def __init__(self, option=settings.AZURE_FILES):
"""Constructor.
Constructs object using dictionary either specified in contucotr or in settings.AZURE_FILES.
@param option dictionary with 'account_name', 'key', 'container_name', 'base_url' keys.
option['account_name']
Azure account to work with
option['key']
Secret authentication key for the azure storage account
option['container_name']
Container in which to store the files
option['base_url']
Url prefix used with filenames. Should be mapped to the view, that returns an image as result.
"""
if not option or not (option.has_key('account_name') and option.has_key('key') and option.has_key('container_name') and option.has_key('base_url') ):
raise ValueError("You didn't specify required options")
for key in self.CONFIG_KEYS:
setattr(self, key, option.get(key, False))
# create storage connection
self.connection = pyazure.PyAzure(self.account_name, self.key)
self.access_signature = BlobSharedAccessSignature(self.account_name, self.key)
# create container if neccessary
for cont in self.connection.blobs.list_containers():
if cont[0] == self.container_name:
return
self.connection.blobs.create_container(self.container_name, not self.is_private)
def __init__(self, option=settings.AZURE_FILES):
"""Constructor.
Constructs object using dictionary either specified in contucotr or in settings.AZURE_FILES.
@param option dictionary with 'account_name', 'key', 'container_name', 'base_url' keys.
option['account_name']
Azure account to work with
option['key']
Secret authentication key for the azure storage account
option['container_name']
Container in which to store the files
option['base_url']
Url prefix used with filenames. Should be mapped to the view, that returns an image as result.
"""
if not option or not (option.has_key('account_name') and option.has_key('key') and option.has_key('container_name') and option.has_key('base_url') ):
raise ValueError("You didn't specify required options")
for key in self.CONFIG_KEYS:
setattr(self, key, option.get(key, False))
# create storage connection
self.connection = pyazure.PyAzure(self.account_name, self.key)
self.access_signature = BlobSharedAccessSignature(self.account_name, self.key)
# create container if neccessary
for cont in self.connection.blobs.list_containers():
if cont[0] == self.container_name:
return
self.connection.blobs.create_container(self.container_name, not self.is_private)
class AzureBlockStorage(Storage):
"""
Class AzureBlockStorage provides storing files in Microsoft Azure Blob Storage.
"""
CONFIG_KEYS = ['account_name', 'key', 'container_name', 'base_url', 'is_private']
def __init__(self, option=settings.AZURE_FILES):
"""Constructor.
Constructs object using dictionary either specified in contucotr or in settings.AZURE_FILES.
@param option dictionary with 'account_name', 'key', 'container_name', 'base_url' keys.
option['account_name']
Azure account to work with
option['key']
Secret authentication key for the azure storage account
option['container_name']
Container in which to store the files
option['base_url']
Url prefix used with filenames. Should be mapped to the view, that returns an image as result.
"""
if not option or not (option.has_key('account_name') and option.has_key('key') and option.has_key('container_name') and option.has_key('base_url') ):
raise ValueError("You didn't specify required options")
for key in self.CONFIG_KEYS:
setattr(self, key, option.get(key, False))
# create storage connection
self.connection = pyazure.PyAzure(self.account_name, self.key)
self.access_signature = BlobSharedAccessSignature(self.account_name, self.key)
# create container if neccessary
for cont in self.connection.blobs.list_containers():
if cont[0] == self.container_name:
return
self.connection.blobs.create_container(self.container_name, not self.is_private)
def _open(self, name, mode='rb'):
"""Open a file from database.
@param name filename or relative path to file based on base_url. path should contain only "/", but not "\". Apache sends pathes with "/".
If there is no such file in the db, returs None
"""
if not self.exists(name):
return None
try:
inMemFile = StringIO.StringIO(self.connection.blobs.get_blob(self.container_name, name))
inMemFile.name = name
inMemFile.mode = mode
return File(inMemFile)
except:
return None
def _save(self, name, content):
"""Save 'content' as file named 'name'.
"""
if hasattr(content, 'chunks'):
content_str = ''.join(chunk for chunk in content.chunks())
else:
content_str = content.read()
self.connection.blobs.put_blob(self.container_name, str(name), content_str,
mimetypes.guess_type(name)[0])
return name
def exists(self, name):
for blob in self.connection.blobs.list_blobs(self.container_name):
if blob[0] == name:
return True
return False
def get_available_name(self, name):
return super(AzureBlockStorage, self).get_available_name(name.replace('\\', '/'))
def delete(self, name):
if self.exists(name):
self.connection.blobs.delete_blob(self.container_name, name)
def url(self, name):
if self.base_url is None:
raise ValueError("This file is not accessible via a URL.")
url = urlparse.urljoin(self.base_url, name).replace('\\', '/')
if self.is_private:
url += '?' + self.access_signature.create_signed_qs(self.container_name, name)
return url
def size(self, name):
for blob in self.connection.blobs.list_blobs(self.container_name):
if blob[0] == name:
return blob[3]
return 0
class AzureBlockStorage(Storage):
"""
Class AzureBlockStorage provides storing files in Microsoft Azure Blob Storage.
"""
CONFIG_KEYS = ['account_name', 'key', 'container_name', 'base_url', 'is_private']
def __init__(self, option=settings.AZURE_FILES):
"""Constructor.
Constructs object using dictionary either specified in contucotr or in settings.AZURE_FILES.
@param option dictionary with 'account_name', 'key', 'container_name', 'base_url' keys.
option['account_name']
Azure account to work with
option['key']
Secret authentication key for the azure storage account
option['container_name']
Container in which to store the files
option['base_url']
Url prefix used with filenames. Should be mapped to the view, that returns an image as result.
"""
if not option or not (option.has_key('account_name') and option.has_key('key') and option.has_key('container_name') and option.has_key('base_url') ):
raise ValueError("You didn't specify required options")
for key in self.CONFIG_KEYS:
setattr(self, key, option.get(key, False))
# create storage connection
self.connection = pyazure.PyAzure(self.account_name, self.key)
self.access_signature = BlobSharedAccessSignature(self.account_name, self.key)
# create container if neccessary
for cont in self.connection.blobs.list_containers():
if cont[0] == self.container_name:
return
self.connection.blobs.create_container(self.container_name, not self.is_private)
def _open(self, name, mode='rb'):
"""Open a file from database.
@param name filename or relative path to file based on base_url. path should contain only "/", but not "\". Apache sends pathes with "/".
If there is no such file in the db, returs None
"""
if not self.exists(name):
return None
try:
inMemFile = StringIO.StringIO(self.connection.blobs.get_blob(self.container_name, name))
inMemFile.name = name
inMemFile.mode = mode
return File(inMemFile)
except:
return None
def _save(self, name, content):
"""Save 'content' as file named 'name'.
"""
if hasattr(content, 'chunks'):
content_str = ''.join(chunk for chunk in content.chunks())
else:
content_str = content.read()
self.connection.blobs.put_blob(self.container_name, str(name), content_str,
mimetypes.guess_type(name)[0])
return name
def _get_prefix(self, name):
prefix = ''
if '/' in name:
prefix = name.rsplit('/', 1)[0]
return prefix
def exists(self, name):
for blob in self.connection.blobs.list_blobs(
self.container_name, prefix=self._get_prefix(name)):
if blob[0] == name:
return True
return False
def get_available_name(self, name):
return super(AzureBlockStorage, self).get_available_name(name.replace('\\', '/'))
def delete(self, name):
if self.exists(name):
self.connection.blobs.delete_blob(self.container_name, name)
def url(self, name):
if self.base_url is None:
raise ValueError("This file is not accessible via a URL.")
url = urlparse.urljoin(self.base_url, name).replace('\\', '/')
if self.is_private:
url += '?' + self.access_signature.create_signed_qs(self.container_name, name)
return url
def size(self, name):
for blob in self.connection.blobs.list_blobs(
self.container_name, prefix=self._get_prefix(name)):
if blob[0] == name:
return blob[3]
return 0
