| Class | Description |
|---|---|
| BaggageMetricLabel |
This implementation attempts to obtain the metric label value from the span's
baggage.
|
| ConstMetricLabel |
This implementation returns a constant value for the metric label.
|
| OperationMetricLabel |
This implementation obtains the metric label value from the span's
operation.
|
| TagMetricLabel |
This implementation attempts to obtain the metric label value from the span's
tags.
|
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