function MigrationPluginManager::buildDependencyMigration

File

core/modules/migrate/src/Plugin/MigrationPluginManager.php, line 159

Class

MigrationPluginManager

Plugin manager for migration plugins.

Namespace

Code

public function buildDependencyMigration(array $migrations, array $dynamic_ids) {
    // Migration dependencies can be optional or required. If an optional
    // dependency does not run, the current migration is still OK to go. Both
    // optional and required dependencies (if run at all) must run before the
    // current migration.
    $dependency_graph = [];
    $required_dependency_graph = [];
    $have_optional = FALSE;
    foreach ($migrations as $migration) {
        
        /** @var \Drupal\migrate\Plugin\MigrationInterface $migration */
        $id = $migration->id();
        $requirements[$id] = [];
        $dependency_graph[$id]['edges'] = [];
        $migration_dependencies = $migration->getMigrationDependencies(TRUE);
        if (isset($migration_dependencies['required'])) {
            foreach ($migration_dependencies['required'] as $dependency) {
                if (!isset($dynamic_ids[$dependency])) {
                    $this->addDependency($required_dependency_graph, $id, $dependency, $dynamic_ids);
                }
                $this->addDependency($dependency_graph, $id, $dependency, $dynamic_ids);
            }
        }
        if (!empty($migration_dependencies['optional'])) {
            foreach ($migration_dependencies['optional'] as $dependency) {
                $this->addDependency($dependency_graph, $id, $dependency, $dynamic_ids);
            }
            $have_optional = TRUE;
        }
    }
    $dependency_graph = (new Graph($dependency_graph))->searchAndSort();
    if ($have_optional) {
        $required_dependency_graph = (new Graph($required_dependency_graph))->searchAndSort();
    }
    else {
        $required_dependency_graph = $dependency_graph;
    }
    $weights = [];
    foreach ($migrations as $migration_id => $migration) {
        // Populate a weights array to use with array_multisort() later.
        $weights[] = $dependency_graph[$migration_id]['weight'];
        if (!empty($required_dependency_graph[$migration_id]['paths'])) {
            $migration->set('requirements', $required_dependency_graph[$migration_id]['paths']);
        }
    }
    // Sort weights, labels, and keys in the same order as each other.
    array_multisort($weights, SORT_DESC, SORT_NUMERIC, array_keys($migrations), SORT_ASC, SORT_NATURAL, $migrations);
    return $migrations;
}