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<?php |
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/* |
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* Copyright 2015 Google Inc. |
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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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*/ |
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|
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namespace Google\Auth\Credentials; |
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|
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/** |
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* Authenticates requests using IAM credentials |
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*/ |
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class IAMCredentials |
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{ |
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const SELECTOR_KEY = 'x-goog-iam-authority-selector'; |
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const TOKEN_KEY = 'x-goog-iam-authorization-token'; |
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|
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private $selector; |
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private $token; |
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|
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/** |
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* @param $selector string the IAM selector |
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* @param $token string the IAM token |
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*/ |
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public function __construct($selector, $token) |
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{ |
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if (!is_string($selector)) { |
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throw new \InvalidArgumentException( |
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'selector must be a string'); |
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} |
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if (!is_string($token)) { |
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throw new \InvalidArgumentException( |
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'token must be a string'); |
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} |
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|
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$this->selector = $selector; |
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$this->token = $token; |
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} |
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|
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/** |
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* export a callback function which updates runtime metadata |
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* |
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* @return an updateMetadata function |
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*/ |
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public function getUpdateMetadataFunc() |
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{ |
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return array($this, 'updateMetadata'); |
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} |
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|
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/** |
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* Updates metadata with the appropriate header metadata |
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* |
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* @param array $metadata metadata hashmap |
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* @param string $unusedAuthUri optional auth uri |
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* @param callable $httpHandler callback which delivers psr7 request |
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* Note: this param is unused here, only included here for |
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* consistency with other credentials class |
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* |
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* @return array updated metadata hashmap |
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*/ |
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public function updateMetadata( |
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$metadata, |
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$unusedAuthUri = null, |
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callable $httpHandler = null |
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) { |
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$metadata_copy = $metadata; |
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$metadata_copy[self::SELECTOR_KEY] = $this->selector; |
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$metadata_copy[self::TOKEN_KEY] = $this->token; |
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return $metadata_copy; |
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} |
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} |
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|
