MigrateExecutable.php in Migrate Tools 8.5

Namespace

Drupal\migrate_tools

File

src/MigrateExecutable.php

<?php

namespace Drupal\migrate_tools;

use Drupal\migrate\Event\MigrateEvents;
use Drupal\migrate\Event\MigrateImportEvent;
use Drupal\migrate\Event\MigrateMapDeleteEvent;
use Drupal\migrate\Event\MigrateMapSaveEvent;
use Drupal\migrate\Event\MigratePreRowSaveEvent;
use Drupal\migrate\Event\MigrateRollbackEvent;
use Drupal\migrate\Event\MigrateRowDeleteEvent;
use Drupal\migrate\MigrateExecutable as MigrateExecutableBase;
use Drupal\migrate\MigrateMessageInterface;
use Drupal\migrate\Plugin\MigrateIdMapInterface;
use Drupal\migrate\Plugin\MigrationInterface;
use Drupal\migrate_plus\Event\MigrateEvents as MigratePlusEvents;
use Drupal\migrate_plus\Event\MigratePrepareRowEvent;

/**
 * Defines a migrate executable class for drush.
 */
class MigrateExecutable extends MigrateExecutableBase {

  /**
   * Counters of map statuses.
   *
   * @var array
   *   Set of counters, keyed by MigrateIdMapInterface::STATUS_* constant.
   */
  protected $saveCounters = [
    MigrateIdMapInterface::STATUS_FAILED => 0,
    MigrateIdMapInterface::STATUS_IGNORED => 0,
    MigrateIdMapInterface::STATUS_IMPORTED => 0,
    MigrateIdMapInterface::STATUS_NEEDS_UPDATE => 0,
  ];

  /**
   * Counter of map saves, used to detect the item limit threshold.
   *
   * @var int
   */
  protected $itemLimitCounter = 0;

  /**
   * Counter of map deletions.
   *
   * @var int
   */
  protected $deleteCounter = 0;

  /**
   * Maximum number of items to process in this migration.
   *
   * 0 indicates no limit is to be applied.
   *
   * @var int
   */
  protected $itemLimit = 0;

  /**
   * Frequency (in items) at which progress messages should be emitted.
   *
   * @var int
   */
  protected $feedback = 0;

  /**
   * List of specific source IDs to import.
   *
   * @var array
   */
  protected $idlist = [];

  /**
   * Count of number of items processed so far in this migration.
   *
   * @var int
   */
  protected $counter = 0;

  /**
   * Whether the destination item exists before saving.
   *
   * @var bool
   */
  protected $preExistingItem = FALSE;

  /**
   * List of event listeners we have registered.
   *
   * @var array
   */
  protected $listeners = [];

  /**
   * {@inheritdoc}
   */
  public function __construct(MigrationInterface $migration, MigrateMessageInterface $message, array $options = []) {
    parent::__construct($migration, $message);
    if (isset($options['limit'])) {
      $this->itemLimit = $options['limit'];
    }
    if (isset($options['feedback'])) {
      $this->feedback = $options['feedback'];
    }
    if (isset($options['sync'])) {
      $this->migration
        ->set('syncSource', $options['sync']);
    }
    $this->idlist = MigrateTools::buildIdList($options);
    $this->listeners[MigrateEvents::MAP_SAVE] = [
      $this,
      'onMapSave',
    ];
    $this->listeners[MigrateEvents::MAP_DELETE] = [
      $this,
      'onMapDelete',
    ];
    $this->listeners[MigrateEvents::POST_IMPORT] = [
      $this,
      'onPostImport',
    ];
    $this->listeners[MigrateEvents::POST_ROLLBACK] = [
      $this,
      'onPostRollback',
    ];
    $this->listeners[MigrateEvents::PRE_ROW_SAVE] = [
      $this,
      'onPreRowSave',
    ];
    $this->listeners[MigrateEvents::POST_ROW_DELETE] = [
      $this,
      'onPostRowDelete',
    ];
    $this->listeners[MigratePlusEvents::PREPARE_ROW] = [
      $this,
      'onPrepareRow',
    ];
    foreach ($this->listeners as $event => $listener) {
      $this
        ->getEventDispatcher()
        ->addListener($event, $listener);
    }
  }

  /**
   * Count up any map save events.
   *
   * @param \Drupal\migrate\Event\MigrateMapSaveEvent $event
   *   The map event.
   */
  public function onMapSave(MigrateMapSaveEvent $event) {

    // Only count saves for this migration.
    if ($event
      ->getMap()
      ->getQualifiedMapTableName() == $this->migration
      ->getIdMap()
      ->getQualifiedMapTableName()) {
      $fields = $event
        ->getFields();
      $this->itemLimitCounter++;

      // Distinguish between creation and update.
      if ($fields['source_row_status'] == MigrateIdMapInterface::STATUS_IMPORTED && $this->preExistingItem) {
        $this->saveCounters[MigrateIdMapInterface::STATUS_NEEDS_UPDATE]++;
      }
      else {
        $this->saveCounters[$fields['source_row_status']]++;
      }
    }
  }

  /**
   * Count up any rollback events.
   *
   * @param \Drupal\migrate\Event\MigrateMapDeleteEvent $event
   *   The map event.
   */
  public function onMapDelete(MigrateMapDeleteEvent $event) {
    $this->deleteCounter++;
  }

  /**
   * Return the number of items created.
   *
   * @return int
   *   The number of items created.
   */
  public function getCreatedCount() {
    return $this->saveCounters[MigrateIdMapInterface::STATUS_IMPORTED];
  }

  /**
   * Return the number of items updated.
   *
   * @return int
   *   The updated count.
   */
  public function getUpdatedCount() {
    return $this->saveCounters[MigrateIdMapInterface::STATUS_NEEDS_UPDATE];
  }

  /**
   * Return the number of items ignored.
   *
   * @return int
   *   The ignored count.
   */
  public function getIgnoredCount() {
    return $this->saveCounters[MigrateIdMapInterface::STATUS_IGNORED];
  }

  /**
   * Return the number of items that failed.
   *
   * @return int
   *   The failed count.
   */
  public function getFailedCount() {
    return $this->saveCounters[MigrateIdMapInterface::STATUS_FAILED];
  }

  /**
   * Return the total number of items processed.
   *
   * Note that STATUS_NEEDS_UPDATE is not counted, since this is typically set
   * on stubs created as side effects, not on the primary item being imported.
   *
   * @return int
   *   The processed count.
   */
  public function getProcessedCount() {
    return $this->saveCounters[MigrateIdMapInterface::STATUS_IMPORTED] + $this->saveCounters[MigrateIdMapInterface::STATUS_NEEDS_UPDATE] + $this->saveCounters[MigrateIdMapInterface::STATUS_IGNORED] + $this->saveCounters[MigrateIdMapInterface::STATUS_FAILED];
  }

  /**
   * Return the number of items rolled back.
   *
   * @return int
   *   The rollback count.
   */
  public function getRollbackCount() {
    return $this->deleteCounter;
  }

  /**
   * Reset all the per-status counters to 0.
   */
  protected function resetCounters() {
    foreach ($this->saveCounters as $status => $count) {
      $this->saveCounters[$status] = 0;
    }
    $this->deleteCounter = 0;
  }

  /**
   * React to migration completion.
   *
   * @param \Drupal\migrate\Event\MigrateImportEvent $event
   *   The map event.
   */
  public function onPostImport(MigrateImportEvent $event) {
    $migrate_last_imported_store = \Drupal::keyValue('migrate_last_imported');
    $migrate_last_imported_store
      ->set($event
      ->getMigration()
      ->id(), round(\Drupal::time()
      ->getCurrentMicroTime() * 1000));
    $this
      ->progressMessage();
    $this
      ->removeListeners();
  }

  /**
   * Clean up all our event listeners.
   */
  protected function removeListeners() {
    foreach ($this->listeners as $event => $listener) {

      // Don't remove the listener for the events that are currently being
      // dispatched.
      if ($event !== MigrateEvents::POST_IMPORT && $event !== MigrateEvents::POST_ROLLBACK) {
        $this
          ->getEventDispatcher()
          ->removeListener($event, $listener);
      }
    }
  }

  /**
   * Emit information on what we've done.
   *
   * Either since the last feedback or the beginning of this migration.
   *
   * @param bool $done
   *   TRUE if this is the last items to process. Otherwise FALSE.
   */
  protected function progressMessage($done = TRUE) {
    $processed = $this
      ->getProcessedCount();
    if ($done) {
      $singular_message = "Processed 1 item (@created created, @updated updated, @failures failed, @ignored ignored) - done with '@name'";
      $plural_message = "Processed @numitems items (@created created, @updated updated, @failures failed, @ignored ignored) - done with '@name'";
    }
    else {
      $singular_message = "Processed 1 item (@created created, @updated updated, @failures failed, @ignored ignored) - continuing with '@name'";
      $plural_message = "Processed @numitems items (@created created, @updated updated, @failures failed, @ignored ignored) - continuing with '@name'";
    }
    $this->message
      ->display(\Drupal::translation()
      ->formatPlural($processed, $singular_message, $plural_message, [
      '@numitems' => $processed,
      '@created' => $this
        ->getCreatedCount(),
      '@updated' => $this
        ->getUpdatedCount(),
      '@failures' => $this
        ->getFailedCount(),
      '@ignored' => $this
        ->getIgnoredCount(),
      '@name' => $this->migration
        ->id(),
    ]));
  }

  /**
   * React to rollback completion.
   *
   * @param \Drupal\migrate\Event\MigrateRollbackEvent $event
   *   The map event.
   */
  public function onPostRollback(MigrateRollbackEvent $event) {
    $migrate_last_imported_store = \Drupal::keyValue('migrate_last_imported');
    $migrate_last_imported_store
      ->set($event
      ->getMigration()
      ->id(), FALSE);
    $this
      ->rollbackMessage();

    // If this is a sync import, then don't remove listeners or post import will
    // not be executed. Leave it to post import to remove listeners.
    if (empty($event
      ->getMigration()->syncSource)) {
      $this
        ->removeListeners();
    }
  }

  /**
   * Emit information on what we've done.
   *
   * Either since the last feedback or the beginning of this migration.
   *
   * @param bool $done
   *   TRUE if this is the last items to rollback. Otherwise FALSE.
   */
  protected function rollbackMessage($done = TRUE) {
    $rolled_back = $this
      ->getRollbackCount();
    if ($done) {
      $singular_message = "Rolled back 1 item - done with '@name'";
      $plural_message = "Rolled back @numitems items - done with '@name'";
    }
    else {
      $singular_message = "Rolled back 1 item - continuing with '@name'";
      $plural_message = "Rolled back @numitems items - continuing with '@name'";
    }
    $this->message
      ->display(\Drupal::translation()
      ->formatPlural($rolled_back, $singular_message, $plural_message, [
      '@numitems' => $rolled_back,
      '@name' => $this->migration
        ->id(),
    ]));
  }

  /**
   * React to an item about to be imported.
   *
   * @param \Drupal\migrate\Event\MigratePreRowSaveEvent $event
   *   The pre-save event.
   */
  public function onPreRowSave(MigratePreRowSaveEvent $event) {
    $id_map = $event
      ->getRow()
      ->getIdMap();
    if (!empty($id_map['destid1'])) {
      $this->preExistingItem = TRUE;
    }
    else {
      $this->preExistingItem = FALSE;
    }
  }

  /**
   * React to item rollback.
   *
   * @param \Drupal\migrate\Event\MigrateRowDeleteEvent $event
   *   The post-save event.
   */
  public function onPostRowDelete(MigrateRowDeleteEvent $event) {
    if ($this->feedback && $this->deleteCounter && $this->deleteCounter % $this->feedback == 0) {
      $this
        ->rollbackMessage(FALSE);
      $this
        ->resetCounters();
    }
  }

  /**
   * React to a new row.
   *
   * @param \Drupal\migrate_plus\Event\MigratePrepareRowEvent $event
   *   The prepare-row event.
   *
   * @throws \Drupal\migrate\MigrateSkipRowException
   */
  public function onPrepareRow(MigratePrepareRowEvent $event) {
    if ($this->feedback && $this->counter && $this->counter % $this->feedback == 0) {
      $this
        ->progressMessage(FALSE);
      $this
        ->resetCounters();
    }
    $this->counter++;
    if ($this->itemLimit && $this->itemLimitCounter + 1 >= $this->itemLimit) {
      $event
        ->getMigration()
        ->interruptMigration(MigrationInterface::RESULT_COMPLETED);
    }
  }

  /**
   * {@inheritdoc}
   */
  protected function getSource() {
    return new SourceFilter(parent::getSource(), $this->idlist);
  }

  /**
   * {@inheritdoc}
   */
  protected function getIdMap() {
    return new IdMapFilter(parent::getIdMap(), $this->idlist);
  }

}

Classes

Name	Description
MigrateExecutable	Defines a migrate executable class for drush.