fix cyclic dependecies

Author: bilaljaved

metrics.go

@@ -1,15 +1,11 @@
 package goengine
 
-import (
-	"github.com/hellofresh/goengine/driver/sql"
-)
-
 type (
 	// Metrics a structured metrics interface
 	Metrics interface {
 		ReceivedNotification(isNotification bool)
-		QueueNotification(notification *sql.ProjectionNotification)
-		StartNotificationProcessing(notification *sql.ProjectionNotification)
-		FinishNotificationProcessing(notification *sql.ProjectionNotification, success bool, retry bool)
+		QueueNotification(notification interface{})
+		StartNotificationProcessing(notification interface{})
+		FinishNotificationProcessing(notification interface{}, success bool, retry bool)
 	}
 )

metrics_nop.go

@@ -1,13 +1,11 @@
 package goengine
 
-import "github.com/hellofresh/goengine/driver/sql"
-
 var NopMetrics Metrics = &nopMetrics{}
 
 type nopMetrics struct{}
 
 func (nm *nopMetrics) ReceivedNotification(isNotification bool)                             {}
-func (nm *nopMetrics) QueueNotification(notification *sql.ProjectionNotification)           {}
-func (nm *nopMetrics) StartNotificationProcessing(notification *sql.ProjectionNotification) {}
-func (nm *nopMetrics) FinishNotificationProcessing(notification *sql.ProjectionNotification, success bool, retry bool) {
+func (nm *nopMetrics) QueueNotification(notification interface{})           {}
+func (nm *nopMetrics) StartNotificationProcessing(notification interface{}) {}
+func (nm *nopMetrics) FinishNotificationProcessing(notification interface{}, success bool, retry bool) {
 }