working commit

vendor/github.com/google/go-containerregistry/pkg/authn/multikeychain.go

@@ -1,47 +0,0 @@
-// 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
-
-import "context"
-
-type multiKeychain struct {
-	keychains []Keychain
-}
-
-// Assert that our multi-keychain implements Keychain.
-var _ (Keychain) = (*multiKeychain)(nil)
-
-// NewMultiKeychain composes a list of keychains into one new keychain.
-func NewMultiKeychain(kcs ...Keychain) Keychain {
-	return &multiKeychain{keychains: kcs}
-}
-
-// Resolve implements Keychain.
-func (mk *multiKeychain) Resolve(target Resource) (Authenticator, error) {
-	return mk.ResolveContext(context.Background(), target)
-}
-
-func (mk *multiKeychain) ResolveContext(ctx context.Context, target Resource) (Authenticator, error) {
-	for _, kc := range mk.keychains {
-		auth, err := Resolve(ctx, kc, target)
-		if err != nil {
-			return nil, err
-		}
-		if auth != Anonymous {
-			return auth, nil
-		}
-	}
-	return Anonymous, nil
-}