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57 lines
1.7 KiB
Lua
57 lines
1.7 KiB
Lua
--
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-- (C) 2019-24 - ntop.org
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--
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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_categories = require "alert_categories"
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local script = {
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-- Script category
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category = alert_categories.internals,
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severity = alert_consts.get_printable_severities().error,
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-- See below
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hooks = {},
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gui = {
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i18n_title = "internals.system_alert_drops",
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i18n_description = "internals.system_alert_drops_descr",
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},
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}
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-- #################################################################
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local function dropped_alerts_check(params)
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-- Fetch system host stats
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local system_host_stats = ntop.systemHostStat()
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-- Fetch the number of dropped alerts out of system host stats
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-- The number fetched is the number of drops occured in the internal queue, that is,
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-- in the queue currently used to generate alerts from C
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local dropped_alerts = system_host_stats["alerts_stats"]["alert_queues"]["internal_alerts_queue"]["num_not_enqueued"]
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-- Compute the delta with the previous value for drops
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local delta_drops = alerts_api.interface_delta_val(script.key, params.granularity, dropped_alerts, true --[[ skip first --]])
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local alert = alert_consts.alert_types.alert_dropped_alerts.new(
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interface.getId(),
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delta_drops
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)
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alert:set_info(params)
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if(delta_drops > 0) then
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alert:trigger(params.alert_entity, nil, params.cur_alerts)
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else
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alert:release(params.alert_entity, nil, params.cur_alerts)
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end
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end
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-- #################################################################
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script.hooks.min = dropped_alerts_check
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-- #################################################################
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return script
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