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https://github.com/ntop/ntopng.git
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86 lines
No EOL
2.1 KiB
Lua
86 lines
No EOL
2.1 KiB
Lua
--
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-- (C) 2020 - ntop.org
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--
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local 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 json = require("dkjson")
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local http_lint = require("http_lint")
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local REDIS_KEY = "ntopng.prefs.%s.table.%s.columns"
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---Report an error message for the developer
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---@param msg string
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local function reportError(msg)
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print(json.encode({ message = msg, success = false }))
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end
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local function get_username()
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local username = _SESSION["user"] or ''
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if (isNoLoginUser()) then username = 'no_login' end
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return username
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end
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---Save the columns visibility inside Redis
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---@param table_name string The HTML table id
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---@param columns string String containing ids separeted by comma
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local function save_column_preferences(table_name, columns)
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-- avoid the save of nil value
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if columns == nil then return end
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local key = string.format(REDIS_KEY, get_username(), table_name)
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local cols = split(columns, ",")
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ntop.setPref(key, json.encode(cols))
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end
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---Load saved column visibility from Redis
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---@param table_name string The HTML table id
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---@return table
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local function load_saved_column_preferences(table_name)
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local key = string.format(REDIS_KEY, get_username(), table_name)
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local columns = ntop.getPref(key)
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if isEmptyString(columns) then
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return { -1 }
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end
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return json.decode(columns)
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end
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local result = {success = true, message = nil, columns = nil}
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local action = _GET["action"] or _POST["action"]
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local table_name = _GET["table"] or _POST["table"]
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sendHTTPContentTypeHeader('application/json')
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if isEmptyString(table_name) then
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reportError("The table param cannot be empty!")
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return
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end
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if action == "load" then
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result.columns = load_saved_column_preferences(table_name)
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result.message = "Columns loaded."
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elseif action == "save" then
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local columns = _POST["columns"] or ''
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save_column_preferences(table_name, columns)
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result.message = "Columns visibility saved."
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else
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reportError("Invalid action. The action can be 'load' or 'save'.")
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return
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end
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print(json.encode(result)) |