83 lines
2.1 KiB
Go
83 lines
2.1 KiB
Go
// This file is part of the happyDomain (R) project.
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// Copyright (c) 2020-2024 happyDomain
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// Authors: Pierre-Olivier Mercier, et al.
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//
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// This program is offered under a commercial and under the AGPL license.
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// For commercial licensing, contact us at <contact@happydomain.org>.
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//
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// For AGPL licensing:
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package database
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import (
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"fmt"
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"log"
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)
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type LevelDBMigrationFunc func(s *LevelDBStorage) error
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var migrations []LevelDBMigrationFunc = []LevelDBMigrationFunc{
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migrateFrom0,
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migrateFrom1,
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migrateFrom2,
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migrateFrom3,
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migrateFrom4,
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migrateFrom5,
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}
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func (s *LevelDBStorage) DoMigration() (err error) {
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found := false
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found, err = s.db.Has([]byte("version"), nil)
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if err != nil {
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return
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}
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var version int
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if !found {
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version = len(migrations)
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err = s.put("version", version)
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if err != nil {
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return
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}
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}
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err = s.get("version", &version)
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if err != nil {
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return
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}
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if version > len(migrations) {
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return fmt.Errorf("Your database has revision %d, which is newer than the revision this happyDomain version can handle (max DB revision %d). Please update happyDomain", version, len(migrations))
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}
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for v, migration := range migrations[version:] {
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log.Printf("Doing migration from %d to %d", version+v, version+v+1)
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// Do the migration
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if err = migration(s); err != nil {
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return
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}
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// Save the step
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if err = s.put("version", version+v+1); err != nil {
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return
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}
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log.Printf("Migration from %d to %d DONE!", version+v, version+v+1)
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}
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return nil
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}
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