add rate limiter

registry/limiter.go

@@ -0,0 +1,48 @@
+package registry
+
+import (
+	"github.com/go-gost/core/limiter"
+)
+
+type rlimiterRegistry struct {
+	registry
+}
+
+func (r *rlimiterRegistry) Register(name string, v limiter.RateLimiter) error {
+	return r.registry.Register(name, v)
+}
+
+func (r *rlimiterRegistry) Get(name string) limiter.RateLimiter {
+	if name != "" {
+		return &rlimiterWrapper{name: name, r: r}
+	}
+	return nil
+}
+
+func (r *rlimiterRegistry) get(name string) limiter.RateLimiter {
+	if v := r.registry.Get(name); v != nil {
+		return v.(limiter.RateLimiter)
+	}
+	return nil
+}
+
+type rlimiterWrapper struct {
+	name string
+	r    *rlimiterRegistry
+}
+
+func (w *rlimiterWrapper) Input() limiter.Limiter {
+	v := w.r.get(w.name)
+	if v == nil {
+		return nil
+	}
+	return v.Input()
+}
+
+func (w *rlimiterWrapper) Output() limiter.Limiter {
+	v := w.r.get(w.name)
+	if v == nil {
+		return nil
+	}
+	return v.Output()
+}