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108 lines
3.5 KiB
108 lines
3.5 KiB
package mempool
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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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"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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const (
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// MetricsSubsystem is a subsystem shared by all metrics exposed by this
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// package.
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MetricsSubsystem = "mempool"
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)
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// Metrics contains metrics exposed by this package.
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// see MetricsProvider for descriptions.
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type Metrics struct {
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// Size of the mempool.
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Size metrics.Gauge
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// Histogram of transaction sizes, in bytes.
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TxSizeBytes metrics.Histogram
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// Number of failed transactions.
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FailedTxs metrics.Counter
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// RejectedTxs defines the number of rejected transactions. These are
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// transactions that passed CheckTx but failed to make it into the mempool
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// due to resource limits, e.g. mempool is full and no lower priority
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// transactions exist in the mempool.
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RejectedTxs metrics.Counter
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// EvictedTxs defines the number of evicted transactions. These are valid
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// transactions that passed CheckTx and existed in the mempool but were later
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// evicted to make room for higher priority valid transactions that passed
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// CheckTx.
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EvictedTxs metrics.Counter
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// Number of times transactions are rechecked in the mempool.
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RecheckTimes 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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Size: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "size",
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Help: "Size of the mempool (number of uncommitted transactions).",
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}, labels).With(labelsAndValues...),
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TxSizeBytes: prometheus.NewHistogramFrom(stdprometheus.HistogramOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "tx_size_bytes",
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Help: "Transaction sizes in bytes.",
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Buckets: stdprometheus.ExponentialBuckets(1, 3, 17),
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}, labels).With(labelsAndValues...),
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FailedTxs: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "failed_txs",
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Help: "Number of failed transactions.",
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}, labels).With(labelsAndValues...),
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RejectedTxs: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "rejected_txs",
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Help: "Number of rejected transactions.",
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}, labels).With(labelsAndValues...),
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EvictedTxs: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "evicted_txs",
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Help: "Number of evicted transactions.",
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}, labels).With(labelsAndValues...),
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RecheckTimes: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "recheck_times",
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Help: "Number of times transactions are rechecked in the mempool.",
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}, labels).With(labelsAndValues...),
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}
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}
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// NopMetrics returns no-op Metrics.
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func NopMetrics() *Metrics {
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return &Metrics{
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Size: discard.NewGauge(),
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TxSizeBytes: discard.NewHistogram(),
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FailedTxs: discard.NewCounter(),
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RejectedTxs: discard.NewCounter(),
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EvictedTxs: discard.NewCounter(),
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RecheckTimes: discard.NewCounter(),
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}
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}
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