986f076276
Add a new generic container registry client via a new `container` package. Use this to create a command line utility as well as a new upload target for container registries. The code uses the github.com/containers/* project and packages to interact with container registires that is also used by skopeo, podman et al. One if the dependencies is `proglottis/gpgme` that is using cgo to bind libgpgme, so we have to add the corresponding devel package to the BuildRequires as well as installing it on CI. Checks will follow later via an integration test.
85 lines
2.2 KiB
Go
85 lines
2.2 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) *labeledTimerObserver
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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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type labeledTimerObserver struct {
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m prometheus.Observer
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}
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func (lbo *labeledTimerObserver) Update(duration time.Duration) {
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lbo.m.Observe(duration.Seconds())
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}
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func (lbo *labeledTimerObserver) UpdateSince(since time.Time) {
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lbo.m.Observe(time.Since(since).Seconds())
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}
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func (lt *labeledTimer) WithValues(labels ...string) *labeledTimerObserver {
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return &labeledTimerObserver{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.Observer
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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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c <- t.m.(prometheus.Metric).Desc()
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}
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func (t *timer) Collect(c chan<- prometheus.Metric) {
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// Are there any observers that don't implement Collector? It is really
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// unclear what the point of the upstream change was, but we'll let this
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// panic if we get an observer that doesn't implement collector. In this
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// case, we should almost always see metricVec objects, so this should
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// never panic.
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t.m.(prometheus.Collector).Collect(c)
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}
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