86 lines
2.5 KiB
Go
86 lines
2.5 KiB
Go
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// Package circonus provides a Circonus backend for metrics.
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package circonus
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import (
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"github.com/circonus-labs/circonus-gometrics"
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"github.com/go-kit/kit/metrics"
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)
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// Circonus wraps a CirconusMetrics object and provides constructors for each of
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// the Go kit metrics. The CirconusMetrics object manages aggregation of
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// observations and emission to the Circonus server.
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type Circonus struct {
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m *circonusgometrics.CirconusMetrics
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}
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// New creates a new Circonus object wrapping the passed CirconusMetrics, which
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// the caller should create and set in motion. The Circonus object can be used
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// to construct individual Go kit metrics.
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func New(m *circonusgometrics.CirconusMetrics) *Circonus {
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return &Circonus{
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m: m,
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}
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}
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// NewCounter returns a counter metric with the given name.
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func (c *Circonus) NewCounter(name string) *Counter {
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return &Counter{
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name: name,
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m: c.m,
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}
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}
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// NewGauge returns a gauge metric with the given name.
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func (c *Circonus) NewGauge(name string) *Gauge {
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return &Gauge{
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name: name,
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m: c.m,
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}
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}
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// NewHistogram returns a histogram metric with the given name.
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func (c *Circonus) NewHistogram(name string) *Histogram {
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return &Histogram{
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h: c.m.NewHistogram(name),
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}
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}
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// Counter is a Circonus implementation of a counter metric.
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type Counter struct {
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name string
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m *circonusgometrics.CirconusMetrics
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}
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// With implements Counter, but is a no-op, because Circonus metrics have no
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// concept of per-observation label values.
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func (c *Counter) With(labelValues ...string) metrics.Counter { return c }
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// Add implements Counter. Delta is converted to uint64; precision will be lost.
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func (c *Counter) Add(delta float64) { c.m.Add(c.name, uint64(delta)) }
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// Gauge is a Circonus implementation of a gauge metric.
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type Gauge struct {
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name string
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m *circonusgometrics.CirconusMetrics
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}
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// With implements Gauge, but is a no-op, because Circonus metrics have no
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// concept of per-observation label values.
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func (g *Gauge) With(labelValues ...string) metrics.Gauge { return g }
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// Set implements Gauge.
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func (g *Gauge) Set(value float64) { g.m.SetGauge(g.name, value) }
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// Histogram is a Circonus implementation of a histogram metric.
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type Histogram struct {
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h *circonusgometrics.Histogram
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}
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// With implements Histogram, but is a no-op, because Circonus metrics have no
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// concept of per-observation label values.
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func (h *Histogram) With(labelValues ...string) metrics.Histogram { return h }
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// Observe implements Histogram. No precision is lost.
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func (h *Histogram) Observe(value float64) { h.h.RecordValue(value) }
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