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.Map;
  11 import java.util.Set;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.NotificationPublishService;
  15 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  16 import org.opendaylight.lispflowmapping.implementation.util.MSNotificationInputUtil;
  17 import org.opendaylight.lispflowmapping.interfaces.mapcache.IMappingSystem;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingChange;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingDatabase;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.MappingOrigin;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.db.instance.Mapping;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mappingservice.rev150906.mapping.database.VirtualNetworkIdentifier;
  23 import org.opendaylight.yangtools.yang.binding.DataObject;
  24 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * DataListener for all Mapping modification events.
  30  *
  31  * @author Lorand Jakab
  32  * @author Florin Coras
  33  *
  34  */
  35 public class MappingDataListener extends AbstractDataListener {
  36     private static final Logger LOG = LoggerFactory.getLogger(MappingDataListener.class);
  37     private IMappingSystem mapSystem;
  38     private NotificationPublishService notificationPublishService;
  39
  40     public MappingDataListener(DataBroker broker, IMappingSystem msmr, NotificationPublishService nps) {
  41         setBroker(broker);
  42         setMappingSystem(msmr);
  43         setNotificationProviderService(nps);
  44         setPath(InstanceIdentifier.create(MappingDatabase.class).child(VirtualNetworkIdentifier.class)
  45                 .child(Mapping.class));
  46         LOG.trace("Registering Mapping listener.");
  47         registerDataChangeListener();
  48     }
  49
  50     public void setNotificationProviderService(NotificationPublishService nps) {
  51         this.notificationPublishService = nps;
  52     }
  53
  54     @Override
  55     public void onDataChanged(
  56             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  57
  58      // Process newly created mappings
  59         Map<InstanceIdentifier<?>, DataObject> createdData = change.getCreatedData();
  60         for (Map.Entry<InstanceIdentifier<?>, DataObject> entry : createdData.entrySet()) {
  61             if (entry.getValue() instanceof Mapping) {
  62                 Mapping mapping = (Mapping)entry.getValue();
  63
  64                 LOG.trace("Received created data");
  65                 LOG.trace("Key: {}", entry.getKey());
  66                 LOG.trace("Value: {}", mapping);
  67
  68                 mapSystem.addMapping(mapping.getOrigin(), mapping.getMappingRecord().getEid(),
  69                         mapping.getMappingRecord());
  70             }
  71         }
  72
  73         // Process updated mappings
  74         Map<InstanceIdentifier<?>, DataObject> updatedData = change.getUpdatedData();
  75         for (Map.Entry<InstanceIdentifier<?>, DataObject> entry : updatedData.entrySet()) {
  76             if (entry.getValue() instanceof Mapping) {
  77                 Mapping mapping = (Mapping)entry.getValue();
  78
  79                 LOG.trace("Received changed data");
  80                 LOG.trace("Key: {}", entry.getKey());
  81                 LOG.trace("Value: {}", entry.getValue());
  82
  83                 mapSystem.addMapping(mapping.getOrigin(), mapping.getMappingRecord().getEid(),
  84                         mapping.getMappingRecord());
  85
  86                 if (mapping.getOrigin() == MappingOrigin.Northbound) {
  87                     // Only publish notifications for mapping changes caused by Northbound, since Southbound has a
  88                     // dedicated code path for detecting mapping updates. The notifications are used for sending SMR.
  89                     try {
  90                         notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(mapping,
  91                                 MappingChange.Updated));
  92                     } catch (InterruptedException e) {
  93                         LOG.warn("Notification publication interrupted!");
  94                     }
  95                 }
  96             }
  97         }
  98
  99         // Process deleted mappings
 100         Set<InstanceIdentifier<?>> removedData = change.getRemovedPaths();
 101         for (InstanceIdentifier<?> entry : removedData) {
 102             DataObject dataObject = change.getOriginalData().get(entry);
 103             if (dataObject instanceof Mapping) {
 104                 Mapping mapping = (Mapping)dataObject;
 105
 106                 LOG.trace("Received deleted data");
 107                 LOG.trace("Key: {}", entry);
 108                 LOG.trace("Value: {}", dataObject);
 109
 110                 mapSystem.removeMapping(mapping.getOrigin(), mapping.getMappingRecord().getEid());
 111                 try {
 112                     notificationPublishService.putNotification(MSNotificationInputUtil.toMappingChanged(mapping, MappingChange.Removed));
 113                 } catch (InterruptedException e) {
 114                     LOG.warn("Notification publication interrupted!");
 115                 }
 116             }
 117         }
 118     }
 119
 120     void setMappingSystem(IMappingSystem msmr) {
 121         this.mapSystem = msmr;
 122     }
 123 }