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)