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<?php declare(strict_types=1); |
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namespace PmgDev\DatabaseReplicator\Source; |
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use Nette\Utils\FileSystem; |
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use PmgDev\DatabaseReplicator\Exceptions; |
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class Hash |
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{ |
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/** @var string */ |
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private $name; |
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/** @var string */ |
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private $tempDir = ''; |
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/** @var string */ |
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private $md5 = ''; |
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/** @var int */ |
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private $expiration = 1800; // [s] default 30 min |
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/** @var Files */ |
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private $files; |
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public function __construct( |
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string $name, |
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string $tempDir, |
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Files $files |
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) |
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{ |
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Filesystem::createDir($tempDir); |
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$this->name = $name; |
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$this->tempDir = $tempDir; |
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$this->files = $files; |
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} |
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public function getFiles(): Files |
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{ |
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return $this->files; |
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} |
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public function setExpiration(int $expiration): void |
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{ |
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$this->expiration = max($expiration, 0); |
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} |
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public function begin(): void |
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{ |
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$this->removeActiveFile(); |
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$this->md5 = $this->md5Dry(); |
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} |
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public function removeActiveFile(): void |
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{ |
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@unlink($this->activeFile()); |
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$this->md5 = ''; |
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} |
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public function getName(): string |
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{ |
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return $this->name; |
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} |
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public function commit(): void |
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{ |
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if ($this->md5 === '') { |
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throw new Exceptions\InvalidStateException('Let\'s start by method begin().'); |
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} |
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file_put_contents($this->activeFile(), $this->md5); |
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} |
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public function md5(): string |
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{ |
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if ($this->md5 === '') { |
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$filePath = $this->activeFile(); |
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if (!is_file($filePath) || (time() - filemtime($filePath) >= $this->expiration)) { |
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throw new Exceptions\ActiveFileNotFoundException($filePath); |
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} |
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$this->md5 = (string) file_get_contents($filePath); |
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if ($this->md5 === '') { |
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throw new Exceptions\ActiveFileNotFoundException($filePath); |
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} |
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} |
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return $this->md5; |
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} |
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private function activeFile(): string |
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{ |
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return $this->tempDir . DIRECTORY_SEPARATOR . $this->name; |
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} |
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private function md5Dry(): string |
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{ |
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return md5($this->getName() . $this->md5Files()); |
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} |
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private function md5Files(): string |
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{ |
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$token = ''; |
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foreach ($this->files as $filepath) { |
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$token .= '.' . md5_file($filepath); |
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} |
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return $token; |
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} |
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} |
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pmgdev /
database-replicator
If you suppress an error, we recommend checking for the error condition explicitly: