micro/metrics/metrics.go

// Package metrics is for instrumentation and debugging
package metrics

import "time"

// Tags is a map of fields to add to a metric:
type Tags map[string]string

// Reporter is an interface for collecting and instrumenting metrics
type Reporter interface {
	Count(id string, value int64, tags Tags) error
	Gauge(id string, value float64, tags Tags) error
	Timing(id string, value time.Duration, tags Tags) error
}