elanmanager/impl/src/main/java/org/opendaylight/netvirt/elan/l2gw/listeners/HwvtepConfigNodeCache.java

   1 /*
   2  * Copyright (c) 2019 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
   9 package org.opendaylight.netvirt.elan.l2gw.listeners;
  10
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.concurrent.ConcurrentHashMap;
  15 import javax.inject.Inject;
  16 import javax.inject.Singleton;
  17 import org.opendaylight.genius.mdsalutil.cache.InstanceIdDataObjectCache;
  18 import org.opendaylight.genius.utils.batching.ResourceBatchingManager;
  19 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundConstants;
  20 import org.opendaylight.infrautils.caches.CacheProvider;
  21 import org.opendaylight.mdsal.binding.api.DataBroker;
  22 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  25 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  26 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28
  29 @Singleton
  30 public class HwvtepConfigNodeCache extends InstanceIdDataObjectCache<Node> {
  31
  32     private final DataBroker dataBroker;
  33     private final Map<InstanceIdentifier<Node>, Node> cache = new ConcurrentHashMap<>();
  34     private final Map<InstanceIdentifier<Node>, List<Runnable>> waitList = new ConcurrentHashMap<>();
  35
  36     @Inject
  37     public HwvtepConfigNodeCache(final DataBroker dataBroker, CacheProvider cacheProvider) {
  38         super(Node.class, dataBroker, LogicalDatastoreType.CONFIGURATION,
  39             InstanceIdentifier.create(NetworkTopology.class)
  40                 .child(Topology.class, new TopologyKey(HwvtepSouthboundConstants.HWVTEP_TOPOLOGY_ID))
  41                 .child(Node.class), cacheProvider);
  42         this.dataBroker = dataBroker;
  43         ResourceBatchingManager.getInstance().registerDefaultBatchHandlers(this.dataBroker);
  44     }
  45
  46     @Override
  47     protected void removed(InstanceIdentifier<Node> key, Node deleted) {
  48         cache.remove(key);
  49     }
  50
  51     /*@Override
  52     protected void update(InstanceIdentifier<Node> key, Node old, Node added) {
  53         cache.put(key, added);
  54     }*/
  55
  56     @Override
  57     protected synchronized void added(InstanceIdentifier<Node> key, Node added) {
  58         cache.put(key, added);
  59         if (waitList.containsKey(key)) {
  60             waitList.remove(key).stream().forEach(runnable -> runnable.run());
  61         }
  62     }
  63
  64     public Node getConfigNode(InstanceIdentifier<Node> key) {
  65         return cache.get(key);
  66     }
  67
  68     public synchronized void runAfterNodeAvailable(InstanceIdentifier<Node> key, Runnable runnable) {
  69         if (cache.containsKey(key)) {
  70             runnable.run();
  71         } else {
  72             waitList.putIfAbsent(key, new ArrayList<>());
  73             waitList.get(key).add(runnable);
  74         }
  75     }
  76 }