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chore(deps): bumped orjson==3.10.3
chore(deps): bumped orjson==3.10.3

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local_store.py
268 lines | 8.7 KiB | text/x-python | PythonLexer
copyrights: updated for 2023
r5088 # Copyright (C) 2016-2023 RhodeCode GmbH
file-store: small code cleanups.
r4012 #
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# 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 Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
import os
import time
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r4476 import errno
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r4012 import hashlib
from rhodecode.lib.ext_json import json
from rhodecode.apps.file_store import utils
from rhodecode.apps.file_store.extensions import resolve_extensions
from rhodecode.apps.file_store.exceptions import (
FileNotAllowedException, FileOverSizeException)
METADATA_VER = 'v1'
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r4476 def safe_make_dirs(dir_path):
if not os.path.exists(dir_path):
try:
os.makedirs(dir_path)
except OSError as e:
if e.errno != errno.EEXIST:
raise
return
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r4012 class LocalFileStorage(object):
@classmethod
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r4476 def apply_counter(cls, counter, filename):
name_counted = '%d-%s' % (counter, filename)
return name_counted
@classmethod
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r4012 def resolve_name(cls, name, directory):
"""
Resolves a unique name and the correct path. If a filename
for that path already exists then a numeric prefix with values > 0 will be
added, for example test.jpg -> 1-test.jpg etc. initially file would have 0 prefix.
:param name: base name of file
:param directory: absolute directory path
"""
counter = 0
while True:
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r4476 name_counted = cls.apply_counter(counter, name)
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r4012
# sub_store prefix to optimize disk usage, e.g some_path/ab/final_file
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r4476 sub_store = cls._sub_store_from_filename(name_counted)
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r4012 sub_store_path = os.path.join(directory, sub_store)
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r4476 safe_make_dirs(sub_store_path)
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r4012
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r4476 path = os.path.join(sub_store_path, name_counted)
file-store: small code cleanups.
r4012 if not os.path.exists(path):
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r4476 return name_counted, path
file-store: small code cleanups.
r4012 counter += 1
@classmethod
def _sub_store_from_filename(cls, filename):
return filename[:2]
@classmethod
def calculate_path_hash(cls, file_path):
"""
Efficient calculation of file_path sha256 sum
:param file_path:
:return: sha256sum
"""
digest = hashlib.sha256()
with open(file_path, 'rb') as f:
for chunk in iter(lambda: f.read(1024 * 100), b""):
digest.update(chunk)
return digest.hexdigest()
def __init__(self, base_path, extension_groups=None):
"""
Local file storage
:param base_path: the absolute base path where uploads are stored
:param extension_groups: extensions string
"""
extension_groups = extension_groups or ['any']
self.base_path = base_path
self.extensions = resolve_extensions([], groups=extension_groups)
def __repr__(self):
modernize: updates for python3
r5095 return f'{self.__class__}@{self.base_path}'
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r4012
def store_path(self, filename):
"""
Returns absolute file path of the filename, joined to the
base_path.
:param filename: base name of file
"""
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r4476 prefix_dir = ''
if '/' in filename:
prefix_dir, filename = filename.split('/')
sub_store = self._sub_store_from_filename(filename)
else:
sub_store = self._sub_store_from_filename(filename)
return os.path.join(self.base_path, prefix_dir, sub_store, filename)
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r4012
def delete(self, filename):
"""
Deletes the filename. Filename is resolved with the
absolute path based on base_path. If file does not exist,
returns **False**, otherwise **True**
:param filename: base name of file
"""
if self.exists(filename):
os.remove(self.store_path(filename))
return True
return False
def exists(self, filename):
"""
Checks if file exists. Resolves filename's absolute
path based on base_path.
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r4476 :param filename: file_uid name of file, e.g 0-f62b2b2d-9708-4079-a071-ec3f958448d4.svg
file-store: small code cleanups.
r4012 """
return os.path.exists(self.store_path(filename))
def filename_allowed(self, filename, extensions=None):
"""Checks if a filename has an allowed extension
:param filename: base name of file
:param extensions: iterable of extensions (or self.extensions)
"""
_, ext = os.path.splitext(filename)
return self.extension_allowed(ext, extensions)
def extension_allowed(self, ext, extensions=None):
"""
Checks if an extension is permitted. Both e.g. ".jpg" and
"jpg" can be passed in. Extension lookup is case-insensitive.
:param ext: extension to check
:param extensions: iterable of extensions to validate against (or self.extensions)
"""
def normalize_ext(_ext):
if _ext.startswith('.'):
_ext = _ext[1:]
return _ext.lower()
extensions = extensions or self.extensions
if not extensions:
return True
ext = normalize_ext(ext)
return ext in [normalize_ext(x) for x in extensions]
def save_file(self, file_obj, filename, directory=None, extensions=None,
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r4476 extra_metadata=None, max_filesize=None, randomized_name=True, **kwargs):
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r4012 """
Saves a file object to the uploads location.
Returns the resolved filename, i.e. the directory +
the (randomized/incremented) base name.
:param file_obj: **cgi.FieldStorage** object (or similar)
:param filename: original filename
:param directory: relative path of sub-directory
:param extensions: iterable of allowed extensions, if not default
:param max_filesize: maximum size of file that should be allowed
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r4476 :param randomized_name: generate random generated UID or fixed based on the filename
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r4012 :param extra_metadata: extra JSON metadata to store next to the file with .meta suffix
"""
extensions = extensions or self.extensions
if not self.filename_allowed(filename, extensions):
raise FileNotAllowedException()
if directory:
dest_directory = os.path.join(self.base_path, directory)
else:
dest_directory = self.base_path
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r4476 safe_make_dirs(dest_directory)
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r4012
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r4476 uid_filename = utils.uid_filename(filename, randomized=randomized_name)
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r4012
# resolve also produces special sub-dir for file optimized store
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r4476 filename, path = self.resolve_name(uid_filename, dest_directory)
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r4012 stored_file_dir = os.path.dirname(path)
file-store: changed for stream upload endpoint.
r4611 no_body_seek = kwargs.pop('no_body_seek', False)
if no_body_seek:
pass
else:
file_obj.seek(0)
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r4012
with open(path, "wb") as dest:
file-store: changed for stream upload endpoint.
r4611 length = 256 * 1024
while 1:
buf = file_obj.read(length)
if not buf:
break
dest.write(buf)
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r4012
metadata = {}
if extra_metadata:
metadata = extra_metadata
size = os.stat(path).st_size
if max_filesize and size > max_filesize:
# free up the copied file, and raise exc
os.remove(path)
raise FileOverSizeException()
file_hash = self.calculate_path_hash(path)
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r4476 metadata.update({
"filename": filename,
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r4012 "size": size,
"time": time.time(),
"sha256": file_hash,
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r4476 "meta_ver": METADATA_VER
})
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r4012
filename_meta = filename + '.meta'
with open(os.path.join(stored_file_dir, filename_meta), "wb") as dest_meta:
dest_meta.write(json.dumps(metadata))
if directory:
filename = os.path.join(directory, filename)
return filename, metadata
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r4661 def get_metadata(self, filename, ignore_missing=False):
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r4012 """
Reads JSON stored metadata for a file
:param filename:
:return:
"""
filename = self.store_path(filename)
filename_meta = filename + '.meta'
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r4661 if ignore_missing and not os.path.isfile(filename_meta):
return {}
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r4012 with open(filename_meta, "rb") as source_meta:
return json.loads(source_meta.read())