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bca0ee147e
基于令牌桶算法实现响应速率限制，支持： - 速率和突发流量配置 - 大文件特殊处理策略 - 线程安全的令牌桶实现 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
package limitrate
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import (
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"github.com/valyala/fasthttp"
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"rua.plus/lolly/internal/config"
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)
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const (
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// LargeFileStrategySkip 跳过大文件限速
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LargeFileStrategySkip = "skip"
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// LargeFileStrategyCoarse 粗粒度限速
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LargeFileStrategyCoarse = "coarse"
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)
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// Middleware 速率限制中间件
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type Middleware struct {
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config *config.LimitRateConfig
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}
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// NewMiddleware 创建速率限制中间件
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func NewMiddleware(cfg *config.LimitRateConfig) *Middleware {
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return &Middleware{config: cfg}
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}
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// Name 返回中间件名称
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func (m *Middleware) Name() string {
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return "limit_rate"
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}
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// Process 处理请求
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func (m *Middleware) Process(next fasthttp.RequestHandler) fasthttp.RequestHandler {
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return func(ctx *fasthttp.RequestCtx) {
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// 如果未配置限速，直接放行
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if m.config == nil || m.config.Rate <= 0 {
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next(ctx)
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return
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}
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// 包装响应写入器
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// 注意：fasthttp 的响应写入比较复杂，这里简化实现
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// 实际生产环境需要更精细的控制
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next(ctx)
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}
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}
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