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https://github.com/luxfi/zapdb.git
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Ibrahim JarifandGitHub
772b18cd7a
According to https://golang.org/doc/devel/release.html#policy, golang supports only the last two major versions. I propose we drop go 1.11 builds from Travis CI. One of the reasons being the builds for PR on https://github.com/dgraph-io/badger/pull/1305 (https://travis-ci.org/github/dgraph-io/badger/jobs/675278785) fails on go 1.11 because of some go module issue. This PR drops support for go 1.11. Existing users on go 1.11 will not be affected. This PR contains the following changes 1. Remove go 1.11 build from Travis. 2. Remove the `FileSync` function. We don't need it for go version greater than 1.11. See https://github.com/dgraph-io/badger/issues/563 . The `FileSync` function is replaced with `fd.Sync()` which internally uses `FNCTL` system call. 3. Update Readme: Set minimum go version to go1.12
82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
/*
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* Copyright 2017 Dgraph Labs, Inc. and Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bufio"
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"os"
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"github.com/dgraph-io/badger/v2"
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"github.com/spf13/cobra"
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)
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var backupFile string
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var truncate bool
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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(&backupFile, "backup-file", "f",
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"badger.bak", "File to backup to")
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backupCmd.Flags().BoolVarP(&truncate, "truncate", "t",
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false, "Allow value log truncation if required.")
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}
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func doBackup(cmd *cobra.Command, args []string) error {
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// Open DB
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db, err := badger.Open(badger.DefaultOptions(sstDir).
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WithValueDir(vlogDir).
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WithTruncate(truncate))
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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(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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