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.Collections;
  13 import java.util.List;
  14 import java.util.concurrent.ConcurrentHashMap;
  15 import java.util.concurrent.ConcurrentMap;
  16 import javax.annotation.Nonnull;
  17 import javax.annotation.Nullable;
  18 import org.opendaylight.genius.utils.cache.CacheUtil;
  19 import org.opendaylight.netvirt.neutronvpn.api.l2gw.L2GatewayDevice;
  20
  21 public final class ElanL2GwCacheUtils {
  22
  23     private static final ConcurrentHashMap<String, L2GatewayDevice> EMPTY_MAP = new ConcurrentHashMap<>();
  24     public static final String L2GATEWAY_CONN_CACHE_NAME = "L2GWCONN";
  25
  26     private ElanL2GwCacheUtils() {
  27     }
  28
  29     static {
  30         CacheUtil.createCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  31     }
  32
  33     public static void addL2GatewayDeviceToCache(String elanName, L2GatewayDevice l2GwDevice) {
  34         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  35                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  36                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  37         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  38         if (deviceMap == null) {
  39             synchronized (ElanL2GwCacheUtils.class) {
  40                 deviceMap = cachedMap.computeIfAbsent(elanName, k -> new ConcurrentHashMap<>());
  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         cachedMap.values().forEach(deviceMap -> deviceMap.remove(deviceName));
  51     }
  52
  53     @Nullable
  54     public static L2GatewayDevice removeL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  55         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  56                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  57                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  58         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  59         if (deviceMap != null) {
  60             return deviceMap.remove(l2gwDeviceNodeId);
  61         } else {
  62             return null;
  63         }
  64     }
  65
  66     @Nullable
  67     public static L2GatewayDevice getL2GatewayDeviceFromCache(String elanName, String l2gwDeviceNodeId) {
  68         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  69                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  70                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  71         ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
  72         if (deviceMap != null) {
  73             return deviceMap.get(l2gwDeviceNodeId);
  74         } else {
  75             return null;
  76         }
  77     }
  78
  79     public static ConcurrentMap<String, L2GatewayDevice> getInvolvedL2GwDevices(String elanName) {
  80         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  81                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil
  82                 .getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  83         ConcurrentMap<String, L2GatewayDevice> result = cachedMap.get(elanName);
  84         if (result == null) {
  85             result = EMPTY_MAP;
  86         }
  87         return result;
  88     }
  89
  90     @Nonnull
  91     public static List<L2GatewayDevice> getAllElanDevicesFromCache() {
  92         ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
  93                 (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
  94                         ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
  95         if (cachedMap == null || cachedMap.isEmpty()) {
  96             return Collections.emptyList();
  97         }
  98
  99         List<L2GatewayDevice> l2GwDevices = new ArrayList<>();
 100         for (ConcurrentMap<String, L2GatewayDevice> l2gwDevices : cachedMap.values()) {
 101             for (L2GatewayDevice l2gwDevice : l2gwDevices.values()) {
 102                 l2GwDevices.add(l2gwDevice);
 103             }
 104         }
 105         return l2GwDevices;
 106     }
 107 }