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|
package main
import (
"flag"
"fmt"
"strings"
migrate "github.com/rubenv/sql-migrate"
)
type RedoCommand struct {
}
func (c *RedoCommand) Help() string {
helpText := `
Usage: sql-migrate redo [options] ...
Reapply the last migration.
Options:
-config=dbconfig.yml Configuration file to use.
-env="development" Environment.
-dryrun Don't apply migrations, just print them.
`
return strings.TrimSpace(helpText)
}
func (c *RedoCommand) Synopsis() string {
return "Reapply the last migration"
}
func (c *RedoCommand) Run(args []string) int {
var dryrun bool
cmdFlags := flag.NewFlagSet("redo", flag.ContinueOnError)
cmdFlags.Usage = func() { ui.Output(c.Help()) }
cmdFlags.BoolVar(&dryrun, "dryrun", false, "Don't apply migrations, just print them.")
ConfigFlags(cmdFlags)
if err := cmdFlags.Parse(args); err != nil {
return 1
}
env, err := GetEnvironment()
if err != nil {
ui.Error(fmt.Sprintf("Could not parse config: %s", err))
return 1
}
db, dialect, err := GetConnection(env)
if err != nil {
ui.Error(err.Error())
return 1
}
source := migrate.FileMigrationSource{
Dir: env.Dir,
}
migrations, _, err := migrate.PlanMigration(db, dialect, source, migrate.Down, 1)
if err != nil {
ui.Error(fmt.Sprintf("Migration (redo) failed: %v", err))
return 1
} else if len(migrations) == 0 {
ui.Output("Nothing to do!")
return 0
}
if dryrun {
PrintMigration(migrations[0], migrate.Down)
PrintMigration(migrations[0], migrate.Up)
} else {
_, err := migrate.ExecMax(db, dialect, source, migrate.Down, 1)
if err != nil {
ui.Error(fmt.Sprintf("Migration (down) failed: %s", err))
return 1
}
_, err = migrate.ExecMax(db, dialect, source, migrate.Up, 1)
if err != nil {
ui.Error(fmt.Sprintf("Migration (up) failed: %s", err))
return 1
}
ui.Output(fmt.Sprintf("Reapplied migration %s.", migrations[0].Id))
}
return 0
}
|
