Files
rkt/store/migrate.go
Jonathan Boulle 9685f37575 *: adjust copyright header
Inspired by a similar change in the Kubernetes project [1], this changes
the copyright header to the more generic "The rkt Authors" rather than
"CoreOS, Inc.", which is only sometimes correct.

https://github.com/GoogleCloudPlatform/kubernetes/commit/6b3a6e6b983f967c88d14d26542ec6e30c49ebd3
2015-05-03 14:29:15 -07:00

60 lines
1.4 KiB
Go

// Copyright 2015 The rkt Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package store
import (
"database/sql"
"fmt"
)
type migrateFunc func(*sql.Tx) error
var (
// migrateTable is a map of migrate functions. The key is the db
// version to migrate to.
migrateTable = map[int]migrateFunc{
1: migrateToV1,
}
)
func migrate(tx *sql.Tx, finalVersion int) error {
if finalVersion > dbVersion {
return fmt.Errorf("required migrate final version greater than the last supported db version")
}
version, err := getDBVersion(tx)
if err != nil {
return err
}
for v := version + 1; v <= finalVersion; v++ {
f, ok := migrateTable[v]
if !ok {
return fmt.Errorf("missing migrate function for version %d", v)
}
err := f(tx)
if err == nil {
updateDBVersion(tx, v)
}
if err != nil {
return fmt.Errorf("failed to migrate db to version %d: %v", v, err)
}
}
return nil
}
func migrateToV1(tx *sql.Tx) error {
return nil
}