本文整理汇总了Python中cms.db.SQLAlchemyAll.FSObject.get_lobject方法的典型用法代码示例。如果您正苦于以下问题：Python FSObject.get_lobject方法的具体用法？Python FSObject.get_lobject怎么用？Python FSObject.get_lobject使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cms.db.SQLAlchemyAll.FSObject的用法示例。
在下文中一共展示了FSObject.get_lobject方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: put_file
# 需要导入模块: from cms.db.SQLAlchemyAll import FSObject [as 别名]
# 或者: from cms.db.SQLAlchemyAll.FSObject import get_lobject [as 别名]
def put_file(self, digest, origin, description=""):
"""See FileCacherBackend.put_file().
"""
with SessionGen() as session:
# Check digest uniqueness
if FSObject.get_from_digest(digest, session) is not None:
logger.debug("File %s already on database, "
"dropping this one." % digest)
session.rollback()
# If it is not already present, copy the file into the
# lobject
else:
fso = FSObject(description=description)
logger.debug("Sending file %s to the database." % digest)
with open(origin, 'rb') as temp_file:
with fso.get_lobject(session, mode='wb') as lobject:
logger.debug("Large object created.")
buf = temp_file.read(self.CHUNK_SIZE)
while buf != '':
while len(buf) > 0:
written = lobject.write(buf)
buf = buf[written:]
if self.service is not None:
self.service._step()
buf = temp_file.read(self.CHUNK_SIZE)
fso.digest = digest
session.add(fso)
session.commit()
logger.debug("File %s sent to the database." % digest)示例2: put_file
# 需要导入模块: from cms.db.SQLAlchemyAll import FSObject [as 别名]
# 或者: from cms.db.SQLAlchemyAll.FSObject import get_lobject [as 别名]
def put_file(self, digest, origin, description=""):
"""See FileCacherBackend.put_file().
"""
try:
with SessionGen() as session:
# Check digest uniqueness
if FSObject.get_from_digest(digest, session) is not None:
logger.debug("File %s already on database, "
"dropping this one." % digest)
session.rollback()
# If it is not already present, copy the file into the
# lobject
else:
fso = FSObject(description=description)
logger.debug("Sending file %s to the database." % digest)
with open(origin, 'rb') as temp_file:
with fso.get_lobject(session, mode='wb') \
as lobject:
logger.debug("Large object created.")
buf = temp_file.read(self.CHUNK_SIZE)
while buf != '':
while len(buf) > 0:
written = lobject.write(buf)
buf = buf[written:]
# Cooperative yield
gevent.sleep(0)
buf = temp_file.read(self.CHUNK_SIZE)
fso.digest = digest
session.add(fso)
session.commit()
logger.debug("File %s sent to the database." % digest)
except IntegrityError:
logger.warning("File %s caused an IntegrityError, ignoring..."
% digest)示例3: put_file
# 需要导入模块: from cms.db.SQLAlchemyAll import FSObject [as 别名]
# 或者: from cms.db.SQLAlchemyAll.FSObject import get_lobject [as 别名]
def put_file(self, description="", binary_data=None,
file_obj=None, path=None):
"""Put a file in the storage, and keep a copy locally. The
caller has to provide exactly one among binary_data, file_obj
and path.
description (string): a human-readable description of the
content.
binary_data (string): the content of the file to send.
file_obj (file): the file-like object to send.
path (string): the file to send.
"""
temp_fd, temp_path = tempfile.mkstemp(dir=self.tmp_dir)
os.close(temp_fd)
# Input checking
if [binary_data, file_obj, path].count(None) != 2:
error_string = "No content (or too many) specified in put_file."
logger.error(error_string)
raise ValueError(error_string)
logger.debug("Reading input file to store on the database.")
# Copy the file content, whatever forms it arrives, into the
# temporary file
# TODO - This could be long lasting: probably it would be wise
# to call self.service._step() periodically, but this would
# require reimplementing of shutil functions
if path is not None:
shutil.copy(path, temp_path)
elif binary_data is not None:
with open(temp_path, 'wb') as temp_file:
temp_file.write(binary_data)
else: # file_obj is not None.
with open(temp_path, 'wb') as temp_file:
shutil.copyfileobj(file_obj, temp_file)
hasher = hashlib.sha1()
fso = FSObject(description=description)
# Calculate the file SHA1 digest
with open(temp_path, 'rb') as temp_file:
buf = temp_file.read(self.CHUNK_SIZE)
while buf != '':
hasher.update(buf)
buf = temp_file.read(self.CHUNK_SIZE)
digest = hasher.hexdigest()
logger.debug("File has digest %s." % digest)
# Check the digest uniqueness
with SessionGen() as session:
if FSObject.get_from_digest(digest, session) is not None:
logger.debug("File %s already on database, "
"dropping this one." % digest)
session.rollback()
# If it is not already present, copy the file into the
# lobject
else:
logger.debug("Sending file %s to the database." % digest)
with open(temp_path, 'rb') as temp_file:
with fso.get_lobject(session, mode='wb') as lobject:
logger.debug("Large object created.")
buf = temp_file.read(self.CHUNK_SIZE)
while buf != '':
while len(buf) > 0:
written = lobject.write(buf)
buf = buf[written:]
if self.service is not None:
self.service._step()
buf = temp_file.read(self.CHUNK_SIZE)
fso.digest = digest
session.add(fso)
session.commit()
logger.debug("File %s sent to the database." % digest)
# Move the temporary file in the cache
shutil.move(temp_path,
os.path.join(self.obj_dir, digest))
return digest