storage

README

storage

Usage

local storage = require("storage")

-- storage.open
local s, err = storage.open("./test/db.json")
if err then error(err) end

-- storage:set(): key, value, ttl (default = 60s)
local err = s:set("key", {"one", "two", 1}, 10)
if err then error(err) end

-- storage:get()
local value, found, err = s:get("key")
if err then error(err) end
if not found then error("must be found") end
-- value == {"one", "two", 1}

-- storage:set(): override with set max ttl
local err = s:set("key", "override", nil)
local value, found, err = s:get("key")
if not(value == "override") then error("must be found") end

-- storage:keys()
local list = s:keys()
-- list == {"key"}

-- storage:dump()
local dump, err = s:dump()
if err then error(err) end
-- list == {"key" = "override"}

Documentation

Overview

Package storage implements persist storage with ttl for to save and share data between differents lua.LState.

Example (Package)

storage.open(), storage_ud:get(), storage_ud:set()

state := lua.NewState()
Preload(state)
inspect.Preload(state)
time.Preload(state)
source := `
local storage = require("storage")
local inspect = require("inspect")

local s, err = storage.open("./test/db-example.json")
if err then error(err) end

local err = s:set("key", {"one", "two", 1}, 10)
if err then error(err) end

local value, found, err = s:get("key")
if err then error(err) end
if not found then error("must be found") end

print(inspect(value, {newline="", indent=""}))

local list = s:keys()
print(#list == 1)

local dump, err = s:dump()
if err then error(err) end
print(inspect(dump, {newline="", indent=""}))

os.remove("./test/db-example.json")
`
if err := state.DoString(source); err != nil {
	log.Fatal(err.Error())
}

Output:

{ "one", "two", 1 }
true
{key = { "one", "two", 1 }}

Index

• func Close(L *lua.LState) int
• func Dump(L *lua.LState) int
• func Get(L *lua.LState) int
• func Keys(L *lua.LState) int
• func Loader(L *lua.LState) int
• func New(L *lua.LState) int
• func Preload(L *lua.LState)
• func Set(L *lua.LState) int
• func Sync(L *lua.LState) int

Examples

• Package (Package)

Functions

func Close

func Close(L *lua.LState) int

Close(): lua storage_ud:close() return err

func Dump

func Dump(L *lua.LState) int

Dump(): lua storage_ud:dump() return (table, error)

func Get

func Get(L *lua.LState) int

Get(): lua storage_ud:set(key) returns (value, bool, err)

func Keys

func Keys(L *lua.LState) int

Keys(): lua storage_ud:list_keys() return table

func Loader

func Loader(L *lua.LState) int

Loader is the module loader function.

func New

func New(L *lua.LState) int

New(): lua storage.new(filename) returns (storage_ud, err)

func Preload

func Preload(L *lua.LState)

Preload adds storage to the given Lua state's package.preload table. After it has been preloaded, it can be loaded using require:

local storage = require("storage")

func Set

func Set(L *lua.LState) int

Set(): lua storage_ud:set(key, value, ttl) return err

func Sync

func Sync(L *lua.LState) int

Sync(): lua storage_ud:sync() return err