ceremonyclient/pebble/internal/base/cleaner.go

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2024-01-03 07:31:42 +00:00
// Copyright 2019 The LevelDB-Go and Pebble Authors. All rights reserved. Use
// of this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
package base
import "github.com/cockroachdb/pebble/vfs"
// Cleaner cleans obsolete files.
type Cleaner interface {
Clean(fs vfs.FS, fileType FileType, path string) error
}
// NeedsFileContents is implemented by a cleaner that needs the contents of the
// files that it is being asked to clean.
type NeedsFileContents interface {
needsFileContents()
}
// DeleteCleaner deletes file.
type DeleteCleaner struct{}
// Clean removes file.
func (DeleteCleaner) Clean(fs vfs.FS, fileType FileType, path string) error {
return fs.Remove(path)
}
func (DeleteCleaner) String() string {
return "delete"
}
// ArchiveCleaner archives file instead delete.
type ArchiveCleaner struct{}
var _ NeedsFileContents = ArchiveCleaner{}
// Clean archives file.
func (ArchiveCleaner) Clean(fs vfs.FS, fileType FileType, path string) error {
switch fileType {
case FileTypeLog, FileTypeManifest, FileTypeTable:
destDir := fs.PathJoin(fs.PathDir(path), "archive")
if err := fs.MkdirAll(destDir, 0755); err != nil {
return err
}
destPath := fs.PathJoin(destDir, fs.PathBase(path))
return fs.Rename(path, destPath)
default:
return fs.Remove(path)
}
}
func (ArchiveCleaner) String() string {
return "archive"
}
func (ArchiveCleaner) needsFileContents() {
}