L2 Gw connection support and Elan manager changes

[vpnservice.git] / elanmanager / elanmanager-api / src / main / java / org / opendaylight / elanmanager / utils / ElanL2GwCacheUtils.java

diff --git a/elanmanager/elanmanager-api/src/main/java/org/opendaylight/elanmanager/utils/ElanL2GwCacheUtils.java b/elanmanager/elanmanager-api/src/main/java/org/opendaylight/elanmanager/utils/ElanL2GwCacheUtils.java
new file mode 100644 (file)
index 0000000..4022cc2
--- /dev/null
+++ b/elanmanager/elanmanager-api/src/main/java/org/opendaylight/elanmanager/utils/ElanL2GwCacheUtils.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2016 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.elanmanager.utils;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.opendaylight.vpnservice.neutronvpn.api.l2gw.L2GatewayDevice;
+import org.opendaylight.vpnservice.utils.cache.CacheUtil;
+
+public class ElanL2GwCacheUtils {
+    private static final ConcurrentHashMap<String, L2GatewayDevice> EMPTY_MAP = new ConcurrentHashMap<String, L2GatewayDevice>();
+    public static final String L2GATEWAY_CONN_CACHE_NAME = "L2GWCONN";
+
+    public static void createElanL2GwDeviceCache() {
+        if (CacheUtil.getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME) == null) {
+            CacheUtil.createCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        }
+    }
+
+    public static void addL2GatewayDeviceToCache(String elanName, L2GatewayDevice l2GwDevice) {
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
+                (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
+                        ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
+        if (deviceMap == null) {
+            synchronized(ElanL2GwCacheUtils.class) {
+                deviceMap = cachedMap.get(elanName);
+                if (deviceMap == null) {
+                    deviceMap = new ConcurrentHashMap<String, L2GatewayDevice>();
+                    cachedMap.put(elanName, deviceMap);
+                }
+            }
+        }
+        deviceMap.put(l2GwDevice.getHwvtepNodeId(), l2GwDevice);
+    }
+
+    public static void removeL2GatewayDeviceFromAllElanCache(String deviceName) {
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
+                (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
+                        ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        for (String elanName : cachedMap.keySet()) {
+            ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
+            if (deviceMap != null) {
+                deviceMap.remove(deviceName);
+            }
+        }
+    }
+
+
+    public static L2GatewayDevice removeL2GatewayDeviceFromCache(String elanName, String deviceName) {
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
+                (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
+                        ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
+        if (deviceMap != null) {
+            L2GatewayDevice device = deviceMap.remove(deviceName);
+            return device;
+        } else {
+            return null;
+        }
+    }
+
+    public static L2GatewayDevice getL2GatewayDeviceFromCache(String elanName, String deviceName) {
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
+                (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
+                        ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        ConcurrentMap<String, L2GatewayDevice> deviceMap = cachedMap.get(elanName);
+        if (deviceMap != null) {
+            return deviceMap.get(deviceName);
+        } else {
+            return null;
+        }
+    }
+
+    public static ConcurrentMap<String, L2GatewayDevice> getAllElanL2GatewayDevicesFromCache(String elanName) {
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap = (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil
+                .getCache(ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        ConcurrentMap<String, L2GatewayDevice> result = cachedMap.get(elanName);
+        if (result == null) {
+            result = EMPTY_MAP;
+        }
+        return result;
+    }
+
+    public static List<L2GatewayDevice> getAllElanDevicesFromCache() {
+        List<String> l2GwsList = new ArrayList<>();
+        ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>> cachedMap =
+                (ConcurrentMap<String, ConcurrentMap<String, L2GatewayDevice>>) CacheUtil.getCache(
+                        ElanL2GwCacheUtils.L2GATEWAY_CONN_CACHE_NAME);
+        if (cachedMap == null || cachedMap.isEmpty()) {
+            return null;
+        }
+
+        List<L2GatewayDevice> l2GwDevices = new ArrayList<L2GatewayDevice>();
+        for (ConcurrentMap<String, L2GatewayDevice> l2gwDevices : cachedMap.values())
+        {
+            for (L2GatewayDevice l2gwDevice : l2gwDevices.values() ) {
+                l2GwDevices.add(l2gwDevice);
+            }
+        }
+
+        return l2GwDevices;
+    }
+
+}