mirror of
https://github.com/Awuqing/BackupX.git
synced 2026-05-13 09:00:15 +08:00
e5a4aaadb2
The previous approach downloaded the entire backup file after upload to compute a remote SHA-256, which doubles bandwidth cost for every backup. New approach: - Local SHA-256 is still computed before upload (stored in record for audit) - After upload, use provider.List() to check remote file size (single API call) - If remote size is 0 or mismatches local size → mark failed + auto-delete - If List() fails, log a warning but don't block (file may have uploaded fine) This catches 0KB corrupted uploads with zero download overhead.
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package backup
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"path/filepath"
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"strings"
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"time"
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)
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func createTempArtifact(baseDir, taskName string, extension string) (string, string, error) {
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tempDir, err := os.MkdirTemp(baseDir, "backupx-run-*")
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if err != nil {
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return "", "", fmt.Errorf("create temp dir: %w", err)
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}
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base := sanitizeFileName(taskName)
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if base == "" {
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base = "backup"
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}
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fileName := fmt.Sprintf("%s_%s.%s", base, time.Now().UTC().Format("20060102T150405"), strings.TrimPrefix(extension, "."))
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return tempDir, filepath.Join(tempDir, fileName), nil
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}
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// SHA256File 计算文件的 SHA-256 哈希值，返回十六进制字符串
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func SHA256File(path string) (string, error) {
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file, err := os.Open(path)
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if err != nil {
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return "", fmt.Errorf("open file for checksum: %w", err)
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}
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defer file.Close()
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hash := sha256.New()
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if _, err := io.Copy(hash, file); err != nil {
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return "", fmt.Errorf("compute checksum: %w", err)
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}
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return hex.EncodeToString(hash.Sum(nil)), nil
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}
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func sanitizeFileName(value string) string {
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builder := strings.Builder{}
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for _, char := range strings.TrimSpace(value) {
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switch {
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case char >= 'a' && char <= 'z':
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builder.WriteRune(char)
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case char >= 'A' && char <= 'Z':
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builder.WriteRune(char + ('a' - 'A'))
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case char >= '0' && char <= '9':
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builder.WriteRune(char)
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case char == '-' || char == '_':
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builder.WriteRune(char)
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case char == ' ' || char == '.':
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builder.WriteRune('_')
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}
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}
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return strings.Trim(builder.String(), "_")
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}
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