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Add host availability percentage

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This commit is contained in:
emanuele-f 2020-04-23 16:06:04 +02:00
parent bc154394e9
commit 7bd499adb9
5 changed files with 72 additions and 16 deletions
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36
scripts/plugins/active_monitoring/modules/am_utils.lua
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@ -144,6 +144,42 @@ end
-- ##############################################
-- Get the total host availability in the past day (0-100)%
-- nil is returned when no data is available.
-- An host is considered available when it is reachable and within the
-- threshold.
function am_utils.getAvailability(host, measurement)
local key = am_utils.getAmHostKey(host, measurement)
local redis_k = am_hour_stats_key(key)
local hour_stats = ntop.getCache(redis_k)
if(isEmptyString(hour_stats)) then
return(nil)
end
hour_stats = json.decode(hour_stats)
if((hour_stats == nil) or (hour_stats.hstats == nil)) then
return(nil)
end
local tot_available = 0
local tot_unavailable = 0
for i=1,24 do
local pt = hour_stats.hstats[i]
if pt then
tot_available = tot_available + pt[HOUR_STATS_OK]
tot_unavailable = tot_unavailable + pt[HOUR_STATS_EXCEEDED] + pt[HOUR_STATS_UNREACHABLE]
end
end
return(tot_available * 100 / (tot_available + tot_unavailable))
end
-- ##############################################
-- Note: alerts requires a unique key to be used in order to identity the
-- entity. This key is also used internally as a key into the lua tables.
function am_utils.getAmHostKey(host, measurement)