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 org.opendaylight.lispflowmapping.interfaces.mapcache.IMappingSystem;
  14 import org.opendaylight.lispflowmapping.lisp.type.MappingData;
  15 import org.opendaylight.lispflowmapping.lisp.util.LispAddressUtil;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.binding.api.DataObjectModification;
  18 import org.opendaylight.mdsal.binding.api.DataObjectModification.ModificationType;
  19 import org.opendaylight.mdsal.binding.api.DataTreeModification;
  20 import org.opendaylight.mdsal.binding.api.NotificationPublishService;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.eid.container.Eid;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecord;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.locatorrecords.LocatorRecordBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.container.MappingRecord;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.lisp.proto.rev151105.mapping._record.container.MappingRecordBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingDatabase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingOrigin;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.Mapping;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.MappingBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.database.VirtualNetworkIdentifier;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * DataListener for all Mapping modification events.
  37  *
  38  * @author Lorand Jakab
  39  * @author Florin Coras
  40  *
  41  */
  42 public class MappingDataListener extends AbstractDataListener<Mapping> {
  43     private static final Logger LOG = LoggerFactory.getLogger(MappingDataListener.class);
  44     private IMappingSystem mapSystem;
  45     private NotificationPublishService notificationPublishService;
  46     private final boolean isMaster = false;
  47
  48     public MappingDataListener(DataBroker broker, IMappingSystem msmr, NotificationPublishService nps) {
  49         setBroker(broker);
  50         setMappingSystem(msmr);
  51         setNotificationProviderService(nps);
  52         setPath(InstanceIdentifier.create(MappingDatabase.class).child(VirtualNetworkIdentifier.class)
  53                 .child(Mapping.class));
  54         LOG.trace("Registering Mapping listener.");
  55         registerDataChangeListener();
  56     }
  57
  58     public void setNotificationProviderService(NotificationPublishService nps) {
  59         this.notificationPublishService = nps;
  60     }
  61
  62     void setMappingSystem(IMappingSystem msmr) {
  63         this.mapSystem = msmr;
  64     }
  65
  66     @Override
  67     public void onDataTreeChanged(Collection<DataTreeModification<Mapping>> changes) {
  68         for (DataTreeModification<Mapping> change : changes) {
  69             final DataObjectModification<Mapping> mod = change.getRootNode();
  70
  71             if (ModificationType.DELETE == mod.getModificationType()) {
  72                 // Process deleted mappings
  73
  74                 final Mapping mapping = mod.getDataBefore();
  75
  76                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
  77                 // before being persisted, except for cluster slaves
  78                 if (mapping.getOrigin() == MappingOrigin.Southbound && mapSystem.isMaster()) {
  79                     continue;
  80                 }
  81
  82                 LOG.trace("Received deleted data");
  83                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
  84                 LOG.trace("Value: {}", mapping);
  85
  86                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
  87
  88                 mapSystem.removeMapping(convertedMapping.getOrigin(), convertedMapping.getMappingRecord().getEid());
  89
  90             } else if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType() || ModificationType.WRITE == mod
  91                     .getModificationType()) {
  92                 final Mapping mapping = mod.getDataAfter();
  93
  94                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
  95                 // before being persisted, except for cluster slaves XXX separate NB and SB to avoid ignoring
  96                 // SB notifications
  97                 if (mapping.getOrigin() == MappingOrigin.Southbound && mapSystem.isMaster()) {
  98                     continue;
  99                 }
 100
 101                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
 102                 Eid convertedEid = convertedMapping.getMappingRecord().getEid();
 103
 104                 if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType()) {
 105                     LOG.trace("Received update data");
 106                     LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
 107                     LOG.trace("Value: {}", mapping);
 108                     mapSystem.updateMapping(convertedMapping.getOrigin(), convertedEid,
 109                             new MappingData(convertedMapping.getMappingRecord()));
 110                 } else {
 111                     LOG.trace("Received write data");
 112                     LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
 113                     LOG.trace("Value: {}", mapping);
 114                     mapSystem.addMapping(convertedMapping.getOrigin(), convertedEid,
 115                             new MappingData(convertedMapping.getMappingRecord()));
 116                 }
 117             } else {
 118                 LOG.warn("Ignoring unhandled modification type {}", mod.getModificationType());
 119             }
 120         }
 121     }
 122
 123     private static Mapping convertToBinaryIfNecessary(Mapping mapping) {
 124         MappingRecord originalRecord = mapping.getMappingRecord();
 125         List<LocatorRecord> originalLocators = originalRecord.getLocatorRecord();
 126
 127         List<LocatorRecord> convertedLocators = null;
 128         if (originalLocators != null) {
 129             // If convertedLocators is non-null, while originalLocators is also non-null, conversion has been made
 130             convertedLocators = convertToBinaryIfNecessary(originalLocators);
 131         }
 132
 133         if (LispAddressUtil.addressNeedsConversionToBinary(originalRecord.getEid().getAddress())
 134                 || originalLocators != null && convertedLocators != null) {
 135             MappingRecordBuilder mrb = new MappingRecordBuilder(originalRecord);
 136             mrb.setEid(LispAddressUtil.convertToBinary(originalRecord.getEid()));
 137             if (convertedLocators != null) {
 138                 mrb.setLocatorRecord(convertedLocators);
 139             }
 140             return new MappingBuilder(mapping).setMappingRecord(mrb.build()).build();
 141         }
 142         return mapping;
 143     }
 144
 145     private static List<LocatorRecord> convertToBinaryIfNecessary(List<LocatorRecord> originalLocators) {
 146         List<LocatorRecord> convertedLocators = null;
 147         for (LocatorRecord record : originalLocators) {
 148             if (LispAddressUtil.addressNeedsConversionToBinary(record.getRloc().getAddress())) {
 149                 LocatorRecordBuilder lrb = new LocatorRecordBuilder(record);
 150                 lrb.setRloc(LispAddressUtil.convertToBinary(record.getRloc()));
 151                 if (convertedLocators == null) {
 152                     convertedLocators = new ArrayList<>();
 153                 }
 154                 convertedLocators.add(lrb.build());
 155             }
 156         }
 157         if (convertedLocators != null) {
 158             return convertedLocators;
 159         }
 160         return originalLocators;
 161     }
 162 }