/*
- * Copyright (c) 2013 Contextream, Inc. and others. All rights reserved.
+ * Copyright (c) 2014 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 java.util.Map;
-
-import org.opendaylight.lispflowmapping.interfaces.dao.ILispDAO;
-import org.opendaylight.lispflowmapping.interfaces.dao.IMappingServiceKey;
-import org.opendaylight.lispflowmapping.interfaces.dao.MappingServiceKeyUtil;
-import org.opendaylight.lispflowmapping.interfaces.dao.MappingServiceRLOC;
-import org.opendaylight.lispflowmapping.interfaces.dao.MappingServiceValue;
-import org.opendaylight.lispflowmapping.interfaces.lisp.IMapResolver;
-import org.opendaylight.lispflowmapping.type.lisp.EidRecord;
-import org.opendaylight.lispflowmapping.type.lisp.EidToLocatorRecord;
-import org.opendaylight.lispflowmapping.type.lisp.MapReply;
-import org.opendaylight.lispflowmapping.type.lisp.MapRequest;
-import org.opendaylight.lispflowmapping.type.lisp.address.IMaskable;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Sets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import org.apache.commons.lang3.exception.ExceptionUtils;
+import org.opendaylight.lispflowmapping.interfaces.dao.SubKeys;
+import org.opendaylight.lispflowmapping.interfaces.dao.SubscriberRLOC;
+import org.opendaylight.lispflowmapping.interfaces.lisp.IMapRequestResultHandler;
+import org.opendaylight.lispflowmapping.interfaces.lisp.IMapResolverAsync;
+import org.opendaylight.lispflowmapping.interfaces.mappingservice.IMappingService;
+import org.opendaylight.lispflowmapping.lisp.util.LispAddressStringifier;
+import org.opendaylight.lispflowmapping.lisp.util.LispAddressUtil;
+import org.opendaylight.lispflowmapping.lisp.util.SourceDestKeyHelper;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.Ipv4Afi;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.Ipv4PrefixAfi;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.Ipv6Afi;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.Ipv6PrefixAfi;
+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.SourceDestKeyLcaf;
+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.ExplicitLocatorPath;
+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.Ipv4BinaryAfi;
+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.Ipv6BinaryAfi;
+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.proto.rev151105.MapRequest;
+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.list.EidItem;
+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.record.container.MappingRecord;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecord.Action;
+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.MappingRecordItemBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapreplymessage.MapReplyBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.maprequest.ItrRloc;
+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.MappingOrigin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-public class MapResolver implements IMapResolver {
- private ILispDAO dao;
- private volatile boolean shouldAuthenticate;
- private volatile boolean shouldIterateMask;
- protected static final Logger logger = LoggerFactory.getLogger(MapResolver.class);
+public class MapResolver implements IMapResolverAsync {
+ protected static final Logger LOG = LoggerFactory.getLogger(MapResolver.class);
- public MapResolver(ILispDAO dao) {
- this(dao, true, true);
+ private static final int TTL_RLOC_TIMED_OUT = 1;
+ private static final int TTL_NO_RLOC_KNOWN = 15;
+
+ private IMappingService mapService;
+ private boolean subscriptionService;
+ private String elpPolicy;
+ private IMapRequestResultHandler requestHandler;
+ private boolean authenticate = true;
+
+ public MapResolver(IMappingService mapService, boolean smr, String elpPolicy,
+ IMapRequestResultHandler requestHandler) {
+ Preconditions.checkNotNull(mapService);
+ this.subscriptionService = smr;
+ this.mapService = mapService;
+ this.elpPolicy = elpPolicy;
+ this.requestHandler = requestHandler;
}
- public MapResolver(ILispDAO dao, boolean authenticate, boolean iterateMask) {
- this.dao = dao;
- this.shouldAuthenticate = authenticate;
- this.shouldIterateMask = iterateMask;
+ public void handleMapRequest(MapRequest request) {
+ // SMRs and RLOC probes are directed towards xTRs and we're a Map-Resolver here, so ignore them
+ if (request.isSmr() != null && request.isSmr()) {
+ LOG.debug("Map-Resolver ignoring incoming SMR control message.");
+ return;
+ }
+ if (request.isProbe() != null && request.isProbe()) {
+ LOG.debug("Map-Resolver ignoring incoming RLOC probe control message.");
+ return;
+ }
+ Eid srcEid = null;
+ if (request.getSourceEid() != null) {
+ srcEid = request.getSourceEid().getEid();
+ }
+ MapReplyBuilder replyBuilder = new MapReplyBuilder();
+ replyBuilder.setEchoNonceEnabled(false);
+ replyBuilder.setProbe(false);
+ replyBuilder.setSecurityEnabled(false);
+ replyBuilder.setNonce(request.getNonce());
+ replyBuilder.setMappingRecordItem(new ArrayList<>());
+ List<ItrRloc> itrRlocs = request.getItrRloc();
+ final IpAddressBinary sourceRloc = request.getSourceRloc();
+
+ for (EidItem eidRecord : request.getEidItem()) {
+ MappingRecord mapping = (MappingRecord) mapService.getMapping(srcEid,
+ eidRecord.getEid());
+ if (mapping != null) {
+ if (itrRlocs != null && itrRlocs.size() != 0) {
+ if (subscriptionService) {
+ final Rloc resolvedRloc = resolveRloc(itrRlocs, sourceRloc);
+ updateSubscribers(resolvedRloc, eidRecord.getEid(), mapping.getEid(), srcEid);
+ }
+ mapping = updateLocators(mapping, itrRlocs);
+ }
+ mapping = fixIfNotSDRequest(mapping, eidRecord.getEid());
+ } else {
+ mapping = getNegativeMapping(eidRecord.getEid());
+ }
+ replyBuilder.getMappingRecordItem().add(new MappingRecordItemBuilder().setMappingRecord(mapping).build());
+ }
+ requestHandler.handleMapReply(replyBuilder.build());
}
- public MapReply handleMapRequest(MapRequest request) {
- if (dao == null) {
- logger.warn("handleMapRequest called while dao is uninitialized");
- return null;
- }
- MapReply mapReply = new MapReply();
- mapReply.setNonce(request.getNonce());
-
- for (EidRecord eid : request.getEids()) {
- EidToLocatorRecord eidToLocators = new EidToLocatorRecord();
- eidToLocators.setMaskLength(eid.getMaskLength())//
- .setPrefix(eid.getPrefix());
- IMappingServiceKey key = MappingServiceKeyUtil.generateMappingServiceKey(eid.getPrefix(), eid.getMaskLength());
- Map<String, ?> locators = dao.get(key);
- if (shouldIterateMask() && locators == null && key.getEID() instanceof IMaskable) {
- locators = findMaskLocators(key);
+ private static boolean isEqualIpVersion(IpAddressBinary srcRloc, Rloc rloc) {
+ if (srcRloc.getIpv4AddressBinary() != null) {
+ if (rloc.getAddressType() == Ipv4Afi.class
+ || rloc.getAddressType() == Ipv4BinaryAfi.class
+ || rloc.getAddressType() == Ipv4PrefixAfi.class
+ || rloc.getAddressType() == Ipv4PrefixBinaryAfi.class) {
+ return true;
}
- if (locators != null) {
- addLocators(eidToLocators, locators);
+ } else if (rloc.getAddressType() == Ipv6Afi.class
+ || rloc.getAddressType() == Ipv6BinaryAfi.class
+ || rloc.getAddressType() == Ipv6PrefixAfi.class
+ || rloc.getAddressType() == Ipv6PrefixBinaryAfi.class) {
+ return true;
+ }
+ return false;
+ }
+
+ private Rloc resolveRloc(List<ItrRloc> itrRlocList, IpAddressBinary srcRloc) {
+ if (srcRloc == null) {
+ return itrRlocList.get(0).getRloc();
+ }
+ byte[] srcRlocByte;
+ if (srcRloc.getIpv4AddressBinary() != null) {
+ srcRlocByte = srcRloc.getIpv4AddressBinary().getValue();
+ } else {
+ srcRlocByte = srcRloc.getIpv6AddressBinary().getValue();
+ }
+
+ Rloc equalIpvRloc = null;
+ for (ItrRloc itrRloc : itrRlocList) {
+ final Rloc rloc = itrRloc.getRloc();
+ final byte[] itrRlocByte = LispAddressUtil.ipAddressToByteArray(rloc.getAddress());
+
+ // return an Rloc equal to the source Rloc
+ if (itrRlocByte != null && LispAddressUtil.compareIpAddressByteArrays(srcRlocByte, itrRlocByte) == 0) {
+ return rloc;
+ }
+ // else lookup the first Rloc with identical Ip version
+ if (equalIpvRloc == null && isEqualIpVersion(srcRloc, rloc)) {
+ equalIpvRloc = rloc;
}
- mapReply.addEidToLocator(eidToLocators);
}
+ if (equalIpvRloc != null) {
+ return equalIpvRloc;
+ } else {
+ // if none of the above, return the first Rloc
+ return itrRlocList.get(0).getRloc();
+ }
+ }
- return mapReply;
+ private MappingRecord getNegativeMapping(Eid eid) {
+ MappingRecordBuilder recordBuilder = new MappingRecordBuilder();
+ recordBuilder.setAuthoritative(false);
+ recordBuilder.setMapVersion((short) 0);
+ if (eid.getAddressType().equals(Ipv4PrefixBinaryAfi.class)
+ || eid.getAddressType().equals(Ipv6PrefixBinaryAfi.class)) {
+ recordBuilder.setEid(mapService.getWidestNegativePrefix(eid));
+ } else {
+ recordBuilder.setEid(eid);
+ }
+ recordBuilder.setAction(Action.NativelyForward);
+ if (authenticate && mapService.getAuthenticationKey(eid) != null) {
+ recordBuilder.setRecordTtl(TTL_RLOC_TIMED_OUT);
+ } else {
+ recordBuilder.setRecordTtl(TTL_NO_RLOC_KNOWN);
+ }
+ return recordBuilder.build();
}
- private Map<String, ?> findMaskLocators(IMappingServiceKey key) {
- int mask = key.getMask();
- if (mask == 0) {
- mask = ((IMaskable) key.getEID()).getMaxMask() - 1;
- key = MappingServiceKeyUtil.generateMappingServiceKey(key.getEID(), (byte) mask);
- }
- while (mask > 0) {
- ((IMaskable) key.getEID()).normalize(mask);
- mask--;
- Map<String, ?> locators = dao.get(key);
- if (locators != null) {
- return locators;
- }
+ private void updateSubscribers(Rloc itrRloc, Eid reqEid, Eid mapEid, Eid srcEid) {
+ SubscriberRLOC subscriberRloc = new SubscriberRLOC(itrRloc, srcEid);
+ Eid subscribedEid = mapEid;
+
+ // If the eid in the matched mapping is SourceDest and the requested eid IS NOT then we subscribe itrRloc only
+ // to dst from the src/dst since that what's been requested. Note though that any updates to to the src/dst
+ // mapping will be pushed to dst as well (see sendSMRs in MapServer)
+ if (mapEid.getAddressType().equals(SourceDestKeyLcaf.class)
+ && !reqEid.getAddressType().equals(SourceDestKeyLcaf.class)) {
+ subscribedEid = SourceDestKeyHelper.getDstBinary(mapEid);
}
- return null;
+
+ Set<SubscriberRLOC> subscribers = getSubscribers(subscribedEid);
+ if (subscribers == null) {
+ subscribers = Sets.newConcurrentHashSet();
+ } else if (subscribers.contains(subscriberRloc)) {
+ // If there is an entry already for this subscriberRloc, remove it, so that it gets the new
+ // timestamp
+ subscribers.remove(subscriberRloc);
+ }
+ if (LOG.isTraceEnabled()) {
+ LOG.trace("Adding new subscriber: " + LispAddressStringifier.getString(subscriberRloc.getSrcRloc()));
+ }
+ subscribers.add(subscriberRloc);
+ addSubscribers(subscribedEid, subscribers);
}
- private void addLocators(EidToLocatorRecord eidToLocators, Map<String, ?> locators) {
- try {
- MappingServiceValue value = (MappingServiceValue) locators.get("value");
- for (MappingServiceRLOC rloc : value.getRlocs()) {
- addLocator(eidToLocators, rloc);
+ // Fixes mapping if request was for simple dst EID but the matched mapping is a SourceDest
+ private MappingRecord fixIfNotSDRequest(MappingRecord mapping, Eid dstEid) {
+ if (mapping.getEid().getAddress() instanceof SourceDestKey
+ && !(dstEid.getAddress() instanceof SourceDestKey)) {
+ return new MappingRecordBuilder(mapping).setEid(
+ SourceDestKeyHelper.getDstBinary(mapping.getEid())).build();
+ }
+ return mapping;
+ }
+ private boolean locatorsNeedFixing(List<LocatorRecord> locatorRecords) {
+ for (LocatorRecord record : locatorRecords) {
+ if (record.getRloc().getAddress() instanceof ExplicitLocatorPath) {
+ return true;
}
- } catch (ClassCastException cce) {
}
+ return false;
}
- private void addLocator(EidToLocatorRecord eidToLocators, MappingServiceRLOC locatorObject) {
- if (locatorObject == null) {
- return;
+ // Process locators according to configured policy
+ private MappingRecord updateLocators(MappingRecord mapping, List<ItrRloc> itrRlocs) {
+ // no fixing if elpPolicy is default
+ if (elpPolicy.equalsIgnoreCase("default")) {
+ return mapping;
+ }
+
+ List<LocatorRecord> locatorRecords = mapping.getLocatorRecord();
+
+ // if no updated is needed, just return the mapping
+ if (!locatorsNeedFixing(locatorRecords)) {
+ return mapping;
}
+
+ MappingRecordBuilder recordBuilder = new MappingRecordBuilder(mapping);
+ recordBuilder.setLocatorRecord(new ArrayList<LocatorRecord>());
try {
- eidToLocators.addLocator(locatorObject.getRecord().clone().setRouted(true));
- eidToLocators.setAction(locatorObject.getAction());
- eidToLocators.setAuthoritative(locatorObject.isAuthoritative());
- eidToLocators.setRecordTtl(locatorObject.getTtl());
+ for (LocatorRecord record : locatorRecords) {
+ Rloc container = record.getRloc();
+
+ // For non-ELP RLOCs, or when ELP policy is default, or itrRlocs is null, just add the locator and be
+ // done
+ if ((!(container.getAddress() instanceof ExplicitLocatorPath))
+ || elpPolicy.equalsIgnoreCase("default") || itrRlocs == null) {
+ recordBuilder.getLocatorRecord().add(
+ new LocatorRecordBuilder().setLocalLocator(record.isLocalLocator())
+ .setRlocProbed(record.isRlocProbed()).setWeight(record.getWeight())
+ .setPriority(record.getPriority()).setMulticastWeight(record.getMulticastWeight())
+ .setMulticastPriority(record.getMulticastPriority()).setRouted(record.isRouted())
+ .setRloc(container).setLocatorId(record.getLocatorId()).build());
+ continue;
+ }
+
+ ExplicitLocatorPath teAddress = ((ExplicitLocatorPath) container.getAddress());
+ SimpleAddress nextHop = getNextELPHop(teAddress, itrRlocs);
+ if (nextHop != null) {
+ java.lang.Short priority = record.getPriority();
+ if (elpPolicy.equalsIgnoreCase("both")) {
+ recordBuilder.getLocatorRecord().add(
+ new LocatorRecordBuilder().setLocalLocator(record.isLocalLocator())
+ .setRlocProbed(record.isRlocProbed()).setWeight(record.getWeight())
+ .setPriority(record.getPriority())
+ .setMulticastWeight(record.getMulticastWeight())
+ .setMulticastPriority(record.getMulticastPriority())
+ .setRouted(record.isRouted()).setRloc(container)
+ .setLocatorId(record.getLocatorId()).build());
+ // Make the priority of the added simple locator lower so that ELP is used by default if
+ // the xTR understands ELP. Exclude 255, since that means don't use for unicast forwarding
+ // XXX Complex cases like several ELPs with different priorities are not handled
+ if (priority != 254 || priority != 255) {
+ priority++;
+ }
+ }
+ // Build and add the simple RLOC
+ recordBuilder.getLocatorRecord().add(
+ new LocatorRecordBuilder().setLocalLocator(record.isLocalLocator())
+ .setRlocProbed(record.isRlocProbed()).setWeight(record.getWeight())
+ .setPriority(priority).setMulticastWeight(record.getMulticastWeight())
+ .setMulticastPriority(record.getMulticastPriority()).setRouted(record.isRouted())
+ .setRloc(LispAddressUtil.toRloc(nextHop))
+ .setLocatorId(record.getLocatorId()).build());
+ }
+ }
} catch (ClassCastException cce) {
+ LOG.error("Class Cast Exception while building EidToLocatorRecord: {}", ExceptionUtils.getStackTrace(cce));
+ }
+
+ return recordBuilder.build();
+ }
+
+ private SimpleAddress getNextELPHop(ExplicitLocatorPath elp, List<ItrRloc> itrRlocs) {
+ SimpleAddress nextHop = null;
+ List<Hop> hops = elp.getExplicitLocatorPath().getHop();
+
+ if (hops != null && hops.size() > 0) {
+ // By default we return the first hop
+ nextHop = hops.get(0).getAddress();
+ for (Hop hop : hops) {
+ Address hopAddress = LispAddressUtil.addressFromSimpleAddress(hop.getAddress());
+ for (ItrRloc itrRloc : itrRlocs) {
+ if (itrRloc.getRloc().getAddress().equals(hopAddress)) {
+ int iterator = hops.indexOf(hop);
+ if (iterator < hops.size() - 1) {
+ nextHop = hops.get(iterator + 1).getAddress();
+ return nextHop;
+ }
+ }
+ }
+ }
}
+
+ return nextHop;
}
- public boolean shouldIterateMask() {
- return shouldIterateMask;
+ @SuppressWarnings("unchecked")
+ private Set<SubscriberRLOC> getSubscribers(Eid address) {
+ return (Set<SubscriberRLOC>) mapService.getData(MappingOrigin.Southbound, address, SubKeys.SUBSCRIBERS);
}
- public boolean shouldAuthenticate() {
- return shouldAuthenticate;
+ private void addSubscribers(Eid address, Set<SubscriberRLOC> subscribers) {
+ mapService.addData(MappingOrigin.Southbound, address, SubKeys.SUBSCRIBERS, subscribers);
}
- public void setShouldIterateMask(boolean shouldIterateMask) {
- this.shouldIterateMask = shouldIterateMask;
+ @Override
+ public void setSubscriptionService(boolean smr) {
+ subscriptionService = smr;
}
- public void setShouldAuthenticate(boolean shouldAuthenticate) {
- this.shouldAuthenticate = shouldAuthenticate;
+ @Override
+ public void setElpPolicy(String elpPolicy) {
+ this.elpPolicy = elpPolicy;
}
+ @Override
+ public void setShouldAuthenticate(boolean shouldAuthenticate) {
+ this.authenticate = shouldAuthenticate;
+ }
}
Code Review / lispflowmapping.git / blobdiff