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Use jdkson to produce JSON in get_host_data.lua

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Implements #2331
This commit is contained in:
Simone Mainardi 2019-01-24 14:59:54 +01:00
parent d21e8d6f3e
commit 932d400a30
1 changed files with 35 additions and 41 deletions
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76
scripts/lua/get_host_data.lua
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@ -2,9 +2,10 @@
-- (C) 2013-18 - ntop.org
--
dirs = ntop.getDirs()
local dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local json = require "dkjson"
sendHTTPHeader('application/json')
@ -12,7 +13,7 @@ function getNetworkStats(network)
local hosts_stats = interface.getHostsInfo()
hosts_stats = hosts_stats["hosts"]
my_network = nil
local my_network
for key, value in pairs(hosts_stats) do
h = hosts_stats[key]
@ -50,17 +51,11 @@ function getNetworkStats(network)
return(my_network)
end
local host_info = url2hostinfo(_GET)
-- sendHTTPHeader('application/json')
interface.select(ifname)
host_info = url2hostinfo(_GET)
criteria = _GET["criteria"]
local criteria = _GET["criteria"]
if(criteria == nil) then criteria = "" end
interface.select(ifname)
if(host_info["host"] ~= nil) then
if(string.contains(host_info["host"], "/")) then
-- This is a network
@ -72,65 +67,64 @@ else
host = interface.getAggregatedHostInfo(host_info["host"])
end
local res = {}
if(host == nil) then
print('{}')
else
print('{')
now = os.time()
if host then
local now = os.time()
-- Get from redis the throughput type bps or pps
throughput_type = getThroughputType()
local throughput_type = getThroughputType()
--tprint(host)
res["column_since"] = secondsToTime(now-host["seen.first"]+1)
res["column_last"] = secondsToTime(now-host["seen.last"]+1)
res["column_traffic"] = bytesToSize(host["bytes.sent"]+host["bytes.rcvd"])
print("\"column_since\" : \"" .. secondsToTime(now-host["seen.first"]+1) .. "\", ")
print("\"column_last\" : \"" .. secondsToTime(now-host["seen.last"]+1) .. "\", ")
print("\"column_traffic\" : \"" .. bytesToSize(host["bytes.sent"]+host["bytes.rcvd"]).. "\", ")
local label, fnctn = label2criteriakey(criteria)
label, fnctn = label2criteriakey(criteria)
c = host.criteria
if(c ~= nil) then print("\"column_"..criteria.."\" : \"" .. fnctn(c[label]).. "\", ") end
local c = host.criteria
if(c ~= nil) then
res["column_"..criteria..""] = fnctn(c[label])
end
if((host["throughput_trend_"..throughput_type] ~= nil)
and (host["throughput_trend_"..throughput_type] > 0)) then
local res_thpt
if(throughput_type == "pps") then
print ("\"column_thpt\" : \"" .. pktsToSize(host["throughput_bps"]).. " ")
res_thpt = pktsToSize(host["throughput_bps"])
else
print ("\"column_thpt\" : \"" .. bitsToSize(8*host["throughput_bps"]).. " ")
res_thpt = bitsToSize(8*host["throughput_bps"])
end
if(host["throughput_"..throughput_type] > host["last_throughput_"..throughput_type]) then
print("<i class='fa fa-arrow-up'></i>")
res_thpt = res_thpt .. " <i class='fa fa-arrow-up'></i>"
elseif(host["throughput_"..throughput_type] < host["last_throughput_"..throughput_type]) then
print("<i class='fa fa-arrow-down'></i>")
res_thpt = res_thpt .. " <i class='fa fa-arrow-down'></i>"
else
print("<i class='fa fa-minus'></i>")
res_thpt = res_thpt .. " <i class='fa fa-minus'></i>"
end
print("\",")
res["column_thpt"] = res_thpt
else
print ("\"column_thpt\" : \"0 "..throughput_type.."\",")
res["column_thpt"] = "0 "..throughput_type
end
print ("\"column_num_flows\" : \""..host["active_flows.as_client"]+host["active_flows.as_server"].."\",")
res["column_num_flows"] = host["active_flows.as_client"] + host["active_flows.as_server"]
if isBridgeInterface(interface.getStats()) then
print ("\"column_num_dropped_flows\" : \""..(host["flows.dropped"] or 0).."\",")
res["column_num_dropped_flows"] = (host["flows.dropped"] or 0)
end
print ("\"column_alerts\" : \"")
if((host["num_alerts"] ~= nil) and (host["num_alerts"] > 0)) then
print(""..host["num_alerts"].."\",")
res["column_alerts"] = host["num_alerts"]
else
print("0\",")
res["column_alerts"] = 0
end
sent2rcvd = round((host["bytes.sent"] * 100) / (host["bytes.sent"]+host["bytes.rcvd"]), 0)
if(sent2rcvd == nil) then sent2rcvd = 0 end
print ("\"column_breakdown\" : \"<div class='progress'><div class='progress-bar progress-bar-warning' style='width: "
.. sent2rcvd .."%;'>Sent</div><div class='progress-bar progress-bar-info' style='width: " .. (100-sent2rcvd) .. "%;'>Rcvd</div></div>")
print("\" } ")
res["column_breakdown"] = "<div class='progress'><div class='progress-bar progress-bar-warning' style='width: "
.. sent2rcvd .."%;'>Sent</div><div class='progress-bar progress-bar-info' style='width: " .. (100-sent2rcvd) .. "%;'>Rcvd</div></div>"
end
print(json.encode(res))