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package consensus
import (
"github.com/go-kit/kit/metrics"
"github.com/go-kit/kit/metrics/discard"
prometheus "github.com/go-kit/kit/metrics/prometheus"
stdprometheus "github.com/prometheus/client_golang/prometheus"
)
const (
// MetricsSubsystem is a subsystem shared by all metrics exposed by this
// package.
MetricsSubsystem = "consensus"
)
// Metrics contains metrics exposed by this package.
type Metrics struct {
// Height of the chain.
Height metrics.Gauge
// Number of rounds.
Rounds metrics.Gauge
// Number of validators.
Validators metrics.Gauge
// Total power of all validators.
ValidatorsPower metrics.Gauge
// Number of validators who did not sign.
MissingValidators metrics.Gauge
// Total power of the missing validators.
MissingValidatorsPower metrics.Gauge
// Number of validators who tried to double sign.
ByzantineValidators metrics.Gauge
// Total power of the byzantine validators.
ByzantineValidatorsPower metrics.Gauge
// Time between this and the last block.
BlockIntervalSeconds metrics.Gauge
// Number of transactions.
NumTxs metrics.Gauge
// Size of the block.
BlockSizeBytes metrics.Gauge
// Total number of transactions.
TotalTxs metrics.Gauge
// The latest block height.
CommittedHeight metrics.Gauge
// Whether or not a node is fast syncing. 1 if yes, 0 if no.
FastSyncing metrics.Gauge
// Number of blockparts transmitted by peer.
BlockParts metrics.Counter
}
// PrometheusMetrics returns Metrics build using Prometheus client library.
// Optionally, labels can be provided along with their values ("foo",
// "fooValue").
func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
labels := []string{}
for i := 0; i < len(labelsAndValues); i += 2 {
labels = append(labels, labelsAndValues[i])
}
return &Metrics{
Height: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "height",
Help: "Height of the chain.",
}, labels).With(labelsAndValues...),
Rounds: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "rounds",
Help: "Number of rounds.",
}, labels).With(labelsAndValues...),
Validators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "validators",
Help: "Number of validators.",
}, labels).With(labelsAndValues...),
ValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "validators_power",
Help: "Total power of all validators.",
}, labels).With(labelsAndValues...),
MissingValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "missing_validators",
Help: "Number of validators who did not sign.",
}, labels).With(labelsAndValues...),
MissingValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "missing_validators_power",
Help: "Total power of the missing validators.",
}, labels).With(labelsAndValues...),
ByzantineValidators: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "byzantine_validators",
Help: "Number of validators who tried to double sign.",
}, labels).With(labelsAndValues...),
ByzantineValidatorsPower: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "byzantine_validators_power",
Help: "Total power of the byzantine validators.",
}, labels).With(labelsAndValues...),
BlockIntervalSeconds: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "block_interval_seconds",
Help: "Time between this and the last block.",
}, labels).With(labelsAndValues...),
NumTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "num_txs",
Help: "Number of transactions.",
}, labels).With(labelsAndValues...),
BlockSizeBytes: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "block_size_bytes",
Help: "Size of the block.",
}, labels).With(labelsAndValues...),
TotalTxs: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "total_txs",
Help: "Total number of transactions.",
}, labels).With(labelsAndValues...),
CommittedHeight: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "latest_block_height",
Help: "The latest block height.",
}, labels).With(labelsAndValues...),
FastSyncing: prometheus.NewGaugeFrom(stdprometheus.GaugeOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "fast_syncing",
Help: "Whether or not a node is fast syncing. 1 if yes, 0 if no.",
}, labels).With(labelsAndValues...),
BlockParts: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "block_parts",
Help: "Number of blockparts transmitted by peer.",
}, append(labels, "peer_id")).With(labelsAndValues...),
}
}
// NopMetrics returns no-op Metrics.
func NopMetrics() *Metrics {
return &Metrics{
Height: discard.NewGauge(),
Rounds: discard.NewGauge(),
Validators: discard.NewGauge(),
ValidatorsPower: discard.NewGauge(),
MissingValidators: discard.NewGauge(),
MissingValidatorsPower: discard.NewGauge(),
ByzantineValidators: discard.NewGauge(),
ByzantineValidatorsPower: discard.NewGauge(),
BlockIntervalSeconds: discard.NewGauge(),
NumTxs: discard.NewGauge(),
BlockSizeBytes: discard.NewGauge(),
TotalTxs: discard.NewGauge(),
CommittedHeight: discard.NewGauge(),
FastSyncing: discard.NewGauge(),
BlockParts: discard.NewCounter(),
}
}