function MigrationPluginManager::createInstances

File

core/modules/migrate/src/Plugin/MigrationPluginManager.php, line 100

Class

MigrationPluginManager

Plugin manager for migration plugins.

Namespace

Code

public function createInstances($migration_id, array $configuration = []) {
    if (empty($migration_id)) {
        $migration_id = array_keys($this->getDefinitions());
    }
    $factory = $this->getFactory();
    $migration_ids = (array) $migration_id;
    // We need to expand any derivative migrations. Derivative migrations are
    // calculated by migration derivers such as D6NodeDeriver. This allows
    // migrations to depend on the base id and then have a dependency on all
    // derivative migrations. For example, d6_comment depends on d6_node but
    // after we've expanded the dependencies it will depend on d6_node:page,
    // d6_node:story and so on, for other derivative migrations.
    $plugin_ids = $this->expandPluginIds($migration_ids);
    $instances = [];
    foreach ($plugin_ids as $plugin_id) {
        $instances[$plugin_id] = $factory->createInstance($plugin_id, $configuration[$plugin_id] ?? []);
    }
    // @todo Remove loop when the ability to call ::getMigrationDependencies()
    //   without expanding plugins is removed.
    foreach ($instances as $migration) {
        $migration->set('migration_dependencies', $migration->getMigrationDependencies(TRUE));
    }
    // Sort the migrations based on their dependencies.
    return $this->buildDependencyMigration($instances, []);
}