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package v2
import (
"github.com/go-kit/kit/metrics"
"github.com/go-kit/kit/metrics/discard"
"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 = "blockchain"
)
// Metrics contains metrics exposed by this package.
type Metrics struct {
// events_in
EventsIn metrics.Counter
// events_in
EventsHandled metrics.Counter
// events_out
EventsOut metrics.Counter
// errors_in
ErrorsIn metrics.Counter
// errors_handled
ErrorsHandled metrics.Counter
// errors_out
ErrorsOut metrics.Counter
// events_shed
EventsShed metrics.Counter
// events_sent
EventsSent metrics.Counter
// errors_sent
ErrorsSent metrics.Counter
// errors_shed
ErrorsShed metrics.Counter
}
// Can we burn in the routine name here?
func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics {
labels := []string{}
for i := 0; i < len(labelsAndValues); i += 2 {
labels = append(labels, labelsAndValues[i])
}
return &Metrics{
EventsIn: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "events_in",
Help: "Events read from the channel.",
}, labels).With(labelsAndValues...),
EventsHandled: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "events_handled",
Help: "Events handled",
}, labels).With(labelsAndValues...),
EventsOut: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "events_out",
Help: "Events output from routine.",
}, labels).With(labelsAndValues...),
ErrorsIn: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "errors_in",
Help: "Errors read from the channel.",
}, labels).With(labelsAndValues...),
ErrorsHandled: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "errors_handled",
Help: "Errors handled.",
}, labels).With(labelsAndValues...),
ErrorsOut: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "errors_out",
Help: "Errors output from routine.",
}, labels).With(labelsAndValues...),
ErrorsSent: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "errors_sent",
Help: "Errors sent to routine.",
}, labels).With(labelsAndValues...),
ErrorsShed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "errors_shed",
Help: "Errors dropped from sending.",
}, labels).With(labelsAndValues...),
EventsSent: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "events_sent",
Help: "Events sent to routine.",
}, labels).With(labelsAndValues...),
EventsShed: prometheus.NewCounterFrom(stdprometheus.CounterOpts{
Namespace: namespace,
Subsystem: MetricsSubsystem,
Name: "events_shed",
Help: "Events dropped from sending.",
}, labels).With(labelsAndValues...),
}
}
// NopMetrics returns no-op Metrics.
func NopMetrics() *Metrics {
return &Metrics{
EventsIn: discard.NewCounter(),
EventsHandled: discard.NewCounter(),
EventsOut: discard.NewCounter(),
ErrorsIn: discard.NewCounter(),
ErrorsHandled: discard.NewCounter(),
ErrorsOut: discard.NewCounter(),
EventsShed: discard.NewCounter(),
EventsSent: discard.NewCounter(),
ErrorsSent: discard.NewCounter(),
ErrorsShed: discard.NewCounter(),
}
}