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Edit File : AbstractUploader.php \| Size : 3.82 KB
<?php namespace Aws\Multipart; use Aws\AwsClientInterface as Client; use GuzzleHttp\Psr7; use InvalidArgumentException as IAE; use Psr\Http\Message\StreamInterface as Stream; abstract class AbstractUploader extends AbstractUploadManager { /** @var Stream Source of the data to be uploaded. / protected $source; /* * @param Client $client * @param mixed $source * @param array $config / public function __construct(Client $client, $source, array $config = []) { $this->source = $this->determineSource($source); parent::__construct($client, $config); } /* * Create a stream for a part that starts at the current position and * has a length of the upload part size (or less with the final part). * * @param Stream $stream * * @return Psr7\LimitStream / protected function limitPartStream(Stream $stream) { // Limit what is read from the stream to the part size. return new Psr7\LimitStream( $stream, $this->state->getPartSize(), $this->source->tell() ); } protected function getUploadCommands(callable $resultHandler) { // Determine if the source can be seeked. $seekable = $this->source->isSeekable() && $this->source->getMetadata('wrapper_type') === 'plainfile'; for ($partNumber = 1; $this->isEof($seekable); $partNumber++) { // If we haven't already uploaded this part, yield a new part. if (!$this->state->hasPartBeenUploaded($partNumber)) { $partStartPos = $this->source->tell(); if (!($data = $this->createPart($seekable, $partNumber))) { break; } $command = $this->client->getCommand( $this->info['command']['upload'], $data + $this->state->getId() ); $command->getHandlerList()->appendSign($resultHandler, 'mup'); yield $command; if ($this->source->tell() > $partStartPos) { continue; } } // Advance the source's offset if not already advanced. if ($seekable) { $this->source->seek(min( $this->source->tell() + $this->state->getPartSize(), $this->source->getSize() )); } else { $this->source->read($this->state->getPartSize()); } } } /* * Generates the parameters for an upload part by analyzing a range of the * source starting from the current offset up to the part size. * * @param bool $seekable * @param int $number * * @return array\|null / abstract protected function createPart($seekable, $number); /* * Checks if the source is at EOF. * * @param bool $seekable * * @return bool / private function isEof($seekable) { return $seekable ? $this->source->tell() < $this->source->getSize() : !$this->source->eof(); } /* * Turns the provided source into a stream and stores it. * * If a string is provided, it is assumed to be a filename, otherwise, it * passes the value directly to `Psr7\stream_for()`. * * @param mixed $source * * @return Stream */ private function determineSource($source) { // Use the contents of a file as the data source. if (is_string($source)) { $source = Psr7\try_fopen($source, 'r'); } // Create a source stream. $stream = Psr7\stream_for($source); if (!$stream->isReadable()) { throw new IAE('Source stream must be readable.'); } return $stream; } } Back

Edit File : AbstractUploader.php | Size : 3.82 KB

<?php
namespace Aws\Multipart;

use Aws\AwsClientInterface as Client;
use GuzzleHttp\Psr7;
use InvalidArgumentException as IAE;
use Psr\Http\Message\StreamInterface as Stream;

abstract class AbstractUploader extends AbstractUploadManager
{
    /** @var Stream Source of the data to be uploaded. */
    protected $source;

/**
     * @param Client $client
     * @param mixed  $source
     * @param array  $config
     */
    public function __construct(Client $client, $source, array $config = [])
    {
        $this->source = $this->determineSource($source);
        parent::__construct($client, $config);
    }

/**
     * Create a stream for a part that starts at the current position and
     * has a length of the upload part size (or less with the final part).
     *
     * @param Stream $stream
     *
     * @return Psr7\LimitStream
     */
    protected function limitPartStream(Stream $stream)
    {
        // Limit what is read from the stream to the part size.
        return new Psr7\LimitStream(
            $stream,
            $this->state->getPartSize(),
            $this->source->tell()
        );
    }

protected function getUploadCommands(callable $resultHandler)
    {
        // Determine if the source can be seeked.
        $seekable = $this->source->isSeekable()
            && $this->source->getMetadata('wrapper_type') === 'plainfile';

for ($partNumber = 1; $this->isEof($seekable); $partNumber++) {
            // If we haven't already uploaded this part, yield a new part.
            if (!$this->state->hasPartBeenUploaded($partNumber)) {
                $partStartPos = $this->source->tell();
                if (!($data = $this->createPart($seekable, $partNumber))) {
                    break;
                }
                $command = $this->client->getCommand(
                    $this->info['command']['upload'],
                    $data + $this->state->getId()
                );
                $command->getHandlerList()->appendSign($resultHandler, 'mup');
                yield $command;
                if ($this->source->tell() > $partStartPos) {
                    continue;
                }
            }

// Advance the source's offset if not already advanced.
            if ($seekable) {
                $this->source->seek(min(
                    $this->source->tell() + $this->state->getPartSize(),
                    $this->source->getSize()
                ));
            } else {
                $this->source->read($this->state->getPartSize());
            }
        }
    }

/**
     * Generates the parameters for an upload part by analyzing a range of the
     * source starting from the current offset up to the part size.
     *
     * @param bool $seekable
     * @param int  $number
     *
     * @return array|null
     */
    abstract protected function createPart($seekable, $number);

/**
     * Checks if the source is at EOF.
     *
     * @param bool $seekable
     *
     * @return bool
     */
    private function isEof($seekable)
    {
        return $seekable
            ? $this->source->tell() < $this->source->getSize()
            : !$this->source->eof();
    }

/**
     * Turns the provided source into a stream and stores it.
     *
     * If a string is provided, it is assumed to be a filename, otherwise, it
     * passes the value directly to `Psr7\stream_for()`.
     *
     * @param mixed $source
     *
     * @return Stream
     */
    private function determineSource($source)
    {
        // Use the contents of a file as the data source.
        if (is_string($source)) {
            $source = Psr7\try_fopen($source, 'r');
        }

// Create a source stream.
        $stream = Psr7\stream_for($source);
        if (!$stream->isReadable()) {
            throw new IAE('Source stream must be readable.');
        }

return $stream;
    }
}

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