/**
* Call fetcher to fetch the token.
*
* @return string
*/
private function fetchToken()
{
$auth_tokens = $this->fetcher->fetchAuthToken($this->httpHandler);
if (array_key_exists('access_token', $auth_tokens)) {
// notify the callback if applicable
if ($this->tokenCallback) {
call_user_func($this->tokenCallback, $this->fetcher->getCacheKey(), $auth_tokens['access_token']);
}
return $auth_tokens['access_token'];
}
}
/**
* Updates the request with an Authorization header when auth is 'fetched_auth_token'.
*
* use GuzzleHttp\Client;
* use Google\Auth\OAuth2;
* use Google\Auth\Subscriber\AuthTokenSubscriber;
*
* $config = [..<oauth config param>.];
* $oauth2 = new OAuth2($config)
* $subscriber = new AuthTokenSubscriber($oauth2);
*
* $client = new Client([
* 'base_url' => 'https://www.googleapis.com/taskqueue/v1beta2/projects/',
* 'defaults' => ['auth' => 'google_auth']
* ]);
* $client->getEmitter()->attach($subscriber);
*
* $res = $client->get('myproject/taskqueues/myqueue');
*
* @param BeforeEvent $event
*/
public function onBefore(BeforeEvent $event)
{
// Requests using "auth"="google_auth" will be authorized.
$request = $event->getRequest();
if ($request->getConfig()['auth'] != 'google_auth') {
return;
}
// Fetch the auth token.
$auth_tokens = $this->fetcher->fetchAuthToken($this->httpHandler);
if (array_key_exists('access_token', $auth_tokens)) {
$request->setHeader('Authorization', 'Bearer ' . $auth_tokens['access_token']);
// notify the callback if applicable
if ($this->tokenCallback) {
call_user_func($this->tokenCallback, $this->fetcher->getCacheKey(), $auth_tokens['access_token']);
}
}
}
/**
* @return string
*/
public function getCacheKey()
{
return $this->getFullCacheKey($this->fetcher->getCacheKey());
}