Metrics simplified in golang

metrics.go

// pkg/metrics/metrics.go
package metrics

import (
	"log"

	"github.com/DataDog/datadog-go/v5/statsd"
)

var s statsd.ClientInterface = &statsd.NoOpClient{}

func init() {
	client, err := statsd.New("127.0.0.1:8125")
	if err != nil {
		log.Printf("[ERROR] [STATSD] Failed to init statsd: %s\n", err)
		return
	}
	s = client
}

type Incrementable string

func (i Incrementable) Inc(tags ...string) {
	s.Incr(string(i), tags, 1)
}

var UserCreated = Incrementable("user.created")
var UserDeleted = Incrementable("user.deleted")

// Inside application code

metrics.UserCreated.Inc("type:business", "source:landing")
metrics.UserDeleted.Inc("type:business")