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<?php |
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/* |
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* This file is part of the ManageWP Worker plugin. |
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* |
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* (c) ManageWP LLC <contact@managewp.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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/** |
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* Base component for ManageWP Worker migrations. |
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* Renamed options and those that changed their format from one plugin version to another should be handled here. |
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*/ |
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class MWP_Migration_Migration |
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{ |
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/** |
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* Upon plugin activation this version is persisted to the database. |
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* It is also checked against on every master request. |
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*/ |
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const VERSION = 2; |
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|
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/** |
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* @var MWP_WordPress_Context |
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*/ |
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private $context; |
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|
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/** |
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* Migration version => migration name (method). |
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* The last migration index MUST be the same as the VERSION constant above. |
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* |
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* @var array |
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*/ |
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private static $migrations = array( |
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1 => 'migrateBackupFileNames', |
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2 => 'setDefaultOptionValues', |
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); |
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|
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public function __construct(MWP_WordPress_Context $context) |
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{ |
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$this->context = $context; |
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} |
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|
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private function acquireLock($lockName, $ttl = 3600) |
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{ |
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$wpdb = $this->context->getDb(); |
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$lockRow = $wpdb->get_row("SELECT option_value FROM {$wpdb->prefix}options WHERE option_name = '$lockName'"); |
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$currentTimestamp = $this->context->getCurrentTime()->format('U'); |
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|
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if ($lockRow) { |
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/** @noinspection PhpUndefinedFieldInspection */ |
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if ((int) $lockRow->option_value + $ttl > $currentTimestamp) { |
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return false; |
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} else { |
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$this->releaseLock($lockName); |
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} |
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} |
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|
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$locked = $wpdb->query("INSERT INTO {$wpdb->prefix}options SET option_name = '$lockName', option_value = '$currentTimestamp'"); |
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|
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return (bool) $locked; |
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} |
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|
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private function releaseLock($lockName) |
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{ |
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$wpdb = $this->context->getDb(); |
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$released = $wpdb->query("DELETE FROM {$wpdb->prefix}options WHERE option_name = '$lockName'"); |
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|
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return (bool) $released; |
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} |
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|
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public function migrate() |
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{ |
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$wpdb = $this->context->getDb(); |
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$lockName = 'worker_migration_lock'; |
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|
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$version = (int) $wpdb->get_var("SELECT option_value FROM {$wpdb->prefix}options WHERE option_name = 'worker_migration_version'"); |
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$currentVersion = self::VERSION; |
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|
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if ($version >= $currentVersion) { |
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return; |
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} |
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|
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if (!$this->acquireLock($lockName)) { |
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return; |
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} |
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|
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foreach (self::$migrations as $migrationVersion => $migrationName) { |
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if ($version < $migrationVersion) { |
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$this->$migrationName(); |
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$wpdb->query("INSERT INTO {$wpdb->prefix}options SET option_name = 'worker_migration_version', option_value = '$migrationVersion' ON DUPLICATE KEY UPDATE option_value = '$migrationVersion'"); |
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} |
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} |
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|
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$this->releaseLock($lockName); |
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} |
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|
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private function setDefaultOptionValues() |
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{ |
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if (!$this->context->optionGet('mwp_recovering')) { |
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$this->context->optionSet('mwp_recovering', ''); |
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} |
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|
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if (!$this->context->optionGet('mwp_incremental_update_active')) { |
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$this->context->optionSet('mwp_incremental_update_active', ''); |
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} |
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|
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if (!$this->context->optionGet('mwp_core_autoupdate')) { |
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$this->context->optionSet('mwp_core_autoupdate', ''); |
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} |
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|
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if (!$this->context->optionGet('mwp_container_parameters')) { |
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$this->context->optionSet('mwp_container_parameters', array()); |
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} |
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|
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if (!$this->context->optionGet('mwp_container_site_parameters')) { |
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$this->context->optionSet('mwp_container_site_parameters', array()); |
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} |
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|
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if (!$this->context->optionGet('_worker_nossl_key')) { |
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$this->context->optionSet('_worker_nossl_key', ''); |
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} |
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|
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if (!$this->context->optionGet('_worker_public_key')) { |
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$this->context->optionSet('_worker_public_key', ''); |
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} |
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|
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if (!$this->context->optionGet('mwp_maintenace_mode')) { |
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$this->context->optionSet('mwp_maintenace_mode', array()); |
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} |
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} |
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|
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private function migrateBackupFileNames() |
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{ |
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$tasks = (array) $this->context->optionGet('mwp_backup_tasks'); |
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$changed = false; |
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|
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foreach ($tasks as $taskName => $taskInfo) { |
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if (!isset($taskInfo['task_results']) || !is_array($taskInfo['task_results'])) { |
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continue; |
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} |
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foreach ($taskInfo['task_results'] as $resultId => $taskResult) { |
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if (!isset($taskResult['server']['file_path']) || !file_exists($taskResult['server']['file_path'])) { |
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continue; |
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} |
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$filePath = $taskResult['server']['file_path']; |
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$hash = $this->generateRandomHash(filesize($filePath)); |
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$newFilePath = preg_replace('{_[a-z0-9]{32}\.zip$}', sprintf('_%s.zip', $hash), $filePath); |
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$renamed = rename($filePath, $newFilePath); |
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if (!$renamed) { |
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continue; |
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} |
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$changed = true; |
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$oldUrl = $tasks[$taskName]['task_results'][$resultId]['server']['file_url']; |
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$newUrl = preg_replace('{_[a-z0-9]{32}\.zip$}', sprintf('_%s.zip', $hash), $oldUrl); |
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|
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$tasks[$taskName]['task_results'][$resultId]['server']['file_path'] = $newFilePath; |
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$tasks[$taskName]['task_results'][$resultId]['server']['file_url'] = $newUrl; |
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} |
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} |
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|
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if (!$changed) { |
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return; |
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} |
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|
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$this->context->optionSet('mwp_backup_tasks', $tasks); |
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} |
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|
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private function generateRandomHash($seed) |
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{ |
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return str_shuffle(md5(mt_rand().$seed)); |
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} |
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} |
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|
