Feature request - authorization token should be cached in central cache system

[stefliekens]

At this moment the authorization token cannot be saved in central cache system like Redis, filesystem, Memcached, DB, .... Currently the token is stored in a variable in the implementation and is forgotten when another process / request is booted.

Below you can see an explicit implementation we have introduced into our project (Laravel, with Redis cache enabled) by overwriting the Twikey\Api\Twikey class.

class TwikeyClient extends Twikey
{
 
  public function refreshTokenIfRequired($force = false): string
    {
        if ($force) {
            return $this->retrieveAuthorizationToken();
        }

        return Cache::remember(
            'twikey_api_authorization_token',
            config('twikey.api.ttl_authorization_token'),
            $this->retrieveAuthorizationToken(...)
        );
    }

    private function retrieveAuthorizationToken(): string
    {
        $response = $this->client->request(
            'POST',
            $this->baseUrl.'/creditor',
            [
                'headers' => [
                    'Accept' => 'application/json',
                    'Content-Type' => 'application/x-www-form-urlencoded',
                    'User-Agent' => $this->userAgent,
                    'Accept-Language' => 'en',
                ],
                'form_params' => [
                    'apiToken' => $this->apiKey,
                ],
            ]
        );

        if ($response->hasHeader('Authorization')) {
            return $response->getHeader('Authorization')[0];
        }

        if ($response->hasHeader('Apierror')) {
            throw new TwikeyException($response->getHeader('Apierror')[0]);
        }

        throw new TwikeyException('General Twikey exception : '.$response->getReasonPhrase());
    }

}