run method

@override Future<void> run()

Runs this command.

The return value is wrapped in a Future if necessary and returned by CommandRunner.runCommand.

Implementation

@override
Future<void> run() async {
  final args = argResults!;
  final rest = args.rest;
  if (rest.isEmpty) {
    throw CliError(
      'usage: preset apply <preset.json|preset-id> [<node>] '
      '[--label env=prod | --all]',
    );
  }

  // A path if it exists on disk, otherwise the id of a preset saved on the Hub.
  // The saved form is the one worth using: a file is whatever copy *this*
  // caller happens to have, while an id is the one everybody agrees on.
  final source = rest.first;
  final file = File(source);
  final body = <String, Object?>{
    if (file.existsSync())
      'preset': jsonDecode(file.readAsStringSync())
    else
      'presetId': source,
  };

  final client = _apiClientFrom(args);
  try {
    final nodes = await _selectNodes(
      client,
      args,
      positional: rest.skip(1).toList(),
    );
    final async = args['async'] as bool;
    await _fanOut(nodes, (node) async {
      final reply =
          await client.post('/presets/apply', {
                'nodeId': node,
                ...body,
                if (async) 'async': true,
              })
              as Map;
      if (async) return 'dispatched — ops show ${reply['id']}';
      final results = (reply['results'] as List).cast<Map>();
      final failed = results.where((r) => r['success'] != true).length;
      final changed = results.where((r) => r['changed'] == true).length;
      return failed == 0
          ? 'applied ${results.length} steps ($changed changed)'
          : 'FAILED $failed/${results.length} steps';
    });
  } finally {
    client.close();
  }
}