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105 lines
2.5 KiB
Lua
105 lines
2.5 KiB
Lua
--
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-- (C) 2013-20 - 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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local alert_utils = require "alert_utils"
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require "flow_utils"
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local alert_consts = require "alert_consts"
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local format_utils = require "format_utils"
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local json = require "dkjson"
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local rest_utils = require("rest_utils")
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--
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-- Read alerts data as timeseries (number of alerts per hour)
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-- Example: curl -u admin:admin -d '{"ifid": "6", "status": "historical-flows", "epoch_begin": 1590226522, "epoch_end": 1590485722}' http://localhost:3000/lua/rest/v1/get/alert/ts.lua
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--
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-- NOTE: in case of invalid login, no error is returned but redirected to login
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--
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sendHTTPHeader('application/json')
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local rc = rest_utils.consts_ok
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local res = {}
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local ifid = _GET["ifid"]
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local what = _GET["status"] -- historical, historical-flows
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local epoch_begin = _GET["epoch_begin"]
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local epoch_end = _GET["epoch_end"]
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local alert_type = _GET["alert_type"]
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local alert_severity = _GET["alert_severity"]
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if isEmptyString(ifid) then
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rc = rest_utils.consts_invalid_interface
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print(rest_utils.rc(rc))
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return
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end
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interface.select(ifid)
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if isEmptyString(what) then
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rc = rest_utils.consts_invalid_args
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print(rest_utils.rc(rc))
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return
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end
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if isEmptyString(epoch_begin) or isEmptyString(epoch_end) then
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rc = rest_utils.consts_invalid_args
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print(rest_utils.rc(rc))
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return
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end
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epoch_begin = tonumber(epoch_begin);
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epoch_end = tonumber(epoch_end);
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if epoch_end <= epoch_begin then
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rc = rest_utils.consts_invalid_args
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print(rest_utils.rc(rc))
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return
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end
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local hour_secs = 60*60
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local day_secs = 60*60*24
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-- Round begin to start of day
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epoch_begin = epoch_begin - (epoch_begin % day_secs)
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-- Round end to end of day
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epoch_end = epoch_end - (epoch_end % day_secs) + day_secs
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local days = (epoch_end - epoch_begin) / day_secs
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local engaged = false
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if what == "engaged" then
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engaged = true
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end
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local counters = alert_utils.getNumAlertsPerHour(what, epoch_begin, epoch_end, alert_type, alert_severity)
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if counters == nil then
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rc = rest_utils.consts_internal_error
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print(rest_utils.rc(rc))
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return
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end
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for day=1,days do
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local day_epoch = epoch_begin + ((day-1) * day_secs)
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res[day_epoch] = {}
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for hour=1,24 do
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res[day_epoch][hour] = 0
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end
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end
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local curr_epoch = epoch_begin
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for k,v in ipairs(counters) do
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local day_epoch = v.hour - (v.hour % day_secs)
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local hour = (v.hour - day_epoch) / hour_secs
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res[day_epoch][hour] = tonumber(v.count)
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end -- for
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print(rest_utils.rc(rc, res))
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