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42 lines
895 B
42 lines
895 B
package middlewares
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import (
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"net/http"
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"github.com/throttled/throttled/store/memstore"
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"github.com/throttled/throttled/v2"
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)
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type RateLimiterMiddleware struct {
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rateLimiter throttled.HTTPRateLimiter
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}
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func (middleware RateLimiterMiddleware) Middleware(next http.Handler) http.Handler {
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return middleware.rateLimiter.RateLimit(next)
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}
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func CreateRateLimiterMiddleware(requestsPerMinute int) (*RateLimiterMiddleware, error) {
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store, err := memstore.New(65536)
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if err != nil {
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return nil, err
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}
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quota := throttled.RateQuota{
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MaxRate: throttled.PerMin(requestsPerMinute),
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}
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rateLimiter, err := throttled.NewGCRARateLimiter(store, quota)
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if err != nil {
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return nil, err
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}
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httpRateLimiter := throttled.HTTPRateLimiter{
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RateLimiter: rateLimiter,
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VaryBy: &throttled.VaryBy{Path: true},
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}
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return &RateLimiterMiddleware{
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rateLimiter: httpRateLimiter,
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}, nil
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}
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