Resolve "To improve the device watching mechanism a fetch all after time interval method should be implemented"

Description

Implemented something different, than in #259 because the plan how we want to improve this changed. This should be also working with the planned upcoming changes to getting paths, adding mne, etc.

controller/event/event.go

@@ -4,9 +4,10 @@ import "github.com/google/uuid"
 
 // Event is a event that can be published via the event service as payload.
 type Event struct {
-	ID       uuid.UUID `json:"id,omitempty"`
-	EntityID uuid.UUID `json:"entity_id,omitempty"`
-	Type     string    `json:"type,omitempty"`
+	ID                uuid.UUID         `json:"id,omitempty"`
+	EntityID          uuid.UUID         `json:"entity_id,omitempty"`
+	Type              string            `json:"type,omitempty"`
+	PathsAndValuesMap map[string]string `json:"paths_and_values,omitempty"`
 }
 
 const (
@@ -46,3 +47,13 @@ func NewUpdateEvent(entityID uuid.UUID) Event {
 		Type:     TypeUpdate,
 	}
 }
+
+// NewMneUpdateEvent creates a new update event for managed network elements.
+func NewMneUpdateEvent(entityID uuid.UUID, pathsAndValues map[string]string) Event {
+	return Event{
+		ID:                uuid.New(),
+		EntityID:          entityID,
+		Type:              TypeUpdate,
+		PathsAndValuesMap: pathsAndValues,
+	}
+}