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<?php
/*
* Copyright 2015 Google Inc.
*
* 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\Auth\Subscriber;
use GuzzleHttp\Event\BeforeEvent;
use GuzzleHttp\Event\RequestEvents;
use GuzzleHttp\Event\SubscriberInterface;
/**
* SimpleSubscriber is a Guzzle Subscriber that implements Google's Simple API
* access.
*
* Requests are accessed using the Simple API access developer key.
*/
class SimpleSubscriber implements SubscriberInterface
{
/**
* @var array
*/
private $config;
/**
* Create a new Simple plugin.
*
* The configuration array expects one option
* - key: required, otherwise InvalidArgumentException is thrown
*
* @param array $config Configuration array
*/
public function __construct(array $config)
{
if (!isset($config['key'])) {
throw new \InvalidArgumentException('requires a key to have been set');
}
$this->config = array_merge([], $config);
}
/**
* @return array
*/
public function getEvents()
{
return ['before' => ['onBefore', RequestEvents::SIGN_REQUEST]];
}
/**
* Updates the request query with the developer key if auth is set to simple.
*
* Example:
* ```
* use Google\Auth\Subscriber\SimpleSubscriber;
* use GuzzleHttp\Client;
*
* $my_key = 'is not the same as yours';
* $subscriber = new SimpleSubscriber(['key' => $my_key]);
*
* $client = new Client([
* 'base_url' => 'https://www.googleapis.com/discovery/v1/',
* 'defaults' => ['auth' => 'simple']
* ]);
* $client->getEmitter()->attach($subscriber);
*
* $res = $client->get('drive/v2/rest');
* ```
*
* @param BeforeEvent $event
*/
public function onBefore(BeforeEvent $event)
{
// Requests using "auth"="simple" with the developer key.
$request = $event->getRequest();
if ($request->getConfig()['auth'] != 'simple') {
return;
}
$request->getQuery()->overwriteWith($this->config);
}
}