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 static org.opendaylight.genius.infra.Datastore.CONFIGURATION;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.Collections;
  14 import java.util.List;
  15 import javax.annotation.PostConstruct;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  21 import org.opendaylight.genius.infra.ManagedNewTransactionRunner;
  22 import org.opendaylight.genius.infra.ManagedNewTransactionRunnerImpl;
  23 import org.opendaylight.infrautils.utils.concurrent.ListenableFutures;
  24 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  25 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  31 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 @Singleton
  36 public class ElanInstanceListener extends AsyncClusteredDataTreeChangeListenerBase<ElanInstance, ElanInstanceListener> {
  37
  38     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  39
  40     private final DataBroker broker;
  41     private final ManagedNewTransactionRunner txRunner;
  42     private final ElanClusterUtils elanClusterUtils;
  43
  44     @Inject
  45     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils) {
  46         super(ElanInstance.class, ElanInstanceListener.class);
  47         broker = db;
  48         this.txRunner = new ManagedNewTransactionRunnerImpl(db);
  49         this.elanClusterUtils = elanClusterUtils;
  50     }
  51
  52     @PostConstruct
  53     public void init() {
  54         registerListener(LogicalDatastoreType.CONFIGURATION, broker);
  55     }
  56
  57     @Override
  58     protected void remove(final InstanceIdentifier<ElanInstance> identifier,
  59                           final ElanInstance del) {
  60         elanClusterUtils.runOnlyInOwnerNode(del.getElanInstanceName(), "delete Elan instance",
  61             () -> {
  62                 LOG.info("Elan instance {} deleted from Configuration tree ", del);
  63                 List<L2gatewayConnection> connections =
  64                         L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
  65                                 this.broker, del.getElanInstanceName());
  66                 if (connections.isEmpty()) {
  67                     return Collections.emptyList();
  68                 }
  69                 ListenableFuture<Void> future = txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
  70                     tx -> {
  71                         for (L2gatewayConnection connection : connections) {
  72                             InstanceIdentifier<L2gatewayConnection> iid =
  73                                     InstanceIdentifier.create(Neutron.class).child(
  74                                             L2gatewayConnections.class).child(
  75                                             L2gatewayConnection.class, connection.key());
  76                             tx.delete(iid);
  77                         }
  78                     });
  79                 ListenableFutures.addErrorLogging(future, LOG,
  80                         "Failed to delete associate L2 gateway connection while deleting network");
  81                 return Collections.singletonList(future);
  82             });
  83     }
  84
  85     @Override
  86     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
  87
  88     }
  89
  90     @Override
  91     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
  92     }
  93
  94     @Override
  95     protected ElanInstanceListener getDataTreeChangeListener() {
  96         return ElanInstanceListener.this;
  97     }
  98
  99     @Override
 100     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
 101         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
 102     }
 103
 104 }