forked from TrueCloudLab/restic
113 lines
2.5 KiB
Go
113 lines
2.5 KiB
Go
package main
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import (
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"github.com/restic/restic/internal/migrations"
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"github.com/restic/restic/internal/restic"
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"github.com/spf13/cobra"
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)
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var cmdMigrate = &cobra.Command{
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Use: "migrate [flags] [name]",
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Short: "Apply migrations",
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Long: `
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The "migrate" command applies migrations to a repository. When no migration
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name is explicitly given, a list of migrations that can be applied is printed.
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EXIT STATUS
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===========
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Exit status is 0 if the command was successful, and non-zero if there was any error.
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`,
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DisableAutoGenTag: true,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runMigrate(migrateOptions, globalOptions, args)
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},
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}
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// MigrateOptions bundles all options for the 'check' command.
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type MigrateOptions struct {
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Force bool
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}
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var migrateOptions MigrateOptions
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func init() {
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cmdRoot.AddCommand(cmdMigrate)
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f := cmdMigrate.Flags()
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f.BoolVarP(&migrateOptions.Force, "force", "f", false, `apply a migration a second time`)
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}
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func checkMigrations(opts MigrateOptions, gopts GlobalOptions, repo restic.Repository) error {
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ctx := gopts.ctx
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Printf("available migrations:\n")
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for _, m := range migrations.All {
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ok, err := m.Check(ctx, repo)
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if err != nil {
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return err
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}
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if ok {
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Printf(" %v: %v\n", m.Name(), m.Desc())
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}
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}
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return nil
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}
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func applyMigrations(opts MigrateOptions, gopts GlobalOptions, repo restic.Repository, args []string) error {
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ctx := gopts.ctx
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var firsterr error
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for _, name := range args {
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for _, m := range migrations.All {
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if m.Name() == name {
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ok, err := m.Check(ctx, repo)
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if err != nil {
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return err
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}
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if !ok {
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if !opts.Force {
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Warnf("migration %v cannot be applied: check failed\nIf you want to apply this migration anyway, re-run with option --force\n", m.Name())
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continue
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}
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Warnf("check for migration %v failed, continuing anyway\n", m.Name())
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}
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Printf("applying migration %v...\n", m.Name())
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if err = m.Apply(ctx, repo); err != nil {
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Warnf("migration %v failed: %v\n", m.Name(), err)
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if firsterr == nil {
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firsterr = err
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}
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continue
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}
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Printf("migration %v: success\n", m.Name())
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}
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}
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}
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return firsterr
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}
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func runMigrate(opts MigrateOptions, gopts GlobalOptions, args []string) error {
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repo, err := OpenRepository(gopts)
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if err != nil {
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return err
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}
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lock, err := lockRepoExclusive(gopts.ctx, repo)
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defer unlockRepo(lock)
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if err != nil {
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return err
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}
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if len(args) == 0 {
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return checkMigrations(opts, gopts, repo)
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}
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return applyMigrations(opts, gopts, repo, args)
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}
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