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31 lines
898 B
31 lines
898 B
6 years ago
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package metric
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// Opts contains the common arguments for creating Metric.
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type Opts struct {
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}
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// Metric is a sample interface.
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// Implementations of Metrics in metric package are Counter, Gauge,
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// PointGauge, RollingCounter and RollingGauge.
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type Metric interface {
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// Add adds the given value to the counter.
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Add(int64)
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// Value gets the current value.
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// If the metric's type is PointGauge, RollingCounter, RollingGauge,
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// it returns the sum value within the window.
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Value() int64
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}
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// Aggregation contains some common aggregation function.
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// Each aggregation can compute summary statistics of window.
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type Aggregation interface {
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// Min finds the min value within the window.
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Min() float64
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// Max finds the max value within the window.
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Max() float64
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// Avg computes average value within the window.
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Avg() float64
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// Sum computes sum value within the window.
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Sum() float64
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}
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