Line data    Source code

       1              : // Licensed under the Apache License, Version 2.0
       2              : // Copyright 2025, Michael Bushe, All rights reserved.
       3              : 
       4              : import '../../resource/resource.dart';
       5              : import 'metric.dart';
       6              : 
       7              : /// MetricData represents a collection of metrics to be exported.
       8              : class MetricData {
       9              :   /// The resource associated with the metrics.
      10              :   final Resource? resource;
      11              : 
      12              :   /// The collection of metrics.
      13              :   final List<Metric> metrics;
      14              : 
      15              :   /// Creates a new MetricData instance.
      16           68 :   MetricData({
      17              :     this.resource,
      18              :     required this.metrics,
      19              :   });
      20              : 
      21              :   /// Creates an empty MetricData instance.
      22            1 :   factory MetricData.empty() {
      23            2 :     return MetricData(metrics: []);
      24              :   }
      25              : 
      26              :   /// Returns a new MetricData instance with the metrics filtered by the given predicate.
      27            0 :   MetricData filter(bool Function(Metric metric) predicate) {
      28            0 :     return MetricData(
      29            0 :       resource: resource,
      30            0 :       metrics: metrics.where(predicate).toList(),
      31              :     );
      32              :   }
      33              : 
      34              :   /// Returns a new MetricData instance with the given metrics added.
      35            0 :   MetricData merge(MetricData other) {
      36            0 :     return MetricData(
      37            0 :       resource: resource ?? other.resource,
      38            0 :       metrics: [...metrics, ...other.metrics],
      39              :     );
      40              :   }
      41              : }