Migrates alerts to an object-oriented implementation

scripts/plugins/alerts/internals/no_if_activity/alert_definitions/alert_no_if_activity.lua

@@ -1,34 +1,54 @@
 --
--- (C) 2020 - ntop.org
+-- (C) 2019-20 - ntop.org
 --
 
-local alert_keys = require "alert_keys"
-local alert_creators = require "alert_creators"
-
--- #######################################################
-
-local function noIfActivity(ifid, alert, no_if_activity_ctrs)
-  return(i18n("no_if_activity.status_no_activity_description"))
-end
-
 -- ##############################################
 
-local function createNoIfActivity(alert_severity, alert_granularity)
-  local no_if_activity_type = {
-     alert_granularity = alert_granularity,
-     alert_severity = alert_severity,
-     alert_type_params = {}
-  }
+local alert_keys = require "alert_keys"
+-- Import the classes library.
+local classes = require "classes"
+-- Make sure to import the Superclass!
+local alert = require "alert"
 
-  return no_if_activity_type
+-- ##############################################
+
+local alert_no_if_activity = classes.class(alert)
+
+-- ##############################################
+
+alert_no_if_activity.meta = {  
+alert_key = alert_keys.ntopng.alert_no_if_activity,
+i18n_title = "no_if_activity.alert_no_activity_title",
+icon = "fas fa-arrow-circle-up",
+}
+
+-- ##############################################
+
+-- @brief Prepare an alert table used to generate the alert
+-- @param one_param The first alert param
+-- @param another_param The second alert param
+-- @return A table with the alert built
+function alert_no_if_activity:init(one_param, another_param)
+   -- Call the paren constructor
+   self.super:init()
+
+   self.alert_type_params = {
+      one_param = one_param,
+      another_param = another_param
+   }
 end
 
 -- #######################################################
 
-return {
-  alert_key = alert_keys.ntopng.alert_no_if_activity,
-  i18n_title = "no_if_activity.alert_no_activity_title",
-  i18n_description = noIfActivity,
-  icon = "fas fa-arrow-circle-up",
-  creator = createNoIfActivity,
-}
+-- @brief Format an alert into a human-readable string
+-- @param ifid The integer interface id of the generated alert
+-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
+-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
+-- @return A human-readable string
+function alert_no_if_activity.format(ifid, alert, alert_type_params)
+  i18n("no_if_activity.status_no_activity_description")
+end
+
+-- #######################################################
+
+return alert_no_if_activity