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