Removed useless requires for enchanting performances

Removed, where it was possible, the lua requires, with the objective of enchanting the performances of periodic activities

scripts/lua/modules/scripts_triggers.lua

@@ -1,14 +1,58 @@
 --
 -- (C) 2014-21 - ntop.org
 --
+-- Absolutely don't put require inside this file.
+-- It is born to do fast checks, to avoid slowing down
+-- periodics checks and callbacks.
+--
 
 scripts_triggers = {}
 
+
+-- ###########################################
+
+function scripts_triggers.aggregateHttp()
+   if (ntop.getCache("ntopng.prefs.http_traffic_dump")) then
+      return true
+   end
+
+   return false
+end
+   
+-- ###########################################
+
+function midnightStatsResetEnabled()
+   if (ntop.getPref("ntopng.prefs.midnight_stats_reset_enabled") == "1") then
+      return true
+   end
+
+   return false
+end
+
+-- ###########################################
+
+function scripts_triggers.isDumbFlowToSQLEnabled(ifstats)
+   if (ntop.getPrefs()["is_dump_flows_to_mysql_enabled"] and not ifstats.isViewed) then
+      return true
+   end
+
+   return false
+end
+
+-- ###########################################
+
+function scripts_triggers.isDeltaSet()
+   if (ntop.getPref("ntopng.prefs.enable_ts_deltas_writes") == "1") then
+      return true
+   end
+
+   return false
+end
+
 -- ###########################################
 
 function scripts_triggers.isRecordingAvailable()
    local is_available_key = "ntopng.cache.traffic_recording_available"
-   
    if(ntop.isAdministrator() and (ntop.getCache(is_available_key) == "1")) then
       return true
    end
@@ -18,6 +62,37 @@ end
 
 -- ###########################################
 
+function scripts_triggers.isRrdCreationEnabled()
+   if(ntop.getPref("ntopng.prefs.internals_rrd_creation") == "1") then
+      return true
+   end
+   
+   return false
+end
+
+-- ###########################################
+
+function scripts_triggers.isRrdInterfaceCreation()
+   if(ntop.getPref("ntopng.prefs.interface_rrd_creation") ~= "0") then
+      return true
+   end
+   
+   return false
+end
+
+-- ###########################################
+
+function scripts_triggers.hasHighResolutionTs()
+   local active_driver = ntop.getPref("ntopng.prefs.timeseries_driver")
+
+   -- High resolution timeseries means dumping the host timeseries
+   -- every 60 seconds instead of 300 seconds.
+   return((active_driver == "influxdb") and
+	 (ntop.getPref("ntopng.prefs.ts_resolution") ~= "300"))
+end
+
+-- ###########################################
+
 function scripts_triggers.checkReloadLists()
    if((ntop.getCache("ntopng.cache.download_lists_utils") == "1") or (ntop.getCache("ntopng.cache.reload_lists_utils") == "1")) then
       return(true)