/**
* {@inheritdoc}
*/
public function rollback()
{
// Only begin the rollback operation if the migration is currently idle.
if ($this->migration->getStatus() !== MigrationInterface::STATUS_IDLE) {
$this->message->display($this->t('Migration @id is busy with another operation: @status', ['@id' => $this->migration->id(), '@status' => $this->t($this->migration->getStatusLabel())]), 'error');
return MigrationInterface::RESULT_FAILED;
}
// Announce that rollback is about to happen.
$this->getEventDispatcher()->dispatch(MigrateEvents::PRE_ROLLBACK, new MigrateRollbackEvent($this->migration));
// Optimistically assume things are going to work out; if not, $return will be
// updated to some other status.
$return = MigrationInterface::RESULT_COMPLETED;
$this->migration->setStatus(MigrationInterface::STATUS_ROLLING_BACK);
$id_map = $this->migration->getIdMap();
$destination = $this->migration->getDestinationPlugin();
// Loop through each row in the map, and try to roll it back.
foreach ($id_map as $map_row) {
$destination_key = $id_map->currentDestination();
if ($destination_key) {
$this->getEventDispatcher()->dispatch(MigrateEvents::PRE_ROW_DELETE, new MigrateRowDeleteEvent($this->migration, $destination_key));
$destination->rollback($destination_key);
$this->getEventDispatcher()->dispatch(MigrateEvents::POST_ROW_DELETE, new MigrateRowDeleteEvent($this->migration, $destination_key));
// We're now done with this row, so remove it from the map.
$id_map->deleteDestination($destination_key);
}
// Check for memory exhaustion.
if (($return = $this->checkStatus()) != MigrationInterface::RESULT_COMPLETED) {
break;
}
// If anyone has requested we stop, return the requested result.
if ($this->migration->getStatus() == MigrationInterface::STATUS_STOPPING) {
$return = $this->migration->getMigrationResult();
break;
}
}
// If rollback completed successfully, reset the high water mark.
if ($return == MigrationInterface::RESULT_COMPLETED) {
$this->migration->saveHighWater(NULL);
}
// Notify modules that rollback attempt was complete.
$this->migration->setMigrationResult($return);
$this->getEventDispatcher()->dispatch(MigrateEvents::POST_ROLLBACK, new MigrateRollbackEvent($this->migration));
$this->migration->setStatus(MigrationInterface::STATUS_IDLE);
return $return;
}
/**
* {@inheritdoc}
*/
public function import()
{
// Only begin the import operation if the migration is currently idle.
if ($this->migration->getStatus() !== MigrationInterface::STATUS_IDLE) {
$this->message->display($this->t('Migration @id is busy with another operation: @status', array('@id' => $this->migration->id(), '@status' => $this->t($this->migration->getStatusLabel()))), 'error');
return MigrationInterface::RESULT_FAILED;
}
$this->getEventDispatcher()->dispatch(MigrateEvents::PRE_IMPORT, new MigrateImportEvent($this->migration));
// Knock off migration if the requirements haven't been met.
try {
$this->migration->checkRequirements();
} catch (RequirementsException $e) {
$this->message->display($this->t('Migration @id did not meet the requirements. @message @requirements', array('@id' => $this->migration->id(), '@message' => $e->getMessage(), '@requirements' => $e->getRequirementsString())), 'error');
return MigrationInterface::RESULT_FAILED;
}
$this->migration->setStatus(MigrationInterface::STATUS_IMPORTING);
$return = MigrationInterface::RESULT_COMPLETED;
$source = $this->getSource();
$id_map = $this->migration->getIdMap();
try {
$source->rewind();
} catch (\Exception $e) {
$this->message->display($this->t('Migration failed with source plugin exception: !e', array('!e' => $e->getMessage())), 'error');
$this->migration->setStatus(MigrationInterface::STATUS_IDLE);
return MigrationInterface::RESULT_FAILED;
}
$destination = $this->migration->getDestinationPlugin();
while ($source->valid()) {
$row = $source->current();
if ($this->sourceIdValues = $row->getSourceIdValues()) {
// Wipe old messages, and save any new messages.
$id_map->delete($this->sourceIdValues, TRUE);
$this->saveQueuedMessages();
}
try {
$this->processRow($row);
$save = TRUE;
} catch (MigrateSkipRowException $e) {
$id_map->saveIdMapping($row, array(), MigrateIdMapInterface::STATUS_IGNORED, $this->rollbackAction);
$save = FALSE;
}
if ($save) {
try {
$this->getEventDispatcher()->dispatch(MigrateEvents::PRE_ROW_SAVE, new MigratePreRowSaveEvent($this->migration, $row));
$destination_id_values = $destination->import($row, $id_map->lookupDestinationId($this->sourceIdValues));
$this->getEventDispatcher()->dispatch(MigrateEvents::POST_ROW_SAVE, new MigratePostRowSaveEvent($this->migration, $row, $destination_id_values));
if ($destination_id_values) {
// We do not save an idMap entry for config.
if ($destination_id_values !== TRUE) {
$id_map->saveIdMapping($row, $destination_id_values, $this->sourceRowStatus, $this->rollbackAction);
}
} else {
$id_map->saveIdMapping($row, array(), MigrateIdMapInterface::STATUS_FAILED, $this->rollbackAction);
if (!$id_map->messageCount()) {
$message = $this->t('New object was not saved, no error provided');
$this->saveMessage($message);
$this->message->display($message);
}
}
} catch (MigrateException $e) {
$this->migration->getIdMap()->saveIdMapping($row, array(), $e->getStatus(), $this->rollbackAction);
$this->saveMessage($e->getMessage(), $e->getLevel());
$this->message->display($e->getMessage(), 'error');
} catch (\Exception $e) {
$this->migration->getIdMap()->saveIdMapping($row, array(), MigrateIdMapInterface::STATUS_FAILED, $this->rollbackAction);
$this->handleException($e);
}
}
if ($high_water_property = $this->migration->get('highWaterProperty')) {
$this->migration->saveHighWater($row->getSourceProperty($high_water_property['name']));
}
// Reset row properties.
unset($sourceValues, $destinationValues);
$this->sourceRowStatus = MigrateIdMapInterface::STATUS_IMPORTED;
// Check for memory exhaustion.
if (($return = $this->checkStatus()) != MigrationInterface::RESULT_COMPLETED) {
break;
}
// If anyone has requested we stop, return the requested result.
if ($this->migration->getStatus() == MigrationInterface::STATUS_STOPPING) {
$return = $this->migration->getMigrationResult();
break;
}
try {
$source->next();
} catch (\Exception $e) {
$this->message->display($this->t('Migration failed with source plugin exception: !e', array('!e' => $e->getMessage())), 'error');
$this->migration->setStatus(MigrationInterface::STATUS_IDLE);
return MigrationInterface::RESULT_FAILED;
}
}
$this->migration->setMigrationResult($return);
$this->getEventDispatcher()->dispatch(MigrateEvents::POST_IMPORT, new MigrateImportEvent($this->migration));
$this->migration->setStatus(MigrationInterface::STATUS_IDLE);
return $return;
}
