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Implements a lua endpoint to send alerts to syslog

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Implements #1973
Implements #1954
This commit is contained in:
Simone Mainardi 2018-09-05 15:26:57 +02:00
parent b1d54fc1a9
commit 8a055b39c5
10 changed files with 157 additions and 80 deletions
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47
scripts/lua/modules/alert_utils.lua
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@ -2659,9 +2659,9 @@ function alertNotificationActionToLabel(action)
local label = ""
if action == "engage" then
label = "Alert Engaged: "
label = "[Engaged]"
elseif action == "release" then
label = "Alert Released: "
label = "[Released]"
end
return label
@ -2684,11 +2684,24 @@ local ALERT_NOTIFICATION_MODULES = {
"custom", "nagios", "slack"
}
if ntop.syslog then
table.insert(ALERT_NOTIFICATION_MODULES, 1, "syslog")
end
if ntop.sendMail then -- only if email support is available
table.insert(ALERT_NOTIFICATION_MODULES, 1, "email")
end
function getAlertNotificationModuleEnableKey(module_name, short)
if module_name == "syslog" and ntop.getPref("ntopng.prefs.alerts_syslog") ~= "" then
-- For backward compatibility
if short then
return "alerts_syslog"
else
return "ntopng.prefs.alerts_syslog"
end
end
local short_k = "alerts." .. module_name .. "_notifications_enabled"
if short then
@ -2784,15 +2797,32 @@ function formatAlertNotification(notif, options)
}
options = table.merge(defaults, options)
local msg_prefix = alertNotificationActionToLabel(notif.action)
local msg = "[" .. formatEpoch(notif.tstamp or 0) .. "]" ..
ternary(defaults.show_severity == true, "", "[" .. alertSeverityLabel(alertSeverity(notif.severity), options.nohtml) .. "]") ..
"[" .. alertTypeLabel(alertType(notif.type), options.nohtml) .."]: "
local msg = "[" .. formatEpoch(notif.tstamp or 0) .. "]"
msg = msg .. ternary(options.show_severity == false, "", "[" .. alertSeverityLabel(alertSeverity(notif.severity), options.nohtml) .. "]") ..
"[" .. alertTypeLabel(alertType(notif.type), options.nohtml) .."]"
-- entity can be hidden for example when one is OK with just the message
if options.show_entity then
msg = msg.."["..alertEntityLabel(alertEntity(notif.entity_type)).."]"
if notif.entity_type ~= "flow" then
local ev = notif.entity_value
if notif.entity_type == "host" then
-- suppresses @0 when the vlan is zero
ev = hostinfo2hostkey(hostkey2hostinfo(notif.entity_value))
end
msg = msg.."["..ev.."]"
end
end
-- add the label, that is, engaged or released
msg = msg .. alertNotificationActionToLabel(notif.action).. " "
if options.nohtml then
msg = msg .. noHtml(msg_prefix .. notif.message)
msg = msg .. noHtml(notif.message)
else
msg = msg .. msg_prefix .. notif.message
msg = msg .. notif.message
end
return msg
@ -2827,6 +2857,7 @@ function processAlertNotifications(now, periodic_frequency, force_export)
-- Process export notifications
for _, m in ipairs(modules) do
if force_export or ((now % m.export_frequency) < periodic_frequency) then
local rv = m.module.dequeueAlerts(m.export_queue)
if not rv.success then