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