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# Copyright (C) 2014 Aleksey Lim
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from sugar_network import toolkit
from sugar_network.toolkit import http, enforce
class Digest(str):
pass
def post(content, meta=None):
# if fileobj is tmp then move files
pass
def update(digest, meta):
pass
def get(digest):
pass
def delete(digest):
pass
def path(digest):
pass
"""
def diff(volume, in_seq, out_seq=None, exclude_seq=None, layer=None,
fetch_blobs=False, ignore_documents=None, **kwargs):
if 'blob' in meta:
blob_path = meta.pop('blob')
yield {'guid': guid,
'diff': {prop: meta},
'blob_size': meta['blob_size'],
'blob': toolkit.iter_file(blob_path),
}
elif fetch_blobs and 'url' in meta:
url = meta.pop('url')
try:
blob = connection.request('GET', url,
allow_redirects=True,
# We need uncompressed size
headers={'Accept-Encoding': ''})
except Exception:
_logger.exception('Cannot fetch %r for %s:%s:%s',
url, resource, guid, prop)
is_the_only_seq = False
continue
yield {'guid': guid,
'diff': {prop: meta},
'blob_size':
int(blob.headers['Content-Length']),
'blob': blob.iter_content(toolkit.BUFFER_SIZE),
}
else:
'digest': hashlib.sha1(png.getvalue()).hexdigest(),
if value is None:
value = {'blob': None}
elif isinstance(value, basestring) or hasattr(value, 'read'):
value = _read_blob(request, prop, value)
blobs.append(value['blob'])
elif isinstance(value, dict):
enforce('url' in value or 'blob' in value, 'No bundle')
else:
raise RuntimeError('Incorrect BLOB value')
def _read_blob(request, prop, value):
digest = hashlib.sha1()
dst = toolkit.NamedTemporaryFile(delete=False)
try:
if isinstance(value, basestring):
digest.update(value)
dst.write(value)
else:
size = request.content_length or sys.maxint
while size > 0:
chunk = value.read(min(size, toolkit.BUFFER_SIZE))
if not chunk:
break
dst.write(chunk)
size -= len(chunk)
digest.update(chunk)
except Exception:
os.unlink(dst.name)
raise
finally:
dst.close()
if request.prop and request.content_type:
mime_type = request.content_type
else:
mime_type = prop.mime_type
return {'blob': dst.name,
'digest': digest.hexdigest(),
'mime_type': mime_type,
}
)
"""
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