vpnservice/elanmanager/elanmanager-api/src/main/java/org/opendaylight/elanmanager/utils/ElanL2GwCacheUtils.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
   9 package org.opendaylight.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
  16 import org.opendaylight.vpnservice.neutronvpn.api.l2gw.L2GatewayDevice;
  17 import org.opendaylight.vpnservice.utils.cache.CacheUtil;
  18
  19 public class ElanL2GwCacheUtils {
  20     private static final ConcurrentHashMap<String, L2GatewayDevice> EMPTY_MAP = new ConcurrentHashMap<String, L2GatewayDevice>();
  21     public static final String L2GATEWAY_CONN_CACHE_NAME = "L2GWCONN";
  22
  23     public static void createElanL2GwDeviceCache() {
  24         if (CacheUtil.getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME) == null) {
  25             CacheUtil.createCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  26         }
  27     }
  28
  29     public static void addL2GatewayDeviceToCache(String elanName, L2GatewayDevice l2GwDevice) {
  30         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  31                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  32                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  33         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  34         if (deviceMap == null) {
  35             synchronized(ElanL2GwCacheUtils.class) {
  36                 deviceMap = cachedMap.get(elanName);
  37                 if (deviceMap == null) {
  38                     deviceMap = new ConcurrentHashMap<String, L2GatewayDevice>();
  39                     cachedMap.put(elanName, deviceMap);
  40                 }
  41             }
  42         }
  43         deviceMap.put(l2GwDevice.getHwvtepNodeId(), l2GwDevice);
  44     }
  45
  46     public static void removeL2GatewayDeviceFromAllElanCache(String deviceName) {
  47         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  48                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  49                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  50         for (String elanName : cachedMap.keySet()) {
  51             ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  52             if (deviceMap != null) {
  53                 deviceMap.remove(deviceName);
  54             }
  55         }
  56     }
  57
  58
  59     public static L2GatewayDevice removeL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  60         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  61                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  62                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  63         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  64         if (deviceMap != null) {
  65             L2GatewayDevice device = deviceMap.remove(l2gwDeviceNodeId);
  66             return device;
  67         } else {
  68             return null;
  69         }
  70     }
  71
  72     public static L2GatewayDevice getL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  73         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  74                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  75                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  76         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  77         if (deviceMap != null) {
  78             return deviceMap.get(l2gwDeviceNodeId);
  79         } else {
  80             return null;
  81         }
  82     }
  83
  84     public static ConcurrentMap<String, L2GatewayDevice> getInvolvedL2GwDevices(String elanName) {
  85         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap = (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil
  86                 .getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  87         ConcurrentMap<String, L2GatewayDevice> result = cachedMap.get(elanName);
  88         if (result == null) {
  89             result = EMPTY_MAP;
  90         }
  91         return result;
  92     }
  93
  94     public static List<L2GatewayDevice> getAllElanDevicesFromCache() {
  95         List<String> l2GwsList = new ArrayList<>();
  96         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  97                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  98                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  99         if (cachedMap == null || cachedMap.isEmpty()) {
 100             return null;
 101         }
 102
 103         List<L2GatewayDevice> l2GwDevices = new ArrayList<L2GatewayDevice>();
 104         for (ConcurrentMap<String, L2GatewayDevice> l2gwDevices : cachedMap.values())
 105         {
 106             for (L2GatewayDevice l2gwDevice : l2gwDevices.values() ) {
 107                 l2GwDevices.add(l2gwDevice);
 108             }
 109         }
 110
 111         return l2GwDevices;
 112     }
 113
 114 }