Dmitrii Stepanov
1b364d8cf4
Use histogram vector to measure request duration. Fix naming like in Prometheus best practice. Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
package metrics
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import (
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"time"
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"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
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"github.com/prometheus/client_golang/prometheus"
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)
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type (
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engineMetrics struct {
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methodDuration *prometheus.HistogramVec
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containerSize *prometheus.GaugeVec
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payloadSize *prometheus.GaugeVec
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errorCounter *prometheus.GaugeVec
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}
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)
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const (
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engineSubsystem = "engine"
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engineMethod = "method"
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)
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func newEngineMetrics() engineMetrics {
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return engineMetrics{
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containerSize: newEngineGaugeVector("container_size_bytes", "Accumulated size of all objects in a container", []string{containerIDLabelKey}),
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payloadSize: newEngineGaugeVector("payload_size_bytes", "Accumulated size of all objects in a shard", []string{shardIDLabelKey}),
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errorCounter: newEngineGaugeVector("error_counter", "Shard's error counter", []string{shardIDLabelKey}),
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methodDuration: metrics.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: engineSubsystem,
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Name: "request_duration_seconds",
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Help: "Duration of Engine requests",
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}, []string{engineMethod}),
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}
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}
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func newEngineGaugeVector(name, help string, labels []string) *prometheus.GaugeVec {
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return metrics.NewGaugeVec(prometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: engineSubsystem,
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Name: name,
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Help: help,
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}, labels)
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}
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func (m *engineMetrics) AddMethodDuration(method string, d time.Duration) {
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m.methodDuration.With(prometheus.Labels{
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engineMethod: method,
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}).Observe(d.Seconds())
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}
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func (m engineMetrics) AddToContainerSize(cnrID string, size int64) {
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m.containerSize.With(prometheus.Labels{containerIDLabelKey: cnrID}).Add(float64(size))
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}
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func (m engineMetrics) AddToPayloadCounter(shardID string, size int64) {
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m.payloadSize.With(prometheus.Labels{shardIDLabelKey: shardID}).Add(float64(size))
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}
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func (m engineMetrics) IncErrorCounter(shardID string) {
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m.errorCounter.With(prometheus.Labels{shardIDLabelKey: shardID}).Inc()
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}
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func (m engineMetrics) ClearErrorCounter(shardID string) {
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m.errorCounter.With(prometheus.Labels{shardIDLabelKey: shardID}).Set(0)
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}
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func (m engineMetrics) DeleteShardMetrics(shardID string) {
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m.errorCounter.Delete(prometheus.Labels{shardIDLabelKey: shardID})
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m.payloadSize.Delete(prometheus.Labels{shardIDLabelKey: shardID})
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}
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