Move callbacks scripts into separate tab

scripts/callbacks/interface/interface.lua

@@ -0,0 +1,70 @@
+--
+-- (C) 2019 - ntop.org
+--
+
+local dirs = ntop.getDirs()
+package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
+require "lua_utils"
+require "alert_utils"
+
+local alerts_api = require("alerts_api")
+local alert_consts = require("alert_consts")
+
+local do_trace      = false
+local config_alerts = nil
+local ifid = nil
+local available_modules = nil
+
+-- The function below ia called once (#pragma once)
+function setup(str_granularity)
+   if(do_trace) then print("alert.lua:setup("..str_granularity..") called\n") end
+   ifid = interface.getId()
+   local ifname = interface.setActiveInterfaceId(ifid)
+
+   -- Load the threshold checking functions
+   available_modules = alerts_api.load_check_modules("interface", str_granularity)
+
+   config_alerts = getInterfaceConfiguredAlertThresholds(ifname, str_granularity, available_modules)
+end
+
+-- #################################################################
+
+-- The function below is called once
+function checkAlerts(granularity)
+   local info = interface.getStats()
+   local ifid = interface.getId()
+   local interface_key   = "iface_"..ifid
+   local interface_config = config_alerts[interface_key] or {}
+   local global_config = config_alerts["interfaces"] or {}
+   local has_configured_alerts = (table.len(interface_config) or table.len(global_config))
+   local entity_info = alerts_api.interfaceAlertEntity(ifid)
+
+   if(do_trace) then print("checkInterfaceAlerts()\n") end
+
+   if(has_configured_alerts) then
+      for _, check in pairs(available_modules) do
+        local config = interface_config[check.key] or global_config[check.key]
+
+        if config or check.always_enabled then
+           check.check_function({
+              granularity = granularity,
+              alert_entity = entity_info,
+              entity_info = info,
+              alert_config = config,
+              check_module = check,
+           })
+        end
+      end
+   end
+
+   alerts_api.releaseEntityAlerts(entity_info, interface.getExpiredAlerts(granularity2id(granularity)))
+end
+
+-- #################################################################
+
+function releaseAlerts(granularity)
+  local ifid = interface.getId()
+  local entity_info = alerts_api.interfaceAlertEntity(ifid)
+
+  alerts_api.releaseEntityAlerts(entity_info, interface.getAlerts(granularity))
+end