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Diffstat (limited to 'pkg/authn/multikeychain.go')
-rw-r--r-- | pkg/authn/multikeychain.go | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/pkg/authn/multikeychain.go b/pkg/authn/multikeychain.go new file mode 100644 index 0000000..3b1804f --- /dev/null +++ b/pkg/authn/multikeychain.go @@ -0,0 +1,41 @@ +// 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 + +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) { + for _, kc := range mk.keychains { + auth, err := kc.Resolve(target) + if err != nil { + return nil, err + } + if auth != Anonymous { + return auth, nil + } + } + return Anonymous, nil +} |