queue_unique.install in Queue Unique 8.2

File

queue_unique.install

<?php

use Drupal\queue_unique\UniqueDatabaseQueue;

/**
 * Migrate existing queue data to a new table.
 */
function queue_unique_update_8001() {
  $connection = \Drupal::database();
  if (!$connection
    ->schema()
    ->tableExists(UniqueDatabaseQueue::TABLE_NAME)) {
    return 'Queue table does not exist, nothing to do';
  }
  $existing_count = $connection
    ->select(UniqueDatabaseQueue::TABLE_NAME)
    ->countQuery()
    ->execute()
    ->fetchField();
  if (!$existing_count) {
    $connection
      ->schema()
      ->dropTable(UniqueDatabaseQueue::TABLE_NAME);
    return 'No items were in the existing queue table. Table dropped.';
  }
  $temp_table = UniqueDatabaseQueue::TABLE_NAME . '_temp';
  $connection
    ->schema()
    ->renameTable(UniqueDatabaseQueue::TABLE_NAME, $temp_table);

  /** @var \Drupal\queue_unique\UniqueQueueDatabaseFactory $queue_factory */
  $queue_factory = \Drupal::service('queue_unique.database');
  $queue = $queue_factory
    ->get(__FUNCTION__);

  // Add a dummy item to the queue so the new table is created.
  $queue
    ->createQueue();
  $queue
    ->createItem([
    'test',
  ]);
  $item = $queue
    ->claimItem();
  $queue
    ->deleteItem($item);
  $query = $connection
    ->select($temp_table, 't');
  $query
    ->fields('t', [
    'item_id',
    'name',
    'data',
    'expire',
    'created',
  ]);
  $result = $query
    ->execute();
  $result
    ->setFetchMode(\PDO::FETCH_ASSOC);
  foreach ($result as $row) {
    $row['hash'] = UniqueDatabaseQueue::hash($row['name'], $row['data']);
    $query = $connection
      ->insert(UniqueDatabaseQueue::TABLE_NAME);
    $query
      ->fields($row);
    $query
      ->execute();
  }
  $connection
    ->schema()
    ->dropTable($temp_table);
  return "Migrated {$existing_count} items from the old queue table to the new table.";
}

Functions

Name	Description
queue_unique_update_8001	Migrate existing queue data to a new table.