NodeMCU and InfluxDB

influxdb.lua

-- Your access point's SSID and password
local SSID = "greenhouse"
local SSID_PASSWORD = "senhasupersecreta"
local DEVICE = "device001"
local temperature = 27.5
 
-- configure ESP as a station
wifi.setmode(wifi.STATION)
wifi.sta.config(SSID,SSID_PASSWORD)
wifi.sta.autoconnect(1)
 
local HOST = "192.168.13.91" 
local URI = "/write?db=greenhouse"
 
function build_post_request(host, uri, data_table)
 
     local data = data_table.Data_type .. ",device=" .. data_table.Device .. " " .. "value=" .. data_table.Value
     
     --for param,value in pairs(data_table) do
    --      data = data .. param.."="..value.."&"
    -- end
    print(data)
 
     request = "POST "..uri.." HTTP/1.1\r\n"..
     "Host: "..host.."\r\n"..
     "Connection: close\r\n"..
     "Content-Type: application/x-www-form-urlencoded\r\n"..
     "Content-Length: "..string.len(data).."\r\n"..
     "\r\n"..
     data
 
     print(request)
     
     return request
end
 
local function display(sck,response)
     print(response)
end
 
-- When using send_sms: the "from" number HAS to be your twilio number.
-- If you have a free twilio account the "to" number HAS to be your twilio verified number.
-- The numbers MUST include the country code.
-- DO NOT add the "+" sign.
local function send_data(data_type,device,value)

     local data = {
      Data_type = data_type,
      Device = device,
      Value = value
     }
     
     socket = net.createConnection(net.TCP,0)
     socket:on("receive",display)
     socket:connect(8086,HOST)
 
     socket:on("connection",function(sck) 
       
          local post_request = build_post_request(HOST,URI,data)
          sck:send(post_request)
     end)     
end
 
function check_wifi()
 local ip = wifi.sta.getip()
 
 if(ip==nil) then
   print("Connecting...")
 else
  tmr.stop(0)
  print("Connected to AP!")
  print(ip)
  --send_data("15551234567","12223456789","Hello from your ESP8266") 
  
  local t, h = getTempHumi()
    
  print("Temp:"..t .." C\n")
  print("Humi:"..h .." RH\n")

  send_data("temperature", DEVICE, t)
  send_data("humidity", DEVICE, h)

  tmr.alarm(0,10000,1,check_wifi)

 end
 
end
 
tmr.alarm(0,2000,1,check_wifi)

function getTempHumi()
    pin = 4
    local status,temp,humi,temp_decimial,humi_decimial = dht.read(pin)
    if( status == dht.OK ) then
    -- Float firmware using this example
      print("DHT Temperature:"..temp..";".."Humidity:"..humi)
    elseif( status == dht.ERROR_CHECKSUM ) then
      print( "DHT Checksum error." );
    elseif( status == dht.ERROR_TIMEOUT ) then
      print( "DHT Time out." );
    end
    return temp, humi
end

thanks @jeanbrito, this file was a source of inspiration for this project -> https://github.com/wnasich/nodemcu-collector