/*
- * Copyright (c) 2014 Contextream, Inc. and others. All rights reserved.
+ * Copyright (c) 2014, 2017 Contextream, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
package org.opendaylight.lispflowmapping.implementation.lisp;
+import static java.util.Objects.requireNonNull;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
import java.util.Set;
-
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.TimeUnit;
import org.apache.commons.lang3.BooleanUtils;
-import org.apache.commons.lang3.exception.ExceptionUtils;
-import org.opendaylight.controller.md.sal.binding.api.NotificationService;
-import org.opendaylight.lispflowmapping.implementation.authentication.LispAuthenticationUtil;
+import org.opendaylight.lispflowmapping.config.ConfigIni;
+import org.opendaylight.lispflowmapping.implementation.util.LoggingUtil;
+import org.opendaylight.lispflowmapping.implementation.util.MSNotificationInputUtil;
import org.opendaylight.lispflowmapping.interfaces.dao.SubKeys;
-import org.opendaylight.lispflowmapping.interfaces.dao.SubscriberRLOC;
+import org.opendaylight.lispflowmapping.interfaces.dao.Subscriber;
import org.opendaylight.lispflowmapping.interfaces.lisp.IMapNotifyHandler;
import org.opendaylight.lispflowmapping.interfaces.lisp.IMapServerAsync;
+import org.opendaylight.lispflowmapping.interfaces.lisp.ISmrNotificationListener;
+import org.opendaylight.lispflowmapping.interfaces.lisp.SmrEvent;
import org.opendaylight.lispflowmapping.interfaces.mappingservice.IMappingService;
+import org.opendaylight.lispflowmapping.lisp.authentication.LispAuthenticationUtil;
+import org.opendaylight.lispflowmapping.lisp.type.LispMessage;
+import org.opendaylight.lispflowmapping.lisp.type.MappingData;
import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
import org.opendaylight.lispflowmapping.lisp.util.LispAddressUtil;
import org.opendaylight.lispflowmapping.lisp.util.MapNotifyBuilderHelper;
import org.opendaylight.lispflowmapping.lisp.util.MapRequestUtil;
+import org.opendaylight.lispflowmapping.lisp.util.MappingRecordUtil;
+import org.opendaylight.lispflowmapping.lisp.util.MaskUtil;
import org.opendaylight.lispflowmapping.lisp.util.SourceDestKeyHelper;
+import org.opendaylight.mdsal.binding.api.NotificationService;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.PortNumber;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.Address;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.SourceDestKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.inet.binary.types.rev160303.IpAddressBinary;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv4PrefixBinary;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv4PrefixBinaryBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv6PrefixBinary;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.augmented.lisp.address.address.Ipv6PrefixBinaryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.MapRegister;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.SiteId;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.EidBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.list.EidItem;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.list.EidItemBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapnotifymessage.MapNotifyBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecord;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecordBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.list.MappingRecordItem;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.container.MappingRecord;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.list.MappingRecordItem;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.list.MappingRecordItemBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.list.MappingRecordItemKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.authkey.container.MappingAuthkey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.maprequestnotification.MapRequestBuilder;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingChange;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.transport.address.TransportAddress;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.transport.address.TransportAddressBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingChanged;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingOrigin;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.OdlMappingserviceListener;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.SiteId;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.authkey.container.MappingAuthkey;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.google.common.base.Preconditions;
-
-public class MapServer implements IMapServerAsync, OdlMappingserviceListener {
+public class MapServer implements IMapServerAsync, OdlMappingserviceListener, ISmrNotificationListener {
- protected static final Logger LOG = LoggerFactory.getLogger(MapServer.class);
- private IMappingService mapService;
- private boolean authenticate;
+ private static final Logger LOG = LoggerFactory.getLogger(MapServer.class);
+ private static final byte[] ALL_ZEROES_XTR_ID = new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ,0};
+ private final IMappingService mapService;
private boolean subscriptionService;
- private IMapNotifyHandler notifyHandler;
- private NotificationService notificationService;
-
- public MapServer(IMappingService mapService, boolean authenticate, boolean subscriptionService,
- IMapNotifyHandler notifyHandler, NotificationService notificationService) {
- Preconditions.checkNotNull(mapService);
- this.mapService = mapService;
- this.authenticate = authenticate;
+ private final IMapNotifyHandler notifyHandler;
+ private final NotificationService notificationService;
+ private ListenerRegistration<MapServer> mapServerListenerRegistration;
+ private final SmrScheduler scheduler;
+
+ public MapServer(IMappingService mapService, boolean subscriptionService,
+ IMapNotifyHandler notifyHandler, NotificationService notificationService) {
+ this.mapService = requireNonNull(mapService);
this.subscriptionService = subscriptionService;
this.notifyHandler = notifyHandler;
this.notificationService = notificationService;
if (notificationService != null) {
notificationService.registerNotificationListener(this);
}
+ scheduler = new SmrScheduler();
}
@Override
}
@Override
- public boolean shouldAuthenticate() {
- return authenticate;
- }
-
- @Override
- public void setShouldAuthenticate(boolean shouldAuthenticate) {
- authenticate = shouldAuthenticate;
- }
-
+ @SuppressWarnings("unchecked")
public void handleMapRegister(MapRegister mapRegister) {
- boolean failed = false;
- boolean updated = false;
- String password = null;
- Set<SubscriberRLOC> subscribers = null;
+ boolean mappingUpdated = false;
+ boolean merge = ConfigIni.getInstance().mappingMergeIsSet() && mapRegister.getMergeEnabled();
MappingRecord oldMapping;
+ if (merge) {
+ if (!mapRegister.getXtrSiteIdPresent() || mapRegister.getXtrId() == null) {
+ LOG.error("Merge bit is set in Map-Register, but xTR-ID is not present. Will not merge.");
+ merge = false;
+ } else if (Arrays.equals(mapRegister.getXtrId().getValue(), ALL_ZEROES_XTR_ID)) {
+ LOG.warn("Merge bit is set in Map-Register, but xTR-ID is all zeroes.");
+ }
+ }
+
for (MappingRecordItem record : mapRegister.getMappingRecordItem()) {
MappingRecord mapping = record.getMappingRecord();
- if (authenticate) {
- MappingAuthkey authkey = mapService.getAuthenticationKey(mapping.getEid());
- if (authkey != null) {
- password = authkey.getKeyString();
- }
- if (!LispAuthenticationUtil.validate(mapRegister, password)) {
- LOG.warn("Authentication failed");
- failed = true;
- break;
- }
- }
- oldMapping = (MappingRecord) mapService.getMapping(MappingOrigin.Southbound,
- mapping.getEid());
+ Eid eid = mapping.getEid();
+ MappingData mappingData = new MappingData(mapping, System.currentTimeMillis());
+ mappingData.setMergeEnabled(merge);
+ mappingData.setXtrId(mapRegister.getXtrId());
- if (subscriptionService && !mapping.equals(oldMapping)) {
- if (LOG.isDebugEnabled()){
- LOG.debug("Mapping update occured for {} SMRs will be sent for its subscribers.", LispAddressStringifier.getString(mapping.getEid()));
+ oldMapping = getMappingRecord(mapService.getMapping(MappingOrigin.Southbound, eid));
+ mapService.addMapping(MappingOrigin.Southbound, eid, getSiteId(mapRegister), mappingData);
+ if (merge) {
+ MappingRecord newMapping = getMappingRecord(mapService.getMapping(MappingOrigin.Southbound, eid));
+ if (MappingRecordUtil.mappingChanged(oldMapping, newMapping)) {
+ // If there is a SB mapping change with merge on, Map-Notify will be sent to ALL xTRs, not jus the
+ // one registering (merging is done in the MappingSystem code)
+ mappingUpdated = true;
}
- subscribers = getSubscribers(mapping.getEid());
- updated = true;
- }
- // Must update the record before sending SMRs
- mapService.addMapping(MappingOrigin.Southbound, mapping.getEid(), getSiteId(mapRegister), mapping);
- if (updated) {
- updated = false;
- sendSmrs(mapping, subscribers);
}
}
- if (!failed) {
+ if (BooleanUtils.isTrue(mapRegister.getWantMapNotify())) {
+ LOG.trace("MapRegister wants MapNotify");
MapNotifyBuilder builder = new MapNotifyBuilder();
- if (BooleanUtils.isTrue(mapRegister.isWantMapNotify())) {
- LOG.trace("MapRegister wants MapNotify");
+ List<TransportAddress> rlocs = null;
+ if (merge) {
+ Set<IpAddressBinary> notifyRlocs = new LinkedHashSet<>();
+ List<MappingRecordItem> mergedMappings = new ArrayList<>();
+ for (MappingRecordItem record : mapRegister.getMappingRecordItem()) {
+ MappingRecord mapping = record.getMappingRecord();
+ MappingRecord currentRecord = getMappingRecord(mapService.getMapping(MappingOrigin.Southbound,
+ mapping.getEid()));
+ mergedMappings.add(new MappingRecordItemBuilder()
+ .withKey(new MappingRecordItemKey(LispAddressStringifier.getString(mapping.getEid())))
+ .setMappingRecord(currentRecord).build());
+ Set<IpAddressBinary> sourceRlocs = (Set<IpAddressBinary>) mapService.getData(
+ MappingOrigin.Southbound, mapping.getEid(), SubKeys.SRC_RLOCS);
+ if (sourceRlocs != null) {
+ notifyRlocs.addAll(sourceRlocs);
+ }
+ }
+ MapNotifyBuilderHelper.setFromMapRegisterAndMappingRecordItems(builder, mapRegister, mergedMappings);
+ // send map-notify to merge group only when mapping record is changed
+ if (mappingUpdated) {
+ rlocs = getTransportAddresses(notifyRlocs);
+ }
+ } else {
MapNotifyBuilderHelper.setFromMapRegister(builder, mapRegister);
- if (authenticate) {
+ }
+ List<MappingRecordItem> mappings = builder.getMappingRecordItem();
+ if (mappings != null && mappings.get(0) != null && mappings.get(0).getMappingRecord() != null
+ && mappings.get(0).getMappingRecord().getEid() != null) {
+ MappingAuthkey authkey = mapService.getAuthenticationKey(mappings.get(0).getMappingRecord().getEid());
+ if (authkey != null) {
builder.setAuthenticationData(LispAuthenticationUtil.createAuthenticationData(builder.build(),
- password));
+ authkey.getKeyString()));
}
- notifyHandler.handleMapNotify(builder.build());
}
+ notifyHandler.handleMapNotify(builder.build(), rlocs);
+ }
+ }
+
+ private static List<TransportAddress> getTransportAddresses(Set<IpAddressBinary> addresses) {
+ List<TransportAddress> rlocs = new ArrayList<>();
+ for (IpAddressBinary address : addresses) {
+ TransportAddressBuilder tab = new TransportAddressBuilder();
+ tab.setIpAddress(address);
+ tab.setPort(new PortNumber(LispMessage.PORT_NUMBER));
+ rlocs.add(tab.build());
}
+ return rlocs;
+ }
+
+ private static SiteId getSiteId(MapRegister mapRegister) {
+ return mapRegister.getSiteId() != null ? new SiteId(mapRegister.getSiteId()) : null;
}
- private SiteId getSiteId(MapRegister mapRegister) {
- return (mapRegister.getSiteId() != null) ? new SiteId(mapRegister.getSiteId()) : null;
+ private static MappingRecord getMappingRecord(MappingData mappingData) {
+ return mappingData != null ? mappingData.getRecord() : null;
}
@Override
public void onMappingChanged(MappingChanged notification) {
if (subscriptionService) {
- sendSmrs(notification.getMappingRecord(), getSubscribers(notification.getMappingRecord().getEid()));
- if (notification.getChangeType().equals(MappingChange.Removed)) {
- removeSubscribers(notification.getMappingRecord().getEid());
+ Eid eid = notification.getEid();
+ if (eid == null) {
+ eid = notification.getMappingRecord().getEid();
+ }
+ LOG.trace("MappingChanged event for {} of type: `{}'", LispAddressStringifier.getString(eid),
+ notification.getChangeType());
+ Set<Subscriber> subscribers = MSNotificationInputUtil.toSubscriberSet(notification.getSubscriberItem());
+ LoggingUtil.logSubscribers(LOG, eid, subscribers);
+ if (mapService.isMaster()) {
+ sendSmrs(eid, subscribers);
+ if (eid.getAddress() instanceof SourceDestKey) {
+ Set<Subscriber> dstSubscribers = MSNotificationInputUtil.toSubscriberSetFromDst(
+ notification.getDstSubscriberItem());
+ LoggingUtil.logSubscribers(LOG, SourceDestKeyHelper.getDstBinary(eid), dstSubscribers);
+ sendSmrs(SourceDestKeyHelper.getDstBinary(eid), dstSubscribers);
+ }
}
}
}
- private void sendSmrs(MappingRecord record, Set<SubscriberRLOC> subscribers) {
- Eid eid = record.getEid();
- handleSmr(record, subscribers, notifyHandler);
+ private void handleSmr(Eid eid, Set<Subscriber> subscribers) {
+ sendSmrs(eid, subscribers);
// For SrcDst LCAF also send SMRs to Dst prefix
if (eid.getAddress() instanceof SourceDestKey) {
- Eid dstAddr = SourceDestKeyHelper.getDst(eid);
- Set<SubscriberRLOC> dstSubs = getSubscribers(dstAddr);
- MappingRecord newRecord = new MappingRecordBuilder().setAction(record.getAction())
- .setAuthoritative(record.isAuthoritative()).setLocatorRecord(record.getLocatorRecord())
- .setMapVersion(record.getMapVersion()).setRecordTtl(record.getRecordTtl())
- .setEid(dstAddr).build();
- handleSmr(newRecord, dstSubs, notifyHandler);
+ Eid dstAddr = SourceDestKeyHelper.getDstBinary(eid);
+ Set<Subscriber> dstSubs = mapService.getSubscribers(dstAddr);
+ sendSmrs(dstAddr, dstSubs);
}
}
- private void handleSmr(MappingRecord record, Set<SubscriberRLOC> subscribers, IMapNotifyHandler callback) {
+ private void sendSmrs(Eid eid, Set<Subscriber> subscribers) {
if (subscribers == null) {
return;
}
- MapRequestBuilder mrb = MapRequestUtil.prepareSMR(record.getEid(), LispAddressUtil.toRloc(getLocalAddress()));
- LOG.trace("Built SMR packet: " + mrb.build().toString());
- for (SubscriberRLOC subscriber : subscribers) {
- if (subscriber.timedOut()) {
- LOG.trace("Lazy removing expired subscriber entry " + subscriber.toString());
- subscribers.remove(subscriber);
- } else {
- try {
- // The address stored in the SMR's EID record is used as Source EID in the SMR-invoked Map-Request.
- // To ensure consistent behavior it is set to the value used to originally request a given mapping
- mrb.setEidItem(new ArrayList<EidItem>());
- mrb.getEidItem().add(new EidItemBuilder().setEid(subscriber.getSrcEid()).build());
- callback.handleSMR(mrb.build(), subscriber.getSrcRloc());
- } catch (Exception e) {
- LOG.error("Errors encountered while handling SMR:" + ExceptionUtils.getStackTrace(e));
- }
- }
- }
- addSubscribers(record.getEid(), subscribers);
- }
+ final MapRequestBuilder mrb = MapRequestUtil.prepareSMR(eid, LispAddressUtil.toRloc(getLocalAddress()));
+ LOG.trace("Built SMR packet template (EID field will be set later): {}", mrb.build());
- @SuppressWarnings("unchecked")
- private Set<SubscriberRLOC> getSubscribers(Eid address) {
- return (Set<SubscriberRLOC>) mapService.getData(MappingOrigin.Southbound, address, SubKeys.SUBSCRIBERS);
- }
-
- private void removeSubscribers(Eid address) {
- mapService.removeData(MappingOrigin.Southbound, address, SubKeys.SUBSCRIBERS);
- }
-
- private void addSubscribers(Eid address, Set<SubscriberRLOC> subscribers) {
- mapService.addData(MappingOrigin.Southbound, address, SubKeys.SUBSCRIBERS, subscribers);
+ scheduler.scheduleSmrs(mrb, subscribers.iterator());
}
private static InetAddress getLocalAddress() {
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
NetworkInterface current = interfaces.nextElement();
- LOG.debug("Interface " + current.toString());
+ LOG.trace("Interface {}", current);
if (!current.isUp() || current.isLoopback() || current.isVirtual()) {
continue;
}
Enumeration<InetAddress> addresses = current.getInetAddresses();
while (addresses.hasMoreElements()) {
- InetAddress current_addr = addresses.nextElement();
+ InetAddress currentAddr = addresses.nextElement();
// Skip loopback and link local addresses
- if (current_addr.isLoopbackAddress() || current_addr.isLinkLocalAddress()) {
+ if (currentAddr.isLoopbackAddress() || currentAddr.isLinkLocalAddress()) {
continue;
}
- LOG.debug(current_addr.getHostAddress());
- return current_addr;
+ LOG.debug(currentAddr.getHostAddress());
+ return currentAddr;
}
}
} catch (SocketException se) {
- LOG.debug("Caught socket exceptio", se);
+ LOG.debug("Caught socket exception", se);
}
return null;
}
+
+ @Override
+ public void onSmrInvokedReceived(SmrEvent event) {
+ scheduler.smrReceived(event);
+ }
+
+ /**
+ * Task scheduler is responsible for resending SMR messages to a subscriber (xTR)
+ * {@value ConfigIni#LISP_SMR_RETRY_COUNT} times, or until {@link ISmrNotificationListener#onSmrInvokedReceived}
+ * is triggered.
+ */
+ private class SmrScheduler {
+ final int cpuCores = Runtime.getRuntime().availableProcessors();
+ private final ThreadFactory threadFactory = new ThreadFactoryBuilder()
+ .setNameFormat("smr-executor-%d").build();
+ private final ScheduledExecutorService executor = Executors.newScheduledThreadPool(cpuCores * 2, threadFactory);
+ private final Map<Eid, Map<Subscriber, ScheduledFuture<?>>> eidFutureMap = new ConcurrentHashMap<>();
+
+ void scheduleSmrs(MapRequestBuilder mrb, Iterator<Subscriber> subscribers) {
+ final Eid srcEid = fixSrcEidMask(mrb.getSourceEid().getEid());
+ cancelExistingFuturesForEid(srcEid);
+
+ final Map<Subscriber, ScheduledFuture<?>> subscriberFutureMap = new ConcurrentHashMap<>();
+
+ // Using Iterator ensures that we don't get a ConcurrentModificationException when removing a Subscriber
+ // from a Set.
+ while (subscribers.hasNext()) {
+ Subscriber subscriber = subscribers.next();
+ if (subscriber.timedOut()) {
+ LOG.debug("Lazy removing expired subscriber entry {}", subscriber.getString());
+ subscribers.remove();
+ } else {
+ final ScheduledFuture<?> future = executor.scheduleAtFixedRate(new CancellableRunnable(
+ mrb, subscriber), 0L, ConfigIni.getInstance().getSmrTimeout(), TimeUnit.MILLISECONDS);
+ subscriberFutureMap.put(subscriber, future);
+ }
+ }
+
+ if (subscriberFutureMap.isEmpty()) {
+ return;
+ }
+ eidFutureMap.put(srcEid, subscriberFutureMap);
+ }
+
+ void smrReceived(SmrEvent event) {
+ final List<Subscriber> subscriberList = event.getSubscriberList();
+ for (Subscriber subscriber : subscriberList) {
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("SMR-invoked event, EID {}, subscriber {}",
+ LispAddressStringifier.getString(event.getEid()),
+ subscriber.getString());
+ LOG.trace("eidFutureMap: {}", eidFutureMap);
+ }
+ final Map<Subscriber, ScheduledFuture<?>> subscriberFutureMap = eidFutureMap.get(event.getEid());
+ if (subscriberFutureMap != null) {
+ final ScheduledFuture<?> future = subscriberFutureMap.get(subscriber);
+ if (future != null && !future.isCancelled()) {
+ future.cancel(true);
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("SMR-invoked MapRequest received, scheduled task for subscriber {}, EID {} with"
+ + " nonce {} has been cancelled", subscriber.getString(),
+ LispAddressStringifier.getString(event.getEid()), event.getNonce());
+ }
+ subscriberFutureMap.remove(subscriber);
+ } else {
+ if (future == null) {
+ LOG.trace("No outstanding SMR tasks for EID {}, subscriber {}",
+ LispAddressStringifier.getString(event.getEid()), subscriber.getString());
+ } else {
+ LOG.trace("Future {} is cancelled", future);
+ }
+ }
+ if (subscriberFutureMap.isEmpty()) {
+ eidFutureMap.remove(event.getEid());
+ }
+ } else {
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("No outstanding SMR tasks for EID {}",
+ LispAddressStringifier.getString(event.getEid()));
+ }
+ }
+ }
+ }
+
+ private void cancelExistingFuturesForEid(Eid eid) {
+ synchronized (eidFutureMap) {
+ if (eidFutureMap.containsKey(eid)) {
+ final Map<Subscriber, ScheduledFuture<?>> subscriberFutureMap = eidFutureMap.get(eid);
+ Iterator<Subscriber> oldSubscribers = subscriberFutureMap.keySet().iterator();
+ while (oldSubscribers.hasNext()) {
+ Subscriber subscriber = oldSubscribers.next();
+ ScheduledFuture<?> subscriberFuture = subscriberFutureMap.get(subscriber);
+ subscriberFuture.cancel(true);
+ }
+ eidFutureMap.remove(eid);
+ }
+ }
+ }
+
+ /*
+ * See https://bugs.opendaylight.org/show_bug.cgi?id=8469#c1 why this is necessary.
+ *
+ * TL;DR The sourceEid field in the MapRequestBuilder object will be serialized to a packet on the wire, and
+ * a Map-Request can't store the prefix length in the source EID.
+ *
+ * Since we store all prefixes as binary internally, we only care about and fix those address types.
+ */
+ private Eid fixSrcEidMask(Eid eid) {
+ Address address = eid.getAddress();
+ if (address instanceof Ipv4PrefixBinary) {
+ return new EidBuilder(eid).setAddress(new Ipv4PrefixBinaryBuilder((Ipv4PrefixBinary) address)
+ .setIpv4MaskLength(MaskUtil.IPV4_MAX_MASK_UINT).build()).build();
+ } else if (address instanceof Ipv6PrefixBinary) {
+ return new EidBuilder(eid).setAddress(new Ipv6PrefixBinaryBuilder((Ipv6PrefixBinary) address)
+ .setIpv6MaskLength(MaskUtil.IPV6_MAX_MASK_UINT).build()).build();
+ }
+ return eid;
+ }
+
+ private final class CancellableRunnable implements Runnable {
+ private final MapRequestBuilder mrb;
+ private final Subscriber subscriber;
+ private int executionCount = 1;
+
+ CancellableRunnable(MapRequestBuilder mrb, Subscriber subscriber) {
+ this.mrb = mrb;
+ this.subscriber = subscriber;
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ @Override
+ public void run() {
+ final Eid srcEid = mrb.getSourceEid().getEid();
+
+ try {
+ // The address stored in the SMR's EID record is used as Source EID in the SMR-invoked
+ // Map-Request. To ensure consistent behavior it is set to the value used to originally request
+ // a given mapping.
+ if (executionCount <= ConfigIni.getInstance().getSmrRetryCount()) {
+ synchronized (mrb) {
+ mrb.setEidItem(new ArrayList<EidItem>());
+ mrb.getEidItem().add(new EidItemBuilder()
+ .setEidItemId(LispAddressStringifier.getString(subscriber.getSrcEid()))
+ .setEid(subscriber.getSrcEid()).build());
+ notifyHandler.handleSMR(mrb.build(), subscriber.getSrcRloc());
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("Attempt #{} to send SMR to subscriber {} for EID {}",
+ executionCount,
+ subscriber.getString(),
+ LispAddressStringifier.getString(mrb.getSourceEid().getEid()));
+ }
+ }
+ } else {
+ LOG.trace("Cancelling execution of a SMR Map-Request after {} failed attempts.",
+ executionCount - 1);
+ cancelAndRemove(subscriber, srcEid);
+ return;
+ }
+ } catch (Exception e) {
+ LOG.error("Errors encountered while handling SMR:", e);
+ cancelAndRemove(subscriber, srcEid);
+ return;
+ }
+ executionCount++;
+ }
+
+ private void cancelAndRemove(Subscriber sub, Eid eid) {
+ final Map<Subscriber, ScheduledFuture<?>> subscriberFutureMap = eidFutureMap.get(eid);
+ if (subscriberFutureMap == null) {
+ LOG.warn("Couldn't find subscriber {} in SMR scheduler internal list", sub);
+ return;
+ }
+
+ if (subscriberFutureMap.containsKey(sub)) {
+ ScheduledFuture<?> eidFuture = subscriberFutureMap.get(sub);
+ subscriberFutureMap.remove(sub);
+ eidFuture.cancel(false);
+ }
+ if (subscriberFutureMap.isEmpty()) {
+ eidFutureMap.remove(eid);
+ }
+ }
+ }
+ }
}
Code Review / lispflowmapping.git / blobdiff