Initial work on faster offline presence.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@6351 b35dd754-fafc-0310-a699-88a17e54d16e

src/database/wildfire_hsqldb.sql

@@ -40,6 +40,12 @@ CREATE TABLE jiveOffline (
   CONSTRAINT jiveOffline_pk PRIMARY KEY (username, messageID)
 );
 
+CREATE TABLE jivePresence (
+  username              VARCHAR(64)     NOT NULL,
+  offlinePresence       LONGVARCHAR,
+  lastActivity          VARCHAR(15),
+  CONSTRAINT jivePresence_pk PRIMARY KEY (username)
+);
 
 CREATE TABLE jiveRoster (
   rosterID              BIGINT          NOT NULL,

src/java/org/jivesoftware/wildfire/spi/PresenceManagerImpl.java

@@ -16,6 +16,8 @@ import org.dom4j.DocumentException;
 import org.dom4j.DocumentHelper;
 import org.jivesoftware.util.LocaleUtils;
 import org.jivesoftware.util.Log;
+import org.jivesoftware.util.Cache;
+import org.jivesoftware.util.CacheManager;
 import org.jivesoftware.wildfire.*;
 import org.jivesoftware.wildfire.auth.UnauthorizedException;
 import org.jivesoftware.wildfire.component.InternalComponentManager;
@@ -58,6 +60,9 @@ public class PresenceManagerImpl extends BasicModule implements PresenceManager
 
     private InternalComponentManager componentManager;
 
+    private Cache lastActivityCache;
+    private Cache offlinePresenceCache;
+
     public PresenceManagerImpl() {
         super("Presence manager");
 
@@ -378,6 +383,10 @@ public class PresenceManagerImpl extends BasicModule implements PresenceManager
     public void initialize(XMPPServer server) {
         super.initialize(server);
         this.server = server;
+
+        offlinePresenceCache = CacheManager.initializeCache("Offline Presence Cache", "offlinePresence", 512*1024);
+        lastActivityCache = CacheManager.initializeCache("Last Activity Cache", "lastActivity", 128*1024);
+
         deliverer = server.getPacketDeliverer();
         sessionManager = server.getSessionManager();
         userManager = server.getUserManager();
@@ -385,6 +394,12 @@ public class PresenceManagerImpl extends BasicModule implements PresenceManager
         rosterManager = server.getRosterManager();
     }
 
+    public void stop() {
+        // Clear the caches when stopping the module.
+        offlinePresenceCache.clear();
+        lastActivityCache.clear();
+    }
+
     private Component getComponent(JID probee) {
         // Check for registered components
         Component component = componentManager.getComponent(probee);