Removed plugin from ntopng and migrated all of them

scripts/lua/modules/notifications/endpoints/alert_store_db.lua

@@ -0,0 +1,125 @@
+--
+-- (C) 2021 - ntop.org
+--
+
+package.path = dirs.installdir .. "/scripts/lua/modules/alert_store/?.lua;" .. package.path
+
+require "lua_utils"
+local json = require "dkjson"
+local alerts_api = require "alerts_api"
+local alert_consts = require "alert_consts"
+
+local alert_store_db = {
+   name = "Alert Store DB",
+   builtin = true, -- Whether this endpoint can be configured from the UI. Disabled for the builtin alert store
+
+   endpoint_params = {
+      -- No params, alert store is builtin
+   },
+   endpoint_template = {
+      plugin_key = "alert_store_db",
+      template_name = "alert_store_db_endpoint.template"
+   },
+   recipient_params = {
+   },
+   recipient_template = {
+      plugin_key = "alert_store_db",
+      template_name = "alert_store_db_recipient.template"
+   },
+}
+
+alert_store_db.EXPORT_FREQUENCY = 1
+alert_store_db.prio = 400
+
+-- ##############################################
+
+local function recipient2sendMessageSettings(recipient)
+   local settings = {
+      -- builtin
+  }
+
+   return settings
+end
+
+
+-- ##############################################
+
+-- Cache alert store to avoid always allocating new instances
+local cached_alert_store = {}
+
+local function get_alert_store(entity_id)
+   local alert_entity = alert_consts.alertEntityById(entity_id)
+   if not alert_entity then
+      return nil
+   end
+
+   local alert_store_name = alert_entity.alert_store_name
+   if not cached_alert_store[alert_store_name] then
+      local alert_store = require(alert_store_name.."_alert_store").new()
+      cached_alert_store[alert_store_name] = alert_store
+   end
+
+   return cached_alert_store[alert_store_name]
+end
+
+-- ##############################################
+
+function alert_store_db.dequeueRecipientAlerts(recipient, budget, high_priority)
+   local more_available = true
+   local budget_used = 0
+
+   -- Now also check for alerts pushed by checks from Lua
+   -- Dequeue alerts up to budget
+   -- Note: in this case budget is the number of alert_store_db alerts to insert into the queue
+   while budget_used <= budget and more_available do
+      local notifications = {}
+
+      for i=1, budget do
+         local notification = ntop.recipient_dequeue(recipient.recipient_id, high_priority)
+         if notification then
+	    notifications[#notifications + 1] = notification.alert
+         else
+	    break
+         end
+      end
+
+      if not notifications or #notifications == 0 then
+         more_available = false
+         break
+      end
+
+      for _, json_message in ipairs(notifications) do
+         local alert = json.decode(json_message)
+
+         if alert.action ~= "engage" then
+	    -- Do not store alerts engaged - they're are handled only in-memory
+
+	    if(alert) then
+	       interface.select(string.format("%d", alert.ifid))
+
+               local alert_store = get_alert_store(alert.entity_id)
+
+               if alert_store then
+                  alert_store:insert(alert)
+               end
+	    end
+   
+         end
+      end
+
+      -- Remove the processed messages from the queue
+      budget_used = budget_used + #notifications
+   end
+
+   return {success = true, more_available = more_available}
+end
+
+-- ##############################################
+
+function alert_store_db.runTest(recipient)
+  return false, "Not implemented"
+end
+
+-- ##############################################
+
+return alert_store_db