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lib/db: Store versions for last successful db migration (#7140)

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Simon Frei 2020-11-23 18:31:32 +01:00 committed by GitHub
parent cc4071d0ba
commit 8ebd893349
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1 changed files with 42 additions and 38 deletions
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80
lib/db/schemaupdater.go
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@ -17,18 +17,6 @@ import (
"github.com/syncthing/syncthing/lib/protocol" "github.com/syncthing/syncthing/lib/protocol"
) )
// List of all dbVersion to dbMinSyncthingVersion pairs for convenience
// 0: v0.14.0
// 1: v0.14.46
// 2: v0.14.48
// 3-5: v0.14.49
// 6: v0.14.50
// 7: v0.14.53
// 8-9: v1.4.0
// 10-11: v1.6.0
// 12-13: v1.7.0
// 14: v1.9.0
//
// dbMigrationVersion is for migrations that do not change the schema and thus // dbMigrationVersion is for migrations that do not change the schema and thus
// do not put restrictions on downgrades (e.g. for repairs after a bugfix). // do not put restrictions on downgrades (e.g. for repairs after a bugfix).
const ( const (
@ -37,6 +25,13 @@ const (
dbMinSyncthingVersion = "v1.9.0" dbMinSyncthingVersion = "v1.9.0"
) )
type migration struct {
schemaVersion int64
migrationVersion int64
minSyncthingVersion string
migration func(prevSchema int) error
}
var errFolderMissing = errors.New("folder present in global list but missing in keyer index") var errFolderMissing = errors.New("folder present in global list but missing in keyer index")
type databaseDowngradeError struct { type databaseDowngradeError struct {
@ -96,24 +91,19 @@ func (db *schemaUpdater) updateSchema() error {
return nil return nil
} }
type migration struct { migrations := []migration{
schemaVersion int64 {1, 1, "v0.14.0", db.updateSchema0to1},
migrationVersion int64 {2, 2, "v0.14.46", db.updateSchema1to2},
migration func(prevSchema int) error {3, 3, "v0.14.48", db.updateSchema2to3},
} {5, 5, "v0.14.49", db.updateSchemaTo5},
var migrations = []migration{ {6, 6, "v0.14.50", db.updateSchema5to6},
{1, 1, db.updateSchema0to1}, {7, 7, "v0.14.53", db.updateSchema6to7},
{2, 2, db.updateSchema1to2}, {9, 9, "v1.4.0", db.updateSchemaTo9},
{3, 3, db.updateSchema2to3}, {10, 10, "v1.6.0", db.updateSchemaTo10},
{5, 5, db.updateSchemaTo5}, {11, 11, "v1.6.0", db.updateSchemaTo11},
{6, 6, db.updateSchema5to6}, {13, 13, "v1.7.0", db.updateSchemaTo13},
{7, 7, db.updateSchema6to7}, {14, 14, "v1.9.0", db.updateSchemaTo14},
{9, 9, db.updateSchemaTo9}, {14, 15, "v1.9.0", db.migration15},
{10, 10, db.updateSchemaTo10},
{11, 11, db.updateSchemaTo11},
{13, 13, db.updateSchemaTo13},
{14, 14, db.updateSchemaTo14},
{14, 15, db.migration15},
} }
for _, m := range migrations { for _, m := range migrations {
@ -122,23 +112,37 @@ func (db *schemaUpdater) updateSchema() error {
if err := m.migration(int(prevVersion)); err != nil { if err := m.migration(int(prevVersion)); err != nil {
return fmt.Errorf("failed to do migration %v: %w", m.migrationVersion, err) return fmt.Errorf("failed to do migration %v: %w", m.migrationVersion, err)
} }
if err := db.writeVersions(m, miscDB); err != nil {
return fmt.Errorf("failed to write versions after migration %v: %w", m.migrationVersion, err)
}
} }
} }
if err := miscDB.PutInt64("dbVersion", dbVersion); err != nil { if err := db.writeVersions(migration{
return err schemaVersion: dbVersion,
} migrationVersion: dbMigrationVersion,
if err := miscDB.PutString("dbMinSyncthingVersion", dbMinSyncthingVersion); err != nil { minSyncthingVersion: dbMinSyncthingVersion,
return err }, miscDB); err != nil {
} return fmt.Errorf("failed to write versions after migrations: %w", err)
if err := miscDB.PutInt64("dbMigrationVersion", dbMigrationVersion); err != nil {
return err
} }
l.Infoln("Compacting database after migration...") l.Infoln("Compacting database after migration...")
return db.Compact() return db.Compact()
} }
func (*schemaUpdater) writeVersions(m migration, miscDB *NamespacedKV) error {
if err := miscDB.PutInt64("dbVersion", m.schemaVersion); err != nil && err == nil {
return err
}
if err := miscDB.PutString("dbMinSyncthingVersion", m.minSyncthingVersion); err != nil && err == nil {
return err
}
if err := miscDB.PutInt64("dbMigrationVersion", m.migrationVersion); err != nil && err == nil {
return err
}
return nil
}
func (db *schemaUpdater) updateSchema0to1(_ int) error { func (db *schemaUpdater) updateSchema0to1(_ int) error {
t, err := db.newReadWriteTransaction() t, err := db.newReadWriteTransaction()
if err != nil { if err != nil {