migrate_plus 8.x-2.0-beta2

The migrate_plus module extends the core migration system with API enhancements
and additional functionality, as well as providing practical examples.

Extensions to base API

• A Migration configuration entity is provided, enabling persistence of dynamic
  migration configuration.
• A ConfigEntityDiscovery class is implemented which enables plugin configuration
  to be based on configuration entities. This is fully general - it can be used
  for any configuration entity type, not just migrations.
• A MigrationConfigEntityPluginManager class and corresponding
  plugin.manager.config_entity_migration service is provided, to enable discovery
  and instantiation of migration plugins based on the Migration configuration
  entity.
• A MigrationGroup configuration entity is provided, which enables migrations to
  be organized in groups, and to maintain shared configuration in one place.
• A MigrateEvents::PREPARE_ROW event is provided to dispatch hook_prepare_row()
  invocations as events.
• A SourcePluginExtension class is provided, enabling one to define fields and
  IDs for a source plugin via configuration rather than requiring PHP code.

Plugins

• A Url source plugin is provided, implementing a common structure for
  file-based data providers.
• An HTTP fetcher for the Url source plugin is provided.
• XML, JSON, and SOAP parsers for the Url source plugin are provided.
• entity_lookup and entity_generate process plugins are provided, for matching source data to existing entities, and lazily creating related entities dynamically.

Examples