mirror of
https://github.com/ntop/ntopng.git
synced 2026-04-29 23:49:33 +00:00
86 lines
2.8 KiB
Lua
86 lines
2.8 KiB
Lua
--
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-- (C) 2013-17 - ntop.org
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--
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dirs = ntop.getDirs()
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package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
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require "lua_utils"
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require "graph_utils"
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require "grafana_utils"
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interface.select(ifname)
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local ifnames = interface.getIfNames()
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if isCORSpreflight() then
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processCORSpreflight()
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else
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local corsr = {}
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corsr["Access-Control-Allow-Origin"] = _SERVER["Origin"]
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sendHTTPHeader('application/json', nil, corsr)
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local epoch_begin = toEpoch(_GRAFANA["payload"]["range"]["from"])
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local epoch_end = toEpoch(_GRAFANA["payload"]["range"]["to"])
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-- override max_num_points in singlerrd2json
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global_max_num_points = _GRAFANA["payload"]["maxDataPoints"]
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if global_max_num_points > 600 then
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global_max_num_points = 600 -- ensures 100% match between ntopng and grafana charts
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end
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local res = {}
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for _, t in pairs(_GRAFANA["payload"]["targets"]) do
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if t["target"] == nil then t["target"] = "" end
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local is_host = string.starts(t["target"] or '', "host_")
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local addr
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if is_host then
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addr = string.match(t["target"], "_(.-)_") -- host address is between the first two underscores
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t["target"] = string.gsub(t["target"], "host_(.-)_", "")
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end
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local is_traffic = string.ends(t["target"], "_traffic_bps") or string.ends(t["target"], "_traffic_total_bytes")
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local is_packets = string.ends(t["target"], "_traffic_pps") or string.ends(t["target"], "_traffic_total_packets")
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local is_allprotos = string.ends(t["target"], "_allprotocols_bps")
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local ifname = string.gsub(t["target"], "^(.-)_", "") -- lazy match to remove up to the first underscore
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ifname = string.gsub(ifname, "_(.-)$", "") -- lazy match to remove up to the last underscore
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local rrdfile = ""
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if is_traffic then rrdfile = "bytes.rrd"
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elseif is_packets then rrdfile = "packets.rrd"
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elseif is_allprotos then rrdfile ="all" end
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local datapoints = {}
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local rr = rrd2json(getInterfaceId(ifname), addr, rrdfile, epoch_begin, epoch_end)
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local totalval = rr["totalval"]
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rr = json.decode(rr["json"])
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local label = ifname
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if is_host then label = addr..", "..label end
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label = "["..label.."]"
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if is_allprotos then
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toSeries(rr, res, label)
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elseif string.ends(t["target"], "traffic_total_bytes") or string.ends(t["target"], "traffic_total_packets") then
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res[#res + 1] = {target="Total", datapoints={{totalval, 0 --[[ it's an integral, an instant is not meaningful here --]]}}}
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else
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toSeries(rr, res, label)
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end
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-- tprint({target=target, is_traffic=is_traffic, is_packets=is_packets, entity_name=entity_name})
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end
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--tprint(_GRAFANA["payload"])
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-- tprint("QUERY")
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-- tprint(_GRAFANA)
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print(json.encode(res, nil))
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end
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