80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
// Package multi provides adapters that send observations to multiple metrics
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// simultaneously. This is useful if your service needs to emit to multiple
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// instrumentation systems at the same time, for example if your organization is
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// transitioning from one system to another.
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package multi
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import "github.com/go-kit/kit/metrics"
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// Counter collects multiple individual counters and treats them as a unit.
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type Counter []metrics.Counter
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// NewCounter returns a multi-counter, wrapping the passed counters.
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func NewCounter(c ...metrics.Counter) Counter {
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return Counter(c)
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}
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// Add implements counter.
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func (c Counter) Add(delta float64) {
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for _, counter := range c {
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counter.Add(delta)
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}
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}
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// With implements counter.
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func (c Counter) With(labelValues ...string) metrics.Counter {
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next := make(Counter, len(c))
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for i := range c {
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next[i] = c[i].With(labelValues...)
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}
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return next
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}
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// Gauge collects multiple individual gauges and treats them as a unit.
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type Gauge []metrics.Gauge
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// NewGauge returns a multi-gauge, wrapping the passed gauges.
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func NewGauge(g ...metrics.Gauge) Gauge {
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return Gauge(g)
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}
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// Set implements Gauge.
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func (g Gauge) Set(value float64) {
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for _, gauge := range g {
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gauge.Set(value)
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}
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}
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// With implements gauge.
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func (g Gauge) With(labelValues ...string) metrics.Gauge {
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next := make(Gauge, len(g))
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for i := range g {
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next[i] = g[i].With(labelValues...)
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}
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return next
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}
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// Histogram collects multiple individual histograms and treats them as a unit.
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type Histogram []metrics.Histogram
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// NewHistogram returns a multi-histogram, wrapping the passed histograms.
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func NewHistogram(h ...metrics.Histogram) Histogram {
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return Histogram(h)
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}
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// Observe implements Histogram.
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func (h Histogram) Observe(value float64) {
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for _, histogram := range h {
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histogram.Observe(value)
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}
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}
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// With implements histogram.
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func (h Histogram) With(labelValues ...string) metrics.Histogram {
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next := make(Histogram, len(h))
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for i := range h {
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next[i] = h[i].With(labelValues...)
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}
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return next
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}
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