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