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70 lines
2.8 KiB
Lua
70 lines
2.8 KiB
Lua
--
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-- (C) 2019-21 - ntop.org
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--
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-- ##############################################
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local other_alert_keys = require "other_alert_keys"
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package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
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local json = require("dkjson")
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local alert_creators = require "alert_creators"
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local format_utils = require "format_utils"
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-- Import the classes library.
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local classes = require "classes"
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-- Make sure to import the Superclass!
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local alert = require "alert"
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-- ##############################################
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local alert_threshold_cross = classes.class(alert)
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-- ##############################################
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alert_threshold_cross.meta = {
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alert_key = other_alert_keys.alert_threshold_cross,
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i18n_title = "alerts_dashboard.threashold_cross",
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icon = "fas fa-fw fa-arrow-circle-up",
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}
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-- ##############################################
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-- @brief Prepare an alert table used to generate the alert
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-- @param metric Same as `alert_subtype`
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-- @param value A number indicating the measure which crossed the threshold
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-- @param operator A string indicating the operator used when evaluating the threshold, one of "gt", ">", "<"
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-- @param threshold A number indicating the threshold compared with `value` using operator
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-- @return A table with the alert built
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function alert_threshold_cross:init(metric, value, operator, threshold)
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-- Call the parent constructor
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self.super:init()
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self.alert_type_params = alert_creators.createThresholdCross(metric, value, operator, threshold)
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end
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-- #######################################################
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-- @brief Format an alert into a human-readable string
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-- @param ifid The integer interface id of the generated alert
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-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
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-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
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-- @return A human-readable string
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function alert_threshold_cross.format(ifid, alert, alert_type_params)
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local alert_consts = require("alert_consts")
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local entity = alert_consts.formatAlertEntity(ifid, alert_consts.alertEntityRaw(alert["entity_id"]), alert["name"])
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local engine_label = alert_consts.alertEngineLabel(alert_consts.alertEngine(alert_consts.sec2granularity(alert["granularity"])))
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return i18n("alert_messages.threshold_crossed", {
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granularity = engine_label,
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metric = alert_type_params.metric,
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entity = entity,
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host_category = format_utils.formatAddressCategory((json.decode(alert.json)).alert_generation.host_info),
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value = format_utils.formatValue(alert_type_params.value),
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op = "&".. (alert_type_params.operator or "gt") ..";",
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threshold = format_utils.formatValue(alert_type_params.threshold),
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})
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end
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-- #######################################################
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return alert_threshold_cross
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