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