117 lines
2.6 KiB
Plaintext
117 lines
2.6 KiB
Plaintext
// core/sync.go
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package lab
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"time"
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)
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// File represents file metadata
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type File struct {
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Name string
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Path string
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Size int64
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Checksum string
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ModTime time.Time
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}
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// Sync compares local and remote files and performs synchronization
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func Sync(localRoot, remoteRoot string) error {
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// 1. Scan local files
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localFiles, err := scanFiles(localRoot)
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if err != nil {
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return fmt.Errorf("error scanning local files: %w", err)
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}
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// 2. Scan remote files (replace with actual server communication)
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remoteFiles, err := scanFiles(remoteRoot)
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if err != nil {
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return fmt.Errorf("error scanning remote files: %w", err)
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}
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// 3. Compare and synchronize
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for _, localFile := range localFiles {
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// Check if file exists remotely
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remoteFile, found := remoteFiles[localFile.Path]
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if !found {
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// Upload file
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err := uploadFile(localFile.Path, remoteRoot)
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if err != nil {
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return fmt.Errorf("error uploading file: %w", err)
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}
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} else {
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// Compare timestamps
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if localFile.ModTime.After(remoteFile.ModTime) {
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// Upload updated file
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err := uploadFile(localFile.Path, remoteRoot)
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if err != nil {
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return fmt.Errorf("error uploading file: %w", err)
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}
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}
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}
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}
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// 4. Delete files that are no longer present locally
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for _, remoteFile := range remoteFiles {
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if _, found := localFiles[remoteFile.Path]; !found {
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// Delete file remotely
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err := deleteFile(remoteFile.Path, remoteRoot)
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if err != nil {
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return fmt.Errorf("error deleting file: %w", err)
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}
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}
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}
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return nil
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}
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// scanFiles recursively scans a directory and returns a map of file metadata
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func scanFiles(root string) (map[string]*File, error) {
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files := make(map[string]*File)
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err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if !info.IsDir() {
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data, err := ioutil.ReadFile(path)
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if err != nil {
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return err
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}
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checksum := calculateChecksum(data)
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files[path] = &File{
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Name: info.Name(),
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Path: path,
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Size: info.Size(),
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Checksum: checksum,
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ModTime: info.ModTime(),
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}
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}
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return nil
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})
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return files, err
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}
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// uploadFile uploads a file to the remote server
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func uploadFile(localPath, remoteRoot string) error {
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// Implement file upload logic
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// ...
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return nil
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}
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// deleteFile deletes a file from the remote server
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func deleteFile(remotePath, remoteRoot string) error {
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// Implement file deletion logic
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// ...
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return nil
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}
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// calculateChecksum calculates the checksum of a file
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func calculateChecksum(data []byte) string {
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// Implement checksum calculation logic
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// ...
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return ""
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}
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