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--
-- (C) 2019-22 - ntop.org
--
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local format_utils = require("format_utils")
local json = require("dkjson")
sendHTTPContentTypeHeader('application/json')
-- ################################################
local currentPage = _GET["currentPage"]
local perPage = _GET["perPage"]
local sortColumn = _GET["sortColumn"]
local sortOrder = _GET["sortOrder"]
local sortPrefs = "system_interfaces_data"
-- ################################################
if isEmptyString(sortColumn) or sortColumn == "column_" then
sortColumn = getDefaultTableSort(sortPrefs)
else
if((sortColumn ~= "column_")
and (sortColumn ~= "")) then
tablePreferences("sort_"..sortPrefs, sortColumn)
end
end
if isEmptyString(_GET["sortColumn"]) then
sortOrder = getDefaultTableSortOrder(sortPrefs, true)
end
if((_GET["sortColumn"] ~= "column_")
and (_GET["sortColumn"] ~= "")) then
tablePreferences("sort_order_"..sortPrefs, sortOrder, true)
end
if(currentPage == nil) then
currentPage = 1
else
currentPage = tonumber(currentPage)
end
if(perPage == nil) then
perPage = getDefaultTableSize()
else
perPage = tonumber(perPage)
tablePreferences("rows_number", perPage)
end
local sOrder = ternary(sortOrder == "asc", asc_insensitive, rev_insensitive)
local to_skip = (currentPage-1) * perPage
-- ###########################################
local function get_drops_pct(ifstats)
local drops_pct = 0
if ifstats.stats_since_reset.drops > 0 or ifstats.stats_since_reset.packets > 0 then
drops_pct = round(ifstats.stats_since_reset.drops / (ifstats.stats_since_reset.drops + ifstats.stats_since_reset.packets) * 100, 2)
end
return drops_pct
end
-- ###########################################
local function drops_bar(fill_pct)
local code = [[
<div class="progress position-relative">
<div class="progress-bar bg-danger" role="progressbar" style="width: ]]..fill_pct..[[%;" aria-valuenow="]]..fill_pct..[[" aria-valuemin="0" aria-valuemax="100"></div>
<small class="justify-content-center d-flex position-absolute w-100">]]..fill_pct..[[%</small>
</div>
]]
return code
end
-- ################################################
local ifaces_stats = {}
for _, iface in pairs(interface.getIfNames()) do
interface.select(iface)
ifaces_stats[iface] = interface.getStats()
end
local totalRows = 0
local sort_to_key = {}
for iface, ifstats in pairs(ifaces_stats) do
if(sortColumn == "column_engaged_alerts") then
sort_to_key[iface] = ifstats.num_alerts_engaged
elseif(sortColumn == "column_alerted_flows") then
sort_to_key[iface] = ifstats.num_alerted_flows
elseif(sortColumn == "column_local_hosts") then
sort_to_key[iface] = ifstats.stats.local_hosts
elseif(sortColumn == "column_remote_hosts") then
sort_to_key[iface] = ifstats.stats.hosts
elseif(sortColumn == "column_devices") then
sort_to_key[iface] = ifstats.stats.devices
elseif(sortColumn == "column_flows") then
sort_to_key[iface] = ifstats.stats.flows
elseif(sortColumn == "column_traffic") then
sort_to_key[iface] = ifstats.stats_since_reset.bytes
elseif(sortColumn == "column_packets") then
sort_to_key[iface] = ifstats.stats_since_reset.packets
elseif(sortColumn == "column_drops") then
sort_to_key[iface] = get_drops_pct(ifstats)
elseif(sortColumn == "column_name") then
sort_to_key[iface] = getHumanReadableInterfaceName(getInterfaceName(ifstats.id))
else
sort_to_key[iface] = ifstats.id
end
totalRows = totalRows + 1
::continue::
end
-- ################################################
local res = {}
local i = 0
for key in pairsByValues(sort_to_key, sOrder) do
if i >= to_skip + perPage then
break
end
if i >= to_skip then
local record = {}
local ifstats = ifaces_stats[key]
local remote_hosts = ifstats.stats.hosts - ifstats.stats.local_hosts
local drops_pct = get_drops_pct(ifstats)
record["column_ifid"] = string.format("%i", ifstats.id)
record["column_engaged_alerts"] = ternary(ifstats.num_alerts_engaged > 0, format_utils.formatValue(ifstats.num_alerts_engaged), '')
record["column_alerted_flows"] = ternary(ifstats.num_alerted_flows > 0, format_utils.formatValue(ifstats.num_alerted_flows), '')
record["column_local_hosts"] = ternary(ifstats.stats.local_hosts > 0, format_utils.formatValue(ifstats.stats.local_hosts), '')
record["column_remote_hosts"] = ternary(remote_hosts > 0, format_utils.formatValue(remote_hosts), '')
record["column_devices"] = ternary(ifstats.stats.devices > 0, format_utils.formatValue(ifstats.stats.devices), '')
record["column_flows"] = ternary(ifstats.stats.flows > 0, format_utils.formatValue(ifstats.stats.flows), '')
record["column_traffic"] = ternary(ifstats.stats_since_reset.bytes > 0, format_utils.bytesToSize(ifstats.stats_since_reset.bytes), '')
record["column_packets"] = ternary(ifstats.stats_since_reset.packets > 0, format_utils.formatPackets(ifstats.stats_since_reset.packets), '')
record["column_drops"] = ternary(drops_pct > 0, drops_bar(drops_pct), '')
record["column_name"] = string.format('<a href="'..ntop.getHttpPrefix()..'/lua/if_stats.lua?ifid=%i">%s</a>', ifstats.id, getHumanReadableInterfaceName(getInterfaceName(ifstats.id)))
res[#res + 1] = record
end
i = i + 1
end
-- ################################################
local result = {}
result["perPage"] = perPage
result["currentPage"] = currentPage
result["totalRows"] = totalRows
result["data"] = res
result["sort"] = {{sortColumn, sortOrder}}
print(json.encode(result))
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