Do not subscribe to Pub/Sub in case we actually do not explicitly have...

Do not subscribe to Pub/Sub in case we actually do not explicitly have configured so. Printouts for better traceability.

coupler/opc-ua-server/cli.h

@@ -184,5 +184,7 @@ void handleCLI(int argc, char **argv) {
       ENABLE_HEART_BEAT_CHECK = true;
       tk = strtok(NULL, ",");
       }
+
+    printf("Heart beat check=%d\n", ENABLE_HEART_BEAT_CHECK);
 }
 

coupler/opc-ua-server/keep_alive_publisher.h

@@ -138,7 +138,7 @@ void callbackTicHeartBeat()
 {
     /* Increase periodically heart beats of the server */
     HEART_BEATS += 1;
-    //UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "heart_beat %d", HEART_BEATS);
+    UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "\theart_beat %d", HEART_BEATS);
 
     // set OPC UA's heat_beat node value
     UA_NodeId myFloatNodeId = UA_NODEID_STRING(1, "heart_beat");
@@ -158,7 +158,6 @@ void callbackTicHeartBeat()
    
     char * end_ptr;
     float final_result = strtof(result2, &end_ptr );
-    //printf( "final_result: %f\n", final_result );
 
     UA_Float myFloat = final_result;
     UA_Variant myVar;

coupler/opc-ua-server/keep_alive_subscriber.h

@@ -60,7 +60,7 @@ static void dataChangeNotificationCallback(UA_Server *server, UA_UInt32 monitore
         if (coupler_id!=COUPLER_ID) {
           UA_LOG_INFO(UA_Log_Stdout, \
                      UA_LOGCATEGORY_USERLAND, \
-                     "HEART BEAT: %d", coupler_id);
+                     "HEART BEAT: %d (%ld)", coupler_id, milli_seconds_now);
 
 	  // convert coupler_id to str
           char* coupler_id_str = convertInt2Str(coupler_id);

coupler/opc-ua-server/server.c

@@ -178,7 +178,9 @@ int main(int argc, char **argv)
   }
 
   // enable subscribe to keep-alive messages
-  enableSubscribeToHeartBeat(server, config);
+  if (ENABLE_HEART_BEAT_CHECK) {
+    enableSubscribeToHeartBeat(server, config);
+  }
 
   // run server
   UA_StatusCode retval = UA_Server_run(server, &running);
@@ -194,4 +196,4 @@ int main(int argc, char **argv)
  
   return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE;
 }
-#endif
\ No newline at end of file
+#endif