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 java.util.ArrayList;
  11 import java.util.List;
  12 import java.util.Map;
  13 import java.util.concurrent.ConcurrentHashMap;
  14 import javax.annotation.PostConstruct;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  18 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  20 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  21 import org.opendaylight.genius.datastoreutils.AsyncClusteredDataTreeChangeListenerBase;
  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,
  35         ElanInstanceListener> {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(ElanInstanceListener.class);
  38
  39     private final DataBroker broker;
  40     private final ElanClusterUtils elanClusterUtils;
  41     private static final Map<String, List<Runnable>> WAITING_JOB_LIST = new ConcurrentHashMap<>();
  42
  43     @Inject
  44     public ElanInstanceListener(final DataBroker db, final ElanClusterUtils elanClusterUtils) {
  45         super(ElanInstance.class, ElanInstanceListener.class);
  46         broker = 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 == null || connections.isEmpty()) {
  65                     return null;
  66                 }
  67                 try {
  68                     ReadWriteTransaction tx = this.broker.newReadWriteTransaction();
  69                     for (L2gatewayConnection connection : connections) {
  70                         InstanceIdentifier<L2gatewayConnection> iid = InstanceIdentifier.create(Neutron.class)
  71                             .child(L2gatewayConnections.class).child(L2gatewayConnection.class, connection.getKey());
  72                         tx.delete(LogicalDatastoreType.CONFIGURATION, iid);
  73                     }
  74                     tx.submit().checkedGet();
  75                 } catch (TransactionCommitFailedException e) {
  76                     LOG.error("Failed to delete associated l2gwconnection while deleting network", e);
  77                 }
  78                 return null;
  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         List<Runnable> runnables = WAITING_JOB_LIST.get(add.getElanInstanceName());
  90         if (runnables != null) {
  91             runnables.forEach(Runnable::run);
  92         }
  93     }
  94
  95     public static void runJobAfterElanIsAvailable(String elanName, Runnable runnable) {
  96         WAITING_JOB_LIST.computeIfAbsent(elanName, (name) -> new ArrayList<>());
  97         WAITING_JOB_LIST.get(elanName).add(runnable);
  98     }
  99
 100     @Override
 101     protected ElanInstanceListener getDataTreeChangeListener() {
 102         return ElanInstanceListener.this;
 103     }
 104
 105     @Override
 106     protected InstanceIdentifier<ElanInstance> getWildCardPath() {
 107         return InstanceIdentifier.create(ElanInstances.class).child(ElanInstance.class);
 108     }
 109
 110 }