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Migrates alerts to an object-oriented implementation

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matteo 2020-12-22 12:58:51 +01:00
parent c1a7ff08ae
commit fbc283f12f
108 changed files with 2793 additions and 1737 deletions
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60
scripts/lua/modules/alert_definitions/alert_threshold_cross.lua
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@ -2,35 +2,69 @@
-- (C) 2019-20 - ntop.org
--
local json = require("dkjson")
-- ##############################################
local alert_keys = require "alert_keys"
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
local json = require("dkjson")
local alert_creators = require "alert_creators"
local format_utils = require "format_utils"
-- Import the classes library.
local classes = require "classes"
-- Make sure to import the Superclass!
local alert = require "alert"
-- ##############################################
local alert_threshold_cross = classes.class(alert)
-- ##############################################
alert_threshold_cross.meta = {
alert_key = alert_keys.ntopng.alert_threshold_cross,
i18n_title = "alerts_dashboard.threashold_cross",
icon = "fas fa-arrow-circle-up",
}
-- ##############################################
-- @brief Prepare an alert table used to generate the alert
-- @param metric Same as `alert_subtype`
-- @param value A number indicating the measure which crossed the threshold
-- @param operator A string indicating the operator used when evaluating the threshold, one of "gt", ">", "<"
-- @param threshold A number indicating the threshold compared with `value` using operator
-- @return A table with the alert built
function alert_threshold_cross:init(metric, value, operator, threshold)
-- Call the paren constructor
self.super:init()
self.alert_type_params = alert_creators.createThresholdCross(metric, value, operator, threshold)
end
-- #######################################################
local function formatThresholdCross(ifid, alert, threshold_info)
-- @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_threshold_cross.format(ifid, alert, alert_type_params)
local alert_consts = require("alert_consts")
local entity = alert_consts.formatAlertEntity(ifid, alert_consts.alertEntityRaw(alert["alert_entity"]), alert["alert_entity_val"])
local engine_label = alert_consts.alertEngineLabel(alert_consts.alertEngine(alert_consts.sec2granularity(alert["alert_granularity"])))
return i18n("alert_messages.threshold_crossed", {
granularity = engine_label,
metric = threshold_info.metric,
metric = alert_type_params.metric,
entity = entity,
host_category = format_utils.formatAddressCategory((json.decode(alert.alert_json)).alert_generation.host_info),
value = string.format("%u", math.ceil(threshold_info.value)),
op = "&".. (threshold_info.operator or "gt") ..";",
threshold = threshold_info.threshold,
value = string.format("%u", math.ceil(alert_type_params.value)),
op = "&".. (alert_type_params.operator or "gt") ..";",
threshold = alert_type_params.threshold,
})
end
-- #######################################################
return {
alert_key = alert_keys.ntopng.alert_threshold_cross,
i18n_title = "alerts_dashboard.threashold_cross",
i18n_description = formatThresholdCross,
icon = "fas fa-arrow-circle-up",
creator = alert_creators.createThresholdCross,
}
return alert_threshold_cross