cache/impl/src/main/java/org/opendaylight/netvirt/cache/impl/l2gw/L2GatewayCacheImpl.java

   1 /*
   2  * Copyright (c) 2017 Inocybe Technologies 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.cache.impl.l2gw;
   9
  10 import java.util.Collection;
  11 import java.util.Collections;
  12 import java.util.concurrent.ConcurrentHashMap;
  13 import java.util.concurrent.ConcurrentMap;
  14 import javax.inject.Singleton;
  15 import org.apache.aries.blueprint.annotation.service.Service;
  16 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayCache;
  17 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  18
  19 /**
  20  * Implementation of L2GatewayCache.
  21  *
  22  * @author Thomas Pantelis
  23  */
  24 @Singleton
  25 @Service(classes = L2GatewayCache.class)
  26 public class L2GatewayCacheImpl implements L2GatewayCache {
  27     private final ConcurrentMap<String, L2GatewayDevice> cache = new ConcurrentHashMap<>();
  28
  29     @Override
  30     public L2GatewayDevice addOrGet(String deviceName) {
  31         return cache.computeIfAbsent(deviceName, key -> new L2GatewayDevice(deviceName));
  32     }
  33
  34     @Override
  35     public L2GatewayDevice remove(String deviceName) {
  36         return deviceName != null ? cache.remove(deviceName) : null;
  37     }
  38
  39     @Override
  40     public L2GatewayDevice get(String deviceName) {
  41         return deviceName != null ? cache.get(deviceName) : null;
  42     }
  43
  44     @Override
  45     public Collection<L2GatewayDevice> getAll() {
  46         return Collections.unmodifiableCollection(cache.values());
  47     }
  48 }