 LOG.info("Failed to send request {}, instruction cancelled", requestId, future.cause());
372 LOG.trace("Request {} sent to peer (object {})", requestId, req);
376 return req.getFuture();
379 private void setupTimeoutHandler(final S requestId, final PCEPRequest req, final short timeout) {
380 final Timer timer = req.getTimer();
381 timer.schedule(new TimerTask() {
384 synchronized (AbstractTopologySessionListener.this) {
385 AbstractTopologySessionListener.this.requests.remove(requestId);
388 LOG.info("Request {} timed-out waiting for response", requestId);
390 }, TimeUnit.SECONDS.toMillis(timeout));
391 LOG.trace("Set up response timeout handler for request {}", requestId);
395 * Update an LSP in the data store.
397 * @param ctx Message context
398 * @param id Revision-specific LSP identifier
399 * @param lspName LSP name
400 * @param rlb Reported LSP builder
401 * @param solicited True if the update was solicited
402 * @param remove True if this is an LSP path removal
404 protected final synchronized void updateLsp(final MessageContext ctx, final L id, final String lspName,
405 final ReportedLspBuilder rlb, final boolean solicited, final boolean remove) {
408 if (lspName == null) {
409 name = this.lsps.get(id);
411 LOG.error("PLSPID {} seen for the first time, not reporting the LSP", id);
418 LOG.debug("Saved LSP {} with name {}", id, name);
419 this.lsps.put(id, name);
422 final ReportedLsp previous = this.lspData.get(name);
423 // if no previous report about the lsp exist, just proceed
424 if (previous != null) {
425 final List<Path> updatedPaths = makeBeforeBreak(rlb, previous, name, remove);
426 // if all paths or the last path were deleted, delete whole tunnel
427 if (updatedPaths.isEmpty()) {
428 LOG.debug("All paths were removed, removing LSP with {}.", id);
432 rlb.setPath(updatedPaths);
434 rlb.setKey(new ReportedLspKey(name));
437 // If this is an unsolicited update. We need to make sure we retain the metadata already present
439 this.nodeState.setLspMetadata(name, rlb.getMetadata());
441 rlb.setMetadata(this.nodeState.getLspMetadata(name));
444 final ReportedLsp rl = rlb.build();
445 ctx.trans.put(LogicalDatastoreType.OPERATIONAL, this.pccIdentifier.child(ReportedLsp.class, rlb.getKey()), rl);
446 LOG.debug("LSP {} updated to MD-SAL", name);
448 this.lspData.put(name, rl);
451 private List<Path> makeBeforeBreak(final ReportedLspBuilder rlb, final ReportedLsp previous, final String name,
452 final boolean remove) {
453 // just one path should be reported
454 Preconditions.checkState(rlb.getPath().size() == 1);
455 final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.LspId reportedLspId =
456 rlb.getPath().get(0).getLspId();
457 final List<Path> updatedPaths;
458 //lspId = 0 and remove = false -> tunnel is down, still exists but no path is signaled
459 //remove existing tunnel's paths now, as explicit path remove will not come
460 if (!remove && reportedLspId.getValue() == 0) {
461 updatedPaths = new ArrayList<>();
462 LOG.debug("Remove previous paths {} to this lsp name {}", previous.getPath(), name);
464 // check previous report for existing paths
465 updatedPaths = new ArrayList<>(previous.getPath());
466 LOG.debug("Found previous paths {} to this lsp name {}", updatedPaths, name);
467 for (final Path path : previous.getPath()) {
468 //we found reported path in previous reports
469 if (path.getLspId().getValue() == 0 || path.getLspId().equals(reportedLspId)) {
470 LOG.debug("Match on lsp-id {}", path.getLspId().getValue());
471 // path that was reported previously and does have the same lsp-id, path will be updated
472 final boolean r = updatedPaths.remove(path);
473 LOG.trace("Request removed? {}", r);
477 // if the path does not exist in previous report, add it to path list, it's a new ERO
478 // only one path will be added
479 //lspId is 0 means confirmation message that shouldn't be added (because we have no means of deleting it later)
480 LOG.trace("Adding new path {} to {}", rlb.getPath(), updatedPaths);
481 updatedPaths.addAll(rlb.getPath());
483 if (reportedLspId.getValue() == 0) {
484 // if lsp-id also 0, remove all paths
485 LOG.debug("Removing all paths.");
486 updatedPaths.clear();
488 // path is marked to be removed
489 LOG.debug("Removing path {} from {}", rlb.getPath(), updatedPaths);
490 final boolean r = updatedPaths.removeAll(rlb.getPath());
491 LOG.trace("Request removed? {}", r);
494 LOG.debug("Setting new paths {} to lsp {}", updatedPaths, name);
499 * Indicate that the peer has completed state synchronization.
501 * @param ctx Message context
503 protected final synchronized void stateSynchronizationAchieved(final MessageContext ctx) {
504 if (this.synced.getAndSet(true)) {
505 LOG.debug("State synchronization achieved while synchronizing, not updating state");
508 if (this.triggeredResyncInProcess) {
509 this.triggeredResyncInProcess = false;
511 updatePccNode(ctx, new PathComputationClientBuilder().setStateSync(PccSyncState.Synchronized).build());
513 // The node has completed synchronization, cleanup metadata no longer reported back
514 this.nodeState.cleanupExcept(this.lsps.values());
515 LOG.debug("Session {} achieved synchronized state", this.session);
518 protected final synchronized void updatePccNode(final MessageContext ctx, final PathComputationClient pcc) {
519 ctx.trans.merge(LogicalDatastoreType.OPERATIONAL, this.pccIdentifier, pcc);
522 protected final InstanceIdentifier<ReportedLsp> lspIdentifier(final String name) {
523 return this.pccIdentifier.child(ReportedLsp.class, new ReportedLspKey(name));
527 * Remove LSP from the database.
529 * @param ctx Message Context
530 * @param id Revision-specific LSP identifier
532 protected final synchronized void removeLsp(final MessageContext ctx, final L id) {
533 final String name = this.lsps.remove(id);
534 LOG.debug("LSP {} removed", name);
535 ctx.trans.delete(LogicalDatastoreType.OPERATIONAL, lspIdentifier(name));
536 this.lspData.remove(name);
539 @SuppressWarnings("checkstyle:OverloadMethodsDeclarationOrder")
540 protected abstract void onSessionUp(PCEPSession session, PathComputationClientBuilder pccBuilder);
543 * Perform revision-specific message processing when a message arrives.
545 * @param ctx Message processing context
546 * @param message Protocol message
547 * @return True if the message type is not handle.
549 @SuppressWarnings("checkstyle:OverloadMethodsDeclarationOrder")
550 protected abstract boolean onMessage(MessageContext ctx, Message message);
552 final String lookupLspName(final L id) {
553 requireNonNull(id, "ID parameter null.");
554 return this.lsps.get(id);
558 * Reads operational data on this node. Doesn't attempt to read the data,
559 * if the node does not exist. In this case returns null.
561 * @param id InstanceIdentifier of the node
562 * @return null if the node does not exists, or operational data
564 final synchronized <T extends DataObject> ListenableFuture<Optional<T>>
565 readOperationalData(final InstanceIdentifier<T> id) {
566 if (this.nodeState == null) {
569 return this.nodeState.readOperationalData(id);
572 protected abstract Object validateReportedLsp(Optional<ReportedLsp> rep, LspId input);
574 protected abstract void loadLspData(Node node, Map<String, ReportedLsp> lspData, Map<L, String> lsps,
575 boolean incrementalSynchro);
577 final boolean isLspDbPersisted() {
578 return this.syncOptimization != null && this.syncOptimization.isSyncAvoidanceEnabled();
581 final boolean isLspDbRetreived() {
582 return this.syncOptimization != null && this.syncOptimization.isDbVersionPresent();
586 * Is Incremental synchronization if LSP-DB-VERSION are included,
587 * LSP-DB-VERSION TLV values doesnt match, and LSP-SYNC-CAPABILITY is enabled.
589 final synchronized boolean isIncrementalSynchro() {
590 return this.syncOptimization != null && this.syncOptimization.isSyncAvoidanceEnabled()
591 && this.syncOptimization.isDeltaSyncEnabled();
594 final synchronized boolean isTriggeredInitialSynchro() {
595 return this.syncOptimization != null && this.syncOptimization.isTriggeredInitSyncEnabled();
598 final synchronized boolean isTriggeredReSyncEnabled() {
599 return this.syncOptimization != null && this.syncOptimization.isTriggeredReSyncEnabled();
602 protected final synchronized boolean isSynchronized() {
603 return this.syncOptimization != null && this.syncOptimization.doesLspDbMatch();
607 public synchronized int getDelegatedLspsCount() {
608 return Math.toIntExact(this.lspData.values().stream()
609 .map(ReportedLsp::getPath).filter(Objects::nonNull).filter(pathList -> !pathList.isEmpty())
610 // pick the first path, as delegate status should be same in each path
611 .map(pathList -> pathList.get(0))
612 .map(path -> path.getAugmentation(Path1.class)).filter(Objects::nonNull)
613 .map(LspObject::getLsp).filter(Objects::nonNull)
614 .filter(Lsp::isDelegate)
619 public boolean isSessionSynchronized() {
620 return this.synced.get();
624 public synchronized ListenableFuture<RpcResult<Void>> tearDownSession(final TearDownSessionInput input) {
626 return Futures.immediateFuture(RpcResultBuilder.<Void>success().build());
629 static final class MessageContext {
630 private final Collection<PCEPRequest> requests = new ArrayList<>();
631 private final WriteTransaction trans;
633 private MessageContext(final WriteTransaction trans) {
634 this.trans = requireNonNull(trans);
637 void resolveRequest(final PCEPRequest req) {
638 this.requests.add(req);
641 private void notifyRequests() {
642 for (final PCEPRequest r : this.requests) {
643 r.done(OperationResults.SUCCESS);