5d54584f03
Also bringing: . golang.org/x/net 5561cd9b4330353950f399814f427425c0a26fd2 . github.com/docker/distribution 83389a148052d74ac602f5f1d62f86ff2f3c4aa5 . github.com/docker/swarmkit bd69f6e8e301645afd344913fa1ede53a0a111fb . github.com/docker/go-metrics d466d4f6fd960e01820085bd7e1a24426ee7ef18 . github.com/prometheus/client_golang 52437c81da6b127a9925d17eb3a382a2e5fd395e . github.com/beorn7/perks 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9 . github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6 . github.com/prometheus/common ebdfc6da46522d58825777cf1f90490a5b1ef1d8 . github.com/prometheus/procfs abf152e5f3e97f2fafac028d2cc06c1feb87ffa5 . github.com/matttproud/golang_protobuf_extensions v1.0.0 Signed-off-by: Mathieu Champlon <mathieu.champlon@docker.com>
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package metrics
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import (
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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// StartTimer begins a timer observation at the callsite. When the target
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// operation is completed, the caller should call the return done func().
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func StartTimer(timer Timer) (done func()) {
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start := time.Now()
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return func() {
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timer.Update(time.Since(start))
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}
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}
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// Timer is a metric that allows collecting the duration of an action in seconds
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type Timer interface {
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// Update records an observation, duration, and converts to the target
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// units.
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Update(duration time.Duration)
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// UpdateSince will add the duration from the provided starting time to the
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// timer's summary with the precisions that was used in creation of the timer
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UpdateSince(time.Time)
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}
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// LabeledTimer is a timer that must have label values populated before use.
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type LabeledTimer interface {
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WithValues(labels ...string) Timer
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}
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type labeledTimer struct {
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m *prometheus.HistogramVec
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}
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func (lt *labeledTimer) WithValues(labels ...string) Timer {
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return &timer{m: lt.m.WithLabelValues(labels...)}
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}
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func (lt *labeledTimer) Describe(c chan<- *prometheus.Desc) {
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lt.m.Describe(c)
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}
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func (lt *labeledTimer) Collect(c chan<- prometheus.Metric) {
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lt.m.Collect(c)
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}
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type timer struct {
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m prometheus.Histogram
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}
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func (t *timer) Update(duration time.Duration) {
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t.m.Observe(duration.Seconds())
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}
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func (t *timer) UpdateSince(since time.Time) {
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t.m.Observe(time.Since(since).Seconds())
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}
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func (t *timer) Describe(c chan<- *prometheus.Desc) {
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t.m.Describe(c)
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}
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func (t *timer) Collect(c chan<- prometheus.Metric) {
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t.m.Collect(c)
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}
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