bgp/openconfig-impl/src/main/java/org/opendaylight/protocol/bgp/openconfig/impl/moduleconfig/BGPOpenConfigListener.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  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
   9 package org.opendaylight.protocol.bgp.openconfig.impl.moduleconfig;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.Collection;
  13 import java.util.List;
  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.DataTreeChangeListener;
  17 import org.opendaylight.controller.md.sal.binding.api.DataTreeIdentifier;
  18 import org.opendaylight.controller.md.sal.binding.api.DataTreeModification;
  19 import org.opendaylight.controller.md.sal.binding.api.MountPoint;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.protocol.bgp.openconfig.impl.spi.BGPConfigStateStore;
  22 import org.opendaylight.protocol.bgp.openconfig.impl.util.OpenConfigUtil;
  23 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.neighbors.Neighbor;
  24 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.Bgp;
  25 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.Global;
  26 import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.bgp.rev151009.bgp.top.bgp.Neighbors;
  27 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  28 import org.opendaylight.yangtools.yang.binding.DataObject;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public final class BGPOpenConfigListener implements DataTreeChangeListener<Bgp>, AutoCloseable {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(BGPOpenConfigListener.class);
  35
  36     private final ListenerRegistration<BGPOpenConfigListener> registerDataTreeChangeListener;
  37     private final BGPRibImplProvider ribImplProvider;
  38     private final BGPPeerProvider peerProvider;
  39     private final BGPAppPeerProvider appPeerProvider;
  40
  41     public BGPOpenConfigListener(final DataBroker dataBroker, final MountPoint mountPoint, final BGPConfigStateStore configStateHolders) {
  42         final DataBroker mpDataBroker = Preconditions.checkNotNull(mountPoint).getService(DataBroker.class).get();
  43         final BGPConfigModuleProvider configModuleWriter = new BGPConfigModuleProvider();
  44         this.ribImplProvider = new BGPRibImplProvider(configStateHolders, configModuleWriter, mpDataBroker);
  45         this.peerProvider = new BGPPeerProvider(configStateHolders, configModuleWriter, mpDataBroker);
  46         this.appPeerProvider = new BGPAppPeerProvider(configStateHolders, configModuleWriter, mpDataBroker);
  47         this.registerDataTreeChangeListener = dataBroker.registerDataTreeChangeListener(
  48                 new DataTreeIdentifier<>(LogicalDatastoreType.CONFIGURATION, OpenConfigUtil.BGP_IID), this);
  49     }
  50
  51     @Override
  52     public void onDataTreeChanged(final Collection<DataTreeModification<Bgp>> changes) {
  53         for (final DataTreeModification<Bgp> dataTreeModification : changes) {
  54             final DataObjectModification<Bgp> rootNode = dataTreeModification.getRootNode();
  55             for (final DataObjectModification<? extends DataObject> dataObjectModification : rootNode.getModifiedChildren()) {
  56                 switch (dataObjectModification.getModificationType()) {
  57                 case DELETE:
  58                     onOpenConfigRemoved(dataObjectModification.getDataBefore());
  59                     break;
  60                 case SUBTREE_MODIFIED:
  61                 case WRITE:
  62                     onOpenConfigModified(dataObjectModification);
  63                     break;
  64                 default:
  65                     throw new IllegalArgumentException("Unhandled modification type " + rootNode.getModificationType());
  66                 }
  67             }
  68         }
  69     }
  70
  71     @Override
  72     public void close() {
  73         registerDataTreeChangeListener.close();
  74     }
  75
  76     private void onOpenConfigRemoved(final DataObject removedData) {
  77         if (removedData instanceof Global) {
  78             ribImplProvider.onGlobalRemoved((Global) removedData);
  79         } else if (removedData instanceof Neighbors) {
  80             final List<Neighbor> neighbors = ((Neighbors) removedData).getNeighbor();
  81             if( neighbors != null) {
  82                 for (final Neighbor neighbor : neighbors) {
  83                     removeNeighbor(neighbor);
  84                 }
  85             }
  86         } else {
  87             LOG.info("Skipping unhandled removed data: {}", removedData);
  88         }
  89     }
  90
  91     private void onOpenConfigModified(final DataObjectModification<? extends DataObject> dataObjectModification) {
  92         final DataObject modifiedData = dataObjectModification.getDataAfter();
  93         if (modifiedData instanceof Global) {
  94             ribImplProvider.onGlobalModified((Global) modifiedData);
  95         } else if (modifiedData instanceof Neighbors) {
  96             for (final DataObjectModification<? extends DataObject> childModification : dataObjectModification.getModifiedChildren()) {
  97                 switch (childModification.getModificationType()) {
  98                 case DELETE:
  99                     final Neighbor before = (Neighbor) childModification.getDataBefore();
 100                     removeNeighbor(before);
 101                     break;
 102                 case SUBTREE_MODIFIED:
 103                 case WRITE:
 104                     final Neighbor after = (Neighbor) childModification.getDataAfter();
 105                     modifyNeighbor(after);
 106                     break;
 107                 default:
 108                     break;
 109                 }
 110             }
 111         } else {
 112             LOG.info("Skipping unhandled modified data: {}", modifiedData);
 113         }
 114     }
 115
 116     private void removeNeighbor(final Neighbor neighbor) {
 117         if (OpenConfigUtil.isAppNeighbor(neighbor)) {
 118             appPeerProvider.onNeighborRemoved(neighbor);
 119         } else {
 120             peerProvider.onNeighborRemoved(neighbor);
 121         }
 122     }
 123
 124     private void modifyNeighbor(final Neighbor neighbor) {
 125         if (OpenConfigUtil.isAppNeighbor(neighbor)) {
 126             appPeerProvider.onNeighborModified(neighbor);
 127         } else {
 128             peerProvider.onNeighborModified(neighbor);
 129         }
 130     }
 131 }