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restore_db.go
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restore_db.go
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// Copyright (c) 2021 patrick-ogrady
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/patrick-ogrady/snowplow/pkg/compression"
"github.com/patrick-ogrady/snowplow/pkg/storage"
)
// restoreDbCmd represents the restore db command
var restoreDbCmd = &cobra.Command{
Use: "restore [bucket] [name]",
Short: "restore db from google cloud storage",
RunE: restoreDbFunc,
Args: cobra.ExactArgs(2), // nolint:gomnd
}
func init() {
dbCmd.AddCommand(restoreDbCmd)
// Here you will define your flags and configuration settings.
// Cobra supports Persistent Flags which will work for this command
// and all subcommands, e.g.:
// restoreCmd.PersistentFlags().String("foo", "", "A help for foo")
// Cobra supports local flags which will only run when this command
// is called directly, e.g.:
// restoreCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
}
func restoreDbFunc(cmd *cobra.Command, args []string) error {
// Check if dbDirectory is empty
if _, err := os.Stat(dbDirectory); !os.IsNotExist(err) {
return fmt.Errorf("%s is not empty directory", dbDirectory)
}
// Download backup
bucket := args[0]
name := args[1]
tarFilePath := fmt.Sprintf("%s.tar.gz", name)
if err := storage.Download(
Context,
bucket,
tarFilePath,
); err != nil {
return fmt.Errorf("%w: unable to download %s", err, tarFilePath)
}
// Untar credentials
if err := compression.Decompress(tarFilePath, "."); err != nil {
return fmt.Errorf("%w: could not decompress %s", err, tarFilePath)
}
// Cleanup
if err := os.Remove(tarFilePath); err != nil {
return fmt.Errorf("%w: unable to delete %s", err, tarFilePath)
}
fmt.Printf("successfully restored %s to %s\n", name, dbDirectory)
return nil
}