Logging enhancements, adds user identifier in message.

joram/joram/mom/core/src/main/java/org/objectweb/joram/mom/proxies/UserAgent.java

 /*
  * JORAM: Java(TM) Open Reliable Asynchronous Messaging
- * Copyright (C) 2001 - 2019 ScalAgent Distributed Technologies
+ * Copyright (C) 2001 - 2021 ScalAgent Distributed Technologies
  * Copyright (C) 2004 France Telecom R&D
  * Copyright (C) 2003 - 2004 Bull SA
  * Copyright (C) 1996 - 2000 Dyade
@@ -1024,12 +1024,12 @@ public final class UserAgent extends Agent implements UserAgentMBean, ProxyAgent
 
     public void run() {
       if (logger.isLoggable(BasicLevel.DEBUG))
-        logger.log(BasicLevel.DEBUG, "HeartBeatTask: run - key=" + key);
+        logger.log(BasicLevel.DEBUG, "HeartBeatTask: " + userId + " run - key=" + key);
 
       long date = System.currentTimeMillis();
       if ((date - lastRequestDate) > timeout) {
         if (logger.isLoggable(BasicLevel.WARN))
-          logger.log(BasicLevel.WARN, "HeartBeatTask: close connection - key=" + key);
+          logger.log(BasicLevel.WARN, "HeartBeatTask: " + userId + " close connection - key=" + key);
 
         Channel.sendTo(userId, (Notification) new CloseConnectionNot2(key.intValue()));
         this.cancel();