ntopng/scripts/lua/rest/v2/get/interface/l7/stats.lua
Simone Mainardi b117e8a23a Adds new REST API v2/
Addresses #5269
2021-07-08 09:57:46 +02:00

124 lines
2.7 KiB
Lua

--
-- (C) 2013-21 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local rest_utils = require("rest_utils")
local stats_utils = require("stats_utils")
--
-- Read statistics about nDPI application protocols on an interface
-- Example: curl -u admin:admin -H "Content-Type: application/json" -d '{"ifid": "1", "ndpistats_mode": "count"}' http://localhost:3000/lua/rest/v2/get/interface/l7/stats.lua
--
-- NOTE: in case of invalid login, no error is returned but redirected to login
--
local rc = rest_utils.consts.success.ok
local res = {}
local ifid = _GET["ifid"]
local ndpistats_mode = _GET["ndpistats_mode"]
local breed = _GET["breed"]
local ndpi_category = _GET["ndpi_category"]
if isEmptyString(ifid) then
rc = rest_utils.consts.err.invalid_interface
rest_utils.answer(rc)
return
end
local show_breed = false
if breed == "true" then
show_breed = true
end
local show_ndpi_category = false
if ndpi_category == "true" then
show_ndpi_category = true
end
interface.select(ifid)
local ndpi_protos = interface.getnDPIProtocols()
local function getAppUrl(app)
if ndpi_protos[app] ~= nil then
return ntop.getHttpPrefix().."/lua/flows_stats.lua?application="..app
end
return nil
end
local stats
local tot = 0
if ndpistats_mode == "sinceStartup" then
stats = interface.getStats()
tot = stats.stats.bytes
elseif ndpistats_mode == "count" then
stats = interface.getnDPIFlowsCount()
else
rest_utils.answer(rest_utils.consts.err.invalid_args)
return
end
if stats == nil then
rest_utils.answer(rest_utils.consts.err.internal_error)
return
end
if(ndpistats_mode == "count") then
tot = 0
for k, v in pairs(stats) do
tot = tot + v
stats[k] = tonumber(v)
end
local threshold = (tot * 3) / 100
local num = 0
for k, v in pairsByValues(stats, rev) do
if((num < 5) and (v > threshold)) then
res[#res + 1] = {
label = k,
value = v,
url = getAppUrl(k),
}
num = num + 1
tot = tot - v
else
break
end
end
if(tot > 0) then
res[#res + 1] = {
label = i18n("other"),
value = tot,
}
elseif(num == 0) then
res[#res + 1] = {
label = i18n("no_flows"),
value = 0,
}
end
rest_utils.answer(rc, res)
return
end
local _ifstats = computeL7Stats(stats, show_breed, show_ndpi_category)
for key, value in pairsByValues(_ifstats, rev) do
res[#res + 1] = {
label = key,
value = value,
url = getAppUrl(key),
}
end
local collapsed = stats_utils.collapse_stats(res, 1, 3 --[[ threshold ]])
rest_utils.answer(rc, collapsed)