elanmanager/api/src/main/java/org/opendaylight/netvirt/elanmanager/utils/ElanL2GwCacheUtils.java

   1 /*
   2  * Copyright © 2016, 2017 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.elanmanager.utils;
  10
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.concurrent.ConcurrentHashMap;
  14 import java.util.concurrent.ConcurrentMap;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.genius.utils.cache.CacheUtil;
  17 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  18
  19 public final class ElanL2GwCacheUtils {
  20
  21     private static final ConcurrentHashMap<String, L2GatewayDevice> EMPTY_MAP = new ConcurrentHashMap<>();
  22     public static final String L2GATEWAY_CONN_CACHE_NAME = "L2GWCONN";
  23
  24     private ElanL2GwCacheUtils() {
  25     }
  26
  27     static {
  28         CacheUtil.createCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  29     }
  30
  31     public static void addL2GatewayDeviceToCache(String elanName, L2GatewayDevice l2GwDevice) {
  32         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  33                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  34                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  35         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  36         if (deviceMap == null) {
  37             synchronized (ElanL2GwCacheUtils.class) {
  38                 deviceMap = cachedMap.computeIfAbsent(elanName, k -> new ConcurrentHashMap<>());
  39             }
  40         }
  41         deviceMap.put(l2GwDevice.getHwvtepNodeId(), l2GwDevice);
  42     }
  43
  44     public static void removeL2GatewayDeviceFromAllElanCache(String deviceName) {
  45         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  46                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  47                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  48         cachedMap.values().forEach(deviceMap -> deviceMap.remove(deviceName));
  49     }
  50
  51     @Nullable
  52     public static L2GatewayDevice removeL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  53         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  54                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  55                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  56         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  57         if (deviceMap != null) {
  58             return deviceMap.remove(l2gwDeviceNodeId);
  59         } else {
  60             return null;
  61         }
  62     }
  63
  64     @Nullable
  65     public static L2GatewayDevice getL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  66         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  67                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  68                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  69         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  70         if (deviceMap != null) {
  71             return deviceMap.get(l2gwDeviceNodeId);
  72         } else {
  73             return null;
  74         }
  75     }
  76
  77     public static ConcurrentMap<String, L2GatewayDevice> getInvolvedL2GwDevices(String elanName) {
  78         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  79                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil
  80                 .getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  81         ConcurrentMap<String, L2GatewayDevice> result = cachedMap.get(elanName);
  82         if (result == null) {
  83             result = EMPTY_MAP;
  84         }
  85         return result;
  86     }
  87
  88     @Nullable
  89     public static List<L2GatewayDevice> getAllElanDevicesFromCache() {
  90         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  91                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  92                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  93         if (cachedMap == null || cachedMap.isEmpty()) {
  94             return null;
  95         }
  96
  97         List<L2GatewayDevice> l2GwDevices = new ArrayList<>();
  98         for (ConcurrentMap<String, L2GatewayDevice> l2gwDevices : cachedMap.values()) {
  99             for (L2GatewayDevice l2gwDevice : l2gwDevices.values()) {
 100                 l2GwDevices.add(l2gwDevice);
 101             }
 102         }
 103         return l2GwDevices;
 104     }
 105 }