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
  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.mapcache.IMappingSystem;
  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
  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.
  78                 if (mapping.getOrigin() == MappingOrigin.Southbound) {
  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                 try {
  90                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
  91                             convertedMapping, MappingChange.Removed));
  92                 } catch (InterruptedException e) {
  93                     LOG.warn("Notification publication interrupted!");
  94                 }
  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. XXX separate NB and SB to avoid ignoring SB notifications
 102                 if (mapping.getOrigin() == MappingOrigin.Southbound) {
 103                     continue;
 104                 }
 105
 106                 MappingChange mappingChange;
 107
 108                 if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType()) {
 109                     LOG.trace("Received update data");
 110                     mappingChange = MappingChange.Updated;
 111                 } else {
 112                     LOG.trace("Received write data");
 113                     mappingChange = MappingChange.Created;
 114                 }
 115                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
 116                 LOG.trace("Value: {}", mapping);
 117
 118                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
 119
 120                 mapSystem.addMapping(convertedMapping.getOrigin(), convertedMapping.getMappingRecord().getEid(),
 121                         convertedMapping.getMappingRecord(), false);
 122
 123                 try {
 124                     // The notifications are used for sending SMR.
 125                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
 126                             convertedMapping, mappingChange));
 127                 } catch (InterruptedException e) {
 128                     LOG.warn("Notification publication interrupted!");
 129                 }
 130
 131             } else {
 132                 LOG.warn("Ignoring unhandled modification type {}", mod.getModificationType());
 133             }
 134         }
 135     }
 136
 137     private static Mapping convertToBinaryIfNecessary(Mapping mapping) {
 138         MappingRecord originalRecord = mapping.getMappingRecord();
 139         List<LocatorRecord> originalLocators = originalRecord.getLocatorRecord();
 140
 141         List<LocatorRecord> convertedLocators = null;
 142         if (originalLocators != null) {
 143             // If convertedLocators is non-null, while originalLocators is also non-null, conversion has been made
 144             convertedLocators = convertToBinaryIfNecessary(originalLocators);
 145         }
 146
 147         if (LispAddressUtil.addressNeedsConversionToBinary(originalRecord.getEid().getAddress()) ||
 148                 (originalLocators != null && convertedLocators != null)) {
 149             MappingRecordBuilder mrb = new MappingRecordBuilder(originalRecord);
 150             mrb.setEid(LispAddressUtil.convertToBinary(originalRecord.getEid()));
 151             if (convertedLocators != null) {
 152                 mrb.setLocatorRecord(convertedLocators);
 153             }
 154             return new MappingBuilder(mapping).setMappingRecord(mrb.build()).build();
 155         }
 156         return mapping;
 157     }
 158
 159     private static List<LocatorRecord> convertToBinaryIfNecessary(List<LocatorRecord> originalLocators) {
 160         List<LocatorRecord> convertedLocators = null;
 161         for (LocatorRecord record : originalLocators) {
 162             if (LispAddressUtil.addressNeedsConversionToBinary(record.getRloc().getAddress())) {
 163                 LocatorRecordBuilder lrb = new LocatorRecordBuilder(record);
 164                 lrb.setRloc(LispAddressUtil.convertToBinary(record.getRloc()));
 165                 if (convertedLocators == null) {
 166                     convertedLocators = new ArrayList<LocatorRecord>();
 167                 }
 168                 convertedLocators.add(lrb.build());
 169             }
 170         }
 171         if (convertedLocators != null) {
 172             return convertedLocators;
 173         }
 174         return originalLocators;
 175     }
 176 }