class MigrationTool extends AnyRef
Migration from another Akka Persistence plugin to the R2DBC plugin. Converts events and snapshots. It has been tested
with akka-persistence-jdbc as source plugin, but it should work with any plugin that has support for
CurrentPersistenceIdsQuery and CurrentEventsByPersistenceIdQuery.
It can be run as a main class akka.persistence.r2dbc.migration.MigrationTool with configuration in
application.conf or embedded in an application by creating an instance of MigrationTool and invoking
migrateAll.
It can be run while the source system is still active and it can be run multiple times with idempotent result. To
speed up processing of subsequent runs it stores migrated persistence ids and sequence numbers in the table
migration_progress. In a subsequent run it will only migrate new events and snapshots compared to what was stored
in migration_progress. It will also find and migrate new persistence ids in a subsequent run. You can delete from
migration_progress if you want to re-run the full migration.
Note: tags are not migrated.
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- new MigrationTool(system: ActorSystem[_])
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- def migrateAll(): Future[Result]
Migrates events and snapshots for all persistence ids.
- def migrateEvents(persistenceId: String): Future[Long]
Migrate events for a single persistence id.
- def migrateSnapshot(persistenceId: String): Future[Int]
Migrate latest snapshot for a single persistence id.
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