83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
package storage
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import (
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"sort"
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"github.com/prometheus/client_golang/prometheus"
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)
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// namespace is the leading part of all published metrics for the Storage service.
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const namespace = "storage"
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const retentionSubsystem = "retention" // sub-system associated with metrics for writing points.
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// retentionMetrics is a set of metrics concerned with tracking data about retention policies.
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type retentionMetrics struct {
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labels prometheus.Labels
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Checks *prometheus.CounterVec
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CheckDuration *prometheus.HistogramVec
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Unprocessable *prometheus.CounterVec
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Series *prometheus.CounterVec
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}
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func newRetentionMetrics(labels prometheus.Labels) *retentionMetrics {
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var names []string
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for k := range labels {
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names = append(names, k)
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}
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names = append(names, "status") // All metrics include status
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sort.Strings(names)
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return &retentionMetrics{
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labels: labels,
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Checks: prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: retentionSubsystem,
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Name: "checks_total",
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Help: "Number of retention check operations performed.",
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}, names),
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CheckDuration: prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: retentionSubsystem,
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Name: "check_duration_seconds",
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Help: "Time taken to perform a successful retention check.",
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// 25 buckets spaced exponentially between 10s and ~2h
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Buckets: prometheus.ExponentialBuckets(10, 1.32, 25),
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}, names),
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Unprocessable: prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: retentionSubsystem,
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Name: "unprocessable_buckets_total",
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Help: "Number of buckets that could not be operated on.",
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}, names),
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Series: prometheus.NewCounterVec(prometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: retentionSubsystem,
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Name: "series_total",
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Help: "Number of series that a delete was applied to.",
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}, names),
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}
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}
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// Labels returns a copy of labels for use with retention metrics.
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func (m *retentionMetrics) Labels() prometheus.Labels {
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l := make(map[string]string, len(m.labels))
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for k, v := range m.labels {
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l[k] = v
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}
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return l
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}
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// PrometheusCollectors satisfies the prom.PrometheusCollector interface.
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func (rm *retentionMetrics) PrometheusCollectors() []prometheus.Collector {
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return []prometheus.Collector{
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rm.Checks,
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rm.CheckDuration,
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rm.Unprocessable,
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rm.Series,
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}
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}
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