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Adds optional JSON syslog alert format

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This commit is contained in:
Simone Mainardi 2018-09-06 17:23:56 +02:00
parent 603bc2d31c
commit a86239fac3
5 changed files with 61 additions and 8 deletions
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29
scripts/lua/modules/alert_endpoints/syslog.lua
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@ -17,11 +17,16 @@ function syslog.dequeueAlerts(queue)
return {success = true}
end
local syslog_format = ntop.getPref("ntopng.prefs.syslog_alert_format")
if isEmptyString(syslog_format) then
syslog_format = "plaintext"
end
-- Separate by severity and channel
local alerts_by_types = {}
for _, json_message in ipairs(notifications) do
local notif = alertNotificationToObject(json_message)
local notif = alertNotificationToObject(json_message)
alerts_by_types[notif.entity_type] = alerts_by_types[notif.entity_type] or {}
alerts_by_types[notif.entity_type][notif.severity] = alerts_by_types[notif.entity_type][notif.severity] or {}
@ -32,12 +37,24 @@ function syslog.dequeueAlerts(queue)
for severity, notifications in pairs(by_severity) do
-- Most recent notifications first
for _, notif in pairsByValues(notifications, notification_timestamp_rev) do
local msg = formatAlertNotification(notif, {nohtml = true,
show_severity = true,
show_entity = true})
local syslog_severity = alertLevelToSyslogLevel(notif.severity)
local msg
if syslog_format == "plaintext" then
-- prepare a plaintext message
msg = formatAlertNotification(notif, {nohtml = true,
show_severity = true,
show_entity = true})
else -- syslog_format == "json" then
-- send out the json message but prepare a nice
-- message
notif.message = formatAlertNotification(notif, {nohtml = true,
show_severity = false,
show_entity = false})
msg = json.encode(notif)
end
ntop.syslog(msg, syslog_severity)
end
end