natservice/impl/src/main/java/org/opendaylight/netvirt/natservice/internal/ExternalSubnetChangeListener.java

   1 /*
   2  * Copyright (c) 2018 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 package org.opendaylight.netvirt.natservice.internal;
   9
  10 import javax.annotation.PreDestroy;
  11 import javax.inject.Inject;
  12 import javax.inject.Singleton;
  13 import org.opendaylight.genius.datastoreutils.listeners.DataTreeEventCallbackRegistrar;
  14 import org.opendaylight.genius.mdsalutil.NwConstants;
  15 import org.opendaylight.infrautils.utils.concurrent.Executors;
  16 import org.opendaylight.mdsal.binding.api.DataBroker;
  17 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  18 import org.opendaylight.netvirt.elanmanager.api.IElanService;
  19 import org.opendaylight.netvirt.vpnmanager.api.IVpnManager;
  20 import org.opendaylight.serviceutils.tools.listener.AbstractAsyncDataTreeChangeListener;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.ExternalSubnets;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.natservice.rev160111.external.subnets.Subnets;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.opendaylight.yangtools.yang.common.Uint32;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 @Singleton
  29 public class ExternalSubnetChangeListener extends AbstractAsyncDataTreeChangeListener<Subnets> {
  30     private static final Logger LOG = LoggerFactory.getLogger(ExternalSubnetChangeListener.class);
  31     private final DataBroker dataBroker;
  32     private final SNATDefaultRouteProgrammer snatDefaultRouteProgrammer;
  33
  34     @Inject
  35     public ExternalSubnetChangeListener(final DataBroker dataBroker,
  36                      final SNATDefaultRouteProgrammer snatDefaultRouteProgrammer,
  37                      final IElanService elanService, final IVpnManager vpnManager,
  38                      DataTreeEventCallbackRegistrar dataTreeEventCallbackRegistrar) {
  39         super(dataBroker, LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(ExternalSubnets.class)
  40                 .child(Subnets.class),
  41                 Executors.newListeningSingleThreadExecutor("ExternalSubnetChangeListener", LOG));
  42         this.dataBroker = dataBroker;
  43         this.snatDefaultRouteProgrammer = snatDefaultRouteProgrammer;
  44     }
  45
  46     public void init() {
  47         LOG.info("{} init", getClass().getSimpleName());
  48     }
  49
  50     @Override
  51     @PreDestroy
  52     public void close() {
  53         super.close();
  54         Executors.shutdownAndAwaitTermination(getExecutorService());
  55     }
  56
  57     @Override
  58     public void remove(InstanceIdentifier<Subnets> key, Subnets subnet) {
  59         LOG.info("remove : External Subnet remove mapping method - key:{}. value={}",
  60                 subnet.key(), subnet);
  61         String extSubnetUuid = subnet.getId().getValue();
  62         Uint32 vpnId = NatUtil.getVpnId(dataBroker, extSubnetUuid);
  63         if (vpnId == NatConstants.INVALID_ID) {
  64             LOG.error("Vpn Instance not found for External subnet : {}", extSubnetUuid);
  65             return;
  66         } else {
  67             snatDefaultRouteProgrammer.addOrDelDefaultFibRouteToSNATForSubnet(subnet,
  68                     subnet.getExternalNetworkId().getValue(), NwConstants.DEL_FLOW, vpnId);
  69         }
  70     }
  71
  72     @Override
  73     public void update(InstanceIdentifier<Subnets> key, Subnets orig,
  74             Subnets update) {
  75     }
  76
  77     @Override
  78     public void add(InstanceIdentifier<Subnets> key, Subnets subnet) {
  79     }
  80 }