mirror of
https://github.com/offen/docker-volume-backup.git
synced 2024-11-10 00:30:29 +01:00
do not use scanner to write file in chunks
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parent
f4f4fa9e74
commit
ec87bd27e7
@ -4,7 +4,6 @@
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package main
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package main
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import (
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import (
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"bufio"
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"bytes"
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"bytes"
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"context"
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"context"
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"errors"
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"errors"
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@ -276,26 +275,11 @@ func (s *script) encryptBackup() error {
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return fmt.Errorf("encryptBackup: error encrypting backup file: %w", err)
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return fmt.Errorf("encryptBackup: error encrypting backup file: %w", err)
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}
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}
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file, err := os.Open(s.file)
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b, err := ioutil.ReadFile(s.file)
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if err != nil {
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if err != nil {
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return fmt.Errorf("encryptBackup: error opening unencrypted backup file: %w", err)
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return fmt.Errorf("encryptBackup: error opening unencrypted backup file: %w", err)
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}
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}
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pt.Write(b)
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// backup files might be very large, so they are being read in chunks instead
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// of loading them into memory once.
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scanner := bufio.NewScanner(file)
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chunk := make([]byte, 0, 1024*1024)
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scanner.Buffer(chunk, 10*1024*1024)
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for scanner.Scan() {
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_, err = pt.Write(scanner.Bytes())
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if err != nil {
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file.Close()
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pt.Close()
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return fmt.Errorf("encryptBackup: error encrypting backup contents: %w", err)
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}
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}
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file.Close()
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pt.Close()
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pt.Close()
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gpgFile := fmt.Sprintf("%s.gpg", s.file)
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gpgFile := fmt.Sprintf("%s.gpg", s.file)
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