Revert "Add Host and SNI-based rate limiting"

This reverts commit 7f8e9bd39def730616a4c7d1d5f00ee6ca9ea76a.

2 files changed, 0 insertions, 94 deletions

diff --git a/internal/rate_limiting/http_handler.go b/internal/rate_limiting/http_handler.go
deleted file mode 100644
index d6341781..00000000
--- a/internal/rate_limiting/http_handler.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package rate_limiting
-
-import (
-	"crypto/tls"
-	"errors"
-	"net/http"
-
-	"gitlab.com/gitlab-org/gitlab-pages/internal/tlsconfig"
-)
-
-func (r *RateLimiting) LimitHostHandler(handler http.Handler) http.Handler {
-	fn := func(rw http.ResponseWriter, req *http.Request) {
-		if r.Allow(req.Host) {
-			handler.ServeHTTP(rw, req)
-			return
-		}
-
-		rw.WriteHeader(http.StatusTooManyRequests)
-	}
-
-	return http.HandlerFunc(fn)
-}
-
-func (r *RateLimiting) LimitServeTLS(handler tlsconfig.GetCertificateFunc) tlsconfig.GetCertificateFunc {
-	return func(ch *tls.ClientHelloInfo) (*tls.Certificate, error) {
-		if r.Allow(ch.ServerName) {
-			return handler(ch)
-		}
-
-		return nil, errors.New("rate limited")
-	}
-}
diff --git a/internal/rate_limiting/rate_limiting.go b/internal/rate_limiting/rate_limiting.go
deleted file mode 100644
index d69dd873..00000000
--- a/internal/rate_limiting/rate_limiting.go
+++ /dev/null
@@ -1,62 +0,0 @@
-package rate_limiting
-
-import (
-	"time"
-
-	"github.com/patrickmn/go-cache"
-	"golang.org/x/time/rate"
-)
-
-type rateLimit struct {
-	*rate.Limiter
-}
-
-type RateLimiting struct {
-	cache *cache.Cache
-
-	window time.Duration
-	limit  uint
-}
-
-func NewRateLimiting(window time.Duration, limit uint) *RateLimiting {
-	return &RateLimiting{
-		cache:  cache.New(window*2, window),
-		window: window,
-		limit:  limit,
-	}
-}
-
-func (r *RateLimiting) newRateLimiter() rateLimit {
-	// we divide a window by amount of requests
-	// the bucket is refilled every interval
-	// allowing to consume up to the defined `limit`
-	everyNs := r.window.Nanoseconds() / int64(r.limit)
-	every := time.Duration(everyNs)
-
-	return rateLimit{
-		rate.NewLimiter(rate.Every(every), int(r.limit)),
-	}
-}
-
-func (r *RateLimiting) findOrCreate(key string) rateLimit {
-	for {
-		// try to get existing item
-		if item, expiry, found := r.cache.GetWithExpiration(key); found {
-			// extend item window
-			if time.Until(expiry) > r.window {
-				r.cache.SetDefault(key, item)
-			}
-
-			return item.(rateLimit)
-		}
-
-		// add a new item
-		if rateLimiter := r.newRateLimiter(); r.cache.Add(key, rateLimiter, cache.DefaultExpiration) == nil {
-			return rateLimiter
-		}
-	}
-}
-
-func (r *RateLimiting) Allow(key string) bool {
-	return r.findOrCreate(key).Allow()
-}