add pkgs from core

registry/admission.go

@@ -0,0 +1,40 @@
+package registry
+
+import (
+	"github.com/go-gost/core/admission"
+)
+
+type admissionRegistry struct {
+	registry
+}
+
+func (r *admissionRegistry) Register(name string, v admission.Admission) error {
+	return r.registry.Register(name, v)
+}
+
+func (r *admissionRegistry) Get(name string) admission.Admission {
+	if name != "" {
+		return &admissionWrapper{name: name, r: r}
+	}
+	return nil
+}
+
+func (r *admissionRegistry) get(name string) admission.Admission {
+	if v := r.registry.Get(name); v != nil {
+		return v.(admission.Admission)
+	}
+	return nil
+}
+
+type admissionWrapper struct {
+	name string
+	r    *admissionRegistry
+}
+
+func (w *admissionWrapper) Admit(addr string) bool {
+	p := w.r.get(w.name)
+	if p == nil {
+		return false
+	}
+	return p.Admit(addr)
+}