restic/internal/backend/util/defaults.go

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package util
import (
"context"
"io"
"github.com/restic/restic/internal/backend"
)
// DefaultLoad implements Backend.Load using lower-level openReader func
func DefaultLoad(ctx context.Context, h backend.Handle, length int, offset int64,
openReader func(ctx context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error),
fn func(rd io.Reader) error) error {
rd, err := openReader(ctx, h, length, offset)
if err != nil {
return err
}
err = fn(rd)
if err != nil {
_ = rd.Close() // ignore secondary errors closing the reader
return err
}
return rd.Close()
}
// DefaultDelete removes all restic keys in the bucket. It will not remove the bucket itself.
func DefaultDelete(ctx context.Context, be backend.Backend) error {
alltypes := []backend.FileType{
backend.PackFile,
backend.KeyFile,
backend.LockFile,
backend.SnapshotFile,
backend.IndexFile}
for _, t := range alltypes {
err := be.List(ctx, t, func(fi backend.FileInfo) error {
return be.Remove(ctx, backend.Handle{Type: t, Name: fi.Name})
})
if err != nil {
return nil
}
}
err := be.Remove(ctx, backend.Handle{Type: backend.ConfigFile})
if err != nil && be.IsNotExist(err) {
err = nil
}
return err
}