fix nodes publish when role is not enabled

kamailio/nodes-role.cfg

@@ -29,15 +29,11 @@ modparam("mqueue","mqueue", "name=node_heartbeat")
 route[NODES_ADVERTISE_ROUTE]
 {
 
-#!ifdef REGISTRAR_ROLE
-    $var(Registrar) = $_s("Registrar" : {"Registrations" : $(stat(registered_users){s.int})});
-#!else
-    $var(Registrar) = "";
-#!endif
-
+$var(separator) = "";
 #!ifdef DISPATCHER_ROLE
     route(DISPATCHER_STATUS);
     $var(Dispatcher) = $_s("Dispatcher" : {"Groups" : { $var(ds_groups_json) }});
+    $var(separator) = " , ";
 #!else
     $var(Dispatcher) = "";
 #!endif
@@ -50,12 +46,20 @@ route[NODES_ADVERTISE_ROUTE]
     route(COUNT_ALL_PRESENTITIES);
     $var(Presentities) = $_s("Presentities" : {"message-summary" : $xavp(watchers=>message-summary), "dialog" : $xavp(watchers=>dialog), "presence" : $xavp(watchers=>presence)});
 
-    $var(Presence) = $_s("Presence" : {$var(Subscribers), $var(Subscriptions), $var(Presentities)});
+    $var(Presence) = $_s($var(separator) "Presence" : {$var(Subscribers), $var(Subscriptions), $var(Presentities)});
+    $var(separator) = " , ";
 #!else
     $var(Presence) = "";
 #!endif
 
-    $var(Roles) = $_s("Roles" : {$var(Dispatcher), $var(Presence) , $var(Registrar)});
+#!ifdef REGISTRAR_ROLE
+    $var(Registrar) = $_s($var(separator) "Registrar" : {"Registrations" : $(stat(registered_users){s.int})});
+    $var(separator) = " , ";
+#!else
+    $var(Registrar) = "";
+#!endif
+
+    $var(Roles) = $_s("Roles" : {$var(Dispatcher) $var(Presence) $var(Registrar)});
     $var(Payload) = '{"Event-Category" : "nodes", "Event-Name" : "advertise", "Expires" : 5000, "Used-Memory" : $(stat(real_used_size){s.int}), "Startup" : $Tb, "WhApps" : {"kamailio" : {"Startup" : $Tb }},  $var(Roles)}';
     kazoo_publish("nodes", "", $var(Payload));
 }