Nightingale

This package is meant to manage migrations for you. It does NOT generate the migrations, you have to write those yourself. As well as the reverse of the operation.

Setup

1. Add the dependency nightingale and optionally also depend on one of the default implementations:

• postgres_nightingale

2. Create a file at the location tool/nightingale.dart containing a main function that executes the runner with the commands, like so:

Future<void> main(List<String> arguments) async {	
  final runner = MigrationRunner<T>(
    database: /* <provide T> */,
	  contextGenerator: /* <provide context generator> */,
    migrations: /* <provide migrations> */,
	  history: /* <provide MigrationHistory<T> implementation> */,
  );
  await runner.execute(arguments);
}

3. Create implementations for database, history and context generator.
4. Decide on a structure to adhere to for the migrations (e.g.: $cwd/migrations/N) and pass those to the runner.

How to use

Running dart run nightingale will give you the available commands.

For now those are

• dart run nightingale status
• dart run nightingale migrate [--from 0 --until 5]
• dart run nightingale rollback [--until 0]