()
| 24 | } |
| 25 | |
| 26 | func newHeapScanner() (scanner, error) { |
| 27 | metricSamples := make([]metrics.Sample, 1) |
| 28 | metricSamples[0].Name = heapMetricName |
| 29 | metrics.Read(metricSamples) |
| 30 | |
| 31 | for _, sample := range metricSamples { |
| 32 | if sample.Value.Kind() == metrics.KindBad { |
| 33 | return nil, fmt.Errorf("metric %s is not supported", sample.Name) |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | return &heapScanner{metricSamples: metricSamples}, nil |
| 38 | } |
| 39 | |
| 40 | func (s *heapScanner) scan() (float64, error) { |
| 41 | metrics.Read(s.metricSamples) |