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# Copyright (C) 2008 Lars Wirzenius <liw@iki.fi>
#
# This program 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.
#
# 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 General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""A backup operation for Obnam."""
import logging
import obnam
class Backup(obnam.Operation):
"""Backup files the user has specified."""
name = "backup"
def do_it(self, roots):
logging.info("Starting backup")
logging.info("Getting and decoding host block")
app = self.get_application()
host = app.load_host()
app.get_store().load_maps()
# We don't need to load in file data, therefore we don't load
# the content map blocks.
old_gen_ids = host.get_generation_ids()
if old_gen_ids:
prev_gen = app.get_store().get_object(old_gen_ids[-1])
app.set_previous_generation(prev_gen)
gen = app.backup(roots)
app.get_store().commit_host_block([gen])
logging.info("Backup done")
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