mappingservice/implementation/src/main/java/org/opendaylight/lispflowmapping/implementation/mdsal/MappingDataListener.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.lispflowmapping.implementation.mdsal;
   9
  10 import java.util.ArrayList;
  11 import java.util.Collection;
  12 import java.util.List;
  13 import java.util.Set;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification;
  16 import org.opendaylight.controller.md.sal.binding.api.DataObjectModification.ModificationType;
  17 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  18 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
  19 import org.opendaylight.lispflowmapping.implementation.util.MSNotificationInputUtil;
  20 import org.opendaylight.lispflowmapping.interfaces.dao.Subscriber;
  21 import org.opendaylight.lispflowmapping.interfaces.mapcache.IMappingSystem;
  22 import org.opendaylight.lispflowmapping.lisp.type.MappingData;
  23 import org.opendaylight.lispflowmapping.lisp.util.LispAddressUtil;
  24 import org.opendaylight.lispflowmapping.lisp.util.SourceDestKeyHelper;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.lisp.address.types.rev151105.lisp.address.address.SourceDestKey;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecord;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecordBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecord;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping.record.container.MappingRecordBuilder;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingChange;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingDatabase;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingOrigin;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.Mapping;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.MappingBuilder;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.database.VirtualNetworkIdentifier;
  37 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41 /**
  42  * DataListener for all Mapping modification events.
  43  *
  44  * @author Lorand Jakab
  45  * @author Florin Coras
  46  *
  47  */
  48 public class MappingDataListener extends AbstractDataListener<Mapping> {
  49     private static final Logger LOG = LoggerFactory.getLogger(MappingDataListener.class);
  50     private IMappingSystem mapSystem;
  51     private NotificationPublishService notificationPublishService;
  52     private boolean isMaster = false;
  53
  54     public MappingDataListener(DataBroker broker, IMappingSystem msmr, NotificationPublishService nps) {
  55         setBroker(broker);
  56         setMappingSystem(msmr);
  57         setNotificationProviderService(nps);
  58         setPath(InstanceIdentifier.create(MappingDatabase.class).child(VirtualNetworkIdentifier.class)
  59                 .child(Mapping.class));
  60         LOG.trace("Registering Mapping listener.");
  61         registerDataChangeListener();
  62     }
  63
  64     public void setNotificationProviderService(NotificationPublishService nps) {
  65         this.notificationPublishService = nps;
  66     }
  67
  68     void setMappingSystem(IMappingSystem msmr) {
  69         this.mapSystem = msmr;
  70     }
  71
  72     @Override
  73     public void onDataTreeChanged(Collection<DataTreeModification<Mapping>> changes) {
  74         for (DataTreeModification<Mapping> change : changes) {
  75             final DataObjectModification<Mapping> mod = change.getRootNode();
  76
  77             if (ModificationType.DELETE == mod.getModificationType()) {
  78                 // Process deleted mappings
  79
  80                 final Mapping mapping = mod.getDataBefore();
  81
  82                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
  83                 // before being persisted, except for cluster slaves
  84                 if (mapping.getOrigin() == MappingOrigin.Southbound && mapSystem.isMaster()) {
  85                     continue;
  86                 }
  87
  88                 LOG.trace("Received deleted data");
  89                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
  90                 LOG.trace("Value: {}", mapping);
  91
  92                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
  93
  94                 mapSystem.removeMapping(convertedMapping.getOrigin(), convertedMapping.getMappingRecord().getEid());
  95
  96             } else if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType() || ModificationType.WRITE == mod
  97                     .getModificationType()) {
  98                 final Mapping mapping = mod.getDataAfter();
  99
 100                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
 101                 // before being persisted, except for cluster slaves XXX separate NB and SB to avoid ignoring
 102                 // SB notifications
 103                 if (mapping.getOrigin() == MappingOrigin.Southbound && mapSystem.isMaster()) {
 104                     continue;
 105                 }
 106
 107                 MappingChange mappingChange;
 108
 109                 if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType()) {
 110                     LOG.trace("Received update data");
 111                     mappingChange = MappingChange.Updated;
 112                 } else {
 113                     LOG.trace("Received write data");
 114                     mappingChange = MappingChange.Created;
 115                 }
 116                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
 117                 LOG.trace("Value: {}", mapping);
 118
 119                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
 120                 Eid convertedEid = convertedMapping.getMappingRecord().getEid();
 121
 122                 mapSystem.addMapping(convertedMapping.getOrigin(), convertedEid,
 123                         new MappingData(convertedMapping.getMappingRecord()));
 124                 Set<Subscriber> subscribers = mapSystem.getSubscribers(convertedEid);
 125
 126                 Set<Subscriber> dstSubscribers = null;
 127                 // For SrcDst LCAF also send SMRs to Dst prefix
 128                 if (convertedEid.getAddress() instanceof SourceDestKey) {
 129                     Eid dstAddr = SourceDestKeyHelper.getDstBinary(convertedEid);
 130                     dstSubscribers = mapSystem.getSubscribers(dstAddr);
 131                 }
 132
 133                 try {
 134                     // The notifications are used for sending SMR.
 135                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
 136                             convertedMapping, subscribers, dstSubscribers, mappingChange));
 137                 } catch (InterruptedException e) {
 138                     LOG.warn("Notification publication interrupted!");
 139                 }
 140
 141             } else {
 142                 LOG.warn("Ignoring unhandled modification type {}", mod.getModificationType());
 143             }
 144         }
 145     }
 146
 147     private static Mapping convertToBinaryIfNecessary(Mapping mapping) {
 148         MappingRecord originalRecord = mapping.getMappingRecord();
 149         List<LocatorRecord> originalLocators = originalRecord.getLocatorRecord();
 150
 151         List<LocatorRecord> convertedLocators = null;
 152         if (originalLocators != null) {
 153             // If convertedLocators is non-null, while originalLocators is also non-null, conversion has been made
 154             convertedLocators = convertToBinaryIfNecessary(originalLocators);
 155         }
 156
 157         if (LispAddressUtil.addressNeedsConversionToBinary(originalRecord.getEid().getAddress())
 158                 || (originalLocators != null && convertedLocators != null)) {
 159             MappingRecordBuilder mrb = new MappingRecordBuilder(originalRecord);
 160             mrb.setEid(LispAddressUtil.convertToBinary(originalRecord.getEid()));
 161             if (convertedLocators != null) {
 162                 mrb.setLocatorRecord(convertedLocators);
 163             }
 164             return new MappingBuilder(mapping).setMappingRecord(mrb.build()).build();
 165         }
 166         return mapping;
 167     }
 168
 169     private static List<LocatorRecord> convertToBinaryIfNecessary(List<LocatorRecord> originalLocators) {
 170         List<LocatorRecord> convertedLocators = null;
 171         for (LocatorRecord record : originalLocators) {
 172             if (LispAddressUtil.addressNeedsConversionToBinary(record.getRloc().getAddress())) {
 173                 LocatorRecordBuilder lrb = new LocatorRecordBuilder(record);
 174                 lrb.setRloc(LispAddressUtil.convertToBinary(record.getRloc()));
 175                 if (convertedLocators == null) {
 176                     convertedLocators = new ArrayList<LocatorRecord>();
 177                 }
 178                 convertedLocators.add(lrb.build());
 179             }
 180         }
 181         if (convertedLocators != null) {
 182             return convertedLocators;
 183         }
 184         return originalLocators;
 185     }
 186 }