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73 lines
2.4 KiB
73 lines
2.4 KiB
package indexer
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import (
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"github.com/go-kit/kit/metrics"
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"github.com/go-kit/kit/metrics/discard"
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prometheus "github.com/go-kit/kit/metrics/prometheus"
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stdprometheus "github.com/prometheus/client_golang/prometheus"
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)
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// MetricsSubsystem is a the subsystem label for the indexer package.
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const MetricsSubsystem = "indexer"
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// Metrics contains metrics exposed by this package.
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type Metrics struct {
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// Latency for indexing block events.
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BlockEventsSeconds metrics.Histogram
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// Latency for indexing transaction events.
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TxEventsSeconds metrics.Histogram
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// Number of complete blocks indexed.
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BlocksIndexed metrics.Counter
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// Number of transactions indexed.
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TransactionsIndexed metrics.Counter
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}
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// PrometheusMetrics returns Metrics build using Prometheus client library.
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// Optionally, labels can be provided along with their values ("foo",
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// "fooValue").
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func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
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labels := []string{}
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for i := 0; i < len(labelsAndValues); i += 2 {
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labels = append(labels, labelsAndValues[i])
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}
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return &Metrics{
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BlockEventsSeconds: prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "block_events_seconds",
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Help: "Latency for indexing block events.",
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}, labels).With(labelsAndValues...),
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TxEventsSeconds: prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "tx_events_seconds",
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Help: "Latency for indexing transaction events.",
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}, labels).With(labelsAndValues...),
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BlocksIndexed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "blocks_indexed",
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Help: "Number of complete blocks indexed.",
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}, labels).With(labelsAndValues...),
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TransactionsIndexed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "transactions_indexed",
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Help: "Number of transactions indexed.",
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}, labels).With(labelsAndValues...),
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}
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}
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// NopMetrics returns an indexer metrics stub that discards all samples.
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func NopMetrics() *Metrics {
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return &Metrics{
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BlockEventsSeconds: discard.NewHistogram(),
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TxEventsSeconds: discard.NewHistogram(),
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BlocksIndexed: discard.NewCounter(),
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TransactionsIndexed: discard.NewCounter(),
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}
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}
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