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<?php

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namespace WPML\Utilities;

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class KeyedLock extends Lock {

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/** @var string $keyName */

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private $keyName;

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/**

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* Lock constructor.

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* @param \wpdb $wpdb

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* @param string $name

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public function __construct( \wpdb $wpdb, $name ) {

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$this->keyName = 'wpml.' . $name . '.lock.key';

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parent::__construct( $wpdb, $name );

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}

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/**

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* @param string $key

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* @param int $release_timeout

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* @return string|false The key or false if could not acquire the lock

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public function create( $key = null, $release_timeout = null ) {

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$acquired = parent::create( $release_timeout );

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if ( $acquired ) {

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if ( ! $key ) {

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$key = wp_generate_uuid4();

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}

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update_option( $this->keyName, $key );

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return $key;

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} elseif ( $key === get_option( $this->keyName ) ) {

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$this->extendTimeout();

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return $key;

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}

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return false;

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}

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public function release() {

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delete_option( $this->keyName );

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return parent::release();

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}

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private function extendTimeout() {

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update_option( $this->name, time() );

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}

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}

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