mirror of
https://github.com/docker/cli.git
synced 2026-08-28 10:05:17 -05:00
Sebastiaan van Stijn
3cd22ff935
- Add support for creating timers with custom histogram buckets. - Update `github.com/prometheus/client_golang` to v1.20.5. - Update the minimum supported Go version to Go 1.21. - Improve HTTP handler instrumentation, including minor performance improvements and cleanup. - Avoid mutating shared label maps when creating namespaces and metrics. - Encapsulate the Prometheus collector used by `HTTPMetric`. - Improve package and API documentation. - Update `golang.org/x/sys` and other dependencies. full diff: https://github.com/docker/go-metrics/compare/v0.0.1...v0.1.0 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
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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// Describe implements [prometheus.Collector].
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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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// Collect implements [prometheus.Collector].
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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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// Describe implements [prometheus.Collector].
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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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// Collect implements [prometheus.Collector].
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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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