Same name in other branches
  1. 5.0.x advagg_mod/src/EventSubscriber/InitSubscriber.php \Drupal\advagg_mod\EventSubscriber\InitSubscriber::onEvent()
  2. 8.x-2.x advagg_bundler/src/EventSubscriber/InitSubscriber.php \Drupal\advagg_bundler\EventSubscriber\InitSubscriber::onEvent()
  3. 8.x-2.x advagg_mod/src/EventSubscriber/InitSubscriber.php \Drupal\advagg_mod\EventSubscriber\InitSubscriber::onEvent()
  4. 8.x-3.x advagg_mod/src/EventSubscriber/InitSubscriber.php \Drupal\advagg_mod\EventSubscriber\InitSubscriber::onEvent()
  5. 8.x-4.x advagg_mod/src/EventSubscriber/InitSubscriber.php \Drupal\advagg_mod\EventSubscriber\InitSubscriber::onEvent()

Synchronize global_counter variable between sites.

Only if using unified_multisite_dir.

File

advagg_mod/src/EventSubscriber/InitSubscriber.php, line 129

Class

InitSubscriber
Perform initialization tasks for advagg_mod.

Namespace

Drupal\advagg_mod\EventSubscriber

Code

public function onEvent() {
    $multisiteDir = $this->config
        ->get('unified_multisite_dir') ?? '';
    $dir = rtrim($multisiteDir, '/');
    if (empty($dir) || !file_exists($dir) || !is_dir($dir)) {
        return;
    }
    $counter_filename = $dir . '/_global_counter';
    $local_counter = $this->advaggConfig
        ->get('global_counter');
    if (!file_exists($counter_filename)) {
        $this->fileSystem
            ->saveData($local_counter, $counter_filename, FileSystemInterface::EXISTS_REPLACE);
    }
    else {
        $shared_counter = (int) file_get_contents($counter_filename);
        if ($shared_counter == $local_counter) {
            // Counters are the same, return.
            return;
        }
        elseif ($shared_counter < $local_counter) {
            // Local counter is higher, update saved file and return.
            $this->fileSystem
                ->saveData($local_counter, $counter_filename, FileSystemInterface::EXISTS_REPLACE);
            return;
        }
        elseif ($shared_counter > $local_counter) {
            // Shared counter is higher, update local copy and return.
            $this->advaggConfig
                ->set('global_counter', $shared_counter)
                ->save();
            return;
        }
    }
}