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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
/**
* Abstract sitemap generation state class.
*
* @package automattic/jetpack
* @since 4.8.0
* @author Automattic
*/
/* Include standard constants and librarian. */
require_once __DIR__ . '/sitemap-constants.php';
require_once __DIR__ . '/sitemap-librarian.php';
if ( defined( 'WP_DEBUG' ) && ( true === WP_DEBUG ) ) {
require_once __DIR__ . '/sitemap-logger.php';
}
/**
* This class provides an interface for storing and retrieving
* the state of a sitemap generation phase. Whenever the builder
* wants to build a new sitemap page, it uses this class to see
* what the current state of the sitemap is. The lock is stored
* as a transient with max lifetime of 15 minutes; this way if our
* builder times out before unlocking the state, the lock will expire
* before the builder tries again.
*
* @since 4.8.0
*/
class Jetpack_Sitemap_State {
/**
* Initial state for the sitemap generator.
*
* @access public
* @since 4.8.0
*
* @param string $type The initial sitemap type.
*
* @return array $args {
* @type string sitemap-type The type of sitemap to be generated.
* @type int last-added The largest index to be added to a generated sitemap page.
* @type int number The index of the last sitemap to be generated.
* @type string last-modified The latest timestamp seen.
* @type array max The latest index of each sitemap type seen.
* }
*/
private static function initial( $type = JP_PAGE_SITEMAP_TYPE ) {
return array(
'sitemap-type' => $type,
'last-added' => 0,
'number' => 0,
'last-modified' => '1970-01-01 00:00:00',
'max' => array(),
);
}
/**
* Reset the sitemap state.
*
* @param string $type The initial sitemap type.
*
* @access public
* @since 4.8.0
*/
public static function reset( $type ) {
delete_transient( 'jetpack-sitemap-state-lock' );
update_option(
'jetpack-sitemap-state',
self::initial( $type )
);
}
/**
* Store a sitemap state, and unlock it.
*
* @access public
* @since 4.8.0
*
* @param array $state Array of the Sitemap state details.
* @type string sitemap-type The type of sitemap to be generated.
* @type int last-added The largest index to be added to a generated sitemap page.
* @type int number The index of the last sitemap to be generated.
* @type string last-modified The latest timestamp seen.
*/
public static function check_in( $state ) {
// Get the old max value.
$sitemap_old = get_option( 'jetpack-sitemap-state', self::initial() );
$state['max'] = $sitemap_old['max'];
// Update the max value of the current type.
$state['max'][ $state['sitemap-type'] ]['number'] = $state['number'];
$state['max'][ $state['sitemap-type'] ]['lastmod'] = $state['last-modified'];
update_option( 'jetpack-sitemap-state', $state );
}
/**
* Unlock the sitemap state.
*
* @access public
* @since 4.8.0
*/
public static function unlock() {
delete_transient( 'jetpack-sitemap-state-lock' );
}
/**
* Read the stored sitemap state. Returns false if the state is locked.
*
* @access public
* @since 4.8.0
*
* @return bool|array $args {
* @type string sitemap-type The type of sitemap to be generated.
* @type int last-added The largest index to be added to a generated sitemap page.
* @type int number The index of the last sitemap to be generated.
* @type string last-modified The latest timestamp seen.
* @type array max The latest index of each sitemap type seen.
* }
*/
public static function check_out() {
// See if the state is locked.
if ( true === get_transient( 'jetpack-sitemap-state-lock' ) ) {
// If it is, return false.
return false;
} else {
// Otherwise, lock the state for 15 minutes and then return it.
set_transient( 'jetpack-sitemap-state-lock', true, JP_SITEMAP_LOCK_INTERVAL );
return get_option( 'jetpack-sitemap-state', self::initial() );
}
}
/**
* Delete the stored state and lock.
*
* @access public
* @since 4.8.0
*/
public static function delete() {
delete_transient( 'jetpack-sitemap-state-lock' );
delete_option( 'jetpack-sitemap-state' );
}
}