mirror of https://github.com/docker/cli.git
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
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package metrics
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import "github.com/prometheus/client_golang/prometheus"
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// Counter is a metrics that can only increment its current count
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type Counter interface {
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// Inc adds Sum(vs) to the counter. Sum(vs) must be positive.
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//
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// If len(vs) == 0, increments the counter by 1.
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Inc(vs ...float64)
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}
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// LabeledCounter is counter that must have labels populated before use.
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type LabeledCounter interface {
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WithValues(vs ...string) Counter
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}
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type labeledCounter struct {
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pc *prometheus.CounterVec
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}
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func (lc *labeledCounter) WithValues(vs ...string) Counter {
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return &counter{pc: lc.pc.WithLabelValues(vs...)}
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}
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func (lc *labeledCounter) Describe(ch chan<- *prometheus.Desc) {
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lc.pc.Describe(ch)
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}
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func (lc *labeledCounter) Collect(ch chan<- prometheus.Metric) {
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lc.pc.Collect(ch)
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}
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type counter struct {
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pc prometheus.Counter
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}
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func (c *counter) Inc(vs ...float64) {
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if len(vs) == 0 {
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c.pc.Inc()
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}
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c.pc.Add(sumFloat64(vs...))
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}
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func (c *counter) Describe(ch chan<- *prometheus.Desc) {
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c.pc.Describe(ch)
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}
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func (c *counter) Collect(ch chan<- prometheus.Metric) {
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c.pc.Collect(ch)
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}
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