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<?php |
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namespace Dudlewebs\WPMCS\s3\Aws\S3; |
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use Dudlewebs\WPMCS\s3\Aws\HashingStream; |
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use Dudlewebs\WPMCS\s3\Aws\Multipart\AbstractUploader; |
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use Dudlewebs\WPMCS\s3\Aws\PhpHash; |
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use Dudlewebs\WPMCS\s3\Aws\ResultInterface; |
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use Dudlewebs\WPMCS\s3\GuzzleHttp\Psr7; |
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use Dudlewebs\WPMCS\s3\Psr\Http\Message\StreamInterface as Stream; |
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use Dudlewebs\WPMCS\s3\Aws\S3\Exception\S3MultipartUploadException; |
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/** |
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* Encapsulates the execution of a multipart upload to S3 or Glacier. |
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*/ |
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class MultipartUploader extends AbstractUploader |
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{ |
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use MultipartUploadingTrait; |
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const PART_MIN_SIZE = 5242880; |
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const PART_MAX_SIZE = 5368709120; |
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const PART_MAX_NUM = 10000; |
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/** |
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* Creates a multipart upload for an S3 object. |
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* |
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* The valid configuration options are as follows: |
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* |
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* - acl: (string) ACL to set on the object being upload. Objects are |
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* private by default. |
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* - before_complete: (callable) Callback to invoke before the |
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* `CompleteMultipartUpload` operation. The callback should have a |
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* function signature like `function (Aws\Command $command) {...}`. |
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* - before_initiate: (callable) Callback to invoke before the |
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* `CreateMultipartUpload` operation. The callback should have a function |
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* signature like `function (Aws\Command $command) {...}`. |
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* - before_upload: (callable) Callback to invoke before any `UploadPart` |
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* operations. The callback should have a function signature like |
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* `function (Aws\Command $command) {...}`. |
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* - bucket: (string, required) Name of the bucket to which the object is |
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* being uploaded, or an S3 access point ARN. |
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* - concurrency: (int, default=int(5)) Maximum number of concurrent |
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* `UploadPart` operations allowed during the multipart upload. |
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* - key: (string, required) Key to use for the object being uploaded. |
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* - params: (array) An array of key/value parameters that will be applied |
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* to each of the sub-commands run by the uploader as a base. |
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* Auto-calculated options will override these parameters. If you need |
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* more granularity over parameters to each sub-command, use the before_* |
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* options detailed above to update the commands directly. |
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* - part_size: (int, default=int(5242880)) Part size, in bytes, to use when |
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* doing a multipart upload. This must between 5 MB and 5 GB, inclusive. |
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* - prepare_data_source: (callable) Callback to invoke before starting the |
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* multipart upload workflow. The callback should have a function |
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* signature like `function () {...}`. |
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* - state: (Aws\Multipart\UploadState) An object that represents the state |
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* of the multipart upload and that is used to resume a previous upload. |
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* When this option is provided, the `bucket`, `key`, and `part_size` |
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* options are ignored. |
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* - track_upload: (boolean) Set true to track status in 1/8th increments |
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* for upload. |
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* |
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* @param S3ClientInterface $client Client used for the upload. |
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* @param mixed $source Source of the data to upload. |
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* @param array $config Configuration used to perform the upload. |
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*/ |
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public function __construct(S3ClientInterface $client, $source, array $config = []) |
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{ |
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parent::__construct($client, $source, \array_change_key_case($config) + ['bucket' => null, 'key' => null, 'exception_class' => S3MultipartUploadException::class]); |
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if ($this->displayProgress) { |
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$this->getState()->setProgressThresholds($this->source->getSize()); |
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} |
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} |
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protected function loadUploadWorkflowInfo() |
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{ |
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return ['command' => ['initiate' => 'CreateMultipartUpload', 'upload' => 'UploadPart', 'complete' => 'CompleteMultipartUpload'], 'id' => ['bucket' => 'Bucket', 'key' => 'Key', 'upload_id' => 'UploadId'], 'part_num' => 'PartNumber']; |
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} |
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protected function createPart($seekable, $number) |
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{ |
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// Initialize the array of part data that will be returned. |
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$data = []; |
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// Apply custom params to UploadPart data |
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$config = $this->getConfig(); |
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$params = isset($config['params']) ? $config['params'] : []; |
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foreach ($params as $k => $v) { |
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$data[$k] = $v; |
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} |
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$data['PartNumber'] = $number; |
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// Read from the source to create the body stream. |
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if ($seekable) { |
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// Case 1: Source is seekable, use lazy stream to defer work. |
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$body = $this->limitPartStream(new Psr7\LazyOpenStream($this->source->getMetadata('uri'), 'r')); |
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} else { |
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// Case 2: Stream is not seekable; must store in temp stream. |
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$source = $this->limitPartStream($this->source); |
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$source = $this->decorateWithHashes($source, $data); |
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$body = Psr7\Utils::streamFor(); |
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Psr7\Utils::copyToStream($source, $body); |
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} |
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$contentLength = $body->getSize(); |
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// Do not create a part if the body size is zero. |
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if ($contentLength === 0) { |
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return \false; |
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} |
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$body->seek(0); |
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$data['Body'] = $body; |
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if (isset($config['add_content_md5']) && $config['add_content_md5'] === \true) { |
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$data['AddContentMD5'] = \true; |
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} |
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$data['ContentLength'] = $contentLength; |
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return $data; |
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} |
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protected function extractETag(ResultInterface $result) |
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{ |
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return $result['ETag']; |
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} |
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protected function getSourceMimeType() |
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{ |
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if ($uri = $this->source->getMetadata('uri')) { |
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return Psr7\MimeType::fromFilename($uri) ?: 'application/octet-stream'; |
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} |
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} |
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protected function getSourceSize() |
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{ |
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return $this->source->getSize(); |
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} |
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/** |
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* Decorates a stream with a sha256 linear hashing stream. |
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* |
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* @param Stream $stream Stream to decorate. |
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* @param array $data Part data to augment with the hash result. |
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* |
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* @return Stream |
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*/ |
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private function decorateWithHashes(Stream $stream, array &$data) |
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{ |
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// Decorate source with a hashing stream |
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$hash = new PhpHash('sha256'); |
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return new HashingStream($stream, $hash, function ($result) use(&$data) { |
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$data['ContentSHA256'] = \bin2hex($result); |
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}); |
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} |
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} |
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