Synnefo

    def update_object_hashmap(self, account, container, name, size, hashmap):

        """Create/update an object with the specified size and partial hashes."""

        path, link, tstamp = self._get_containerinfo(account, container)

        try:

            path, link, tstamp, version, s = self._get_objectinfo(account, container, name)

            self._del_path(path, delmeta=False)

            link = self._put_linkinfo(path)

        else:

        sql = 'insert or replace into versions (object_id, version, size) values (?, ?, ?)'

        version_id = self.con.execute(sql, (link, version, size)).lastrowid

    def get_block(self, hash):

        """Return a block's data."""

        c = self.con.execute('select data from blocks where block_id = ?', (hash,))

        row = c.fetchone()

        if row:

    def put_block(self, data):

        """Create a block and return the hash."""

        h = hashlib.new(self.hash_algorithm)

        h.update(data.rstrip('\x00'))

        hash = h.hexdigest()

    def update_block(self, hash, data, offset=0):

        """Update a known block and return the hash."""

        src_data = self.get_block(hash)

        bs = self.block_size

        if offset < 0 or offset > bs or offset + len(data) > bs: