kurz/cmd/kurzd/migrate_downto.go

package main

import (
	"os"

	_ "code.osinet.fr/fgm/kurz/migrations"
	"github.com/pressly/goose"
	"github.com/spf13/cobra"
)

var cmdMigrateDownTo = &cobra.Command{
	Args:  migrateVersionValidator,
	Long:  "Roll the Kurz schema back to a specific version. Kurz version of 'goose down-to'.",
	Run:   migrateDownToHandler,
	Short: "Roll back to specific version",
	Use:   "down-to <version>",
}

func init() {
	cmdMigrate.AddCommand(cmdMigrateDownTo)
}

// migrateDownToHandler implements the "kurzd migrate down-to" command.
func migrateDownToHandler(cmd *cobra.Command, args []string) {
	dbDriver, dbDsn := parseDbCred()
	db, err := dbDial(dbDriver, dbDsn)
	if err != nil {
		panic(err)
	}
	defer db.Close()

	cwd, err := os.Getwd()
	if err != nil {
		panic(err)
	}

	goose.SetDialect(dbDriver)
	goose.DownTo(db, cwd, migrateTargetVersion)
}