wings/server/backup/backup_local.go

109 lines
2.8 KiB
Go
Raw Normal View History

package backup
import (
"context"
"io"
"os"
"emperror.dev/errors"
"github.com/juju/ratelimit"
"github.com/mholt/archiver/v4"
"github.com/pterodactyl/wings/config"
"github.com/pterodactyl/wings/remote"
"github.com/pterodactyl/wings/server/filesystem"
)
type LocalBackup struct {
Backup
}
var _ BackupInterface = (*LocalBackup)(nil)
func NewLocal(client remote.Client, uuid string, ignore string) *LocalBackup {
2021-01-18 05:05:51 +00:00
return &LocalBackup{
Backup{
2021-03-07 18:02:03 +00:00
client: client,
2021-01-18 05:05:51 +00:00
Uuid: uuid,
Ignore: ignore,
adapter: LocalBackupAdapter,
},
}
}
// LocateLocal finds the backup for a server and returns the local path. This
// will obviously only work if the backup was created as a local backup.
func LocateLocal(client remote.Client, uuid string) (*LocalBackup, os.FileInfo, error) {
b := NewLocal(client, uuid, "")
st, err := os.Stat(b.Path())
if err != nil {
return nil, nil, err
}
if st.IsDir() {
return nil, nil, errors.New("invalid archive, is directory")
}
return b, st, nil
}
// Remove removes a backup from the system.
func (b *LocalBackup) Remove() error {
return os.Remove(b.Path())
}
// WithLogContext attaches additional context to the log output for this backup.
func (b *LocalBackup) WithLogContext(c map[string]interface{}) {
b.logContext = c
}
// Generate generates a backup of the selected files and pushes it to the
// defined location for this instance.
func (b *LocalBackup) Generate(ctx context.Context, basePath, ignore string) (*ArchiveDetails, error) {
2021-03-07 18:02:03 +00:00
a := &filesystem.Archive{
BasePath: basePath,
Ignore: ignore,
}
b.log().WithField("path", b.Path()).Info("creating backup for server")
2022-11-15 01:25:01 +00:00
if err := a.Create(ctx, b.Path()); err != nil {
return nil, err
}
b.log().Info("created backup successfully")
ad, err := b.Details(ctx, nil)
if err != nil {
return nil, errors.WrapIf(err, "backup: failed to get archive details for local backup")
}
return ad, nil
}
// Restore will walk over the archive and call the callback function for each
// file encountered.
func (b *LocalBackup) Restore(ctx context.Context, _ io.Reader, callback RestoreCallback) error {
f, err := os.Open(b.Path())
if err != nil {
return err
}
defer f.Close()
var reader io.Reader = f
// Steal the logic we use for making backups which will be applied when restoring
// this specific backup. This allows us to prevent overloading the disk unintentionally.
if writeLimit := int64(config.Get().System.Backups.WriteLimit * 1024 * 1024); writeLimit > 0 {
reader = ratelimit.Reader(f, ratelimit.NewBucketWithRate(float64(writeLimit), writeLimit))
}
if err := format.Extract(ctx, reader, nil, func(ctx context.Context, f archiver.File) error {
r, err := f.Open()
if err != nil {
return err
}
defer r.Close()
return callback(f.NameInArchive, f.FileInfo, r)
}); err != nil {
return err
}
return nil
}