Synnefo » Pithos

# Copyright 2011-2012 GRNET S.A. All rights reserved.

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

from progress.bar import IncrementalBar

def upload(client, path, container, prefix, name=None, mimetype=None):

    meta = client.retrieve_container_metadata(container)

    blocksize = int(meta['x-container-block-size'])

    blockhash = meta['x-container-block-hash']

    size = os.path.getsize(path)

    hashes = HashMap(blocksize, blockhash)

    hashes.load(open(path))

    map = {'bytes': size, 'hashes': [hexlify(x) for x in hashes]}

    objectname = name if name else os.path.split(path)[-1]

    object = prefix + objectname

    v = None

    try:

        v = client.create_object_by_hashmap(container, object, map, **kwargs)

            raise

    else:

        return v

        missing = json.loads(fault.data)

        missing = fault.data

    if '' in missing:

        del missing[missing.index(''):]

    bar = IncrementalBar('Uploading', max=len(missing))

    bar.suffix = '%(percent).1f%% - %(eta)ds'

    with open(path) as fp:

            client.update_container_data(container, StringIO(block))

            bar.next()

    bar.finish()

    return client.create_object_by_hashmap(container, object, map, **kwargs)

def download(client, container, object, path):

    res = client.retrieve_object_hashmap(container, object)

    blocksize = int(res['block_size'])

    blockhash = res['block_hash']

    bytes = res['bytes']

    map = res['hashes']

    if os.path.exists(path):

        h = HashMap(blocksize, blockhash)

        h.load(open(path))

    else:

        open(path, 'w').close()     # Create an empty file

        hashes = []

    with open(path, 'a+') as fp:

        if bytes != 0:

            for i, h in enumerate(map):

                    continue

                start = i * blocksize

                end = '' if i == len(map) - 1 else ((i + 1) * blocksize) - 1

                if i != len(map) - 1:

                    data += (blocksize - len(data)) * '\x00'

                fp.seek(start)