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feat: 下载限速

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This commit is contained in:
yokowu
2025-07-18 10:18:36 +08:00
parent 79c451ac46
commit ec8ca31a6b
3 changed files with 14 additions and 22 deletions
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26
backend/internal/user/handler/v1/user.go
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@@ -11,6 +11,7 @@ import (
"time"
"github.com/GoYoko/web"
"golang.org/x/time/rate"
"github.com/chaitin/MonkeyCode/backend/config"
"github.com/chaitin/MonkeyCode/backend/consts"
@@ -33,9 +34,9 @@ type UserHandler struct {
session *session.Session
logger *slog.Logger
cfg *config.Config
limitCh chan struct{}
vsixCache map[string]*CacheEntry // 缓存处理后的vsix文件
cacheMu sync.RWMutex // 缓存读写锁
vsixCache map[string]*CacheEntry
cacheMu sync.RWMutex
limiter *rate.Limiter
}
func NewUserHandler(
@@ -54,8 +55,8 @@ func NewUserHandler(
logger: logger,
cfg: cfg,
euse: euse,
limitCh: make(chan struct{}, cfg.Extension.Limit),
vsixCache: make(map[string]*CacheEntry),
limiter: rate.NewLimiter(rate.Every(time.Duration(cfg.Extension.LimitSecond)*time.Second), cfg.Extension.Limit),
}
w.GET("/api/v1/static/vsix/:version", web.BaseHandler(u.VSIXDownload))
@@ -130,27 +131,22 @@ func (h *UserHandler) cleanExpiredCache() {
// @Produce octet-stream
// @Router /api/v1/static/vsix [get]
func (h *UserHandler) VSIXDownload(c *web.Context) error {
h.limitCh <- struct{}{}
defer func() {
<-h.limitCh
}()
if !h.limiter.Allow() {
return c.String(http.StatusTooManyRequests, "Too Many Requests")
}
v, err := h.euse.GetByVersion(c.Request().Context(), c.Param("version"))
if err != nil {
return err
}
// 生成缓存键
cacheKey := h.generateCacheKey(v.Version, h.cfg.BaseUrl)
// 先检查缓存
h.cacheMu.RLock()
if entry, exists := h.vsixCache[cacheKey]; exists {
// 检查缓存是否过期（1小时）
if time.Since(entry.createdAt) < time.Hour {
h.cacheMu.RUnlock()
// 从缓存返回数据
disposition := fmt.Sprintf("attachment; filename=monkeycode-%s.vsix", v.Version)
c.Response().Header().Set("Content-Type", "application/octet-stream")
c.Response().Header().Set("Content-Disposition", disposition)
@@ -162,15 +158,11 @@ func (h *UserHandler) VSIXDownload(c *web.Context) error {
}
h.cacheMu.RUnlock()
// 缓存未命中或已过期，需要重新生成
// 使用buffer来捕获生成的数据
var buf bytes.Buffer
if err := vsix.ChangeVsixEndpoint(v.Path, "extension/package.json", h.cfg.BaseUrl, &buf); err != nil {
return err
}
// 将结果存入缓存
data := buf.Bytes()
h.cacheMu.Lock()
h.vsixCache[cacheKey] = &CacheEntry{
@@ -179,10 +171,8 @@ func (h *UserHandler) VSIXDownload(c *web.Context) error {
}
h.cacheMu.Unlock()
// 异步清理过期缓存
go h.cleanExpiredCache()
// 返回数据给客户端
disposition := fmt.Sprintf("attachment; filename=monkeycode-%s.vsix", v.Version)
c.Response().Header().Set("Content-Type", "application/octet-stream")
c.Response().Header().Set("Content-Disposition", disposition)