Source code for duplicity.backends.acdclibackend
# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
#
# Copyright 2015 Stefan Breunig <stefan-duplicity@breunig.xyz>
# Copyright 2015 Malay Shah <malays@gmail.com>
# Based on the backend ncftpbackend.py
#
# 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.path
import urllib
import string
import json
import duplicity.backend
from duplicity import globals
from duplicity import log
from duplicity.errors import * # @UnusedWildImport
from duplicity import tempdir
[docs]class ACDBackend(duplicity.backend.Backend):
acd_cmd = 'acd_cli'
"""Connect to remote store using acd_cli"""
def __init__(self, parsed_url):
duplicity.backend.Backend.__init__(self, parsed_url)
# we expect an error return, so go low-level and ignore it
try:
p = os.popen(self.acd_cmd + " version")
fout = p.read()
ret = p.close()
except Exception:
pass
# the expected error is 0
if ret is not None:
log.FatalError(self.acd_cmd + " not found: Please install acd_cli",
log.ErrorCode.backend_not_found)
self.parsed_url = parsed_url
self.url_string = duplicity.backend.strip_auth_from_url(self.parsed_url)
# Use an explicit directory name.
if self.url_string[-1] != '/':
self.url_string += '/'
self.subprocess_popen(self.acd_cmd + " sync")
# Initialize remote directory
remote_path = urllib.unquote(self.parsed_url.path.replace('///', '/')).rstrip()
commandline = self.acd_cmd + " ls '%s'" % (remote_path)
try:
self.subprocess_popen(commandline)
except BackendException as e:
if e.code == 50: # Remote directory not there, create a new one
commandline = self.acd_cmd + " mkdir '%s'" % remote_path
self.subprocess_popen(commandline)
def _put(self, source_path, remote_filename=None):
"""Transfer source_path to remote_filename"""
if not remote_filename:
remote_filename = source_path.get_filename()
# WORKAROUND for acd_cli: cannot specify remote filename
# Link tmp file to the desired remote filename locally and upload
remote_path = urllib.unquote(self.parsed_url.path.replace('///', '/'))
local_real_duplicity_file = os.path.join(os.path.dirname(source_path.name), remote_filename.rstrip())
deleteFile = False
if(source_path.name != local_real_duplicity_file):
try:
os.symlink(source_path.name, local_real_duplicity_file)
deleteFile = True
except IOError as e:
log.FatalError("Unable to copy " + source_path.name + " to " + local_real_duplicity_file)
commandline = self.acd_cmd + " upload --force --overwrite '%s' '%s'" % \
(local_real_duplicity_file, remote_path)
try:
l = self.subprocess_popen(commandline)
finally:
if (deleteFile):
try:
os.remove(local_real_duplicity_file)
except OSError as e:
log.FatalError("Unable to remove file %s" % e)
def _get(self, remote_filename, local_path):
"""Get remote filename, saving it to local_path"""
remote_path = os.path.join(urllib.unquote(self.parsed_url.path.replace('///', '/')), remote_filename).rstrip()
local_dir = os.path.dirname(local_path.name)
local_filename = os.path.basename(local_path.name)
commandline = self.acd_cmd + " download '%s' '%s'" % \
(remote_path, local_dir)
l = self.subprocess_popen(commandline)
# Keep the remote filename and move the file over
try:
os.rename(os.path.join(local_dir, remote_filename), local_path.name)
except IOError as e:
log.FatalError("Unable to move file %s" % e)
local_path.setdata()
if not local_path.exists():
raise BackendException("File %s not found" % local_path.name)
def _query(self, remote_filename):
remote_path = os.path.join(urllib.unquote(self.parsed_url.path.replace('///', '/')), remote_filename).rstrip()
commandline = self.acd_cmd + " metadata '%s'" % remote_path
node = self.subprocess_popen(commandline)
if (node[0] == 0 and node[1]):
try:
size = json.loads(node[1])['contentProperties']['size']
return {'size': size}
except ValueError as e:
raise BackendException('Malformed JSON: expected "contentProperties->size" member in %s' % node[1])
return {'size': -1}
def _list(self):
"""List files in directory"""
def dir_split(str):
if (str):
return str.split()[2]
else:
return None
commandline = self.acd_cmd + " ls '%s'" % self.parsed_url.path.replace('///', '/')
l = self.subprocess_popen(commandline)
return [x for x in map(dir_split, l[1].split('\n')) if x]
def _delete(self, remote_filename):
"""Delete remote_filename"""
remote_file_path = os.path.join(urllib.unquote(self.parsed_url.path.replace('///', '/')),
remote_filename).rstrip()
commandline = self.acd_cmd + " rm '%s'" % (remote_file_path)
self.subprocess_popen(commandline)
duplicity.backend.register_backend("acd+acdcli", ACDBackend)