Добавлено поле DBVersion в collection.go и константа DBVersion в content.go

pkg/collections/collection.go

@@ -90,6 +90,7 @@ type StateInfo struct {
 	State     State     `json:"state" bson:"state"`
 	Info      string    `json:"info" bson:"info"`
 	StartedAt time.Time `json:"started_at,omitempty" bson:"started_at,omitempty"`
+	DBVersion uint32    `json:"db_version" bson:"db_version"`
 }
 
 type State int

pkg/content/content.go

@@ -20,6 +20,10 @@ type Runnable interface {
 	Stop()
 }
 
+const (
+	DBVersion uint32 = 1
+)
+
 type Content struct {
 	collaborators.Collaborators
 	collections.Collections