/*
- * Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2015, 2017 Cisco Systems, Inc. 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;
+import com.google.common.collect.Sets;
import java.util.ArrayList;
+import java.util.Collections;
import java.util.Date;
import java.util.EnumMap;
+import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
+import java.util.Map;
import java.util.Set;
-import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import java.util.concurrent.ConcurrentHashMap;
import org.opendaylight.lispflowmapping.config.ConfigIni;
import org.opendaylight.lispflowmapping.dsbackend.DataStoreBackEnd;
+import org.opendaylight.lispflowmapping.implementation.timebucket.implementation.TimeBucketMappingTimeoutService;
+import org.opendaylight.lispflowmapping.implementation.timebucket.interfaces.ISouthBoundMappingTimeoutService;
import org.opendaylight.lispflowmapping.implementation.util.DSBEInputUtil;
+import org.opendaylight.lispflowmapping.implementation.util.LoggingUtil;
+import org.opendaylight.lispflowmapping.implementation.util.MSNotificationInputUtil;
import org.opendaylight.lispflowmapping.implementation.util.MappingMergeUtil;
import org.opendaylight.lispflowmapping.interfaces.dao.ILispDAO;
+import org.opendaylight.lispflowmapping.interfaces.dao.SubKeys;
+import org.opendaylight.lispflowmapping.interfaces.dao.Subscriber;
import org.opendaylight.lispflowmapping.interfaces.mapcache.IAuthKeyDb;
import org.opendaylight.lispflowmapping.interfaces.mapcache.ILispMapCache;
import org.opendaylight.lispflowmapping.interfaces.mapcache.IMapCache;
import org.opendaylight.lispflowmapping.interfaces.mapcache.IMappingSystem;
import org.opendaylight.lispflowmapping.interfaces.mappingservice.IMappingService;
+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.MappingRecordUtil;
+import org.opendaylight.lispflowmapping.lisp.util.MaskUtil;
+import org.opendaylight.lispflowmapping.lisp.util.SourceDestKeyHelper;
import org.opendaylight.lispflowmapping.mapcache.AuthKeyDb;
import org.opendaylight.lispflowmapping.mapcache.MultiTableMapCache;
import org.opendaylight.lispflowmapping.mapcache.SimpleMapCache;
+import org.opendaylight.lispflowmapping.mapcache.lisp.LispMapCacheStringifier;
+import org.opendaylight.mdsal.binding.api.NotificationPublishService;
+import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.SimpleAddress;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.ExplicitLocatorPath;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.Ipv4;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.Ipv6;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.ServicePath;
+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.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.explicit.locator.path.explicit.locator.path.Hop;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.inet.binary.types.rev160303.IpAddressBinary;
-import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.SiteId;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.Ipv4PrefixBinaryAfi;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.binary.address.types.rev160504.Ipv6PrefixBinaryAfi;
+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.Ipv6PrefixBinary;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.XtrId;
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.locatorrecords.LocatorRecord;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecordBuilder;
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.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.rloc.container.Rloc;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingChange;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingOrigin;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.AuthenticationKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.Mapping;
* mapping lookups.
*
* @author Florin Coras
+ * @author Lorand Jakab
*
*/
public class MappingSystem implements IMappingSystem {
private static final Logger LOG = LoggerFactory.getLogger(MappingSystem.class);
private static final String AUTH_KEY_TABLE = "authentication";
- private boolean notificationService;
+ //private static final int TTL_RLOC_TIMED_OUT = 1;
+ private static final int TTL_NO_RLOC_KNOWN = ConfigIni.getInstance().getNegativeMappingTTL();
+ private final NotificationPublishService notificationPublishService;
private boolean mappingMerge;
- private ILispDAO dao;
+ private final ILispDAO dao;
private ILispDAO sdao;
private ILispMapCache smc;
private IMapCache pmc;
+ private final ConcurrentHashMap<Eid, Set<Subscriber>> subscriberdb = new ConcurrentHashMap<>();
private IAuthKeyDb akdb;
private final EnumMap<MappingOrigin, IMapCache> tableMap = new EnumMap<>(MappingOrigin.class);
private DataStoreBackEnd dsbe;
private boolean isMaster = false;
- public MappingSystem(ILispDAO dao, boolean iterateMask, boolean notifications, boolean mappingMerge) {
+ private final ISouthBoundMappingTimeoutService sbMappingTimeoutService;
+
+ public MappingSystem(ILispDAO dao, boolean iterateMask, NotificationPublishService nps, boolean mappingMerge) {
this.dao = dao;
- this.notificationService = notifications;
+ this.notificationPublishService = nps;
this.mappingMerge = mappingMerge;
buildMapCaches();
+
+ sbMappingTimeoutService = new TimeBucketMappingTimeoutService(ConfigIni.getInstance()
+ .getNumberOfBucketsInTimeBucketWheel(), ConfigIni.getInstance().getRegistrationValiditySb(),
+ this);
}
- public void setDataStoreBackEnd(DataStoreBackEnd dsbe) {
- this.dsbe = dsbe;
+ public void setDataStoreBackEnd(DataStoreBackEnd dataStoreBackEnd) {
+ this.dsbe = dataStoreBackEnd;
}
@Override
tableMap.put(MappingOrigin.Southbound, smc);
}
+ @Override
+ public void updateMapping(MappingOrigin origin, Eid key, MappingData mappingData) {
+ addMapping(origin, key, mappingData, MappingChange.Updated);
+ }
+
+ @Override
public void addMapping(MappingOrigin origin, Eid key, MappingData mappingData) {
+ addMapping(origin, key, mappingData, MappingChange.Created);
+ }
+
+ private void addMapping(MappingOrigin origin, Eid key, MappingData mappingData, MappingChange changeType) {
+
+ sbMappingTimeoutService.removeExpiredMappings();
+
if (mappingData == null) {
LOG.warn("addMapping() called with null mapping, ignoring");
return;
}
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("DAO: Adding {} mapping for EID {}", origin, LispAddressStringifier.getString(key));
+ }
+
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("mappingData = {}", mappingData.getString());
+ }
+
+ // Save the old mapping for the key before we modify anything, so that we can detect changes later
+ final MappingRecord oldMapping = getMappingRecord(getMapping(key));
+
if (origin == MappingOrigin.Southbound) {
XtrId xtrId = mappingData.getXtrId();
if (xtrId == null && mappingMerge && mappingData.isMergeEnabled()) {
return;
}
if (xtrId != null && mappingMerge) {
- smc.addMapping(key, xtrId, mappingData);
if (mappingData.isMergeEnabled()) {
- mergeMappings(key);
+ smc.addMapping(key, xtrId, mappingData);
+ handleMergedMapping(key);
return;
+ } else {
+ clearPresentXtrIdMappings(key);
+ smc.addMapping(key, xtrId, mappingData);
}
}
+ addOrRefreshMappingInTimeoutService(key, mappingData);
}
tableMap.get(origin).addMapping(key, mappingData);
+
+ // We need to check if the newly added mapping is covering negatives in SB, and remove those (with notification)
+ if (mappingData.isPositive().or(true)) {
+ handleSbNegativeMappings(key);
+ }
+
+ MappingRecord newMapping = getMappingRecord(getMapping(key));
+
+ handleAddMappingNotifications(origin, key, mappingData, oldMapping, newMapping, changeType);
+ }
+
+ private static MappingRecord getMappingRecord(MappingData mappingData) {
+ return mappingData != null ? mappingData.getRecord() : null;
+ }
+
+ @SuppressWarnings("unchecked")
+ private void clearPresentXtrIdMappings(Eid key) {
+ List<MappingData> allXtrMappingList = (List<MappingData>) (List<?>) smc.getAllXtrIdMappings(key);
+
+ if (((MappingData) smc.getMapping(key, (XtrId) null)).isMergeEnabled()) {
+ LOG.trace("Different xTRs have different merge configuration!");
+ }
+
+ for (MappingData mappingData : allXtrMappingList) {
+ removeSbXtrIdSpecificMapping(key, mappingData.getXtrId(), mappingData);
+ }
+ }
+
+ private void addOrRefreshMappingInTimeoutService(Eid key, MappingData mappingData) {
+ Integer oldBucketId = (Integer) smc.getData(key, SubKeys.TIME_BUCKET_ID);
+ Integer updatedBucketId;
+
+ if (oldBucketId != null) {
+ //refresh mapping
+ updatedBucketId = sbMappingTimeoutService.refreshMapping(key, mappingData, oldBucketId);
+ } else {
+ updatedBucketId = sbMappingTimeoutService.addMapping(key, mappingData);
+ }
+
+ smc.addData(key, SubKeys.TIME_BUCKET_ID, updatedBucketId);
+ }
+
+ private void handleSbNegativeMappings(Eid key) {
+ Set<Eid> childPrefixes = getSubtree(MappingOrigin.Southbound, key);
+
+ LOG.trace("handleSbNegativeMappings(): subtree prefix set for EID {}: {}",
+ LispAddressStringifier.getString(key),
+ LispAddressStringifier.getString(childPrefixes));
+
+ for (Eid prefix : childPrefixes) {
+ handleSbNegativeMapping(prefix);
+ }
+
+ Eid parentPrefix = smc.getCoveringLessSpecific(key);
+ LOG.trace("handleSbNegativeMappings(): parent prefix for EID {}: {}",
+ LispAddressStringifier.getString(key),
+ LispAddressStringifier.getString(parentPrefix));
+ handleSbNegativeMapping(parentPrefix);
+ }
+
+ private void handleSbNegativeMapping(Eid key) {
+ MappingData mappingData = getSbMappingWithExpiration(null, key, null);
+ if (mappingData != null && mappingData.isNegative().or(false)) {
+ removeSbMapping(mappingData.getRecord().getEid(), mappingData);
+ }
+ }
+
+ private void handleAddMappingNotifications(MappingOrigin origin, Eid key, MappingData mappingData,
+ MappingRecord oldMapping, MappingRecord newMapping,
+ MappingChange changeType) {
+ // Non-southbound origins are MD-SAL first, so they only get to call addMapping() if there is a change
+ // Southbound is different, so we need to check if there is a change in the mapping. This check takes into
+ // account policy as well
+ if (origin != MappingOrigin.Southbound || MappingRecordUtil.mappingChanged(oldMapping, newMapping)) {
+ notifyChange(key, mappingData.getRecord(), changeType);
+
+ Eid dstKey = key;
+ // Since the above notifyChange() already notifies the dest part of source/dest addresses, we save the dest
+ // for the checks that we do afterwards
+ if (key.getAddress() instanceof SourceDestKey) {
+ dstKey = SourceDestKeyHelper.getDstBinary(key);
+ }
+ // If the old mapping had a different EID than what was just added, notify those subscribers too
+ if (oldMapping != null && !oldMapping.getEid().equals(key) && !oldMapping.getEid().equals(dstKey)) {
+ notifyChange(oldMapping.getEid(), oldMapping, changeType);
+ }
+ // If the new mapping has a different EID than what was just added (e.g., due to NB_AND_SB), notify those
+ // subscribers too
+ if (newMapping != null && !newMapping.getEid().equals(key) && !newMapping.getEid().equals(dstKey)) {
+ notifyChange(newMapping.getEid(), newMapping, changeType);
+ }
+ }
+
+ }
+
+ @Override
+ public MappingData addNegativeMapping(Eid key) {
+ MappingRecord mapping = buildNegativeMapping(key);
+ MappingData mappingData = new MappingData(mapping);
+ LOG.debug("Adding negative mapping for EID {}", LispAddressStringifier.getString(mapping.getEid()));
+ LOG.trace(mappingData.getString());
+ smc.addMapping(mapping.getEid(), mappingData);
+ dsbe.addMapping(DSBEInputUtil.toMapping(MappingOrigin.Southbound, mapping.getEid(), null, mappingData));
+ return mappingData;
+ }
+
+ private MappingRecord buildNegativeMapping(Eid eid) {
+ MappingRecordBuilder recordBuilder = new MappingRecordBuilder();
+ recordBuilder.setAuthoritative(false);
+ recordBuilder.setMapVersion((short) 0);
+ recordBuilder.setEid(eid);
+ if (eid.getAddressType().equals(Ipv4PrefixBinaryAfi.class)
+ || eid.getAddressType().equals(Ipv6PrefixBinaryAfi.class)) {
+ Eid widestNegativePrefix = getWidestNegativePrefix(eid);
+ if (widestNegativePrefix != null) {
+ recordBuilder.setEid(widestNegativePrefix);
+ }
+ }
+ recordBuilder.setAction(LispMessage.NEGATIVE_MAPPING_ACTION);
+ //if (getAuthenticationKey(eid) != null) {
+ // recordBuilder.setRecordTtl(TTL_RLOC_TIMED_OUT);
+ //} else {
+ recordBuilder.setRecordTtl(TTL_NO_RLOC_KNOWN);
+ //}
+ return recordBuilder.build();
}
/*
* Since this method is only called when there is a hit in the southbound Map-Register cache, and that cache is
* not used when merge is on, it's OK to ignore the effects of timestamp changes on merging for now.
*/
+ @Override
public void refreshMappingRegistration(Eid key, XtrId xtrId, Long timestamp) {
+
+ sbMappingTimeoutService.removeExpiredMappings();
+
if (timestamp == null) {
timestamp = System.currentTimeMillis();
}
MappingData mappingData = (MappingData) smc.getMapping(null, key);
if (mappingData != null) {
mappingData.setTimestamp(new Date(timestamp));
+ addOrRefreshMappingInTimeoutService(key, mappingData);
} else {
LOG.warn("Could not update timestamp for EID {}, no mapping found", LispAddressStringifier.getString(key));
}
- if (xtrId != null) {
+ if (mappingMerge && xtrId != null) {
MappingData xtrIdMappingData = (MappingData) smc.getMapping(key, xtrId);
if (xtrIdMappingData != null) {
xtrIdMappingData.setTimestamp(new Date(timestamp));
}
LocatorRecord locatorRecord = mappingData.getRecord().getLocatorRecord().get(0);
- long serviceIndex = ((ServicePath) eid.getAddress()).getServicePath().getServiceIndex();
+ long serviceIndex = ((ServicePath) eid.getAddress()).getServicePath().getServiceIndex().toJava();
int index = LispAddressUtil.STARTING_SERVICE_INDEX - (int) serviceIndex;
Rloc rloc = locatorRecord.getRloc();
if (rloc.getAddress() instanceof Ipv4 || rloc.getAddress() instanceof Ipv6) {
}
}
- private void mergeMappings(Eid key) {
- List<XtrId> expiredMappings = new ArrayList<>();
+ private MappingData handleMergedMapping(Eid key) {
+ LOG.trace("Merging mappings for EID {}", LispAddressStringifier.getString(key));
+ List<MappingData> expiredMappingDataList = new ArrayList<>();
Set<IpAddressBinary> sourceRlocs = new HashSet<>();
+
MappingData mergedMappingData = MappingMergeUtil.mergeXtrIdMappings(smc.getAllXtrIdMappings(key),
- expiredMappings, sourceRlocs);
- smc.removeXtrIdMappings(key, expiredMappings);
+ expiredMappingDataList, sourceRlocs);
+
+ for (MappingData mappingData : expiredMappingDataList) {
+ removeSbXtrIdSpecificMapping(key, mappingData.getXtrId(), mappingData);
+ }
+
if (mergedMappingData != null) {
smc.addMapping(key, mergedMappingData, sourceRlocs);
+ dsbe.addMapping(DSBEInputUtil.toMapping(MappingOrigin.Southbound, key, mergedMappingData));
+ addOrRefreshMappingInTimeoutService(key, mergedMappingData);
+ } else {
+ removeSbMapping(key, mergedMappingData);
}
+ return mergedMappingData;
}
@Override
public MappingData getMapping(Eid src, Eid dst) {
// NOTE: Currently we have two lookup algorithms implemented, which are configurable
+ IMappingService.LookupPolicy policy = ConfigIni.getInstance().getLookupPolicy();
+ LOG.debug("DAO: Looking up mapping for {}, source EID {} with policy {}",
+ LispAddressStringifier.getString(dst),
+ LispAddressStringifier.getString(src),
+ policy);
- if (ConfigIni.getInstance().getLookupPolicy() == IMappingService.LookupPolicy.NB_AND_SB) {
+ if (policy == IMappingService.LookupPolicy.NB_AND_SB) {
return getMappingNbSbIntersection(src, dst);
} else {
return getMappingNbFirst(src, dst);
private MappingData getSbMappingWithExpiration(Eid src, Eid dst, XtrId xtrId) {
MappingData mappingData = (MappingData) smc.getMapping(dst, xtrId);
- if (mappingData != null && MappingMergeUtil.mappingIsExpired(mappingData)) {
- removeExpiredMapping(dst, xtrId, mappingData);
- return null;
- } else {
- return mappingData;
+ while (mappingData != null && MappingMergeUtil.mappingIsExpired(mappingData)) {
+ // If the mappingData is expired, handleSbExpiredMapping() will run merge for it if merge is enabled,
+ // otherwise it will remove the expired mapping, returning null.
+ MappingData mergedMappingData = handleSbExpiredMapping(dst, xtrId, mappingData);
+ if (mergedMappingData != null) {
+ return mergedMappingData;
+ }
+ // If the expired mapping was removed, we look up the original query again
+ mappingData = (MappingData) smc.getMapping(dst, xtrId);
}
+ return mappingData;
}
- /*
- * This private method either removes the main mapping ONLY, or the xTR-ID mapping ONLY, based on xtrId being
- * null or non-null. Caller functions should take care of removing both when necessary.
- */
- private void removeExpiredMapping(Eid key, XtrId xtrId, MappingData mappingData) {
- if (xtrId == null) {
- smc.removeMapping(key);
- dsbe.removeMapping(DSBEInputUtil.toMapping(MappingOrigin.Southbound, mappingData.getRecord().getEid(),
- new SiteId(mappingData.getRecord().getSiteId()), mappingData));
+ public MappingData handleSbExpiredMapping(Eid key, XtrId xtrId, MappingData mappingData) {
+ if (mappingMerge && mappingData.isMergeEnabled()) {
+ return handleMergedMapping(key);
+ }
+
+ if (xtrId != null) {
+ removeSbXtrIdSpecificMapping(key, xtrId, mappingData);
} else {
- smc.removeMapping(key, xtrId);
- dsbe.removeXtrIdMapping(DSBEInputUtil.toXtrIdMapping(mappingData));
- if (mappingMerge && mappingData.isMergeEnabled()) {
- mergeMappings(key);
- }
+ removeSbMapping(key, mappingData);
+ }
+ return null;
+ }
+
+ private void removeSbXtrIdSpecificMapping(Eid key, XtrId xtrId, MappingData mappingData) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("DAO: Removing southbound mapping for EID {}, xTR-ID {}",
+ LispAddressStringifier.getString(key),
+ LispAddressStringifier.getString(xtrId));
+ }
+ smc.removeMapping(key, xtrId);
+ dsbe.removeXtrIdMapping(DSBEInputUtil.toXtrIdMapping(mappingData));
+ }
+
+ private void removeSbMapping(Eid key, MappingData mappingData) {
+ if (mappingData != null && mappingData.getXtrId() != null) {
+ removeSbXtrIdSpecificMapping(key, mappingData.getXtrId(), mappingData);
+ }
+
+ removeFromSbTimeoutService(key);
+ final Set<Subscriber> subscribers = getSubscribers(key);
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("DAO: Removing southbound mapping for EID {}", LispAddressStringifier.getString(key));
+ }
+ smc.removeMapping(key);
+ dsbe.removeMapping(DSBEInputUtil.toMapping(MappingOrigin.Southbound, key, mappingData));
+ publishNotification(mappingData.getRecord(), null, subscribers, null, MappingChange.Removed);
+ removeSubscribersConditionally(MappingOrigin.Southbound, key);
+ }
+
+ private void removeFromSbTimeoutService(Eid key) {
+ Integer bucketId = (Integer) smc.getData(key, SubKeys.TIME_BUCKET_ID);
+ if (bucketId != null) {
+ sbMappingTimeoutService.removeMappingFromTimeoutService(key, bucketId);
}
}
@Override
public Eid getWidestNegativePrefix(Eid key) {
+ if (!MaskUtil.isMaskable(key.getAddress())) {
+ LOG.warn("Widest negative prefix only makes sense for maskable addresses!");
+ return null;
+ }
+
+ // We assume that ILispMapCache#getWidestNegativeMapping() returns null for positive mappings, and 0/0
+ // for empty cache.
Eid nbPrefix = pmc.getWidestNegativeMapping(key);
if (nbPrefix == null) {
+ LOG.trace("getWidestNegativePrefix NB: positive mapping, returning null");
return null;
}
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("getWidestNegativePrefix NB: {}", LispAddressStringifier.getString(nbPrefix));
+ }
Eid sbPrefix = smc.getWidestNegativeMapping(key);
if (sbPrefix == null) {
+ LOG.trace("getWidestNegativePrefix SB: positive mapping, returning null");
return null;
}
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("getWidestNegativePrefix SB: {}", LispAddressStringifier.getString(sbPrefix));
+ }
// since prefixes overlap, just return the more specific (larger mask)
if (LispAddressUtil.getIpPrefixMask(nbPrefix) < LispAddressUtil.getIpPrefixMask(sbPrefix)) {
}
}
+ @Override
+ public Set<Eid> getSubtree(MappingOrigin origin, Eid key) {
+ if (!MaskUtil.isMaskable(key.getAddress())) {
+ LOG.warn("Child prefixes only make sense for maskable addresses!");
+ return Collections.emptySet();
+ }
+
+ return tableMap.get(origin).getSubtree(key);
+ }
+
@Override
public void removeMapping(MappingOrigin origin, Eid key) {
- tableMap.get(origin).removeMapping(key);
- if (notificationService) {
- // TODO
+ Eid dstAddr = null;
+ Set<Subscriber> subscribers = null;
+ Set<Subscriber> dstSubscribers = null;
+ MappingData mapping = (MappingData) tableMap.get(origin).getMapping(null, key);
+
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Removing mapping for EID {} from {}",
+ LispAddressStringifier.getString(key), origin);
+ }
+ if (LOG.isTraceEnabled() && mapping != null) {
+ LOG.trace(mapping.getString());
+ }
+
+ MappingRecord notificationMapping = null;
+
+ if (mapping != null) {
+ notificationMapping = mapping.getRecord();
+ subscribers = getSubscribers(key);
+ // For SrcDst LCAF also send SMRs to Dst prefix
+ if (key.getAddress() instanceof SourceDestKey) {
+ dstAddr = SourceDestKeyHelper.getDstBinary(key);
+ dstSubscribers = getSubscribers(dstAddr);
+ }
+ }
+
+ removeSubscribersConditionally(origin, key);
+
+ if (origin == MappingOrigin.Southbound) {
+ removeFromSbTimeoutService(key);
+ }
+
+ if (origin == MappingOrigin.Southbound && mapping != null && mapping.isPositive().or(false)) {
+ mergeNegativePrefixes(key);
+ } else {
+ // mergeNegativePrefixes() above removes the mapping, so addNegativeMapping() will work correctly
+ tableMap.get(origin).removeMapping(key);
+ }
+
+ if (notificationMapping != null) {
+ publishNotification(notificationMapping, key, subscribers, dstSubscribers, MappingChange.Removed);
+ notifyChildren(key, notificationMapping, MappingChange.Removed);
+ if (dstAddr != null) {
+ notifyChildren(dstAddr, notificationMapping, MappingChange.Removed);
+ }
+ }
+ }
+
+ public void notifyChange(Eid eid, MappingRecord mapping, MappingChange mappingChange) {
+ Set<Subscriber> subscribers = getSubscribers(eid);
+
+ Set<Subscriber> dstSubscribers = null;
+ // For SrcDst LCAF also send SMRs to Dst prefix
+ if (eid.getAddress() instanceof SourceDestKey) {
+ Eid dstAddr = SourceDestKeyHelper.getDstBinary(eid);
+ dstSubscribers = getSubscribers(dstAddr);
+ notifyChildren(dstAddr, mapping, mappingChange);
+ }
+
+ // No reason to send a notification when no subscribers exist
+ if (subscribers != null || dstSubscribers != null) {
+ publishNotification(mapping, eid, subscribers, dstSubscribers, mappingChange);
+ }
+
+ notifyChildren(eid, mapping, mappingChange);
+ }
+
+ private void notifyChildren(Eid eid, MappingRecord mapping, MappingChange mappingChange) {
+ // Update/created only happens for NB mappings. We assume no overlapping prefix support for NB mappings - so
+ // this NB mapping should not have any children. Both for NB first and NB&SB cases all subscribers for SB
+ // prefixes that are equal or more specific to this NB prefix have to be notified of the potential change.
+ // Each subscriber is notified for the prefix that it is currently subscribed to, and MS should return to them
+ // a Map-Reply with the same prefix and update mapping in cases of EID_INTERSECTION_RLOC_NB_FIRST which is a
+ // new option we are creating TODO
+ Set<Eid> childPrefixes = getSubtree(MappingOrigin.Southbound, eid);
+ if (childPrefixes == null || childPrefixes.isEmpty()) {
+ return;
+ }
+
+ childPrefixes.remove(eid);
+ for (Eid prefix : childPrefixes) {
+ Set<Subscriber> subscribers = getSubscribers(prefix);
+ // No reason to send a notification when no subscribers exist
+ if (subscribers != null) {
+ publishNotification(mapping, prefix, subscribers, null, mappingChange);
+ }
+ }
+ }
+
+ private void publishNotification(MappingRecord mapping, Eid eid, Set<Subscriber> subscribers,
+ Set<Subscriber> dstSubscribers, MappingChange mappingChange) {
+ try {
+ // The notifications are used for sending SMR.
+ notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
+ mapping, eid, subscribers, dstSubscribers, mappingChange));
+ } catch (InterruptedException e) {
+ LOG.warn("Notification publication interrupted!");
}
}
+ /*
+ * Merges adjacent negative prefixes and notifies their subscribers.
+ */
+ private void mergeNegativePrefixes(Eid eid) {
+ LOG.debug("Merging negative prefixes starting from EID {}", LispAddressStringifier.getString(eid));
+
+ // If we delete nodes while we walk up the radix trie the algorithm will give incorrect results, because
+ // removals rearrange relationships in the trie. So we save prefixes to be removed into a HashMap.
+ Map<Eid, MappingData> mergedMappings = new HashMap<>();
+
+ Eid currentNode = smc.getSiblingPrefix(eid);
+ MappingData mapping = (MappingData) smc.getMapping(null, currentNode);
+ if (mapping != null && mapping.isNegative().or(false)) {
+ mergedMappings.put(currentNode, mapping);
+ } else {
+ return;
+ }
+
+ Eid previousNode = currentNode;
+ currentNode = smc.getVirtualParentSiblingPrefix(currentNode);
+ while (currentNode != null) {
+ mapping = (MappingData) smc.getMapping(null, currentNode);
+ if (mapping != null && mapping.isNegative().or(false)) {
+ mergedMappings.put(currentNode, mapping);
+ } else {
+ break;
+ }
+ previousNode = currentNode;
+ currentNode = smc.getVirtualParentSiblingPrefix(previousNode);
+ }
+
+ for (Eid key : mergedMappings.keySet()) {
+ removeSbMapping(key, mergedMappings.get(key));
+ }
+ smc.removeMapping(eid);
+
+ addNegativeMapping(getVirtualParent(previousNode));
+ }
+
+ private static Eid getVirtualParent(Eid eid) {
+ if (eid.getAddress() instanceof Ipv4PrefixBinary) {
+ Ipv4PrefixBinary prefix = (Ipv4PrefixBinary) eid.getAddress();
+ short parentPrefixLength = (short) (prefix.getIpv4MaskLength().toJava() - 1);
+ byte[] parentPrefix = MaskUtil.normalizeByteArray(prefix.getIpv4AddressBinary().getValue(),
+ parentPrefixLength);
+ return LispAddressUtil.asIpv4PrefixBinaryEid(eid, parentPrefix, parentPrefixLength);
+ } else if (eid.getAddress() instanceof Ipv6PrefixBinary) {
+ Ipv6PrefixBinary prefix = (Ipv6PrefixBinary) eid.getAddress();
+ short parentPrefixLength = (short) (prefix.getIpv6MaskLength().toJava() - 1);
+ byte[] parentPrefix = MaskUtil.normalizeByteArray(prefix.getIpv6AddressBinary().getValue(),
+ parentPrefixLength);
+ return LispAddressUtil.asIpv6PrefixBinaryEid(eid, parentPrefix, parentPrefixLength);
+ }
+ return null;
+ }
+
+ @Override
+ public synchronized void subscribe(Subscriber subscriber, Eid subscribedEid) {
+ Set<Subscriber> subscribers = getSubscribers(subscribedEid);
+ if (subscribers == null) {
+ subscribers = Sets.newConcurrentHashSet();
+ } else if (subscribers.contains(subscriber)) {
+ // If there is an entry already for this subscriber, remove it, so that it gets the new timestamp
+ subscribers.remove(subscriber);
+ }
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Adding new subscriber {} for EID {}", subscriber.getString(),
+ LispAddressStringifier.getString(subscribedEid));
+ }
+ subscribers.add(subscriber);
+ addSubscribers(subscribedEid, subscribers);
+ }
+
+ private void addSubscribers(Eid address, Set<Subscriber> subscribers) {
+ LoggingUtil.logSubscribers(LOG, address, subscribers);
+ subscriberdb.put(address, subscribers);
+ }
+
+ @Override
+ public Set<Subscriber> getSubscribers(Eid address) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Retrieving subscribers for EID {}", LispAddressStringifier.getString(address));
+ }
+
+ Set<Subscriber> subscribers = subscriberdb.get(address);
+ LoggingUtil.logSubscribers(LOG, address, subscribers);
+ return subscribers;
+ }
+
+ /*
+ * Only remove subscribers if there is no exact match mapping in the map-cache other than the one specified by
+ * origin. Right now we only have two origins, but in case we will have more, we only need to update this method,
+ * not the callers. We use getData() instead of getMapping to do exact match instead of longest prefix match.
+ */
+ private void removeSubscribersConditionally(MappingOrigin origin, Eid address) {
+ if (origin == MappingOrigin.Southbound) {
+ if (pmc.getData(address, SubKeys.RECORD) == null) {
+ removeSubscribers(address);
+ }
+ } else if (origin == MappingOrigin.Northbound) {
+ if (smc.getData(address, SubKeys.RECORD) == null) {
+ removeSubscribers(address);
+ }
+ }
+ }
+
+ private void removeSubscribers(Eid address) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Removing subscribers for EID {}", LispAddressStringifier.getString(address));
+ }
+ subscriberdb.remove(address);
+ }
+
@Override
public void addAuthenticationKey(Eid key, MappingAuthkey authKey) {
LOG.debug("Adding authentication key '{}' with key-ID {} for {}", authKey.getKeyString(), authKey.getKeyType(),
@Override
public void addData(MappingOrigin origin, Eid key, String subKey, Object data) {
if (LOG.isDebugEnabled()) {
- LOG.debug("Add data of class {} for key {} and subkey {}", data.getClass(),
+ LOG.debug("Add data of {} for key {} and subkey {}", data.getClass(),
LispAddressStringifier.getString(key), subKey);
}
tableMap.get(origin).addData(key, subKey, data);
tableMap.get(origin).removeData(key, subKey);
}
+ @Override
+ public Eid getParentPrefix(Eid key) {
+ return smc.getParentPrefix(key);
+ }
+
/**
* Restore all mappings and keys from mdsal datastore.
@Override
public String printMappings() {
- final StringBuffer sb = new StringBuffer();
- sb.append("PolicyMapCache\n--------------\n");
+ sbMappingTimeoutService.removeExpiredMappings();
+
+ final StringBuilder sb = new StringBuilder();
+ sb.append("Policy map-cache\n----------------\n");
sb.append(pmc.printMappings());
- sb.append("SbMapCache\n----------\n");
+ sb.append("\nSouthbound map-cache\n--------------------\n");
sb.append(smc.printMappings());
return sb.toString();
}
+ @Override
+ public String prettyPrintMappings() {
+ sbMappingTimeoutService.removeExpiredMappings();
+
+ final StringBuilder sb = new StringBuilder();
+ sb.append("Policy map-cache\n----------------\n");
+ sb.append(pmc.prettyPrintMappings());
+ sb.append("\nSouthbound map-cache\n--------------------\n");
+ sb.append(smc.prettyPrintMappings());
+ sb.append("\nSubscribers\n-----------\n");
+ sb.append(prettyPrintSubscribers(subscriberdb));
+ return sb.toString();
+ }
+
+ private static String prettyPrintSubscribers(Map<Eid, Set<Subscriber>> subscribers) {
+ final StringBuilder sb = new StringBuilder();
+ for (Eid eid: subscribers.keySet()) {
+ sb.append("\n ");
+ sb.append(LispAddressStringifier.getString(eid));
+ sb.append("\n");
+ sb.append(LispMapCacheStringifier.prettyPrintSubscriberSet(subscribers.get(eid), 4));
+ sb.append("\n");
+ }
+ return sb.toString();
+ }
+
@Override
public String printKeys() {
return akdb.printKeys();
}
+ @Override
+ public String prettyPrintKeys() {
+ return akdb.prettyPrintKeys();
+ }
+
public void cleanCaches() {
dao.removeAll();
+ subscriberdb.clear();
buildMapCaches();
}
- /*
- * XXX Mappings and keys should be separated for this to work properly, as is it will remove northbound originated
- * authentication keys too, since they are currently stored in smc.
- */
public void cleanSBMappings() {
smc = new SimpleMapCache(sdao);
}
Code Review / lispflowmapping.git / blobdiff