mirror of
https://github.com/fluxcd/flagger.git
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105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
package metrics
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import (
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"fmt"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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flaggerv1 "github.com/weaveworks/flagger/pkg/apis/flagger/v1alpha3"
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)
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// Recorder records the canary analysis as Prometheus metrics
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type Recorder struct {
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info *prometheus.GaugeVec
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duration *prometheus.HistogramVec
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total *prometheus.GaugeVec
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status *prometheus.GaugeVec
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weight *prometheus.GaugeVec
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}
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// NewRecorder creates a new recorder and registers the Prometheus metrics
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func NewRecorder(controller string, register bool) Recorder {
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info := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Subsystem: controller,
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Name: "info",
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Help: "Flagger version and mesh provider information",
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}, []string{"version", "mesh_provider"})
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duration := prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Subsystem: controller,
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Name: "canary_duration_seconds",
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Help: "Seconds spent performing canary analysis.",
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Buckets: prometheus.DefBuckets,
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}, []string{"name", "namespace"})
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total := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Subsystem: controller,
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Name: "canary_total",
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Help: "Total number of canary object",
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}, []string{"namespace"})
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// 0 - running, 1 - successful, 2 - failed
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status := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Subsystem: controller,
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Name: "canary_status",
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Help: "Last canary analysis result",
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}, []string{"name", "namespace"})
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weight := prometheus.NewGaugeVec(prometheus.GaugeOpts{
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Subsystem: controller,
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Name: "canary_weight",
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Help: "The virtual service destination weight current value",
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}, []string{"workload", "namespace"})
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if register {
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prometheus.MustRegister(info)
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prometheus.MustRegister(duration)
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prometheus.MustRegister(total)
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prometheus.MustRegister(status)
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prometheus.MustRegister(weight)
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}
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return Recorder{
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info: info,
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duration: duration,
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total: total,
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status: status,
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weight: weight,
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}
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}
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// SetInfo sets the version and mesh provider labels
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func (cr *Recorder) SetInfo(version string, meshProvider string) {
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cr.info.WithLabelValues(version, meshProvider).Set(1)
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}
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// SetDuration sets the time spent in seconds performing canary analysis
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func (cr *Recorder) SetDuration(cd *flaggerv1.Canary, duration time.Duration) {
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cr.duration.WithLabelValues(cd.Spec.TargetRef.Name, cd.Namespace).Observe(duration.Seconds())
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}
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// SetTotal sets the total number of canaries per namespace
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func (cr *Recorder) SetTotal(namespace string, total int) {
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cr.total.WithLabelValues(namespace).Set(float64(total))
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}
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// SetStatus sets the last known canary analysis status
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func (cr *Recorder) SetStatus(cd *flaggerv1.Canary, phase flaggerv1.CanaryPhase) {
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status := 1
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switch phase {
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case flaggerv1.CanaryProgressing:
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status = 0
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case flaggerv1.CanaryFailed:
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status = 2
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default:
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status = 1
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}
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cr.status.WithLabelValues(cd.Spec.TargetRef.Name, cd.Namespace).Set(float64(status))
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}
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// SetWeight sets the weight values for primary and canary destinations
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func (cr *Recorder) SetWeight(cd *flaggerv1.Canary, primary int, canary int) {
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cr.weight.WithLabelValues(fmt.Sprintf("%s-primary", cd.Spec.TargetRef.Name), cd.Namespace).Set(float64(primary))
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cr.weight.WithLabelValues(cd.Spec.TargetRef.Name, cd.Namespace).Set(float64(canary))
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}
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