def fromItem(cls, item):
"""
Convert an SDB item to an instance of this class.
:type item: Item
"""
assert item is not None
# Strings come back from SDB as unicode
def strOrNone(s):
return s if s is None else str(s)
# ownerID and encrypted are the only mandatory attributes
ownerID = strOrNone(item.get('ownerID'))
encrypted = item.get('encrypted')
if ownerID is None:
assert encrypted is None
return None
else:
version = strOrNone(item['version'])
encrypted = strict_bool(encrypted)
content, numContentChunks = cls.attributesToBinary(item)
if encrypted:
sseKeyPath = cls.outer.sseKeyPath
if sseKeyPath is None:
raise AssertionError('Content is encrypted but no key was provided.')
if content is not None:
content = encryption.decrypt(content, sseKeyPath)
self = cls(fileID=item.name, ownerID=ownerID, encrypted=encrypted, version=version,
content=content, numContentChunks=numContentChunks)
return self
def fromItem(cls, item):
"""
Convert an SDB item to an instance of this class.
:type item: Item
"""
assert item is not None
# Strings come back from SDB as unicode
def strOrNone(s):
return s if s is None else str(s)
# ownerID and encrypted are the only mandatory attributes
ownerID = strOrNone(item.get('ownerID'))
encrypted = item.get('encrypted')
if ownerID is None:
assert encrypted is None
return None
else:
version = strOrNone(item['version'])
encrypted = strict_bool(encrypted)
content, numContentChunks = cls.attributesToBinary(item)
if encrypted:
sseKeyPath = cls.outer.sseKeyPath
if sseKeyPath is None:
raise AssertionError('Content is encrypted but no key was provided.')
if content is not None:
content = encryption.decrypt(content, sseKeyPath)
self = cls(fileID=item.name, ownerID=ownerID, encrypted=encrypted, version=version,
content=content, numContentChunks=numContentChunks)
return self
def writeTo(self, writable):
chunkStart = 0
fileSize = int(blobProps['Content-Length'])
while chunkStart < fileSize:
chunkEnd = chunkStart + outer_self._maxAzureBlockBytes - 1
buf = container.get_blob(blob_name=bytes(jobStoreFileID),
x_ms_range="bytes=%d-%d" % (chunkStart, chunkEnd))
if encrypted:
buf = encryption.decrypt(buf, outer_self.keyPath)
writable.write(buf)
chunkStart = chunkEnd + 1
def writeTo(self, writable):
chunkStart = 0
fileSize = int(blobProps['Content-Length'])
while chunkStart < fileSize:
chunkEnd = chunkStart + outer_self._maxAzureBlockBytes - 1
buf = container.get_blob(blob_name=jobStoreFileID,
x_ms_range="bytes=%d-%d" % (chunkStart, chunkEnd))
if encrypted:
buf = encryption.decrypt(buf, outer_self.keyPath)
writable.write(buf)
chunkStart = chunkEnd + 1
def writeTo(self, writable):
chunkStart = 0
fileSize = blob.properties.content_length
while chunkStart < fileSize:
chunkEnd = chunkStart + outer_self._maxAzureBlockBytes - 1
buf = container.get_blob_to_bytes(blob_name=str(jobStoreFileID),
start_range=chunkStart,
end_range=chunkEnd).content
if encrypted:
buf = encryption.decrypt(buf, outer_self.keyPath)
writable.write(buf)
chunkStart = chunkEnd + 1
def writer():
try:
chunkStartPos = 0
fileSize = int(blobProps['Content-Length'])
while chunkStartPos < fileSize:
chunkEndPos = chunkStartPos + self._maxAzureBlockBytes - 1
buf = container.get_blob(blob_name=jobStoreFileID,
x_ms_range="bytes=%d-%d" % (chunkStartPos,
chunkEndPos))
if encrypted:
buf = encryption.decrypt(buf, self.keyPath)
writable.write(buf)
chunkStartPos = chunkEndPos + 1
finally:
# Ensure readers aren't left blocking if this thread crashes.
# This close() will send EOF to the reading end and ultimately cause the
# yield to return. It also makes the implict .close() done by the enclosing
# "with" context redundant but that should be ok since .close() on file
# objects are idempotent.
writable.close()
def writer():
try:
chunkStartPos = 0
fileSize = int(blobProps['Content-Length'])
while chunkStartPos < fileSize:
chunkEndPos = chunkStartPos + self._maxAzureBlockBytes - 1
buf = container.get_blob(
blob_name=jobStoreFileID,
x_ms_range="bytes=%d-%d" %
(chunkStartPos, chunkEndPos))
if encrypted:
buf = encryption.decrypt(buf, self.keyPath)
writable.write(buf)
chunkStartPos = chunkEndPos + 1
finally:
# Ensure readers aren't left blocking if this thread crashes.
# This close() will send EOF to the reading end and ultimately cause the
# yield to return. It also makes the implict .close() done by the enclosing
# "with" context redundant but that should be ok since .close() on file
# objects are idempotent.
writable.close()