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package consensus
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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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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 = "consensus"
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)
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// Metrics contains metrics exposed by this package.
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type Metrics struct {
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// Height of the chain.
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Height metrics.Gauge
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// Number of rounds.
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Rounds metrics.Gauge
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// Number of validators.
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Validators metrics.Gauge
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// Total power of all validators.
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ValidatorsPower metrics.Gauge
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// Number of validators who did not sign.
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MissingValidators metrics.Gauge
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// Total power of the missing validators.
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MissingValidatorsPower metrics.Gauge
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// Number of validators who tried to double sign.
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ByzantineValidators metrics.Gauge
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// Total power of the byzantine validators.
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ByzantineValidatorsPower metrics.Gauge
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// Time between this and the last block.
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BlockIntervalSeconds metrics.Gauge
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// Number of transactions.
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NumTxs metrics.Gauge
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// Size of the block.
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BlockSizeBytes metrics.Gauge
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// Total number of transactions.
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TotalTxs metrics.Gauge
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// The latest block height.
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CommittedHeight metrics.Gauge
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// Whether or not a node is fast syncing. 1 if yes, 0 if no.
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FastSyncing metrics.Gauge
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// Number of blockparts transmitted by peer.
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BlockParts 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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Height: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "height",
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Help: "Height of the chain.",
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}, labels).With(labelsAndValues...),
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Rounds: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "rounds",
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Help: "Number of rounds.",
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}, labels).With(labelsAndValues...),
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Validators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "validators",
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Help: "Number of validators.",
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}, labels).With(labelsAndValues...),
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ValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "validators_power",
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Help: "Total power of all validators.",
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}, labels).With(labelsAndValues...),
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MissingValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "missing_validators",
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Help: "Number of validators who did not sign.",
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}, labels).With(labelsAndValues...),
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MissingValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "missing_validators_power",
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Help: "Total power of the missing validators.",
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}, labels).With(labelsAndValues...),
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ByzantineValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "byzantine_validators",
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Help: "Number of validators who tried to double sign.",
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}, labels).With(labelsAndValues...),
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ByzantineValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "byzantine_validators_power",
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Help: "Total power of the byzantine validators.",
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}, labels).With(labelsAndValues...),
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BlockIntervalSeconds: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "block_interval_seconds",
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Help: "Time between this and the last block.",
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}, labels).With(labelsAndValues...),
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NumTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "num_txs",
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Help: "Number of transactions.",
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}, labels).With(labelsAndValues...),
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BlockSizeBytes: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "block_size_bytes",
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Help: "Size of the block.",
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}, labels).With(labelsAndValues...),
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TotalTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "total_txs",
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Help: "Total number of transactions.",
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}, labels).With(labelsAndValues...),
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CommittedHeight: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "latest_block_height",
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Help: "The latest block height.",
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}, labels).With(labelsAndValues...),
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FastSyncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "fast_syncing",
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Help: "Whether or not a node is fast syncing. 1 if yes, 0 if no.",
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}, labels).With(labelsAndValues...),
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BlockParts: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
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Namespace: namespace,
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Subsystem: MetricsSubsystem,
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Name: "block_parts",
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Help: "Number of blockparts transmitted by peer.",
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}, append(labels, "peer_id")).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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Height: discard.NewGauge(),
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Rounds: discard.NewGauge(),
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Validators: discard.NewGauge(),
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ValidatorsPower: discard.NewGauge(),
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MissingValidators: discard.NewGauge(),
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MissingValidatorsPower: discard.NewGauge(),
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ByzantineValidators: discard.NewGauge(),
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ByzantineValidatorsPower: discard.NewGauge(),
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BlockIntervalSeconds: discard.NewGauge(),
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NumTxs: discard.NewGauge(),
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BlockSizeBytes: discard.NewGauge(),
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TotalTxs: discard.NewGauge(),
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CommittedHeight: discard.NewGauge(),
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FastSyncing: discard.NewGauge(),
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BlockParts: discard.NewCounter(),
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}
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}
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