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Devang Srivastava 2017-12-07 21:23:18 +05:30
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aws/Aws/S3/MultipartCopy.php Normal file
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<?php
namespace Aws\S3;
use Aws\Multipart\AbstractUploadManager;
use Aws\ResultInterface;
use GuzzleHttp\Psr7;
class MultipartCopy extends AbstractUploadManager
{
use MultipartUploadingTrait;
/** @var string */
private $source;
/** @var ResultInterface */
private $sourceMetadata;
/**
* Creates a multipart upload for copying an S3 object.
*
* The valid configuration options are as follows:
*
* - acl: (string) ACL to set on the object being upload. Objects are
* private by default.
* - before_complete: (callable) Callback to invoke before the
* `CompleteMultipartUpload` operation. The callback should have a
* function signature like `function (Aws\Command $command) {...}`.
* - before_initiate: (callable) Callback to invoke before the
* `CreateMultipartUpload` operation. The callback should have a function
* signature like `function (Aws\Command $command) {...}`.
* - before_upload: (callable) Callback to invoke before `UploadPartCopy`
* operations. The callback should have a function signature like
* `function (Aws\Command $command) {...}`.
* - bucket: (string, required) Name of the bucket to which the object is
* being uploaded.
* - concurrency: (int, default=int(5)) Maximum number of concurrent
* `UploadPart` operations allowed during the multipart upload.
* - key: (string, required) Key to use for the object being uploaded.
* - params: (array) An array of key/value parameters that will be applied
* to each of the sub-commands run by the uploader as a base.
* Auto-calculated options will override these parameters. If you need
* more granularity over parameters to each sub-command, use the before_*
* options detailed above to update the commands directly.
* - part_size: (int, default=int(5242880)) Part size, in bytes, to use when
* doing a multipart upload. This must between 5 MB and 5 GB, inclusive.
* - state: (Aws\Multipart\UploadState) An object that represents the state
* of the multipart upload and that is used to resume a previous upload.
* When this option is provided, the `bucket`, `key`, and `part_size`
* options are ignored.
* - source_metadata: (Aws\ResultInterface) An object that represents the
* result of executing a HeadObject command on the copy source.
*
* @param S3ClientInterface $client Client used for the upload.
* @param string $source Location of the data to be copied
* (in the form /<bucket>/<key>).
* @param array $config Configuration used to perform the upload.
*/
public function __construct(
S3ClientInterface $client,
$source,
array $config = []
) {
$this->source = '/' . ltrim($source, '/');
parent::__construct($client, array_change_key_case($config) + [
'source_metadata' => null
]);
}
/**
* An alias of the self::upload method.
*
* @see self::upload
*/
public function copy()
{
return $this->upload();
}
protected function loadUploadWorkflowInfo()
{
return [
'command' => [
'initiate' => 'CreateMultipartUpload',
'upload' => 'UploadPartCopy',
'complete' => 'CompleteMultipartUpload',
],
'id' => [
'bucket' => 'Bucket',
'key' => 'Key',
'upload_id' => 'UploadId',
],
'part_num' => 'PartNumber',
];
}
protected function getUploadCommands(callable $resultHandler)
{
$parts = ceil($this->getSourceSize() / $this->determinePartSize());
for ($partNumber = 1; $partNumber <= $parts; $partNumber++) {
// If we haven't already uploaded this part, yield a new part.
if (!$this->state->hasPartBeenUploaded($partNumber)) {
$command = $this->client->getCommand(
$this->info['command']['upload'],
$this->createPart($partNumber, $parts)
+ $this->getState()->getId()
);
$command->getHandlerList()->appendSign($resultHandler, 'mup');
yield $command;
}
}
}
private function createPart($partNumber, $partsCount)
{
$data = [];
// Apply custom params to UploadPartCopy data
$config = $this->getConfig();
$params = isset($config['params']) ? $config['params'] : [];
foreach ($params as $k => $v) {
$data[$k] = $v;
}
$data['CopySource'] = $this->source;
$data['PartNumber'] = $partNumber;
$defaultPartSize = $this->determinePartSize();
$startByte = $defaultPartSize * ($partNumber - 1);
$data['ContentLength'] = $partNumber < $partsCount
? $defaultPartSize
: $this->getSourceSize() - ($defaultPartSize * ($partsCount - 1));
$endByte = $startByte + $data['ContentLength'] - 1;
$data['CopySourceRange'] = "bytes=$startByte-$endByte";
return $data;
}
protected function extractETag(ResultInterface $result)
{
return $result->search('CopyPartResult.ETag');
}
protected function getSourceMimeType()
{
return $this->getSourceMetadata()['ContentType'];
}
protected function getSourceSize()
{
return $this->getSourceMetadata()['ContentLength'];
}
private function getSourceMetadata()
{
if (empty($this->sourceMetadata)) {
$this->sourceMetadata = $this->fetchSourceMetadata();
}
return $this->sourceMetadata;
}
private function fetchSourceMetadata()
{
if ($this->config['source_metadata'] instanceof ResultInterface) {
return $this->config['source_metadata'];
}
list($bucket, $key) = explode('/', ltrim($this->source, '/'), 2);
$headParams = [
'Bucket' => $bucket,
'Key' => $key,
];
if (strpos($key, '?')) {
list($key, $query) = explode('?', $key, 2);
$headParams['Key'] = $key;
$query = Psr7\parse_query($query, false);
if (isset($query['versionId'])) {
$headParams['VersionId'] = $query['versionId'];
}
}
return $this->client->headObject($headParams);
}
}