dhcpservice/dhcpservice-impl/src/main/java/org/opendaylight/vpnservice/dhcpservice/DhcpInterfaceConfigListener.java

   1 /*
   2  * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. 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.vpnservice.dhcpservice;
  10
  11 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  12 import org.opendaylight.controller.md.sal.binding.api.DataChangeListener;
  13 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  14 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  15 import org.opendaylight.vpnservice.mdsalutil.AbstractDataChangeListener;
  16 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.IpAddress;
  17 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
  18 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.IfTunnel;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.vpnservice.interfacemgr.rev150331.ParentRefs;
  21 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  22 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 public class DhcpInterfaceConfigListener extends AbstractDataChangeListener<Interface> implements AutoCloseable {
  27
  28     private static final Logger logger = LoggerFactory.getLogger(DhcpInterfaceConfigListener.class);
  29     private ListenerRegistration<DataChangeListener> listenerRegistration;
  30     private DataBroker dataBroker;
  31     private DhcpExternalTunnelManager dhcpExternalTunnelManager;
  32
  33     public DhcpInterfaceConfigListener(DataBroker dataBroker, DhcpExternalTunnelManager dhcpExternalTunnelManager) {
  34         super(Interface.class);
  35         this.dataBroker = dataBroker;
  36         this.dhcpExternalTunnelManager = dhcpExternalTunnelManager;
  37         registerListener();
  38     }
  39
  40     private void registerListener() {
  41         try {
  42             listenerRegistration = dataBroker.registerDataChangeListener(LogicalDatastoreType.CONFIGURATION,
  43                     getWildCardPath(), DhcpInterfaceConfigListener.this, DataChangeScope.SUBTREE);
  44         } catch (final Exception e) {
  45             logger.error("DhcpInterfaceEventListener DataChange listener registration fail!", e);
  46             throw new IllegalStateException("DhcpInterfaceEventListener registration Listener failed.", e);
  47         }
  48     }
  49
  50     private InstanceIdentifier<Interface> getWildCardPath() {
  51         return InstanceIdentifier.create(Interfaces.class).child(Interface.class);
  52     }
  53
  54     @Override
  55     public void close() throws Exception {
  56         if (listenerRegistration != null) {
  57             try {
  58                 listenerRegistration.close();
  59             } catch (final Exception e) {
  60                 logger.error("Error when cleaning up DataChangeListener.", e);
  61             }
  62             listenerRegistration = null;
  63         }
  64         logger.info("DhcpInterfaceConfigListener Closed");
  65     }
  66     @Override
  67     protected void remove(InstanceIdentifier<Interface> identifier, Interface del) {
  68         IfTunnel tunnelInterface = del.getAugmentation(IfTunnel.class);
  69         if (tunnelInterface != null && !tunnelInterface.isInternal()) {
  70             IpAddress tunnelIp = tunnelInterface.getTunnelDestination();
  71             ParentRefs interfce = del.getAugmentation(ParentRefs.class);
  72             if (interfce != null) {
  73                 dhcpExternalTunnelManager.handleTunnelStateDown(tunnelIp, interfce.getDatapathNodeIdentifier());
  74             }
  75         }
  76     }
  77
  78     @Override
  79     protected void update(InstanceIdentifier<Interface> identifier, Interface original, Interface update) {
  80         // Handled in update () DhcpInterfaceEventListener
  81     }
  82
  83     @Override
  84     protected void add(InstanceIdentifier<Interface> identifier, Interface add) {
  85         // Handled in add() DhcpInterfaceEventListener
  86     }
  87 }