renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/node/OfOverlayNodeListener.java

   1 /*
   2  * Copyright (c) 2014 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.groupbasedpolicy.renderer.ofoverlay.node;
  10
  11 import static com.google.common.base.Preconditions.checkNotNull;
  12
  13 import java.util.Collection;
  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.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.groupbasedpolicy.ofoverlay.rev140528.OfOverlayNodeConfig;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  25 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 public class OfOverlayNodeListener implements DataTreeChangeListener<OfOverlayNodeConfig>, AutoCloseable {
  31
  32     private static final Logger LOG = LoggerFactory.getLogger(OfOverlayNodeListener.class);
  33
  34     private final static InstanceIdentifier<OfOverlayNodeConfig> ofOverlayNodeIid = InstanceIdentifier.builder(
  35             Nodes.class)
  36         .child(Node.class)
  37         .augmentation(OfOverlayNodeConfig.class)
  38         .build();
  39     private final SwitchManager switchManager;
  40     private final ListenerRegistration<?> listenerRegistration;
  41
  42     public OfOverlayNodeListener(DataBroker dataProvider, SwitchManager switchManager) {
  43         this.switchManager = checkNotNull(switchManager);
  44         listenerRegistration = checkNotNull(dataProvider).registerDataTreeChangeListener(new DataTreeIdentifier<>(
  45                 LogicalDatastoreType.CONFIGURATION, ofOverlayNodeIid), this);
  46     }
  47
  48     @Override
  49     public void onDataTreeChanged(Collection<DataTreeModification<OfOverlayNodeConfig>> changes) {
  50         for (DataTreeModification<OfOverlayNodeConfig> change: changes) {
  51             DataObjectModification<OfOverlayNodeConfig> rootNode = change.getRootNode();
  52             NodeId nodeId = change.getRootPath().getRootIdentifier().firstKeyOf(Node.class, NodeKey.class).getId();
  53             switch (rootNode.getModificationType()) {
  54                 case SUBTREE_MODIFIED:
  55                 case WRITE:
  56                     OfOverlayNodeConfig nodeConfig = rootNode.getDataAfter();
  57                     LOG.trace("OfOverlayNodeConfig updated. NodeId: {} OfOverlayNodeConfig: {}", nodeId.getValue(),
  58                             nodeConfig);
  59                     switchManager.updateSwitchConfig(nodeId, nodeConfig);
  60                     break;
  61                 case DELETE:
  62                     LOG.trace("OfOverlayNodeConfig removed. NodeId: {}", nodeId.getValue());
  63                     switchManager.updateSwitchConfig(nodeId, null);
  64                     break;
  65                 default:
  66                     break;
  67             }
  68         }
  69     }
  70
  71     @Override
  72     public void close() throws Exception {
  73         if (listenerRegistration != null) {
  74             listenerRegistration.close();
  75         }
  76     }
  77 }