migrate/database/util.go
Dale Hui 97eb0d191b Fix broken GenerateAdvisoryLockId() test
- Add it to the test suite to ensure that it doesn't break again
2018-07-24 17:55:58 -07:00

16 lines
371 B
Go

package database
import (
"fmt"
"hash/crc32"
)
const advisoryLockIdSalt uint = 1486364155
// GenerateAdvisoryLockId inspired by rails migrations, see https://goo.gl/8o9bCT
func GenerateAdvisoryLockId(databaseName string) (string, error) {
sum := crc32.ChecksumIEEE([]byte(databaseName))
sum = sum * uint32(advisoryLockIdSalt)
return fmt.Sprintf("%v", sum), nil
}