goose/db.go

50 lines
1.1 KiB
Go

package goose
import (
"database/sql"
"fmt"
"github.com/go-sql-driver/mysql"
)
// normalizeMySQLDSN parses the dsn used with the mysql driver to always have
// the parameter `parseTime` set to true. This allows internal goose logic
// to assume that DATETIME/DATE/TIMESTAMP can be scanned into the time.Time
// type.
func normalizeMySQLDSN(dsn string) (string, error) {
config, err := mysql.ParseDSN(dsn)
if err != nil {
return "", err
}
config.ParseTime = true
return config.FormatDSN(), nil
}
// OpenDBWithDriver creates a connection a database, and modifies goose
// internals to be compatible with the supplied driver by calling SetDialect.
func OpenDBWithDriver(driver string, dbstring string) (*sql.DB, error) {
if err := SetDialect(driver); err != nil {
return nil, err
}
switch driver {
case "redshift":
driver = "postgres"
case "tidb":
driver = "mysql"
}
switch driver {
case "postgres", "sqlite3":
return sql.Open(driver, dbstring)
case "mysql":
dsn, err := normalizeMySQLDSN(dbstring)
if err != nil {
return nil, err
}
return sql.Open(driver, dsn)
default:
}
return nil, fmt.Errorf("unsupported driver %s", driver)
}