Aggregator processors and parsers are now plugins

After aggregator fetchers, processors and parsers have moved from hook implementations to plugins in Drupal 8.

Parsers

Class should be in {module}/src/Plugin/aggregator/parser/{Parser}.php and implement the ParserInterface

• hook_aggregator_parse_info has been replaced by annotations
• hook_aggregator_parse has been replaced by \Drupal\aggregator\Plugin\ParserInterface::parse()

D7:

/**
 * Implements hook_aggregator_parse_info().
 */
function aggregator_aggregator_parse_info() {
  return array(
    'title' => t('Default parser'),
    'description' => t('Parses RSS, Atom and RDF feeds.'),
  );
}

/**
 * Implements hook_aggregator_parse().
 */
function aggregator_aggregator_parse($feed) {
  // Do stuff.
}

D8:

/**
 * Defines a default parser implementation.
 *
 * Parses RSS, Atom and RDF feeds.
 *
 * @Plugin(
 *   id = "aggregator",
 *   title = @Translation("Default parser"),
 *   description = @Translation("Default parser for RSS, Atom and RDF feeds.")
 * )
 */
class DefaultParser implements ParserInterface {


  /**
   * Implements \Drupal\aggregator\Plugin\ParserInterface::parse().
   */
  public function parse(FeedInterface $feed) {
      // Do stuff.
  }
}

Processors

Class should be in {module}/src/Plugin/aggregator/processor/{Processor}.php and implement the ProcessorInterface

• hook_aggregator_process_info has been replaced by annotations
• hook_aggregator_process has been replaced by \Drupal\aggregator\Plugin\ProcessorInterface::process().
• hook_aggregator_remove has been replaced by \Drupal\aggregator\Plugin\ProcessorInterface::delete().
• aggregator_expire() has been removed in favor of \Drupal\aggregator\Plugin\ProcessorInterface::postProcess().

D7:

/**
 * Implements hook_aggregator_process_info().
 */
function aggregator_aggregator_process_info() {
  return array(
    'title' => t('Default processor'),
    'description' => t('Creates lightweight records from feed items.'),
  );
}

/**
 * Implements hook_aggregator_process().
 */
function aggregator_aggregator_process($feed) {
    // Do stuff.
}

/**
 * Implements hook_aggregator_remove().
 */
function aggregator_aggregator_remove($feed) {
    // Do stuff.
}

/**
 * Expires items from a feed depending on expiration settings.
 *
 * @param $feed
 *   Object describing feed.
 */
function aggregator_expire($feed) {
    // Do stuff.
}

D8:

/**
 * Defines a default processor implementation.
 *
 * Creates lightweight records from feed items.
 *
 * @Plugin(
 *   id = "aggregator",
 *   title = @Translation("Default processor"),
 *   description = @Translation("Creates lightweight records from feed items.")
 * )
 */
class DefaultProcessor extends PluginBase implements ProcessorInterface {

  /**
   * Implements \Drupal\aggregator\Plugin\ProcessorInterface::process().
   */
  public function process(FeedInterface $feed) {
     // Do stuff.
  }

  /**
   * Implements \Drupal\aggregator\Plugin\ProcessorInterface::delete().
   */
  public function delete(FeedInterface $feed) {
      // Do stuff.
  }

  /**
   * Implements \Drupal\aggregator\Plugin\ProcessorInterface::postProcess().
   *
   * Expires items from a feed depending on expiration settings.
   */
  public function postProcess(FeedInterface $feed) {
      // Do stuff.
  }
}