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migration_01_to_11: remove version checking for migration tests

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This commit is contained in:
Joost Jager
2019-10-31 11:25:04 +01:00
parent 60503d6c44
commit 4486a06b1a
6 changed files with 6 additions and 202 deletions
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87
channeldb/migration_01_to_11/db.go
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@@ -21,11 +21,6 @@ const (
// up-to-date version of the database.
type migration func(tx *bbolt.Tx) error
type version struct {
number uint32
migration migration
}
var (
// Big endian is the preferred byte order, due to cursor scans over
// integer keys iterating in order.
@@ -220,89 +215,7 @@ func (d *DB) FetchClosedChannels(pendingOnly bool) ([]*ChannelCloseSummary, erro
return chanSummaries, nil
}
// syncVersions function is used for safe db version synchronization. It
// applies migration functions to the current database and recovers the
// previous state of db if at least one error/panic appeared during migration.
func (d *DB) syncVersions(versions []version) error {
meta, err := d.FetchMeta(nil)
if err != nil {
if err == ErrMetaNotFound {
meta = &Meta{}
} else {
return err
}
}
latestVersion := getLatestDBVersion(versions)
log.Infof("Checking for schema update: latest_version=%v, "+
"db_version=%v", latestVersion, meta.DbVersionNumber)
switch {
// If the database reports a higher version that we are aware of, the
// user is probably trying to revert to a prior version of lnd. We fail
// here to prevent reversions and unintended corruption.
case meta.DbVersionNumber > latestVersion:
log.Errorf("Refusing to revert from db_version=%d to "+
"lower version=%d", meta.DbVersionNumber,
latestVersion)
return ErrDBReversion
// If the current database version matches the latest version number,
// then we don't need to perform any migrations.
case meta.DbVersionNumber == latestVersion:
return nil
}
log.Infof("Performing database schema migration")
// Otherwise, we fetch the migrations which need to applied, and
// execute them serially within a single database transaction to ensure
// the migration is atomic.
migrations, migrationVersions := getMigrationsToApply(
versions, meta.DbVersionNumber,
)
return d.Update(func(tx *bbolt.Tx) error {
for i, migration := range migrations {
if migration == nil {
continue
}
log.Infof("Applying migration #%v", migrationVersions[i])
if err := migration(tx); err != nil {
log.Infof("Unable to apply migration #%v",
migrationVersions[i])
return err
}
}
meta.DbVersionNumber = latestVersion
return putMeta(meta, tx)
})
}
// ChannelGraph returns a new instance of the directed channel graph.
func (d *DB) ChannelGraph() *ChannelGraph {
return d.graph
}
func getLatestDBVersion(versions []version) uint32 {
return versions[len(versions)-1].number
}
// getMigrationsToApply retrieves the migration function that should be
// applied to the database.
func getMigrationsToApply(versions []version, version uint32) ([]migration, []uint32) {
migrations := make([]migration, 0, len(versions))
migrationVersions := make([]uint32, 0, len(versions))
for _, v := range versions {
if v.number > version {
migrations = append(migrations, v.migration)
migrationVersions = append(migrationVersions, v.number)
}
}
return migrations, migrationVersions
}