Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\taxonomy\Plugin\migrate;
Chris@0: 
Chris@0: use Drupal\Component\Plugin\Derivative\DeriverBase;
Chris@0: use Drupal\Core\Database\DatabaseExceptionWrapper;
Chris@0: use Drupal\Core\Plugin\Discovery\ContainerDeriverInterface;
Chris@0: use Drupal\migrate\Exception\RequirementsException;
Chris@0: use Drupal\migrate\Plugin\MigrationDeriverTrait;
Chris@18: use Drupal\migrate_drupal\FieldDiscoveryInterface;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Deriver for Drupal 7 taxonomy term migrations based on vocabularies.
Chris@0:  */
Chris@0: class D7TaxonomyTermDeriver extends DeriverBase implements ContainerDeriverInterface {
Chris@0:   use MigrationDeriverTrait;
Chris@0: 
Chris@0:   /**
Chris@0:    * The base plugin ID this derivative is for.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $basePluginId;
Chris@0: 
Chris@0:   /**
Chris@18:    * The migration field discovery service.
Chris@0:    *
Chris@18:    * @var \Drupal\migrate_drupal\FieldDiscoveryInterface
Chris@0:    */
Chris@18:   protected $fieldDiscovery;
Chris@0: 
Chris@0:   /**
Chris@0:    * D7TaxonomyTermDeriver constructor.
Chris@0:    *
Chris@0:    * @param string $base_plugin_id
Chris@0:    *   The base plugin ID for the plugin ID.
Chris@18:    * @param \Drupal\migrate_drupal\FieldDiscoveryInterface $field_discovery
Chris@18:    *   The migration field discovery service.
Chris@0:    */
Chris@18:   public function __construct($base_plugin_id, FieldDiscoveryInterface $field_discovery) {
Chris@0:     $this->basePluginId = $base_plugin_id;
Chris@18:     $this->fieldDiscovery = $field_discovery;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container, $base_plugin_id) {
Chris@0:     return new static(
Chris@0:       $base_plugin_id,
Chris@18:       $container->get('migrate_drupal.field_discovery')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getDerivativeDefinitions($base_plugin_definition) {
Chris@0: 
Chris@0:     $vocabulary_source_plugin = static::getSourcePlugin('d7_taxonomy_vocabulary');
Chris@0:     try {
Chris@0:       $vocabulary_source_plugin->checkRequirements();
Chris@0:     }
Chris@0:     catch (RequirementsException $e) {
Chris@0:       // If the d7_taxonomy_vocabulary requirements failed, that means we do not
Chris@0:       // have a Drupal source database configured - there is nothing to
Chris@0:       // generate.
Chris@0:       return $this->derivatives;
Chris@0:     }
Chris@0: 
Chris@0:     try {
Chris@0:       foreach ($vocabulary_source_plugin as $row) {
Chris@0:         $bundle = $row->getSourceProperty('machine_name');
Chris@0:         $values = $base_plugin_definition;
Chris@0: 
Chris@0:         $values['label'] = t('@label (@type)', [
Chris@0:           '@label' => $values['label'],
Chris@0:           '@type' => $row->getSourceProperty('name'),
Chris@0:         ]);
Chris@0:         $values['source']['bundle'] = $bundle;
Chris@0:         $values['destination']['default_bundle'] = $bundle;
Chris@0: 
Chris@18:         /** @var \Drupal\migrate\Plugin\MigrationInterface $migration */
Chris@0:         $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($values);
Chris@18:         $this->fieldDiscovery->addBundleFieldProcesses($migration, 'taxonomy_term', $bundle);
Chris@0:         $this->derivatives[$bundle] = $migration->getPluginDefinition();
Chris@0:       }
Chris@0:     }
Chris@0:     catch (DatabaseExceptionWrapper $e) {
Chris@0:       // Once we begin iterating the source plugin it is possible that the
Chris@0:       // source tables will not exist. This can happen when the
Chris@0:       // MigrationPluginManager gathers up the migration definitions but we do
Chris@0:       // not actually have a Drupal 7 source database.
Chris@0:     }
Chris@0: 
Chris@0:     return $this->derivatives;
Chris@0:   }
Chris@0: 
Chris@0: }