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--
-- (C) 2019-21 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
package.path = dirs.installdir .. "/scripts/lua/modules/timeseries/?.lua;" .. package.path
local ts_dump = require "ts_min_dump_utils"
local ts_utils = require("ts_utils_core")
local checks = require("checks")
local json = require("dkjson")
local redis_api = require "redis_api"
local ifid = getSystemInterfaceId()
local hits_key = "ntopng.cache.redis.stats"
local hits_stats = ntop.getCacheStats()
local old_hits_stats = ntop.getCache(hits_key)
-- ##############################################
if redis_api.redisTimeseriesEnabled() then
local stats = redis_api.getStats()
if(not isEmptyString(old_hits_stats)) then
old_hits_stats = json.decode(old_hits_stats) or {}
else
old_hits_stats = {}
end
if stats["memory"] then
ts_utils.append("redis:memory", { ifid = ifid, resident_bytes = stats["memory"] }, when)
end
if stats["dbsize"] then
ts_utils.append("redis:keys", {ifid = ifid, num_keys = stats["dbsize"]}, when)
end
for key, val in pairs(hits_stats) do
if(old_hits_stats[key] ~= nil) then
local delta = math.max(val - old_hits_stats[key], 0)
-- Dump the delta value as a gauge
ts_utils.append("redis:hits", {ifid = ifid, command = key, num_calls = delta}, when)
end
end
ntop.setCache(hits_key, json.encode(hits_stats))
end
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