// 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 var ( Defaultreporter Reporter ) // 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 }