Listen for specific message in PUB/SUB topic [golang]

consumer.go

package consumer

import (
	"context"
	"log"

	"./gabatcher"
)

type event struct {
	Data []byte
}

// Receive func logs an event payload
func Receive(ctx context.Context, e event) error {

	switch string(e.Data) {
	// If message in topis is == " "
	case "start":
		log.Printf("= Batcher initieras från start =")
		gabatcher.Run()
		log.Printf("OPERATION 1/3 ✔️\n")

	default:
		log.Printf("== default ==")
	}

	return nil
}