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.LoggingFutures;
  24 import org.opendaylight.netvirt.elan.l2gw.recovery.impl.L2GatewayServiceRecoveryHandler;
  25 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  26 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  27 import org.opendaylight.serviceutils.srm.RecoverableListener;
  28 import org.opendaylight.serviceutils.srm.ServiceRecoveryRegistry;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  34 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 @Singleton
  39 public class ElanInstanceListener extends AsyncClusteredDataTreeChangeListenerBase<ElanInstance, ElanInstanceListener>
  40         implements RecoverableListener {
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  43
  44     private final DataBroker broker;
  45     private final ManagedNewTransactionRunner txRunner;
  46     private final ElanClusterUtils elanClusterUtils;
  47
  48     @Inject
  49     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils,
  50                                 final L2GatewayServiceRecoveryHandler l2GatewayServiceRecoveryHandler,
  51                                 final ServiceRecoveryRegistry serviceRecoveryRegistry) {
  52         super(ElanInstance.class, ElanInstanceListener.class);
  53         broker = db;
  54         this.txRunner = new ManagedNewTransactionRunnerImpl(db);
  55         this.elanClusterUtils = elanClusterUtils;
  56         serviceRecoveryRegistry.addRecoverableListener(l2GatewayServiceRecoveryHandler.buildServiceRegistryKey(), this);
  57     }
  58
  59     @PostConstruct
  60     public void init() {
  61         registerListener();
  62     }
  63
  64     @Override
  65     public void registerListener() {
  66         LOG.info("Registering ElanInstanceListener");
  67         registerListener(LogicalDatastoreType.CONFIGURATION, broker);
  68     }
  69
  70     public void deregisterListener() {
  71         LOG.info("Deregistering ElanInstanceListener");
  72         super.deregisterListener();
  73     }
  74
  75     @Override
  76     protected void remove(final InstanceIdentifier<ElanInstance> identifier,
  77                           final ElanInstance del) {
  78         elanClusterUtils.runOnlyInOwnerNode(del.getElanInstanceName(), "delete Elan instance",
  79             () -> {
  80                 LOG.info("Elan instance {} deleted from Configuration tree ", del);
  81                 List<L2gatewayConnection> connections =
  82                         L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
  83                                 this.broker, del.getElanInstanceName());
  84                 if (connections.isEmpty()) {
  85                     return Collections.emptyList();
  86                 }
  87                 ListenableFuture<Void> future = txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
  88                     tx -> {
  89                         for (L2gatewayConnection connection : connections) {
  90                             InstanceIdentifier<L2gatewayConnection> iid =
  91                                     InstanceIdentifier.create(Neutron.class).child(
  92                                             L2gatewayConnections.class).child(
  93                                             L2gatewayConnection.class, connection.key());
  94                             tx.delete(iid);
  95                         }
  96                     });
  97                 LoggingFutures.addErrorLogging(future, LOG,
  98                         "Failed to delete associate L2 gateway connection while deleting network");
  99                 return Collections.singletonList(future);
 100             });
 101     }
 102
 103     @Override
 104     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
 105
 106     }
 107
 108     @Override
 109     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
 110     }
 111
 112     @Override
 113     protected ElanInstanceListener getDataTreeChangeListener() {
 114         return ElanInstanceListener.this;
 115     }
 116
 117     @Override
 118     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
 119         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
 120     }
 121
 122 }