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metrics.go
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/
metrics.go
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package servicegetter
import (
"github.com/prometheus/client_golang/prometheus"
"github.com/fluxninja/aperture/v2/pkg/metrics"
)
// Metrics is used for collecting metrics about servicegetter
//
// nil value of Metrics should be always usable.
type Metrics struct {
okTotal prometheus.Counter
errorsTotal prometheus.Counter
}
// NewMetrics creates new Metrics, registering counters in given registry.
func NewMetrics(registry *prometheus.Registry) (*Metrics, error) {
total := prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: metrics.ServiceLookupsMetricName,
Help: "Number of IP to services lookups",
},
[]string{metrics.ServiceLookupsStatusLabel},
)
if err := registry.Register(total); err != nil {
return nil, err
}
return &Metrics{
okTotal: total.WithLabelValues(metrics.ServiceLookupsStatusOK),
errorsTotal: total.WithLabelValues(metrics.ServiceLookupsStatusError),
}, nil
}
func (m *Metrics) inc(ok bool) {
if m == nil {
return
}
if ok {
m.okTotal.Inc()
} else {
m.errorsTotal.Inc()
}
}