function CheckpointStorage::checkpoint

Overrides CheckpointStorageInterface::checkpoint

File

core/lib/Drupal/Core/Config/Checkpoint/CheckpointStorage.php, line 252

Class

CheckpointStorage

Provides a config storage that can make checkpoints.

Namespace

Code

public function checkpoint(string|\Stringable $label) : Checkpoint {
    // Generate a new ID based on the state of the current active checkpoint.
    $active_checkpoint = $this->checkpoints
        ->getActiveCheckpoint();
    if (!$active_checkpoint instanceof Checkpoint) {
        // @todo https://www.drupal.org/i/3408525 Consider options for generating
        //   a real fingerprint.
        $id = hash('sha1', random_bytes(32));
        return $this->checkpoints
            ->add($id, $label);
    }
    // Determine if we need to create a new checkpoint by checking if
    // configuration has changed since the last checkpoint.
    $collections = $this->getAllCollectionNames();
    $collections[] = StorageInterface::DEFAULT_COLLECTION;
    foreach ($collections as $collection) {
        $current_checkpoint_data[$collection] = $this->getKeyValue($active_checkpoint->id, $collection)
            ->getAll();
        // Remove the collections key because it is irrelevant.
        unset($current_checkpoint_data[$collection][static::CONFIG_COLLECTION_KEY]);
        // If there is no data in the collection then there is no need to hash
        // the empty array.
        if (empty($current_checkpoint_data[$collection])) {
            unset($current_checkpoint_data[$collection]);
        }
    }
    if (!empty($current_checkpoint_data)) {
        // Use json_encode() here because it is both quicker and results in
        // smaller output than serialize().
        $id = hash('sha1', ($active_checkpoint->parent ?? '') . json_encode($current_checkpoint_data));
        return $this->checkpoints
            ->add($id, $label);
    }
    $this->logger?->notice('A backup checkpoint was not created because nothing has changed since the "{active}" checkpoint was created.', [
        'active' => $active_checkpoint->label,
    ]);
    return $active_checkpoint;
}