// Copyright 2018 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package authn

// anonymous implements Authenticator for anonymous authentication.
type anonymous struct{}

// Authorization implements Authenticator.
func (a *anonymous) Authorization() (string, error) {
	return "", nil
}

// Anonymous is a singleton Authenticator for providing anonymous auth.
var Anonymous Authenticator = &anonymous{}
