Rename Topic to TopicPattern in Grant

auth/auth.go

@@ -63,9 +63,9 @@ type User struct {
 
 // Grant is a struct that represents an access control entry to a topic
 type Grant struct {
-	Topic string
-	Read  bool
-	Write bool
+	TopicPattern string // May include wildcard (*)
+	Read         bool
+	Write        bool
 }
 
 // Permission represents a read or write permission to a topic

auth/auth_sqlite.go

@@ -280,9 +280,9 @@ func (a *SQLiteAuth) readGrants(username string) ([]Grant, error) {
 			return nil, err
 		}
 		grants = append(grants, Grant{
-			Topic: fromSQLWildcard(topic),
-			Read:  read,
-			Write: write,
+			TopicPattern: fromSQLWildcard(topic),
+			Read:         read,
+			Write:        write,
 		})
 	}
 	return grants, nil