public function D7FileDeriver::getDerivativeDefinitions in Media Migration 8
Gets the definition of all derivatives of a base plugin.
Parameters
array $base_plugin_definition: The definition array of the base plugin.
Return value
array An array of full derivative definitions keyed on derivative id.
Overrides D7FileConfigDeriver::getDerivativeDefinitions
See also
getDerivativeDefinition()
File
- src/
Plugin/ migrate/ D7FileDeriver.php, line 29
Class
- D7FileDeriver
- Deriver class for plain file to media entity migrations.
Namespace
Drupal\media_migration\Plugin\migrateCode
public function getDerivativeDefinitions($base_plugin_definition) {
$plain_file_types = static::getSourcePlugin('d7_file_plain_type');
try {
$plain_file_types
->checkRequirements();
} catch (RequirementsException $e) {
// The requirements of the "d7_file_plain_type" source plugin can fail if:
// - The source database is not configured
// - The File module is not enabled on the source Drupal instance
// - The source database is not a Drupal 7 database.
return $this->derivatives;
}
assert($plain_file_types instanceof DrupalSqlBase);
try {
foreach ($plain_file_types as $plain_file_type_row) {
assert($plain_file_type_row instanceof Row);
[
'mimes' => $mimes,
'schemes' => $schemes,
] = $plain_file_type_row
->getSource();
foreach (explode(ConfigSourceBase::MULTIPLE_SEPARATOR, $mimes) as $mime) {
foreach (explode(ConfigSourceBase::MULTIPLE_SEPARATOR, $schemes) as $scheme) {
// The "fallback" plugin has to be instantiated for any kind of
// combination.
if (!($dealer_plugin = $this->fileDealerManager
->createInstanceFromSchemeAndMime($scheme, $mime))) {
throw new \LogicException(sprintf('No FileDealer plugin applies for files with scheme "%s" and with mime type "%s/*"', $scheme, $mime));
}
$destination_media_type_id = $dealer_plugin
->getDestinationMediaTypeId();
$derivative_id = implode(PluginBase::DERIVATIVE_SEPARATOR, [
$mime,
$scheme,
]);
$derivative_definition = $base_plugin_definition;
// Create the migration derivative.
$derivative_definition['migration_tags'][] = MediaMigration::MIGRATION_TAG_MAIN;
$derivative_definition['migration_tags'][] = MediaMigration::MIGRATION_TAG_CONTENT;
$derivative_definition['source']['mime'] = $mime;
$derivative_definition['source']['scheme'] = $scheme;
$derivative_definition['source']['destination_media_type_id'] = $destination_media_type_id;
$derivative_definition['label'] = $this
->t('@label (@type)', [
'@label' => $base_plugin_definition['label'],
'@type' => $dealer_plugin
->getDestinationMediaTypeLabel(),
]);
// Post-process migration dependencies: instead of depending on
// migrations based on their base plugin ID, it is better to use the
// corresponding derivatives where possible.
$derived_migration_ids = [
'd7_file_plain_type',
'd7_file_plain_source_field',
'd7_file_plain_source_field_config',
'd7_file_plain_widget',
'd7_file_plain_formatter',
];
foreach ($derived_migration_ids as $derived_migration_base_id) {
$required_dependencies = !empty($derivative_definition['migration_dependencies']['required']) ? $derivative_definition['migration_dependencies']['required'] : [];
$dependency_key = array_search($derived_migration_base_id, $required_dependencies, TRUE);
if ($dependency_key !== FALSE) {
$derivative_definition['migration_dependencies']['required'][$dependency_key] .= PluginBase::DERIVATIVE_SEPARATOR . $destination_media_type_id;
}
}
// Add the corresponding file migration as migration dependency.
switch ($scheme) {
case 'public':
$derivative_definition['migration_dependencies']['required'][] = 'd7_file';
break;
case 'private':
$derivative_definition['migration_dependencies']['required'][] = 'd7_file_private';
break;
}
if ($derivative_definition['source']['plugin'] === 'd7_file_plain') {
$dealer_plugin
->alterMediaEntityMigrationDefinition($derivative_definition, $plain_file_types
->getDatabase());
}
$this->derivatives[$derivative_id] = $derivative_definition;
}
}
}
} catch (DatabaseExceptionWrapper $e) {
// Once we begin iterating the source plugin it is possible that the
// source tables will not exist. This can happen when the
// MigrationPluginManager gathers up the migration definitions but we do
// not actually have a Drupal 7 source database.
}
return $this->derivatives;
}