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41 lines
1.2 KiB
41 lines
1.2 KiB
// Copyright 2018 Google LLC All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package authn
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type multiKeychain struct {
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keychains []Keychain
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}
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// Assert that our multi-keychain implements Keychain.
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var _ (Keychain) = (*multiKeychain)(nil)
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// NewMultiKeychain composes a list of keychains into one new keychain.
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func NewMultiKeychain(kcs ...Keychain) Keychain {
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return &multiKeychain{keychains: kcs}
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}
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// Resolve implements Keychain.
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func (mk *multiKeychain) Resolve(target Resource) (Authenticator, error) {
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for _, kc := range mk.keychains {
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auth, err := kc.Resolve(target)
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if err != nil {
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return nil, err
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}
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if auth != Anonymous {
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return auth, nil
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}
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}
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return Anonymous, nil
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}
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