Merge pull request #431 from guusdk/OF-992

OF-992: Re-init on restart

src/java/org/jivesoftware/openfire/http/HttpSessionManager.java

@@ -81,25 +81,37 @@ public class HttpSessionManager {
     	
         JiveGlobals.migrateProperty("xmpp.httpbind.worker.threads");
         JiveGlobals.migrateProperty("xmpp.httpbind.worker.timeout");
+    }
 
-        this.sessionManager = SessionManager.getInstance();
-        init();
+    /**
+     * @deprecated As of Openfire 4.0.0, the functionality of this method was added to the implementation of #start().
+     */
+    @Deprecated
+    public void init() {}
+
+	private int getCorePoolSize(int maxPoolSize) {
+		return (maxPoolSize/4)+1;
 	}
 
-    public void init() {
-        Log.warn("HttpSessionManager.init() recreate sendPacketPool");
-        // Configure a pooled executor to handle async routing for incoming packets
-        // with a default size of 16 threads ("xmpp.httpbind.worker.threads"); also
-        // uses an unbounded task queue and configurable keep-alive (default: 60 secs)
+    /**
+     * Starts the services used by the HttpSessionManager.
+     *
+     * (Re)creates and configures a pooled executor to handle async routing for incoming packets with a configurable
+     * (through property "xmpp.httpbind.worker.threads") amount of threads; also uses an unbounded task queue and
+     * configurable ("xmpp.httpbind.worker.timeout") keep-alive.
+     *
+     * Note: Apart from the processing threads configured in this class, the server also uses a threadpool to perform
+     * the network IO (as configured in ({@link HttpBindManager}). BOSH installations expecting heavy loads may want to
+     * allocate additional threads to this worker pool to ensure timely delivery of inbound packets
+     */
+    public void start() {
+        Log.info( "Starting instance" );
 
-        // Note: server supports up to 254 client threads by default (@see HttpBindManager)
-        // BOSH installations expecting heavy loads may want to allocate additional threads 
-        // to this worker pool to ensure timely delivery of inbound packets
+        this.sessionManager = SessionManager.getInstance();
 
-        int maxPoolSize = JiveGlobals.getIntProperty("xmpp.httpbind.worker.threads", 
-				// use deprecated property as default (shared with ConnectionManagerImpl)
-				JiveGlobals.getIntProperty("xmpp.client.processing.threads", 8));
-        int keepAlive = JiveGlobals.getIntProperty("xmpp.httpbind.worker.timeout", 60);
+        final int maxClientPoolSize = JiveGlobals.getIntProperty( "xmpp.client.processing.threads", 8 );
+        final int maxPoolSize = JiveGlobals.getIntProperty("xmpp.httpbind.worker.threads", maxClientPoolSize );
+        final int keepAlive = JiveGlobals.getIntProperty( "xmpp.httpbind.worker.timeout", 60 );
 
         sendPacketPool = new ThreadPoolExecutor(getCorePoolSize(maxPoolSize), maxPoolSize, keepAlive, TimeUnit.SECONDS,
                 new LinkedBlockingQueue<Runnable>(), // unbounded task queue
@@ -113,26 +125,19 @@ public class HttpSessionManager {
                         return thread;
                     }
                 });
-    }
 
-	private int getCorePoolSize(int maxPoolSize) {
-		return (maxPoolSize/4)+1;
-	}
+        sendPacketPool.prestartCoreThread();
 
-    /**
-     * Starts the services used by the HttpSessionManager.
-     */
-    public void start() {
+        // Periodically check for Sessions that need a cleanup.
         inactivityTask = new HttpSessionReaper();
-        TaskEngine.getInstance().schedule(inactivityTask, 30 * JiveConstants.SECOND,
-                30 * JiveConstants.SECOND);
-        sendPacketPool.prestartCoreThread();
+        TaskEngine.getInstance().schedule( inactivityTask, 30 * JiveConstants.SECOND, 30 * JiveConstants.SECOND );
     }
 
     /**
      * Stops any services and cleans up any resources used by the HttpSessionManager.
      */
     public void stop() {
+        Log.info( "Stopping instance" );
         inactivityTask.cancel();
         for (HttpSession session : sessionMap.values()) {
             session.close();