local mongo = require "resty.mongol"
conn = mongo:new()
conn:set_timeout(1000)
ok, err = conn:connect()
if not ok then
ngx.say("connect failed: "..err)
end
local db = conn:new_db_handle ( "test" )
col = db:get_col("test")
r = col:find_one({name="dog"})
ngx.say(r["name"])