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.util.LispAddressUtil;
  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.MappingChange;
  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
  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(Collection<DataTreeModification<Mapping>> changes) {
  67         for (DataTreeModification<Mapping> change : changes) {
  68             final DataObjectModification<Mapping> mod = change.getRootNode();
  69
  70             if (ModificationType.DELETE == mod.getModificationType()) {
  71                 // Process deleted mappings
  72
  73                 final Mapping mapping = mod.getDataBefore();
  74
  75                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
  76                 // before being persisted.
  77                 if (mapping.getOrigin() == MappingOrigin.Southbound) {
  78                     continue;
  79                 }
  80
  81                 LOG.trace("Received deleted data");
  82                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
  83                 LOG.trace("Value: {}", mapping);
  84
  85                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
  86
  87                 mapSystem.removeMapping(convertedMapping.getOrigin(), convertedMapping.getMappingRecord().getEid());
  88                 try {
  89                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
  90                             convertedMapping, MappingChange.Removed));
  91                 } catch (InterruptedException e) {
  92                     LOG.warn("Notification publication interrupted!");
  93                 }
  94
  95             } else if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType() || ModificationType.WRITE == mod
  96                     .getModificationType()) {
  97                 final Mapping mapping = mod.getDataAfter();
  98
  99                 // Only treat mapping changes caused by Northbound, since Southbound changes are already handled
 100                 // before being persisted. XXX separate NB and SB to avoid ignoring SB notifications
 101                 if (mapping.getOrigin() == MappingOrigin.Southbound) {
 102                     continue;
 103                 }
 104
 105                 MappingChange mappingChange;
 106
 107                 if (ModificationType.SUBTREE_MODIFIED == mod.getModificationType()) {
 108                     LOG.trace("Received update data");
 109                     mappingChange = MappingChange.Updated;
 110                 } else {
 111                     LOG.trace("Received write data");
 112                     mappingChange = MappingChange.Created;
 113                 }
 114                 LOG.trace("Key: {}", change.getRootPath().getRootIdentifier());
 115                 LOG.trace("Value: {}", mapping);
 116
 117                 final Mapping convertedMapping = convertToBinaryIfNecessary(mapping);
 118
 119                 mapSystem.addMapping(convertedMapping.getOrigin(), convertedMapping.getMappingRecord().getEid(),
 120                         convertedMapping.getMappingRecord(), false);
 121
 122                 try {
 123                     // The notifications are used for sending SMR.
 124                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(
 125                             convertedMapping, mappingChange));
 126                 } catch (InterruptedException e) {
 127                     LOG.warn("Notification publication interrupted!");
 128                 }
 129
 130             } else {
 131                 LOG.warn("Ignoring unhandled modification type {}", mod.getModificationType());
 132             }
 133         }
 134     }
 135
 136     private static Mapping convertToBinaryIfNecessary(Mapping mapping) {
 137         MappingRecord originalRecord = mapping.getMappingRecord();
 138         List<LocatorRecord> originalLocators = originalRecord.getLocatorRecord();
 139
 140         List<LocatorRecord> convertedLocators = null;
 141         if (originalLocators != null) {
 142             // If convertedLocators is non-null, while originalLocators is also non-null, conversion has been made
 143             convertedLocators = convertToBinaryIfNecessary(originalLocators);
 144         }
 145
 146         if (LispAddressUtil.addressNeedsConversionToBinary(originalRecord.getEid().getAddress())
 147                 || (originalLocators != null && convertedLocators != null)) {
 148             MappingRecordBuilder mrb = new MappingRecordBuilder(originalRecord);
 149             mrb.setEid(LispAddressUtil.convertToBinary(originalRecord.getEid()));
 150             if (convertedLocators != null) {
 151                 mrb.setLocatorRecord(convertedLocators);
 152             }
 153             return new MappingBuilder(mapping).setMappingRecord(mrb.build()).build();
 154         }
 155         return mapping;
 156     }
 157
 158     private static List<LocatorRecord> convertToBinaryIfNecessary(List<LocatorRecord> originalLocators) {
 159         List<LocatorRecord> convertedLocators = null;
 160         for (LocatorRecord record : originalLocators) {
 161             if (LispAddressUtil.addressNeedsConversionToBinary(record.getRloc().getAddress())) {
 162                 LocatorRecordBuilder lrb = new LocatorRecordBuilder(record);
 163                 lrb.setRloc(LispAddressUtil.convertToBinary(record.getRloc()));
 164                 if (convertedLocators == null) {
 165                     convertedLocators = new ArrayList<LocatorRecord>();
 166                 }
 167                 convertedLocators.add(lrb.build());
 168             }
 169         }
 170         if (convertedLocators != null) {
 171             return convertedLocators;
 172         }
 173         return originalLocators;
 174     }
 175 }