cjson = require "cjson"
ngx. req. read_body()                                       -- explicitly read the req body
local data = ngx. req. get_body_data()
local jsonBody = cjson. decode(data);
if data then
  local reqs = { }
  --ngx. say("body data:")

  for key, value in pairs(jsonBody) do
    --ngx.print(key)
    --ngx.print(value.url)
    local param = { }					
    param["args"] = value.query

    local method = ngx.HTTP_GET
    if value.method == "POST" then
      method = ngx.HTTP_POST
      param["body"] = value.body
    end
    param["method"] = method

    local reqParam = { }
    reqParam[1] = value.url
    reqParam[2] = param

    table.insert(reqs, reqParam)
  end

  local resps = {ngx.location.capture_multi(reqs)}

  local reponseData = {}
  -- loop over the responses table
  for key, value in pairs(resps) do
    -- process the response table "resp"
    -- ngx.print(key)
    -- ngx.print(value.body)

    --ngx.say(jsonBody[key].url)

    local theUrl = jsonBody[key].url
    reponseData[theUrl] = value.body 
  end


  local responseJson = cjson.encode(reponseData)

  ngx.header["Content-Type"] = "application/json; charset=UTF-8"

  ngx.say(responseJson)
end