/*
- * 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.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 java.util.concurrent.ConcurrentHashMap;
+import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
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.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.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.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.MappingChanged;
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 NotificationPublishService notificationPublishService;
private boolean mappingMerge;
private ILispDAO dao;
private ILispDAO sdao;
private ILispMapCache smc;
private IMapCache pmc;
+ private ConcurrentHashMap<Eid, Set<Subscriber>> subscriberdb = new ConcurrentHashMap<>();
private IAuthKeyDb akdb;
private final EnumMap<MappingOrigin, IMapCache> tableMap = new EnumMap<>(MappingOrigin.class);
private DataStoreBackEnd dsbe;
private ISouthBoundMappingTimeoutService sbMappingTimeoutService;
- public MappingSystem(ILispDAO dao, boolean iterateMask, boolean notifications, boolean mappingMerge) {
+ public MappingSystem(ILispDAO dao, boolean iterateMask, NotificationPublishService nps, boolean mappingMerge) {
this.dao = dao;
- this.notificationService = notifications;
+ this.notificationPublishService = nps;
this.mappingMerge = mappingMerge;
buildMapCaches();
tableMap.get(origin).addMapping(key, mappingData);
}
+ @SuppressWarnings("unchecked")
private void clearPresentXtrIdMappings(Eid key) {
List<MappingData> allXtrMappingList = (List<MappingData>) (List<?>) smc.getAllXtrIdMappings(key);
smc.addData(key, SubKeys.TIME_BUCKET_ID, updatedBucketId);
}
+ @Override
+ public MappingData addNegativeMapping(Eid key) {
+ MappingRecord mapping = buildNegativeMapping(key);
+ MappingData mappingData = new MappingData(mapping);
+ LOG.debug("Adding negative mapping for EID {}", LispAddressStringifier.getString(key));
+ 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.
if (mappingData != null && mappingData.getXtrId() != null) {
removeSbXtrIdSpecificMapping(key, mappingData.getXtrId(), mappingData);
}
+
removeFromSbTimeoutService(key);
+ Set<Subscriber> subscribers = getSubscribers(key);
smc.removeMapping(key);
dsbe.removeMapping(DSBEInputUtil.toMapping(MappingOrigin.Southbound, key, mappingData));
+ notifyChange(mappingData, subscribers, null, MappingChange.Removed);
+ removeSubscribers(key);
}
private void removeFromSbTimeoutService(Eid key) {
@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 void removeMapping(MappingOrigin origin, Eid key) {
+ 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()) {
+ LOG.trace(mapping.getString());
+ }
+
+ MappingData notificationMapping = mapping;
+
+ if (mapping != null) {
+ subscribers = getSubscribers(key);
+ // For SrcDst LCAF also send SMRs to Dst prefix
+ if (key.getAddress() instanceof SourceDestKey) {
+ Eid dstAddr = SourceDestKeyHelper.getDstBinary(key);
+ dstSubscribers = getSubscribers(dstAddr);
+ if (!(mapping.getRecord().getEid().getAddress() instanceof SourceDestKey)) {
+ notificationMapping = new MappingData(new MappingRecordBuilder().setEid(key).build());
+ }
+ }
+ }
+
+ removeSubscribers(key);
+
if (origin == MappingOrigin.Southbound) {
removeFromSbTimeoutService(key);
}
- tableMap.get(origin).removeMapping(key);
- if (notificationService) {
- // TODO
+
+ 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) {
+ notifyChange(notificationMapping, subscribers, dstSubscribers, MappingChange.Removed);
+ }
+ }
+
+ private void notifyChange(MappingData mapping, Set<Subscriber> subscribers, Set<Subscriber> dstSubscribers,
+ MappingChange mappingChange) {
+ MappingChanged notification = MSNotificationInputUtil.toMappingChanged(mapping, subscribers, dstSubscribers,
+ mappingChange);
+ try {
+ notificationPublishService.putNotification(notification);
+ } 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() - 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() - 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;
+ }
+
+ private void removeSubscribers(Eid address) {
+ if (LOG.isDebugEnabled()) {
+ LOG.debug("Removing subscribers for EID {}", LispAddressStringifier.getString(address));
}
+ subscriberdb.remove(address);
}
@Override
@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);
@Override
public String printMappings() {
final StringBuffer sb = new StringBuffer();
- sb.append("PolicyMapCache\n--------------\n");
+ 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() {
+ final StringBuffer sb = new StringBuffer();
+ 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 StringBuffer sb = new StringBuffer();
+ 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