xfy
7a66e350f0
- 基于 gopher-lua 实现类似 OpenResty 的脚本嵌入能力 - LuaEngine: server 级单 LState + 请求级临时协程 - LuaContext: 请求上下文，变量存储和阶段管理 - LuaCoroutine: 沙箱隔离，Yield/Resume 循环，执行超时 - CodeCache: 字节码缓存，LRU 淘汰 + TTL 过期 - 新增 testify 用于测试断言 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
126 lines
2.5 KiB
Go
126 lines
2.5 KiB
Go
// Package lua 提供 Lua 脚本嵌入能力
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package lua
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import (
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"github.com/valyala/fasthttp"
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)
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// LuaContext 请求级 Lua 上下文
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type LuaContext struct {
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// 引擎引用
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Engine *LuaEngine
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// 协程
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Coroutine *LuaCoroutine
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// HTTP 请求上下文
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RequestCtx *fasthttp.RequestCtx
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// 当前阶段
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Phase Phase
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// 变量存储（ngx.var 实现）
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Variables map[string]string
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// 输出缓冲
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OutputBuffer []byte
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// 是否已退出
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Exited bool
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}
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// NewContext 创建请求上下文
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func NewContext(engine *LuaEngine, req *fasthttp.RequestCtx) *LuaContext {
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return &LuaContext{
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Engine: engine,
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RequestCtx: req,
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Variables: make(map[string]string),
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Phase: PhaseInit,
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}
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}
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// InitCoroutine 初始化协程
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func (c *LuaContext) InitCoroutine() error {
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coro, err := c.Engine.NewCoroutine(c.RequestCtx)
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if err != nil {
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return err
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}
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c.Coroutine = coro
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return c.Coroutine.SetupSandbox()
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}
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// Execute 执行 Lua 脚本
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func (c *LuaContext) Execute(script string) error {
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if c.Coroutine == nil {
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if err := c.InitCoroutine(); err != nil {
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return err
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}
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}
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return c.Coroutine.Execute(script)
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}
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// ExecuteFile 执行文件脚本
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func (c *LuaContext) ExecuteFile(path string) error {
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if c.Coroutine == nil {
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if err := c.InitCoroutine(); err != nil {
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return err
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}
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}
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return c.Coroutine.ExecuteFile(path)
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}
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// SetPhase 设置当前阶段
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func (c *LuaContext) SetPhase(phase Phase) {
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c.Phase = phase
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}
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// GetPhase 获取当前阶段
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func (c *LuaContext) GetPhase() Phase {
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return c.Phase
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}
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// GetVariable 获取变量
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func (c *LuaContext) GetVariable(name string) (string, bool) {
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val, ok := c.Variables[name]
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return val, ok
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}
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// SetVariable 设置变量
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func (c *LuaContext) SetVariable(name, value string) {
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c.Variables[name] = value
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}
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// Write 输出内容
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func (c *LuaContext) Write(data []byte) {
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c.OutputBuffer = append(c.OutputBuffer, data...)
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}
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// Say 输出内容并换行
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func (c *LuaContext) Say(data string) {
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c.OutputBuffer = append(c.OutputBuffer, data...)
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c.OutputBuffer = append(c.OutputBuffer, '\n')
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}
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// Exit 退出请求处理
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func (c *LuaContext) Exit(code int) {
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c.Exited = true
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c.RequestCtx.SetStatusCode(code)
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}
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// Release 释放资源
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func (c *LuaContext) Release() {
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if c.Coroutine != nil {
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c.Coroutine.Close()
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c.Coroutine = nil
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}
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c.Variables = nil
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c.OutputBuffer = nil
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}
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// FlushOutput 刷新输出到响应
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func (c *LuaContext) FlushOutput() {
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if len(c.OutputBuffer) > 0 && c.RequestCtx != nil {
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c.RequestCtx.Write(c.OutputBuffer)
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c.OutputBuffer = c.OutputBuffer[:0]
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}
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} |