fibmanager/fibmanager-impl/src/main/java/org/opendaylight/vpnservice/fibmanager/FibNodeCapableListener.java

   1 package org.opendaylight.vpnservice.fibmanager;
   2
   3 import java.math.BigInteger;
   4
   5 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
   6 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
   7 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
   8 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
   9 import org.opendaylight.vpnservice.AbstractDataChangeListener;
  10 import org.opendaylight.vpnservice.mdsalutil.MDSALUtil;
  11 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
  12 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
  15 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  16 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 public class FibNodeCapableListener extends AbstractDataChangeListener<FlowCapableNode> implements AutoCloseable{
  21     private static final Logger LOG = LoggerFactory.getLogger(FibNodeCapableListener.class);
  22     private ListenerRegistration<DataChangeListener> listenerRegistration;
  23     private FibManager fibManager;
  24
  25     public FibNodeCapableListener(final DataBroker dataBroker, FibManager fibManager) {
  26         super(FlowCapableNode.class);
  27         registerListener(dataBroker);
  28         this.fibManager = fibManager;
  29     }
  30
  31     private void registerListener(final DataBroker db) {
  32         try {
  33             listenerRegistration = db.registerDataChangeListener(LogicalDatastoreType.OPERATIONAL,
  34                     getWildCardPath(), FibNodeCapableListener.this, DataChangeScope.ONE);
  35         } catch (final Exception e) {
  36             LOG.error("FibNodeConnectorListener: DataChange listener registration fail!", e);
  37             throw new IllegalStateException("FibNodeConnectorListener: registration Listener failed.", e);
  38         }
  39     }
  40
  41     private InstanceIdentifier<FlowCapableNode> getWildCardPath() {
  42         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
  43     }
  44
  45     @Override
  46     public void close() throws Exception {
  47         if (listenerRegistration != null) {
  48             try {
  49                 listenerRegistration.close();
  50             } catch (final Exception e) {
  51                 LOG.error("Error when cleaning up DataChangeListener.", e);
  52             }
  53             listenerRegistration = null;
  54         }
  55         LOG.info("FibNodeConnectorListener Closed");
  56     }
  57
  58     @Override
  59     protected void add(InstanceIdentifier<FlowCapableNode> identifier, FlowCapableNode node) {
  60         LOG.trace("FlowCapableNode Added: key: " + identifier + ", value=" + node );
  61         NodeKey nodeKey = identifier.firstKeyOf(Node.class, NodeKey.class);
  62         BigInteger dpnId = MDSALUtil.getDpnIdFromNodeName(nodeKey.getId());
  63         fibManager.processNodeAdd(dpnId);
  64     }
  65
  66     @Override
  67     protected void remove(InstanceIdentifier<FlowCapableNode> identifier, FlowCapableNode del) {
  68     }
  69
  70     @Override
  71     protected void update(InstanceIdentifier<FlowCapableNode> identifier, FlowCapableNode original, FlowCapableNode update) {
  72     }
  73 }