initial commit

registry/resolver.go

@@ -0,0 +1,43 @@
+package registry
+
+import (
+	"context"
+	"net"
+
+	"github.com/go-gost/core/resolver"
+)
+
+type resolverRegistry struct {
+	registry
+}
+
+func (r *resolverRegistry) Register(name string, v resolver.Resolver) error {
+	return r.registry.Register(name, v)
+}
+
+func (r *resolverRegistry) Get(name string) resolver.Resolver {
+	if name != "" {
+		return &resolverWrapper{name: name, r: r}
+	}
+	return nil
+}
+
+func (r *resolverRegistry) get(name string) resolver.Resolver {
+	if v := r.registry.Get(name); v != nil {
+		return v.(resolver.Resolver)
+	}
+	return nil
+}
+
+type resolverWrapper struct {
+	name string
+	r    *resolverRegistry
+}
+
+func (w *resolverWrapper) Resolve(ctx context.Context, network, host string) ([]net.IP, error) {
+	r := w.r.get(w.name)
+	if r == nil {
+		return nil, resolver.ErrInvalid
+	}
+	return r.Resolve(ctx, network, host)
+}