refactor authentication (#1950)

pkg/apiserver/authentication/request/anonymous.go

@@ -0,0 +1,24 @@
+package request
+
+import (
+	"k8s.io/apiserver/pkg/authentication/authenticator"
+	"k8s.io/apiserver/pkg/authentication/user"
+	"net/http"
+	"strings"
+)
+
+type AnonymousAuthenticator struct{}
+
+func (a *AnonymousAuthenticator) AuthenticateRequest(req *http.Request) (*authenticator.Response, bool, error) {
+	auth := strings.TrimSpace(req.Header.Get("Authorization"))
+	if auth == "" {
+		return &authenticator.Response{
+			User: &user.DefaultInfo{
+				Name:   user.Anonymous,
+				UID:    "",
+				Groups: []string{user.AllUnauthenticated},
+			},
+		}, true, nil
+	}
+	return nil, false, nil
+}