fromJson static method

DeviceModelIngestionConfig? fromJson(dynamic value, [ AssetsProtocolEnum? protocol ])

Returns a new DeviceModelIngestionConfig instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static DeviceModelIngestionConfig? fromJson(dynamic value,
    [AssetsProtocolEnum? protocol]) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key),
            'Required key "DeviceModelIngestionConfig[$key]" is missing from JSON.');
        assert(json[key] != null,
            'Required key "DeviceModelIngestionConfig[$key]" has a null value in JSON.');
      });
      return true;
    }());

    List<AssetsMetric>? metrics;
    switch (protocol) {
      case AssetsProtocolEnum.S7:
        metrics = AssetsMetricS7.listFromJson(json[r'metric']);
        break;
      case AssetsProtocolEnum.MODBUSTCP:
        metrics = AssetsMetricModbusTCP.listFromJson(json[r'metric']);
        break;
      case AssetsProtocolEnum.MODBUSRTU:
        metrics = AssetsMetricModbusRTU.listFromJson(json[r'metric']);
        break;
      case AssetsProtocolEnum.OPCUA:
        metrics = AssetsMetricOPCUA.listFromJson(json[r'metric']);
        break;
    }

    return DeviceModelIngestionConfig(
      metrics: metrics,
    );
  }
  return null;
}