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108 lines
3 KiB
Lua
108 lines
3 KiB
Lua
--
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-- (C) 2013-18 - 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 "grafana_utils"
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if isCORSpreflight() then
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processCORSpreflight()
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else
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interface.select(ifname)
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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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-- tprint("SEARCH")
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-- tprint(_POST)
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local target = _POST["payload"]["target"]
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--[[
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example targets:
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interface_eth0
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host_192.168.2.0
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host_192.168.2.0_interface_eth0
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--]]
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if target == nil then
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target = ""
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end
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local host_info
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local target_interfaces = {}
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-- PARSE the host part of the target
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-- the host part is preceeded by prefix host_
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if isEmptyString(target) or string.starts("host_", target) or string.starts(target, "host_") then
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local addr = string.match(target or '', "_(.-)_") -- assumes address is between the first two underscores
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if isEmptyString(addr) then
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addr = string.match(target or '', "_(.-)$") -- assumes address is between the first underscore and the end of string
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end
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host_info = hostkey2hostinfo(addr or '')
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-- tprint(host_info)
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local a, b = string.find(target, addr or '')
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target = string.sub(target, b + 2 --[[ +2 removes the optional uderscore preceding interface_ --]])
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-- tprint({target=target})
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end
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-- PARSE the interface part of the target
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-- the interface part is preceeded by prefix interface_
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if isEmptyString(target) or string.starts("interface_", target) or string.starts(target, "interface_") then
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local ifnames = interface.getIfNames()
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for _, n in pairs(ifnames) do
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local t = "interface_"..n
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if isEmptyString(target) or string.starts(t, target) or string.starts(target, t) then
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target_interfaces[n] = 1
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end
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end
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end
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local matches = {}
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for n,_ in pairs(target_interfaces) do
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interface.select(n)
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matches[n] = {}
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if host_info ~= nil then
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local matching_hosts = interface.findHost(hostinfo2hostkey(host_info))
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for addr, label in pairs(matching_hosts) do
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matches[n][addr] = label
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end
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end
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end
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local rsp_targets = {}
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local metrics = {"traffic_bps", "traffic_total_bytes", "allprotocols_bps", "allcategories_bps"}
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if host_info == nil then -- packets only for interfaces
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metrics[#metrics + 1] = "traffic_pps"
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metrics[#metrics + 1] = "traffic_total_packets"
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end
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for _, metric in pairs(metrics) do
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for n, hosts in pairs(matches) do
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local interface_series = "interface_"..n.."_"..metric
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for addr, label in pairs(hosts) do
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local host_series = "host_"..addr
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rsp_targets[#rsp_targets + 1] = host_series.."_"..interface_series
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end
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if host_info == nil then
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rsp_targets[#rsp_targets + 1] = interface_series
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end
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end
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end
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-- tprint({matches=matches, rsp_targets=rsp_targets})
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print(json.encode(rsp_targets, nil))
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end
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