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.common.api.data.AsyncDataChangeEvent;
  15 import org.opendaylight.lispflowmapping.implementation.LispMappingService;
  16 import org.opendaylight.lispflowmapping.implementation.util.MapServerMapResolverUtil;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.control.plane.rev150314.MapRegister;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mapping.database.rev150314.MappingDatabase;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mapping.database.rev150314.MappingOrigin;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mapping.database.rev150314.db.instance.Mapping;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.lfm.mapping.database.rev150314.mapping.database.InstanceId;
  22 import org.opendaylight.yangtools.yang.binding.DataObject;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * DataListener for all Mapping modification events.
  29  *
  30  * @author Lorand Jakab
  31  *
  32  */
  33 public class MappingDataListener extends AbstractDataListener {
  34     private static final Logger LOG = LoggerFactory.getLogger(MappingDataListener.class);
  35     private LispMappingService msmr;
  36
  37     public MappingDataListener(DataBroker broker, LispMappingService msmr) {
  38         setBroker(broker);
  39         setMsmr(msmr);
  40         setPath(InstanceIdentifier.create(MappingDatabase.class).child(InstanceId.class)
  41                 .child(Mapping.class));
  42         LOG.trace("Registering Mapping listener.");
  43         registerDataChangeListener();
  44     }
  45
  46     @Override
  47     public void onDataChanged(
  48             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  49
  50      // Process newly created mappings
  51         Map<InstanceIdentifier<?>, DataObject> createdData = change.getCreatedData();
  52         for (Map.Entry<InstanceIdentifier<?>, DataObject> entry : createdData.entrySet()) {
  53             if (entry.getValue() instanceof Mapping) {
  54                 Mapping mapping = (Mapping)entry.getValue();
  55
  56                 LOG.trace("Received created data");
  57                 LOG.trace("Key: {}", entry.getKey());
  58                 LOG.trace("Value: {}", mapping);
  59
  60                 if (mapping.getOrigin() != MappingOrigin.Southbound) {
  61                     MapRegister register = MapServerMapResolverUtil.getMapRegister(mapping);
  62                     msmr.handleMapRegister(register, false);
  63                 } else {
  64                     LOG.trace("Mapping is coming from the southbound plugin, already handled");
  65                 }
  66             }
  67         }
  68
  69         // Process updated mappings
  70         Map<InstanceIdentifier<?>, DataObject> updatedData = change.getUpdatedData();
  71         for (Map.Entry<InstanceIdentifier<?>, DataObject> entry : updatedData.entrySet()) {
  72             if (entry.getValue() instanceof Mapping) {
  73                 Mapping mapping = (Mapping)entry.getValue();
  74
  75                 LOG.trace("Received changed data");
  76                 LOG.trace("Key: {}", entry.getKey());
  77                 LOG.trace("Value: {}", entry.getValue());
  78
  79                 if (mapping.getOrigin() != MappingOrigin.Southbound) {
  80                     MapRegister register = MapServerMapResolverUtil.getMapRegister(mapping);
  81                     msmr.handleMapRegister(register, false);
  82                 } else {
  83                     LOG.trace("Mapping is coming from the southbound plugin, already handled");
  84                 }
  85             }
  86         }
  87
  88         // Process deleted mappings
  89         Set<InstanceIdentifier<?>> removedData = change.getRemovedPaths();
  90         for (InstanceIdentifier<?> entry : removedData) {
  91             DataObject dataObject = change.getOriginalData().get(entry);
  92             if (dataObject instanceof Mapping) {
  93                 Mapping mapping = (Mapping)dataObject;
  94
  95                 LOG.trace("Received deleted data");
  96                 LOG.trace("Key: {}", entry);
  97                 LOG.trace("Value: {}", dataObject);
  98
  99                 msmr.removeMapping(mapping.getLispAddressContainer(), mapping.getMaskLength());
 100             }
 101         }
 102     }
 103
 104     void setMsmr(LispMappingService msmr) {
 105         this.msmr = msmr;
 106     }
 107 }