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<?php
/**
* Copyright 2017 Google Inc. 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.
*/
namespace Google\Cloud\Core;
use Google\Auth\FetchAuthTokenInterface;
/**
* Provides an anonymous set of credentials, which is useful for APIs which do
* not require authentication.
*/
class AnonymousCredentials implements FetchAuthTokenInterface
{
/**
* @var array
*/
private $token = [
'access_token' => null
];
/**
* Fetches the auth token. In this case it returns a null value.
*
* @param callable $httpHandler
* @return array
*/
public function fetchAuthToken(callable $httpHandler = null)
{
return $this->token;
}
/**
* Returns the cache key. In this case it returns a null value, disabling
* caching.
*
* @return string|null
*/
public function getCacheKey()
{
return null;
}
/**
* Fetches the last received token. In this case, it returns the same null
* auth token.
*
* @return array
*/
public function getLastReceivedToken()
{
return $this->token;
}
}