mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
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55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// Copyright 2012 The LevelDB-Go and Pebble Authors. All rights reserved. Use
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// of this source code is governed by a BSD-style license that can be found in
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// the LICENSE file.
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package pebble
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import (
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"fmt"
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"github.com/cockroachdb/pebble/internal/base"
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"github.com/cockroachdb/pebble/vfs"
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)
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type fileType = base.FileType
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// FileNum is an identifier for a file within a database.
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type FileNum = base.FileNum
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const (
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fileTypeLog = base.FileTypeLog
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fileTypeLock = base.FileTypeLock
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fileTypeTable = base.FileTypeTable
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fileTypeManifest = base.FileTypeManifest
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fileTypeCurrent = base.FileTypeCurrent
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fileTypeOptions = base.FileTypeOptions
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fileTypeTemp = base.FileTypeTemp
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fileTypeOldTemp = base.FileTypeOldTemp
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)
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// setCurrentFile sets the CURRENT file to point to the manifest with
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// provided file number.
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//
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// NB: This is a low-level routine and typically not what you want to
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// use. Newer versions of Pebble running newer format major versions do
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// not use the CURRENT file. See setCurrentFunc in version_set.go.
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func setCurrentFile(dirname string, fs vfs.FS, fileNum base.DiskFileNum) error {
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newFilename := base.MakeFilepath(fs, dirname, fileTypeCurrent, fileNum)
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oldFilename := base.MakeFilepath(fs, dirname, fileTypeTemp, fileNum)
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fs.Remove(oldFilename)
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f, err := fs.Create(oldFilename)
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if err != nil {
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return err
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}
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if _, err := fmt.Fprintf(f, "MANIFEST-%s\n", fileNum); err != nil {
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return err
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}
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if err := f.Sync(); err != nil {
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return err
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}
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if err := f.Close(); err != nil {
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return err
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}
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return fs.Rename(oldFilename, newFilename)
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}
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