...
	cfg := common_io.Config{}
	err := config.Load("common_io_config.gcfg", &cfg)
	if err != nil {
		log.Fatal(err)
	}

	// Producer
	producer, err = common_io.NewProducer(cfg)
	if err != nil {
		log.Fatal(err)
	}

	defer producer.TearDown()

	// Consumer
	consumer = common_io.NewConsumer(cfg)
	consumer.HandleTopic("send_mail", mailer.SendMail)
	if err = consumer.StartListening(); err != nil {
		log.Fatal(err)
	}

	defer consumer.TearDown()
	...

	...
		m := mailer.Mail{
			To:      []string{"asvins.poli@gmail.com"},
			Subject: "Test from Asvins server",
			Body:    "Test Message from Asvins Servers.\n -- Asvins Team",
		}

		b, err := json.Marshal(&m)
		if err != nil {
			return errors.BadRequest(err.Error())
		}

		producer.Publish("send_mail", b)
	...