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 com.google.common.util.concurrent.ListenableFuture;
  11 import java.util.Collections;
  12 import java.util.List;
  13 import javax.annotation.PostConstruct;
  14 import javax.inject.Inject;
  15 import javax.inject.Singleton;
  16 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  19 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  20 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  21 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  22 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  23 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  29 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 @Singleton
  34 public class ElanInstanceListener extends AsyncClusteredDataTreeChangeListenerBase<ElanInstance, ElanInstanceListener> {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  37
  38     private final DataBroker broker;
  39     private final ManagedNewTransactionRunner txRunner;
  40     private final ElanClusterUtils elanClusterUtils;
  41
  42     @Inject
  43     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils) {
  44         super(ElanInstance.class, ElanInstanceListener.class);
  45         broker = db;
  46         this.txRunner = new ManagedNewTransactionRunnerImpl(db);
  47         this.elanClusterUtils = elanClusterUtils;
  48     }
  49
  50     @PostConstruct
  51     public void init() {
  52         registerListener(LogicalDatastoreType.CONFIGURATION, broker);
  53     }
  54
  55     @Override
  56     protected void remove(final InstanceIdentifier<ElanInstance> identifier,
  57                           final ElanInstance del) {
  58         elanClusterUtils.runOnlyInOwnerNode(del.getElanInstanceName(), "delete Elan instance",
  59             () -> {
  60                 LOG.info("Elan instance {} deleted from Configuration tree ", del);
  61                 List<L2gatewayConnection> connections =
  62                         L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
  63                                 this.broker, del.getElanInstanceName());
  64                 if (connections.isEmpty()) {
  65                     return Collections.emptyList();
  66                 }
  67                 ListenableFuture<Void> future = txRunner.callWithNewReadWriteTransactionAndSubmit(tx -> {
  68                     for (L2gatewayConnection connection : connections) {
  69                         InstanceIdentifier<L2gatewayConnection> iid =
  70                                 InstanceIdentifier.create(Neutron.class).child(
  71                                         L2gatewayConnections.class).child(
  72                                         L2gatewayConnection.class, connection.key());
  73                         tx.delete(LogicalDatastoreType.CONFIGURATION, iid);
  74                     }
  75                 });
  76                 ListenableFutures.addErrorLogging(future, LOG,
  77                         "Failed to delete associate L2 gateway connection while deleting network");
  78                 return Collections.singletonList(future);
  79             });
  80     }
  81
  82     @Override
  83     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
  84
  85     }
  86
  87     @Override
  88     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
  89     }
  90
  91     @Override
  92     protected ElanInstanceListener getDataTreeChangeListener() {
  93         return ElanInstanceListener.this;
  94     }
  95
  96     @Override
  97     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
  98         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
  99     }
 100
 101 }