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upgrade_repo_v2: Use atomic replace for supported backends

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This commit is contained in:
Michael Eischer
2022-05-01 20:07:29 +02:00
parent 7559d2f105
commit e36a40db10
13 changed files with 82 additions and 17 deletions
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33
internal/mock/backend.go
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@@ -11,18 +11,19 @@ import (
// Backend implements a mock backend.
type Backend struct {
CloseFn func() error
IsNotExistFn func(err error) bool
SaveFn func(ctx context.Context, h restic.Handle, rd restic.RewindReader) error
OpenReaderFn func(ctx context.Context, h restic.Handle, length int, offset int64) (io.ReadCloser, error)
StatFn func(ctx context.Context, h restic.Handle) (restic.FileInfo, error)
ListFn func(ctx context.Context, t restic.FileType, fn func(restic.FileInfo) error) error
RemoveFn func(ctx context.Context, h restic.Handle) error
TestFn func(ctx context.Context, h restic.Handle) (bool, error)
DeleteFn func(ctx context.Context) error
ConnectionsFn func() uint
LocationFn func() string
HasherFn func() hash.Hash
CloseFn func() error
IsNotExistFn func(err error) bool
SaveFn func(ctx context.Context, h restic.Handle, rd restic.RewindReader) error
OpenReaderFn func(ctx context.Context, h restic.Handle, length int, offset int64) (io.ReadCloser, error)
StatFn func(ctx context.Context, h restic.Handle) (restic.FileInfo, error)
ListFn func(ctx context.Context, t restic.FileType, fn func(restic.FileInfo) error) error
RemoveFn func(ctx context.Context, h restic.Handle) error
TestFn func(ctx context.Context, h restic.Handle) (bool, error)
DeleteFn func(ctx context.Context) error
ConnectionsFn func() uint
LocationFn func() string
HasherFn func() hash.Hash
HasAtomicReplaceFn func() bool
}
// NewBackend returns new mock Backend instance
@@ -66,6 +67,14 @@ func (m *Backend) Hasher() hash.Hash {
return m.HasherFn()
}
// HasAtomicReplace returns whether Save() can atomically replace files
func (m *Backend) HasAtomicReplace() bool {
if m.HasAtomicReplaceFn == nil {
return false
}
return m.HasAtomicReplaceFn()
}
// IsNotExist returns true if the error is caused by a missing file.
func (m *Backend) IsNotExist(err error) bool {
if m.IsNotExistFn == nil {