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Panic on duplicate migration version

pull/8/head
Vojtech Vitek (V-Teq) 2016-08-15 14:11:46 -04:00
parent caf14b8e35
commit 52af0e6a35
1 changed files with 8 additions and 3 deletions
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11
migrate.go
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@ -39,9 +39,14 @@ type Migration struct {
type migrationSorter []*Migration type migrationSorter []*Migration
// helpers so we can use pkg sort // helpers so we can use pkg sort
func (ms migrationSorter) Len() int { return len(ms) } func (ms migrationSorter) Len() int { return len(ms) }
func (ms migrationSorter) Swap(i, j int) { ms[i], ms[j] = ms[j], ms[i] } func (ms migrationSorter) Swap(i, j int) { ms[i], ms[j] = ms[j], ms[i] }
func (ms migrationSorter) Less(i, j int) bool { return ms[i].Version < ms[j].Version } func (ms migrationSorter) Less(i, j int) bool {
if ms[i].Version == ms[j].Version {
panic(fmt.Sprintf("goose: duplicate version %v detected", ms[i].Version))
}
return ms[i].Version < ms[j].Version
}
func AddMigration(up func(*sql.Tx) error, down func(*sql.Tx) error) { func AddMigration(up func(*sql.Tx) error, down func(*sql.Tx) error) {
_, filename, _, _ := runtime.Caller(1) _, filename, _, _ := runtime.Caller(1)