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<?php |
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namespace BigFileTools\Driver; |
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use Brick\Math\BigInteger; |
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/** |
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* Aggregates results from more ISizeDrivers. First successful call to driver will return value. |
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* Exceptions thrown during unsuccessful calls are saved into class state and are available over getter. |
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* |
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* @package BigFileTools\Driver |
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*/ |
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class SizeDriverAggregator implements ISizeDriver |
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{ |
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/** |
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* @var ISizeDriver[] |
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*/ |
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private $drivers = []; |
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/** |
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* @var ISizeDriver |
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*/ |
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private $lastUsedDriver = null; |
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/** |
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* @var Exception[] |
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*/ |
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private $lastExceptions = []; |
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/** |
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* @param ISizeDriver[] $drivers Ordered array of driver instances |
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*/ |
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public function __construct(array $drivers) |
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{ |
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foreach($drivers as $driver) { |
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$this->addDriver($driver); |
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} |
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} |
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private function addDriver(ISizeDriver $driver) |
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{ |
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$this->drivers[] = $driver; |
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} |
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/** |
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* Returns first non-failing driver from last used of getFileSize() |
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* @return ISizeDriver |
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* @internal Should be used for debugging only |
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*/ |
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public function getLastUsedDriver() |
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{ |
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return $this->lastUsedDriver; |
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} |
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/** |
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* Returns file size |
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* @param string $path Full path to file |
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* @return BigInteger |
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* @throws Exception |
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*/ |
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public function getFileSize($path) |
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{ |
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$this->lastExceptions = []; |
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foreach($this->drivers as $driver) { |
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try{ |
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$result = $driver->getFileSize($path); |
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$this->lastUsedDriver = $driver; |
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return $result; |
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} catch (Exception $exception) { |
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$this->lastExceptions[] = $exception; |
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} |
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} |
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throw new AggregateException( |
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"Cannot get file size. All methods failed. Call getPreviousExceptions() to get more information.", |
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null, |
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$this->lastExceptions |
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); |
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} |
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} |
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jkuchar /
BigFileTools
