Ejemplo n.º 1
0
func (sync *Unidirectional) syncDir(entry storage.DirectoryEntry) error {
	path := entry.Path()

	var (
		targetEntry    storage.Entry
		targetDirEntry storage.DirectoryEntry
		targetDir      storage.Directory
		err            error
		ok             bool
	)

	targetEntry, err = sync.to.Stat(path)

	if err != nil {
		return err
	}

	if targetDirEntry, ok = targetEntry.(storage.DirectoryEntry); !ok && targetEntry != nil {
		if err := targetEntry.Remove(); err != nil {
			return err
		}

		targetDirEntry = nil
	}

	if targetDirEntry != nil {
		return nil
	}

	sync.events <- &EventStartSyncing{entry: entry}

	targetDir, err = sync.to.Mkdir(path)

	if err != nil {
		return err
	}

	defer func() {
		sync.setLastErrorIfApplicable(targetDir.Close())
	}()

	return nil
}
Ejemplo n.º 2
0
func (sync *Unidirectional) syncFile(dirEntry storage.DirectoryEntry, entry storage.FileEntry) error {
	path := entry.Path()
	mustSync := false
	targetEntry, err := sync.to.Stat(path)

	if err != nil {
		return err
	}

	if targetEntry == nil {
		mustSync = true
	} else if _, ok := targetEntry.(storage.FileEntry); !ok {
		mustSync = true
	} else if targetEntry.Mtime().Before(entry.Mtime()) {
		mustSync = true
	}

	if !mustSync {
		return nil
	}

	sync.events <- &EventStartSyncing{entry: entry}

	targetDirEntry, err := sync.to.Stat(dirEntry.Path())

	if err != nil {
		return err
	}

	targetDir, err := targetDirEntry.(storage.DirectoryEntry).Open()

	if err != nil {
		return err
	}

	defer func() {
		_ = targetDir.Close()
	}()

	tempFile, err := targetDir.CreateFile(sync.tempFileNameFor(entry))

	if err != nil {
		return err
	}

	defer func() {
		entry, err := sync.to.Stat(tempFile.Entry().Path())

		if err != nil {
			sync.setLastErrorIfApplicable(err)
			return
		}

		if entry != nil {
			sync.setLastErrorIfApplicable(tempFile.Close())
			sync.setLastErrorIfApplicable(tempFile.Entry().Remove())
		}
	}()

	soureFile, err := entry.Open()

	if err != nil {
		return err
	}

	defer func() {
		sync.setLastErrorIfApplicable(soureFile.Close())
	}()

	if _, err := io.Copy(tempFile, soureFile); err != nil {
		return err
	}

	if err := tempFile.Close(); err != nil {
		return err
	}

	if err := soureFile.Close(); err != nil {
		return err
	}

	if err := tempFile.Entry().SetMtime(entry.Mtime()); err != nil {
		return err
	}

	if targetEntry != nil {
		if err := targetEntry.Remove(); err != nil {
			return err
		}
	}

	if _, err := tempFile.Entry().Rename(entry.Name()); err != nil {
		return err
	}

	return nil
}