renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/node/FlowCapableNodeListener.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.Map.Entry;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  17 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  18 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  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.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class FlowCapableNodeListener implements DataChangeListener, AutoCloseable {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(FlowCapableNodeListener.class);
  34
  35     private final static InstanceIdentifier<FlowCapableNode> fcNodeIid = InstanceIdentifier.builder(Nodes.class)
  36         .child(Node.class)
  37         .augmentation(FlowCapableNode.class)
  38         .build();
  39     private final SwitchManager switchManager;
  40     private final ListenerRegistration<DataChangeListener> listenerRegistration;
  41
  42     public FlowCapableNodeListener(DataBroker dataProvider, SwitchManager switchManager) {
  43         this.switchManager = checkNotNull(switchManager);
  44         listenerRegistration = checkNotNull(dataProvider).registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  45                 fcNodeIid, this, DataChangeScope.BASE);
  46     }
  47
  48     @Override
  49     public void onDataChanged(AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> change) {
  50         for (Entry<InstanceIdentifier<?>, DataObject> fcNodeEntry : change.getCreatedData().entrySet()) {
  51             if (FlowCapableNode.class.equals(fcNodeEntry.getKey().getTargetType())) {
  52                 NodeId nodeId = fcNodeEntry.getKey().firstKeyOf(Node.class, NodeKey.class).getId();
  53                 FlowCapableNode fcNode = (FlowCapableNode) fcNodeEntry.getValue();
  54                 LOG.trace("FlowCapableNode created. NodeId: {} FlowCapableNode: {}", nodeId.getValue(), fcNode);
  55                 switchManager.updateSwitch(nodeId, fcNode);
  56             }
  57         }
  58         for (Entry<InstanceIdentifier<?>, DataObject> fcNodeEntry : change.getUpdatedData().entrySet()) {
  59             if (FlowCapableNode.class.equals(fcNodeEntry.getKey().getTargetType())) {
  60                 NodeId nodeId = fcNodeEntry.getKey().firstKeyOf(Node.class, NodeKey.class).getId();
  61                 FlowCapableNode fcNode = (FlowCapableNode) fcNodeEntry.getValue();
  62                 LOG.trace("FlowCapableNode updated. NodeId: {} FlowCapableNode: {}", nodeId.getValue(), fcNode);
  63                 switchManager.updateSwitch(nodeId, fcNode);
  64             }
  65         }
  66         for (InstanceIdentifier<?> removedFcNodeIid : change.getRemovedPaths()) {
  67             if (FlowCapableNode.class.equals(removedFcNodeIid.getTargetType())) {
  68                 NodeId nodeId = removedFcNodeIid.firstKeyOf(Node.class, NodeKey.class).getId();
  69                 LOG.trace("FlowCapableNode removed. NodeId: {}", nodeId.getValue());
  70                 switchManager.updateSwitch(nodeId, null);
  71             }
  72         }
  73     }
  74
  75     @Override
  76     public void close() throws Exception {
  77         if (listenerRegistration != null) {
  78             listenerRegistration.close();
  79         }
  80     }
  81
  82 }