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<?php |
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declare(strict_types=1); |
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/** |
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* tubee |
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* |
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* @copyright Copryright (c) 2017-2019 gyselroth GmbH (https://gyselroth.com) |
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* @license GPL-3.0 https://opensource.org/licenses/GPL-3.0 |
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*/ |
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namespace Tubee\Storage; |
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use Generator; |
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use MongoDB\BSON\ObjectIdInterface; |
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use Psr\Log\LoggerInterface; |
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use Tubee\Storage\Balloon\ApiClient; |
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class Balloon implements StorageInterface |
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{ |
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/** |
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* Logger. |
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* |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* Balloon. |
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* |
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* @var ApiClient |
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*/ |
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protected $balloon; |
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/** |
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* Collection ID. |
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* |
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* @var string |
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*/ |
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protected $collection; |
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/** |
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* Init storage. |
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*/ |
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public function __construct(ApiClient $balloon, LoggerInterface $logger, ?ObjectIdInterface $collection = null) |
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{ |
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$this->balloon = $balloon; |
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$this->logger = $logger; |
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$this->collection = $collection; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function openReadStreams(string $pattern): Generator |
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{ |
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$files = $this->getFiles($pattern); |
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if (count($files) === 0) { |
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throw new Exception\NoFilesFound('no files found for '.$pattern); |
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} |
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$streams = []; |
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foreach ($files as $file) { |
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$this->logger->debug('open read stream from file ['.$file['id'].']', [ |
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'category' => get_class($this), |
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]); |
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$stream = $this->balloon->openSocket('/api/v2/nodes/'.$file['id'].'/content'); |
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if ($stream === false) { |
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throw new Exception\OpenStreamFailed('failed open read stream for '.$file['id']); |
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} |
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yield $file['name'] => $stream; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function openReadStream(string $file) |
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{ |
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$path = '/api/v2/nodes/'.$file.'/content'; |
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$this->logger->debug('open read stream from file ['.$path.']', [ |
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'category' => get_class($this), |
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]); |
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$stream = $this->balloon->openSocket($path); |
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if ($stream === false) { |
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throw new Exception\OpenStreamFailed('failed open read stream for '.$path); |
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} |
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return $stream; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function openWriteStream(string $file) |
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{ |
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$this->logger->debug('open write stream for [php://temp]', [ |
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'category' => get_class($this), |
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]); |
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$stream = fopen('php://temp', 'a+'); |
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if ($stream === false) { |
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throw new Exception\OpenStreamFailed('failed open write stream for '.$file); |
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} |
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return $stream; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function syncWriteStream($stream, string $file): bool |
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{ |
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$size = fstat($stream)['size']; |
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if ($size === 0) { |
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$this->logger->info('skip file of 0 bytes upload to balloon', [ |
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'category' => get_class($this), |
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]); |
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return true; |
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} |
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$chunks = $size / 8388608; |
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if ($chunks < 1) { |
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$chunks = 1; |
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} |
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$this->logger->info('upload file to balloon as ['.$file.']', [ |
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'category' => get_class($this), |
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]); |
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$query = [ |
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'collection' => $this->collection, |
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'name' => $file, |
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'size' => $size, |
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'chunks' => $chunks, |
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]; |
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rewind($stream); |
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$index = 0; |
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$session = null; |
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while (!feof($stream) && $index !== $chunks) { |
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$buffer = fread($stream, 8388608); |
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$query += [ |
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'index' => $index, |
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'session' => $session, |
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]; |
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$this->logger->debug('upload file chunk ['.$index.'/'.$chunks.'] of total ['.$size.'] bytes to balloon', [ |
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'category' => get_class($this), |
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]); |
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$result = $this->balloon->restCall('/api/v2/files/chunk', $query, 'PUT'); |
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++$index; |
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$session = $result['session']; |
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} |
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return fclose($stream); |
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} |
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/** |
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* Search balloon for files matching pattern. |
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*/ |
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protected function getFiles(string $pattern): array |
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{ |
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$query = [ |
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'filter' => [ |
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'directory' => false, |
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'name' => [ |
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'$regex' => $pattern, |
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], |
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], |
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]; |
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if ($this->collection === null) { |
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$url = '/api/v2/collections/children'; |
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} else { |
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$url = '/api/v2/collections/'.$this->collection.'/children'; |
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} |
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$result = $this->balloon->restCall($url, $query); |
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return $result['data']; |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.