Consider clustering plugin as another source of clustering implementation....

Consider clustering plugin as another source of clustering implementation. This should not be the final implementation. Otherwise people implementing their own clustering solution will need to hack their plugin in the list. :(

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/branches/openfire_3_5_1@10246 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/util/cache/CacheFactory.java

@@ -457,7 +457,7 @@ public class CacheFactory {
         try {
             CacheFactoryStrategy cacheFactory = (CacheFactoryStrategy) Class.forName(
                     clusteredCacheFactoryClass, true,
-                    getClusteredCacheStrategyClassLoader("enterprise")).newInstance();
+                    getClusteredCacheStrategyClassLoader()).newInstance();
             return cacheFactory.getMaxClusterNodes();
         } catch (ClassNotFoundException e) {
             // Do nothing
@@ -532,15 +532,18 @@ public class CacheFactory {
         }
     }
 
-    private static ClassLoader getClusteredCacheStrategyClassLoader(String pluginName) {
+    private static ClassLoader getClusteredCacheStrategyClassLoader() {
         PluginManager pluginManager = XMPPServer.getInstance().getPluginManager();
-        Plugin enterprisePlugin = pluginManager.getPlugin(pluginName);
-        PluginClassLoader pluginLoader = pluginManager.getPluginClassloader(enterprisePlugin);
+        Plugin plugin = pluginManager.getPlugin("clustering");
+        if (plugin == null) {
+            plugin = pluginManager.getPlugin("enterprise");
+        }
+        PluginClassLoader pluginLoader = pluginManager.getPluginClassloader(plugin);
         if (pluginLoader != null) {
             return pluginLoader;
         }
         else {
-            Log.debug("Unable to find PluginClassloader for plugin: " + pluginName + " in CacheFactory.");
+            Log.debug("CacheFactory - Unable to find a Plugin that provides clustering support.");
             return Thread.currentThread().getContextClassLoader();
         }
     }
@@ -550,7 +553,7 @@ public class CacheFactory {
         clusteringStarting = true;
         try {
             cacheFactoryStrategy = (CacheFactoryStrategy) Class.forName(clusteredCacheFactoryClass, true,
-                    getClusteredCacheStrategyClassLoader("enterprise"))
+                    getClusteredCacheStrategyClassLoader())
                     .newInstance();
             clusteringStarted = cacheFactoryStrategy.startCluster();
         }