ntopng/scripts/lua/modules/callback_utils.lua
2017-03-04 12:39:48 +01:00

118 lines
4.5 KiB
Lua

--
-- (C) 2017 - ntop.org
--
dirs = ntop.getDirs()
package.path = dirs.installdir .. "/scripts/lua/modules/?.lua;" .. package.path
require "lua_utils"
local callback_utils = {}
-- ########################################################
-- Iterates available interfaces, exclusing PCAP interfaces.
-- Each valid interface is select-ed and passed to the callback.
function callback_utils.foreachInterface(ifnames, verbose, callback)
for _,_ifname in pairs(ifnames) do
interface.select(_ifname)
ifstats = interface.getStats()
if(verbose) then print("\n["..__FILE__()..":"..__LINE__().."]===============================\n["..__FILE__()..":"..__LINE__().."] Processing interface " .. _ifname .. " ["..ifstats.id.."]\n") end
if((ifstats.type ~= "pcap dump") and (ifstats.type ~= "unknown")) then
callback(_ifname, ifstats, verbose)
end
end
end
-- ########################################################
-- Iterates each active host on the ifname interface.
-- Each host is passed to the callback with some more information.
function callback_utils.foreachHost(ifname, verbose, callback)
local hostbase
interface.select(ifname)
hosts_stats = interface.getLocalHostsInfo(false)
hosts_stats = hosts_stats["hosts"]
for hostname, hoststats in pairs(hosts_stats) do
local host = interface.getHostInfo(hostname)
if(host == nil) then
if(verbose) then print("\n["..__FILE__()..":"..__LINE__().."] NULL host "..hostname.." !!!!\n") end
else
if(verbose) then
print ("["..__FILE__()..":"..__LINE__().."] [" .. hostname .. "][local: ")
print(tostring(host["localhost"]))
print("]" .. (hoststats["bytes.sent"]+hoststats["bytes.rcvd"]) .. "]\n")
end
if(host.localhost) then
local keypath = getPathFromKey(hostname)
hostbase = fixPath(dirs.workingdir .. "/" .. ifstats.id .. "/rrd/" .. keypath)
if(not(ntop.exists(hostbase))) then
if(verbose) then print("\n["..__FILE__()..":"..__LINE__().."] Creating base directory ", hostbase, '\n') end
ntop.mkdir(hostbase)
end
else
hostbase = nil
end
callback(hostname--[[name of the host]], host--[[hostinfo]], hoststats, hostbase--[[base RRD host directory]], verbose)
end
end
end
-- ########################################################
-- Creates RRD with local hosts activity.
-- This is designed to be used as the *callback* parameter of callback_utils.foreachHost
function callback_utils.saveLocalHostsActivity(hostname, host, hoststats, hostbase, verbose)
if host.localhost then
local actStats = interface.getHostActivity(hostname)
if actStats then
local hostsbase = fixPath(hostbase .. "/activity")
if(not(ntop.exists(hostsbase))) then
if(verbose) then print("\n["..__FILE__()..":"..__LINE__().."] Creating host activity directory ", hostsbase, '\n') end
ntop.mkdir(hostsbase)
end
for act, val in pairs(actStats) do
name = fixPath(hostsbase .. "/" .. act .. ".rrd")
-- up, down, background bytes
createActivityRRDCounter(name, verbose)
ntop.rrd_update(name, "N:"..tolongint(val.up) .. ":" .. tolongint(val.down) .. ":" .. tolongint(val.background))
if(verbose) then
print("["..__FILE__()..":"..__LINE__().."] Updating RRD [".. ifstats.name .."] "..name..' ['..val.up.."/"..val.down.."/"..val.background..']\n')
end
end
end
end
end
-- ########################################################
function callback_utils.harverstExpiredMySQLFlows(ifname, mysql_retention, verbose)
interface.select(ifname)
local sql = "DELETE FROM flowsv4 where FIRST_SWITCHED < "..mysql_retention
sql = sql.." AND (INTERFACE_ID = "..getInterfaceId(ifname)..")"
sql = sql.." AND (NTOPNG_INSTANCE_NAME='"..ntop.getPrefs()["instance_name"].."' OR NTOPNG_INSTANCE_NAME IS NULL)"
interface.execSQLQuery(sql)
if(verbose) then io.write(sql.."\n") end
sql = "DELETE FROM flowsv6 where FIRST_SWITCHED < "..mysql_retention
sql = sql.." AND (INTERFACE_ID = "..getInterfaceId(ifname)..")"
sql = sql.." AND (NTOPNG_INSTANCE_NAME='"..ntop.getPrefs()["instance_name"].."' OR NTOPNG_INSTANCE_NAME IS NULL)"
interface.execSQLQuery(sql)
if(verbose) then io.write(sql.."\n") end
end
-- ########################################################
return callback_utils