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.mdsal.binding.util.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.PreDestroy;
  16 import javax.inject.Inject;
  17 import javax.inject.Singleton;
  18 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  19 import org.opendaylight.infrautils.utils.concurrent.Executors;
  20 import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
  21 import org.opendaylight.mdsal.binding.api.DataBroker;
  22 import org.opendaylight.mdsal.binding.util.ManagedNewTransactionRunner;
  23 import org.opendaylight.mdsal.binding.util.ManagedNewTransactionRunnerImpl;
  24 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  25 import org.opendaylight.netvirt.elan.l2gw.recovery.impl.L2GatewayServiceRecoveryHandler;
  26 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  27 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  28 import org.opendaylight.serviceutils.srm.RecoverableListener;
  29 import org.opendaylight.serviceutils.srm.ServiceRecoveryRegistry;
  30 import org.opendaylight.serviceutils.tools.listener.AbstractClusteredAsyncDataTreeChangeListener;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanForwardingTables;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.forwarding.tables.MacTable;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.forwarding.tables.MacTableKey;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  37 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  38 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  39 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 @Singleton
  44 public class ElanInstanceListener extends AbstractClusteredAsyncDataTreeChangeListener<ElanInstance>
  45         implements RecoverableListener {
  46
  47     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  48
  49     private final DataBroker broker;
  50     private final ManagedNewTransactionRunner txRunner;
  51     private final ElanClusterUtils elanClusterUtils;
  52
  53     @Inject
  54     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils,
  55                                 final L2GatewayServiceRecoveryHandler l2GatewayServiceRecoveryHandler,
  56                                 final ServiceRecoveryRegistry serviceRecoveryRegistry) {
  57         super(db, LogicalDatastoreType.CONFIGURATION, InstanceIdentifier.create(ElanInstances.class)
  58                 .child(ElanInstance.class),
  59                 Executors.newListeningSingleThreadExecutor("ElanInstanceListener", LOG));
  60         broker = db;
  61         this.txRunner = new ManagedNewTransactionRunnerImpl(db);
  62         this.elanClusterUtils = elanClusterUtils;
  63         serviceRecoveryRegistry.addRecoverableListener(l2GatewayServiceRecoveryHandler.buildServiceRegistryKey(), this);
  64         ResourceBatchingManager.getInstance().registerDefaultBatchHandlers(db);
  65     }
  66
  67     public void init() {
  68         registerListener();
  69     }
  70
  71     @Override
  72     @PreDestroy
  73     public void close() {
  74         super.close();
  75         Executors.shutdownAndAwaitTermination(getExecutorService());
  76     }
  77
  78     @Override
  79     public void registerListener() {
  80         super.register();
  81         LOG.info("Registering ElanInstanceListener");
  82     }
  83
  84     @Override
  85
  86
  87     public void deregisterListener() {
  88         super.close();
  89         LOG.info("Deregistering ElanInstanceListener");
  90     }
  91
  92     @Override
  93     public void remove(final InstanceIdentifier<ElanInstance> identifier,
  94                           final ElanInstance del) {
  95         elanClusterUtils.runOnlyInOwnerNode(del.getElanInstanceName(), "delete Elan instance",
  96             () -> {
  97                 LOG.info("Elan instance {} deleted from Configuration tree ", del.getElanInstanceName());
  98                 List<L2gatewayConnection> connections =
  99                         L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
 100                                 this.broker, del.getElanInstanceName());
 101                 if (connections.isEmpty()) {
 102                     return Collections.emptyList();
 103                 }
 104                 ListenableFuture<?> future = txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION,
 105                     tx -> {
 106                         for (L2gatewayConnection connection : connections) {
 107                             InstanceIdentifier<L2gatewayConnection> iid =
 108                                     InstanceIdentifier.create(Neutron.class).child(
 109                                             L2gatewayConnections.class).child(
 110                                             L2gatewayConnection.class, connection.key());
 111                             tx.delete(iid);
 112                         }
 113                     });
 114                 LoggingFutures.addErrorLogging(future, LOG,
 115                         "Failed to delete associate L2 gateway connection while deleting network");
 116                 txRunner.callWithNewReadWriteTransactionAndSubmit(CONFIGURATION, tx -> {
 117                     InstanceIdentifier<MacTable> macTableIid = getElanMacEntryPath(del.getElanInstanceName());
 118                     tx.delete(macTableIid);
 119                 });
 120                 return Collections.singletonList(future);
 121             });
 122     }
 123
 124     public static InstanceIdentifier<MacTable> getElanMacEntryPath(String elanName) {
 125         return InstanceIdentifier.builder(ElanForwardingTables.class).child(MacTable.class,
 126             new MacTableKey(elanName)).build();
 127     }
 128
 129     @Override
 130     public void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
 131
 132     }
 133
 134     @Override
 135     public void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
 136     }
 137 }