Events 

All events are available in the Oro\Bundle\ImportExportBundle\Event\Events class.

AFTER_ENTITY_PAGE_LOADED

This event occurs after the entity page is loaded in the iterator. It is used to modify rows.

BEFORE_NORMALIZE_ENTITY

This event occurs before the entity is normalized. It is used to change the entity data or prefill the normalized data before normalization.

AFTER_NORMALIZE_ENTITY

This event occurs after the entity is normalized. It is used to change the normalized data.

BEFORE_DENORMALIZE_ENTITY

This event occurs before the entity is denormalized. It is used to prefill the denormalized data.

AFTER_DENORMALIZE_ENTITY

This event occurs after the entity is denormalized. It is used to change the denormalized data.

AFTER_LOAD_ENTITY_RULES_AND_BACKEND_HEADERS

This event occurs after the rules and backend headers are loaded. It is used to modify the rules and headers, and add new ones.

AFTER_LOAD_TEMPLATE_FIXTURES

This event occurs after the template fixtures are loaded. It is used to modify the fixtures.

BEFORE_EXPORT_FORMAT_CONVERSION

This event occurs before the data is converted into the export format. It is used to modify the record before the conversion begins.

AFTER_EXPORT_FORMAT_CONVERSION

This event occurs after the data is converted into the export format. It is used to modify the result after the conversion ends.

BEFORE_IMPORT_FORMAT_CONVERSION

This event occurs before the data is converted into the import format. It is used to modify the record before the conversion begins.

AFTER_IMPORT_FORMAT_CONVERSION

This event occurs after the data is converted into the export format. It is used to modify the result after the conversion ends.

AFTER_JOB_EXECUTION

This event occurs after a job is processed. It is used to perform some actions after the job is processed. For example, clean cache.

Strategy Events 

All strategy events are available in the Oro\Bundle\ImportExportBundle\Event\StrategyEvent class.

Usage Example:

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Oro\Bundle\ImportExportBundle\Event\StrategyEvent;

class CustomImportExportSubscriber implements EventSubscriberInterface {
    public static function getSubscribedEvents()
    {
        return [
            StrategyEvent::PROCESS_BEFORE => 'beforeImportStrategy',
            StrategyEvent::PROCESS_AFTER => 'afterImportStrategy',
        ];
    }

    public function beforeImportStrategy(StrategyEvent $event)
    {
        //YOUR IMPLEMENTATION
    }

    public function afterImportStrategy(StrategyEvent $event)
    {
        //YOUR IMPLEMENTATION
    }
}

PROCESS_BEFORE

This event occurs just before the entity strategy is run. It is used to prepare the entity before it is processed by the strategy.

PROCESS_AFTER

This event occurs after the job of the entity strategy is finished. It is used to provide additional validation of the entity.