mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-03 17:30:11 +00:00
106 lines
2.4 KiB
Lua
106 lines
2.4 KiB
Lua
--
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-- (C) 2013-25 - ntop.org
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--
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--
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-- Volatile (across ntopng restarts) in-memory cache
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--
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local dirs = ntop.getDirs()
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package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
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local json = require "dkjson"
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local cache_utils = {}
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-- ##############################################
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-- Loaded at startup
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function cache_utils.initialize()
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local basename = "ntopng.cachedsnmp."
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local len = string.len(basename)
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-- system
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local keys = ntop.getKeysCache(basename.."*.system")
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for k,_ in pairs(keys) do
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local system = json.decode(ntop.getCache(k))
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local ipaddr = string.sub(k, len+1, string.len(k)-7)
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cache_utils.sethostname(ipaddr, system.name)
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end
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-- interfaces
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keys = ntop.getKeysCache(basename.."*.interfaces")
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for k,_ in pairs(keys) do
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local ifaces = json.decode(ntop.getCache(k))
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local ipaddr = string.sub(k, len+1, string.len(k)-11)
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-- tprint("Loading "..ipaddr)
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for if_id,if_v in pairs(ifaces) do
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local val = if_v.alias or if_v.ifname or if_v.name
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if(val ~= nil) then
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cache_utils.setifname(ipaddr, if_id, val)
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end
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end
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end
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-- Debug
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-- tprint(ntop.dumpLuaCache())
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end
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-- ##############################################
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function cache_utils.gethostname(ipaddr)
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return(ntop.getLuaCache("host."..ipaddr))
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end
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-- ##############################################
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function cache_utils.sethostname(ipaddr, name)
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if(debugme) then
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tprint("cache_utils.sethostname(".. ipaddr .. ", ".. name..")")
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end
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return(ntop.setLuaCache("host."..ipaddr, name or ipaddr))
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end
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-- ##############################################
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function cache_utils.getifname(ipaddr, ifid)
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local ret = ntop.getLuaCache("iface."..ipaddr.."@"..ifid)
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if(isEmptyString(ret)) then
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ret = ifid
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end
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if(debugme) then
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tprint(debug.traceback())
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tprint("cache_utils.getifname(".. ipaddr .. ", ".. ifid..") = "..ret)
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end
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return(ret)
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end
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-- ##############################################
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function cache_utils.setifname(ipaddr, ifid, ifname)
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if(ifname == nil) then
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tprint("cache_utils.setifname() ERROR on interface "..ipaddr.." / "..ifid)
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tprint(debug.traceback())
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end
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return(ntop.setLuaCache("iface."..ipaddr.."@"..ifid, ifname or ifid))
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end
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-- ##############################################
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function cache_utils.set(key, val)
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ntop.setLuaCache(key, val)
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end
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-- ##############################################
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return cache_utils
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