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Add trace when alerts queue limit is exceeded

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This commit is contained in:
emanuele-f 2019-07-15 15:37:20 +02:00
parent 15879e635d
commit 9fa3b7920c
3 changed files with 17 additions and 6 deletions
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9
scripts/lua/modules/alerts_api.lua
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@ -13,7 +13,7 @@ local do_trace = false
local alerts = {}
local MAX_NUM_ENQUEUED_ALERTS_EVENTS = 100
local MAX_NUM_ENQUEUED_ALERTS_EVENTS = 4096
local ALERTS_EVENTS_QUEUE = "ntopng.cache.alerts_events_queue"
local ALERT_CHECKS_MODULES_BASEDIR = dirs.installdir .. "/scripts/callbacks/interface/alerts"
@ -228,9 +228,14 @@ end
local function enqueueAlertEvent(alert_event)
local event_json = json.encode(alert_event)
local trim = nil
ntop.rpushCache(ALERTS_EVENTS_QUEUE, event_json, MAX_NUM_ENQUEUED_ALERTS_EVENTS)
if(ntop.llenCache(ALERTS_EVENTS_QUEUE) > MAX_NUM_ENQUEUED_ALERTS_EVENTS) then
trim = math.ceil(MAX_NUM_ENQUEUED_ALERTS_EVENTS/2)
traceError(TRACE_WARNING, TRACE_CONSOLE, string.format("Alerts event queue too long: dropping %u alerts", trim))
end
ntop.rpushCache(ALERTS_EVENTS_QUEUE, event_json, trim)
return(true)
end