Пример #1
0
func main() {
	flag.Parse()
	if len(flag.Args()) != 2 {
		log.Fatal("Usage:\n  fuse mountpoint backup-folder")
	}
	var blobStorage blob.BlobStorage
	var objectStorage object.ObjectStorage
	var err error
	storageFile := flag.Arg(1) + "/.objects"
	if blobStorage, err = blob.NewFileBasedBlobStorage(storageFile); err != nil {
		log.Fatalf("Error loading object database. Are you running from the correct directory? (%s)\n", storageFile)
	}
	objectStorage = object.NewJSONStorage(blobStorage)
	backupFs := &BackupFs{blobStorage: blobStorage, objectStorage: objectStorage}
	backupFs.init("HEAD")
	nfs := fuse.NewPathNodeFs(backupFs, nil)
	state, _, err := fuse.MountNodeFileSystem(flag.Arg(0), nfs, nil)
	if err != nil {
		log.Fatal("Mount fail: %v\n", err)
	}
	state.Loop()
}
Пример #2
0
func Main() {
	var blobStorage blob.BlobStorage
	var objectStorage object.ObjectStorage
	var err error
	switch os.Args[1] {
	case "init":
		fmt.Print("Creating a new object database...\n")
		blobStorage, _ := blob.NewFileBasedBlobStorage(".objects")
		blobStorage.PutWithId("source", []byte(os.Args[2]))
		blobStorage.PutWithId("HEAD", []byte(""))
		fmt.Printf("Saving source directory: %s\n", os.Args[2])
	case "backup":
		var backupDir, previous []byte
		var objRef string
		if blobStorage, err = blob.NewFileBasedBlobStorage(".objects"); err != nil {
			fmt.Print("Error loading object database. Are you running %s from the correct directory?\n")
			os.Exit(-1)
		}
		objectStorage = object.NewJSONStorage(blobStorage)
		if backupDir, err = blobStorage.Get("source"); err != nil {
			fmt.Printf("Error loading source information. %s\n", err.Error())
			os.Exit(-1)
		}
		if previous, err = blobStorage.Get("HEAD"); err != nil {
			fmt.Print("Error loading HEAD information.\n")
			os.Exit(-1)
		}
		fmt.Printf("Starting backup of %s\n", string(backupDir))
		if objRef, err = CreateBackup(os.Args[2], string(previous), string(backupDir), blobStorage, objectStorage); err != nil {
			fmt.Printf("Error creating backup: %s.\n", err.Error())
			os.Exit(-1)
		}
		blobStorage.PutWithId("HEAD", []byte(objRef))
		fmt.Printf("Backup completed. Backup %s\n", objRef)
	case "log":
		if blobStorage, err = blob.NewFileBasedBlobStorage(".objects"); err != nil {
			fmt.Print("Error loading object database. Are you running %s from the correct directory?\n")
			os.Exit(-1)
		}
		objectStorage = object.NewJSONStorage(blobStorage)
		var head []byte
		var history []Backup
		if head, err = blobStorage.Get("HEAD"); err != nil {
			fmt.Print("Error loading HEAD information.\n")
			os.Exit(-1)
		}
		if history, err = GetBackupHistory(string(head), objectStorage); err != nil {
			fmt.Printf("Error loading backup log. %s\n", err.Error())
			os.Exit(-1)
		}
		for _, v := range history {
			fmt.Printf("Name: %s\nId: %s\nDate: %s\n\n", v.Name, v.Current, time.Unix(v.Date, 0))
		}
	case "migrate":
		if blobStorage, err = blob.NewFileBasedBlobStorage(".objects"); err != nil {
			fmt.Print("Error loading object database. Are you running %s from the correct directory?\n")
			os.Exit(-1)
		}
		objectStorage = object.NewJSONStorage(blobStorage)
		if err = ReconstructTree(os.Args[2], os.Args[3], blobStorage, objectStorage); err != nil {
			fmt.Printf("Error migrating to version %s", os.Args[2])
			os.Exit(-1)
		}
		fmt.Print("Migration completed\n")
	}
}