WorldTouchpoint.fromJson constructor

WorldTouchpoint.fromJson(Map<String, dynamic> json)

Implementation

factory WorldTouchpoint.fromJson(Map<String, dynamic> json) {
  final name = json['name'] as String?;
  if (name == null || name.isEmpty) {
    throw const WorldManifestError(
      'touchpoint without a name --> fix: every touchpoints[] entry '
      'needs a non-empty "name".',
    );
  }
  final contract = json['contract'] as String? ?? '';
  final methods = (json['methods'] as List? ?? const [])
      .map(
        (m) => ContractMethod.fromJson(Map<String, dynamic>.from(m as Map)),
      )
      .toList(growable: false);
  if (methods.isEmpty) {
    throw WorldManifestError(
      'touchpoint "$name" declares no contract methods '
      '--> fix: parse the contract first or declare methods[] — a '
      'world touchpoint without methods has no contract to satisfy.',
    );
  }
  return WorldTouchpoint(
    name: name,
    type: json['type'] as String? ?? 'service',
    family: json['family'] as String? ?? 'generic',
    priority: json['priority'] as String? ?? 'P2',
    contract: contract,
    methods: methods,
  );
}