elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/ElanInstanceListener.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 package org.opendaylight.netvirt.elan.l2gw.listeners;
   9
  10 import java.util.List;
  11 import javax.annotation.PostConstruct;
  12 import javax.inject.Inject;
  13 import javax.inject.Singleton;
  14 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  15 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  18 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  19 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  20 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  26 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 @Singleton
  31 public class ElanInstanceListener extends AsyncClusteredDataTreeChangeListenerBase<ElanInstance, ElanInstanceListener> {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  34
  35     private final DataBroker broker;
  36     private final ElanClusterUtils elanClusterUtils;
  37
  38     @Inject
  39     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils) {
  40         super(ElanInstance.class, ElanInstanceListener.class);
  41         broker = db;
  42         this.elanClusterUtils = elanClusterUtils;
  43     }
  44
  45     @PostConstruct
  46     public void init() {
  47         registerListener(LogicalDatastoreType.CONFIGURATION, broker);
  48     }
  49
  50     @Override
  51     protected void remove(final InstanceIdentifier<ElanInstance> identifier,
  52                           final ElanInstance del) {
  53         elanClusterUtils.runOnlyInOwnerNode(del.getElanInstanceName(), "delete Elan instance",
  54             () -> {
  55                 LOG.info("Elan instance {} deleted from Configuration tree ", del);
  56                 List<L2gatewayConnection> connections =
  57                         L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
  58                                 this.broker, del.getElanInstanceName());
  59                 if (connections == null || connections.isEmpty()) {
  60                     return null;
  61                 }
  62                 try {
  63                     ReadWriteTransaction tx = this.broker.newReadWriteTransaction();
  64                     for (L2gatewayConnection connection : connections) {
  65                         InstanceIdentifier<L2gatewayConnection> iid = InstanceIdentifier.create(Neutron.class)
  66                             .child(L2gatewayConnections.class).child(L2gatewayConnection.class, connection.getKey());
  67                         tx.delete(LogicalDatastoreType.CONFIGURATION, iid);
  68                     }
  69                     tx.submit().checkedGet();
  70                 } catch (TransactionCommitFailedException e) {
  71                     LOG.error("Failed to delete associated l2gwconnection while deleting network", e);
  72                 }
  73                 return null;
  74             });
  75     }
  76
  77     @Override
  78     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
  79
  80     }
  81
  82     @Override
  83     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
  84     }
  85
  86     @Override
  87     protected ElanInstanceListener getDataTreeChangeListener() {
  88         return ElanInstanceListener.this;
  89     }
  90
  91     @Override
  92     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
  93         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
  94     }
  95
  96 }