Example #1
0
// ShouldRun decides if the migration should be applied or removed, based on
// the direction and desired version to reach.
func ShouldRun(tx *sql.Tx, migration string, direction Direction, desiredVersion int) bool {
	version, err := Revision(migration)
	if err != nil {
		glog.Warningf("Unable to determine the revision of %s", migration)
		return false
	}

	switch direction {
	case Up:
		return IsUp(version, desiredVersion) && !IsMigrated(tx, migration)
	case Down:
		return IsDown(version, desiredVersion) && IsMigrated(tx, migration)
	}
	return false
}
Example #2
0
// LatestRevision returns the latest revision available from the SQL files in
// the migrations directory.
func LatestRevision(directory string) int {
	migrations, err := Available(directory, Down)
	if err != nil {
		println(err.Error())
		return 0
	}

	if len(migrations) == 0 {
		return 0
	}

	// Find a valid filename
	for _, filename := range migrations {
		rev, err := Revision(filename)
		if err != nil {
			glog.Warningf("Invalid migration: %s", filename)
			continue
		}

		return rev
	}

	return 0
}