github.com/zuoyebang/bitalosdb@v1.1.1-0.20240516111551-79a8c4d8ce20/internal/base/cleaner.go (about)

     1  // Copyright 2021 The Bitalosdb author(hustxrb@163.com) and other contributors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package base
    16  
    17  import (
    18  	"github.com/zuoyebang/bitalosdb/internal/vfs"
    19  )
    20  
    21  type Cleaner interface {
    22  	Clean(fs vfs.FS, fileType FileType, path string) error
    23  }
    24  
    25  type NeedsFileContents interface {
    26  	needsFileContents()
    27  }
    28  
    29  type DeleteCleaner struct{}
    30  
    31  func (DeleteCleaner) Clean(fs vfs.FS, fileType FileType, path string) error {
    32  	return fs.Remove(path)
    33  }
    34  
    35  func (DeleteCleaner) String() string {
    36  	return "delete"
    37  }
    38  
    39  type ArchiveCleaner struct{}
    40  
    41  var _ NeedsFileContents = ArchiveCleaner{}
    42  
    43  func (ArchiveCleaner) Clean(fs vfs.FS, fileType FileType, path string) error {
    44  	switch fileType {
    45  	case FileTypeLog, FileTypeManifest:
    46  		destDir := fs.PathJoin(fs.PathDir(path), "archive")
    47  
    48  		if err := fs.MkdirAll(destDir, 0755); err != nil {
    49  			return err
    50  		}
    51  
    52  		destPath := fs.PathJoin(destDir, fs.PathBase(path))
    53  		return fs.Rename(path, destPath)
    54  
    55  	default:
    56  		return fs.Remove(path)
    57  	}
    58  }
    59  
    60  func (ArchiveCleaner) String() string {
    61  	return "archive"
    62  }
    63  
    64  func (ArchiveCleaner) needsFileContents() {
    65  }