Schema Generation

aragog_cli provides the following basics:

Creating a Migration

Command: aragog create_migration MIGRATION_NAME

Creates a new migration file in SCHEMA_PATH/migrations/. If the db folder is missing it will be created automatically.

Launch migrations

Command: aragog migrate

Will launch every migration in SCHEMA_PATH/migrations/ and update the schema according to its current version. If there is no schema it will be generated.

Note: ArangoDB doesn't handle transactional operations for collection, index and graph management

Rollback migrations

Command: aragog rollback

Will rollback 1 migration in SCHEMA_PATH/migrations/ and update the schema according to its current version.

Command: aragog rollback COUNT

Will rollback COUNT migration in $CHEMA_PATH/migrations/ and update the schema according to its current version.

The schema is generated twice:

• once on the file system (schema.yaml)
• once in the database, the snapshot (synchronized version)

This allows seamless deployment, as the migrations launch will check the current snapshot

Using aragog with an exiting database

The aragog_cli provides a discover command creating a migration file for already initialized database and apply it to the schema.