Remove rabbit conn from service object

lib/service/rabbitmq.go

@@ -19,12 +19,12 @@ func (svc *LndhubService) StartRabbitMqPublisher(ctx context.Context) error {
 	// It is recommended that, when possible, publishers and consumers
 	// use separate connections so that consumers are isolated from potential
 	// flow control messures that may be applied to publishing connections.
-	// We therefore start a single publishing connection here.
+	// We therefore start a single publishing connection here instead of storing
+	// one on the service object.
 	conn, err := amqp.Dial(svc.Config.RabbitMQUri)
 	if err != nil {
 		return err
 	}
-	svc.RabbitMqConn = conn
 
 	ch, err := conn.Channel()
 	if err != nil {

lib/service/service.go

@@ -12,8 +12,6 @@ import (
 	"github.com/uptrace/bun"
 	"github.com/ziflex/lecho/v3"
 	"golang.org/x/crypto/bcrypt"
-
-	amqp "github.com/rabbitmq/amqp091-go"
 )
 
 const alphaNumBytes = random.Alphanumeric
@@ -25,7 +23,6 @@ type LndhubService struct {
 	Logger         *lecho.Logger
 	IdentityPubkey string
 	InvoicePubSub  *Pubsub
-	RabbitMqConn   *amqp.Connection
 }
 
 func (svc *LndhubService) GenerateToken(ctx context.Context, login, password, inRefreshToken string) (accessToken, refreshToken string, err error) {