mirror of
https://github.com/luxfi/zapdb.git
synced 2026-10-30 15:12:20 +00:00
zeekayandHanzo Dev
fe8d85d663
The module has been github.com/luxfi/zapdb for a while, but the package inside it still declared itself badger, so every consumer had to write zapdb "github.com/luxfi/zapdb" // package badger and the alias existed only to paper over the mismatch. 56 root files and the 134 qualified references inside the repo now say zapdb. Backward compatible in both directions: an existing consumer with the alias keeps compiling (the alias is now merely redundant), and one without it starts compiling instead of failing on an undefined zapdb. Directory badger/ and its cmd package are untouched — that is the CLI, and its binary is named badger. Build and vet clean; suite green except TestZRestore, which wants a /tmp/zb/src benchmark fixture and fails identically without this change. Co-authored-by: Hanzo Dev <[email protected]>
81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
/*
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* SPDX-FileCopyrightText: © 2017-2025 Istari Digital, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package cmd
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import (
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"bufio"
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"math"
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"os"
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"github.com/spf13/cobra"
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"github.com/luxfi/zapdb"
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)
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var bo = struct {
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backupFile string
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numVersions int
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}{}
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// backupCmd represents the backup command
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var backupCmd = &cobra.Command{
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Use: "backup",
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Short: "Backup Badger database.",
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Long: `Backup Badger database to a file in a version-agnostic manner.
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Iterates over each key-value pair, encodes it along with its metadata and
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version in protocol buffers and writes them to a file. This file can later be
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used by the restore command to create an identical copy of the
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database.`,
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RunE: doBackup,
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}
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func init() {
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RootCmd.AddCommand(backupCmd)
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backupCmd.Flags().StringVarP(&bo.backupFile, "backup-file", "f",
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"badger.bak", "File to backup to")
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backupCmd.Flags().IntVarP(&bo.numVersions, "num-versions", "n",
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0, "Number of versions to keep. A value <= 0 means keep all versions.")
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}
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func doBackup(cmd *cobra.Command, args []string) error {
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opt := zapdb.DefaultOptions(sstDir).
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WithValueDir(vlogDir).
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WithNumVersionsToKeep(math.MaxInt32)
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if bo.numVersions > 0 {
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opt.NumVersionsToKeep = bo.numVersions
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}
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// Open DB
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db, err := zapdb.Open(opt)
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if err != nil {
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return err
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}
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defer db.Close()
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// Create File
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f, err := os.Create(bo.backupFile)
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if err != nil {
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return err
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}
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bw := bufio.NewWriterSize(f, 64<<20)
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if _, err = db.Backup(bw, 0); err != nil {
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return err
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}
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if err = bw.Flush(); 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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return f.Close()
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}
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