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<?php |
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/** |
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* Worst Practice Aws S3 Adapter |
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* |
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* PHP version 8.0 |
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* |
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* @copyright 2021 Worst Practice |
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* @license https://opensource.org/licenses/MIT The MIT License (MIT) |
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* |
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* @link http://www.worstpractice.dev |
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*/ |
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declare(strict_types=1); |
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namespace WorstPractice\Component\Aws\S3; |
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use Aws\S3\S3Client; |
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/** |
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* AWS S3 adapter. |
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*/ |
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class Adapter implements AdapterInterface |
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{ |
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/** @var string */ |
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private string $bucket; |
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/** @var string[] */ |
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private array $validSortByKeys = [ |
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self::OBJECT_SORT_BY_NAME, |
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self::OBJECT_SORT_BY_NAME_DESC, |
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self::OBJECT_SORT_BY_DATE, |
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self::OBJECT_SORT_BY_DATE_DESC, |
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]; |
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/** |
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* Adapter constructor. |
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* |
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* @param S3Client $s3Client The AWS SDK S3 Client instance |
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* |
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* @SuppressWarnings(PHPMD.UnusedFormalParameter) |
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*/ |
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public function __construct(private S3Client $s3Client) |
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{ |
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} |
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/** |
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* Set active bucket. |
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* |
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* @param string $bucket |
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*/ |
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public function setBucket(string $bucket): void |
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{ |
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$this->bucket = $bucket; |
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} |
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/** |
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* Gets the last uploaded object's key in the given S3 bucket by key prefix. |
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* |
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* @param string $keyPrefix |
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* @return string|null |
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*/ |
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public function getLastUploadedKeyByPrefix(string $keyPrefix): ?string |
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{ |
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$object = $this->getObjectListByPrefix($keyPrefix, self::OBJECT_SORT_BY_DATE_DESC, 1); |
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return $object[0]['Key'] ?? null; |
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} |
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/** |
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* Gets the object list for the given S3 bucket by key prefix. |
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* |
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* @param string $keyPrefix The path on the S3 bucket. Mandatory. |
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* @param string|null $sortBy Sort the results by the given key. |
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* Use the constants because this parameter requires special values. |
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* @param int $limit Limit the results. 0 means return all. |
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* @return array |
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*/ |
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public function getObjectListByPrefix(string $keyPrefix, string $sortBy = null, int $limit = 0): array |
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{ |
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$results = []; |
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$continuationToken = ''; |
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$options = [ |
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'Bucket' => $this->bucket, |
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'EncodingType' => 'url', |
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'Prefix' => $keyPrefix, |
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'RequestPayer' => 'requester' |
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]; |
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// We can add a query limit here only when we don't want any special sorting. |
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// The default chunk limit is 1000. Probably the guys at the AWS know why not recommended to go over this limit |
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// so I won't do either. |
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if (empty($sortBy) && $limit > 0 && $limit < self::AWS_DEFAULT_LIST_LIMIT) { |
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$options['MaxKeys'] = $limit; |
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// Set the parameter to 0 to avoid the unnecessary array_chunk later. |
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$limit = 0; |
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} |
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do { |
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if (!empty($continuationToken)) { |
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$options['ContinuationToken'] = $continuationToken; |
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} |
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$response = $this->s3Client->listObjectsV2($options); |
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if (empty($response['Contents'])) { |
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break; |
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} |
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$results[] = $response['Contents']; |
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$continuationToken = $response['NextContinuationToken']; |
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$isTruncated = $response['IsTruncated']; |
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usleep(50000); // 50 ms pause to avoid CPU spikes |
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} while ($isTruncated); |
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$results = array_merge([], ...$results); |
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if (!empty($sortBy) && in_array($sortBy, $this->validSortByKeys, true)) { |
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$direction = $sortBy[0] === '^' ? 'asc' : 'desc'; |
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$sortByKey = substr($sortBy, 1); |
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usort($results, static function ($a, $b) use ($direction, $sortByKey) { |
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$cmp = strcmp($a[$sortByKey], $b[$sortByKey]); |
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return $direction === 'asc' ? $cmp : -$cmp; |
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}); |
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} |
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if (!empty($results) && $limit > 0) { |
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$results = array_chunk($results, $limit)[0]; |
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} |
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return $results; |
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} |
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} |
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Gixx /
worstpractice-aws-s3-adapter
