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<?php |
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namespace kalanis\kw_locks\Methods; |
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use kalanis\kw_locks\Interfaces\IKLTranslations; |
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use kalanis\kw_locks\Interfaces\IPassedKey; |
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use kalanis\kw_locks\LockException; |
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use kalanis\kw_locks\Traits\TLang; |
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/** |
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* Class PidLock |
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* @package kalanis\kw_locks\Methods |
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* @codeCoverageIgnore accessing *nix calls |
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*/ |
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class PidLock implements IPassedKey |
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{ |
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use TLang; |
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protected string $tempPath = ''; |
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protected string $specialKey = ''; |
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/** |
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* @param string $tempPath |
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* @param IKLTranslations|null $lang |
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* @throws LockException |
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*/ |
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public function __construct(string $tempPath, ?IKLTranslations $lang = null) |
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{ |
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$this->setKlLang($lang); |
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if (\defined('PHP_OS_FAMILY') && in_array(PHP_OS_FAMILY, ['Windows', 'Unknown']) ) { |
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throw new LockException($this->getKlLang()->iklCannotUseOS()); |
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} |
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if (\DIRECTORY_SEPARATOR === '\\') { |
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throw new LockException($this->getKlLang()->iklCannotUseOS()); |
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} |
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$this->tempPath = $tempPath; |
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} |
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public function __destruct() |
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{ |
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try { |
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$this->delete(); |
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} catch (LockException $ex) { |
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// do nothing instead of |
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// register_shutdown_function([$this, 'delete']); |
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} |
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} |
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public function setKey(string $key): void |
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{ |
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$this->specialKey = $key; |
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} |
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public function has(): bool |
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{ |
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if (file_exists($this->getLockFileName())) { |
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$lockingPid = trim(strval(file_get_contents($this->getLockFileName()))); |
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$otherOnes = explode(PHP_EOL, trim(`ps -e | awk '{print $1}'`)); |
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if (in_array($lockingPid, $otherOnes)) { |
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return true; |
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} |
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throw new LockException($this->getKlLang()->iklLockedByOther()); |
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} |
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return false; |
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} |
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public function create(bool $force = false): bool |
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{ |
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if (!$force && $this->has()) { |
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return false; |
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} |
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$result = @file_put_contents($this->getLockFileName(), strval(getmypid()) . PHP_EOL); |
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return (false !== $result); |
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} |
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public function delete(bool $force = false): bool |
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{ |
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if (!$force && !$this->has()) { |
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return true; |
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} |
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return @unlink($this->getLockFileName()); |
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} |
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protected function getLockFileName(): string |
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{ |
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return $this->tempPath . DIRECTORY_SEPARATOR . $this->specialKey . '.lock'; |
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} |
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} |
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alex-kalanis /
kw_locks
