git.opendaylight Code Review - netvirt.git/blob

   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.ArrayList;
  11 import java.util.List;
  12 import java.util.Map;
  13 import java.util.concurrent.ConcurrentHashMap;
  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.clustering.EntityOwnershipService;
  17 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  18 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  19 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  20 import org.opendaylight.netvirt.elan.l2gw.utils.L2GatewayConnectionUtils;
  21 import org.opendaylight.netvirt.elan.utils.ElanClusterUtils;
  22 import org.opendaylight.netvirt.elan.utils.ElanUtils;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.ElanInstances;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.elan.rev150602.elan.instances.ElanInstance;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.L2gatewayConnections;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.l2gateways.rev150712.l2gateway.connections.attributes.l2gatewayconnections.L2gatewayConnection;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.neutron.rev150712.Neutron;
  28 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public class ElanInstanceListener extends AsyncClusteredDataTreeChangeListenerBase<ElanInstance,
  33         ElanInstanceListener> implements AutoCloseable {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  36
  37     private final DataBroker broker;
  38     private final L2GatewayConnectionUtils l2GatewayConnectionUtils;
  39     private final EntityOwnershipService entityOwnershipService;
  40     private static final Map<String, List<Runnable>> WAITING_JOB_LIST = new ConcurrentHashMap<>();
  41
  42     public ElanInstanceListener(final DataBroker db, EntityOwnershipService entityOwnershipService,
  43                                 final ElanUtils elanUtils) {
  44         super(ElanInstance.class, ElanInstanceListener.class);
  45         broker = db;
  46         this.entityOwnershipService = entityOwnershipService;
  47         this.l2GatewayConnectionUtils = elanUtils.getL2GatewayConnectionUtils();
  48         registerListener(LogicalDatastoreType.CONFIGURATION, db);
  49     }
  50
  51     public void init() {
  52     }
  53
  54     public void close() {
  55     }
  56
  57     @Override
  58     protected void remove(final InstanceIdentifier<ElanInstance> identifier,
  59                           final ElanInstance del) {
  60         ElanClusterUtils.runOnlyInLeaderNode(entityOwnershipService, del.getElanInstanceName(), () -> {
  61             LOG.info("Elan instance {} deleted from Configuration tree ", del);
  62             List<L2gatewayConnection> connections =
  63                     L2GatewayConnectionUtils.getL2GwConnectionsByElanName(
  64                             this.broker, del.getElanInstanceName());
  65             if (connections == null || connections.isEmpty()) {
  66                 return null;
  67             }
  68             try {
  69                 ReadWriteTransaction tx = this.broker.newReadWriteTransaction();
  70                 for (L2gatewayConnection connection : connections) {
  71                     InstanceIdentifier<L2gatewayConnection> iid = InstanceIdentifier.create(Neutron.class)
  72                             .child(L2gatewayConnections.class).child(L2gatewayConnection.class, connection.getKey());
  73                     tx.delete(LogicalDatastoreType.CONFIGURATION, iid);
  74                 }
  75                 tx.submit().checkedGet();
  76             } catch (TransactionCommitFailedException e) {
  77                 LOG.error("Failed to delete associated l2gwconnection while deleting network", e);
  78             }
  79             return null;
  80         });
  81     }
  82
  83     @Override
  84     protected void update(InstanceIdentifier<ElanInstance> identifier, ElanInstance original, ElanInstance update) {
  85
  86     }
  87
  88     @Override
  89     protected void add(InstanceIdentifier<ElanInstance> identifier, ElanInstance add) {
  90         List<Runnable> runnables = WAITING_JOB_LIST.get(add.getElanInstanceName());
  91         if (runnables != null) {
  92             runnables.forEach(Runnable::run);
  93         }
  94     }
  95
  96     public static void runJobAfterElanIsAvailable(String elanName, Runnable runnable) {
  97         WAITING_JOB_LIST.computeIfAbsent(elanName, (name) -> new ArrayList<>());
  98         WAITING_JOB_LIST.get(elanName).add(runnable);
  99     }
 100
 101     @Override
 102     protected ElanInstanceListener getDataTreeChangeListener() {
 103         return ElanInstanceListener.this;
 104     }
 105
 106     @Override
 107     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
 108         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
 109     }
 110
 111 }