Current File : //lib/python3/dist-packages/duplicity/backends/boxbackend.py
# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4; encoding:utf-8 -*-
#
# Copyright 2020 Jose L. Domingo Lopez <github@24x7linux.com>
#
# This file is part of duplicity.
#
# Duplicity 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 2 of the License, or (at your
# option) any later version.
#
# Duplicity 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 duplicity; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import duplicity.backend
from duplicity.errors import BackendException
class BoxBackend(duplicity.backend.Backend):
def __init__(self, parsed_url):
duplicity.backend.Backend.__init__(self, parsed_url)
from boxsdk import (
Client,
JWTAuth,
)
self._client = self.get_box_client(parsed_url)
self._folder = parsed_url.path[1:] if parsed_url.path[0] == "/" else parsed_url.path
self._file_to_metadata_map = {}
self._folder_id = self.get_id_from_path(self._folder)
if self._folder_id is None:
self._folder_id = self.makedirs(self._folder)
def get_box_client(self, parsed_url):
try:
config_path = os.path.expanduser(parsed_url.query_args["config"][0])
return Client(JWTAuth.from_settings_file(config_path))
except Exception as e:
config_path = os.environ.get("BOX_CONFIG_PATH")
if config_path is not None:
try:
return Client(JWTAuth.from_settings_file(config_path))
except Exception as e:
raise BackendException("box config file is not found.")
raise BackendException("box config file is not specified or not found.")
def _put(self, source_path, remote_filename):
"""Uploads file to the specified remote folder
(tries to delete it first to make sure the new one can be uploaded)"""
try:
self.delete(remote_filename.decode())
except Exception:
pass
self.upload(
local_file=source_path.get_canonical().decode(),
remote_file=remote_filename.decode(),
)
def _get(self, remote_filename, local_path):
"""Downloads file from the specified remote path"""
self.download(
remote_file=remote_filename.decode(),
local_file=local_path.name.decode(),
)
def _list(self):
"""Lists files in the specified remote path"""
return self.folder_contents()
def _delete(self, filename):
"""Deletes file from the specified remote path"""
self.delete(remote_file=filename.decode())
def _query_list(self, filename_list):
"""Query metadata for a list of file"""
return {filename: self._file_to_metadata_map.get(filename.decode(), {"size": -1}) for filename in filename_list}
def get_id_from_path(self, remote_path, parent_id="0"):
"""Get the folder or file id from its path"""
path_items = [x.strip() for x in remote_path.split("/") if x.strip() != ""]
head = path_items[0]
tail = path_items[1:]
while True:
selected_item_id = None
for item in self._client.folder(folder_id=parent_id).get_items():
if item.name == head:
selected_item_id = item.id
break
if selected_item_id is None:
return None
elif len(tail) == 0:
return selected_item_id
parent_id = selected_item_id
head = tail[0]
tail = tail[1:]
return None
def get_file_id_from_filename(self, remote_filename):
"""Get the fild id by its file name"""
file = self._file_to_metadata_map.get(remote_filename)
if file is not None:
return file["id"]
file_id = self.get_id_from_path(remote_filename, parent_id=self._folder_id)
file = self._client.file(file_id).get()
self._file_to_metadata_map[file.name] = {
"id": file.id,
"size": file.size,
}
return file_id
def makedirs(self, remote_path):
"""Create folder(s) in a path if necessary"""
path_items = [x.strip() for x in remote_path.split("/") if x.strip() != ""]
parent_id = "0"
start_folder_id = None
while len(path_items) > 0:
selected_item_id = None
for item in self._client.folder(folder_id=parent_id).get_items():
if item.name == path_items[0]:
selected_item_id = item.id
break
if selected_item_id is None:
start_folder_id = parent_id
break
parent_id = selected_item_id
path_items = path_items[1:]
if start_folder_id is not None:
parent_id = start_folder_id
for item in path_items:
subfolder = self._client.folder(parent_id).create_subfolder(item)
parent_id = subfolder.id
return parent_id
def folder_contents(self):
"""Lists files of a remote box path"""
items = [
x
for x in self._client.folder(folder_id=self._folder_id).get_items(fields=["id", "name", "size"])
if x.type == "file"
]
self._file_to_metadata_map.update({x.name: {"id": x.id, "size": x.size} for x in items})
return [x.name for x in items]
def upload(self, remote_file, local_file):
"""Upload local file to the box folder"""
new_file = self._client.folder(self._folder_id).upload(file_path=local_file, file_name=remote_file)
self._file_to_metadata_map[new_file.name] = {
"id": new_file.id,
"size": new_file.size,
}
def download(self, remote_file, local_file):
"""Download file in box folder"""
file_id = self.get_file_id_from_filename(remote_file)
with open(local_file, "wb") as fp:
self._client.file(file_id).download_to(fp)
def delete(self, remote_file):
"""Delete file in box folder"""
file_id = self.get_file_id_from_filename(remote_file)
self._client.file(file_id).delete()
duplicity.backend.register_backend("box", BoxBackend)
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