wrc lua script with csv

lua-csv.lua

local csv = require("csv")
local f = csv.open("device-table2.csv", {['header'] = true})
local columns = {"id", "free_storage_in_byte", "used_storage_in_byte"}
local parameters = {}
local counter = 0

for fields in f:lines() do
    perRowCondition = {}    
    for index, value in pairs(fields) do
        for _,v in pairs(columns) do
            if v == index then
                perRowCondition[v] = v .. "=".. value 
            end
        end
    end
    parameters[#parameters +1] = perRowCondition     
end

 request = function()
    counter = counter +1
    if counter >= #parameters then return end
     parameter = parameters[counter]
    local path = "/device/assets?" .. parameter.id .. "&" .. parameter.free_storage_in_byte .. "&" .. parameter.used_storage_in_byte
    return wrk.format("GET",path)
 end