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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2022 (original work) Open Assessment Technologies SA. |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\tao\model\StatisticalMetadata\Import\Observer; |
| 24 | |
| 25 | use Google\Cloud\PubSub\PubSubClient; |
| 26 | use oat\tao\model\Observer\GCP\PubSubClientFactory; |
| 27 | use oat\tao\model\Observer\GCP\PubSubObserver; |
| 28 | use oat\tao\model\Observer\Log\LoggerObserver; |
| 29 | use Psr\Log\LoggerInterface; |
| 30 | use SplObserver; |
| 31 | |
| 32 | class ObserverFactory |
| 33 | { |
| 34 | /** @var PubSubClientFactory */ |
| 35 | private $pubSubClientFactory; |
| 36 | |
| 37 | /** @var LoggerInterface */ |
| 38 | private $logger; |
| 39 | |
| 40 | /** @var array */ |
| 41 | private $environmentVars; |
| 42 | |
| 43 | public function __construct( |
| 44 | PubSubClientFactory $pubSubClientFactory, |
| 45 | LoggerInterface $logger, |
| 46 | array $environmentVars = null |
| 47 | ) { |
| 48 | $this->logger = $logger; |
| 49 | $this->environmentVars = $environmentVars ?? $_ENV; |
| 50 | $this->pubSubClientFactory = $pubSubClientFactory; |
| 51 | } |
| 52 | |
| 53 | public function create(array $config = []): SplObserver |
| 54 | { |
| 55 | if (class_exists(PubSubClient::class) && $this->getPubSubTopic()) { |
| 56 | return new PubSubObserver( |
| 57 | $this->pubSubClientFactory->create(), |
| 58 | $this->logger, |
| 59 | [ |
| 60 | PubSubObserver::CONFIG_TOPIC => $this->getPubSubTopic(), |
| 61 | ] |
| 62 | ); |
| 63 | } |
| 64 | |
| 65 | return new LoggerObserver($this->logger); |
| 66 | } |
| 67 | |
| 68 | private function getPubSubTopic(): ?string |
| 69 | { |
| 70 | return $this->environmentVars['DATA_STORE_STATISTIC_PUB_SUB_TOPIC'] ?? null; |
| 71 | } |
| 72 | } |