cdist-backup/lib/cdist/context.py
Nico Schottelius 73fa0e1ab7 path becomes context (+1 happy developer)
Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>
2011-10-07 11:51:21 +02:00

118 lines
4.3 KiB
Python

# -*- coding: utf-8 -*-
#
# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist 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 3 of the License, or
# (at your option) any later version.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import os
import shutil
import sys
import tempfile
log = logging.getLogger(__name__)
import cdist.exec
class Path:
"""Class that handles path related configurations"""
def __init__(self, target_host, initial_manifest=False, debug=False):
self.target_host = target_host
# Base and Temp Base
if "__cdist_base_dir" in os.environ:
self.base_dir = os.environ['__cdist_base_dir']
else:
self.base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir, os.pardir))
# Input directories
self.conf_dir = os.path.join(self.base_dir, "conf")
self.cache_base_dir = os.path.join(self.base_dir, "cache")
self.cache_dir = os.path.join(self.cache_base_dir, target_host)
self.global_explorer_dir = os.path.join(self.conf_dir, "explorer")
self.lib_dir = os.path.join(self.base_dir, "lib")
self.manifest_dir = os.path.join(self.conf_dir, "manifest")
self.type_base_dir = os.path.join(self.conf_dir, "type")
# Mostly static, but can be overwritten on user demand
if initial_manifest:
self.initial_manifest = initial_manifest
else:
self.initial_manifest = os.path.join(self.manifest_dir, "init")
# Output directories
if "__cdist_out_dir" in os.environ:
self.out_dir = os.environ['__cdist_out_dir']
else:
self.out_dir = os.path.join(tempfile.mkdtemp(), "out")
self.global_explorer_out_dir = os.path.join(self.out_dir, "explorer")
self.object_base_dir = os.path.join(self.out_dir, "object")
self.bin_dir = os.path.join(self.out_dir, "bin")
# Remote directories
if "__cdist_remote_base_dir" in os.environ:
self.remote_base_dir = os.environ['__cdist_remote_base_dir']
else:
self.remote_base_dir = "/var/lib/cdist"
self.remote_conf_dir = os.path.join(self.remote_base_dir, "conf")
self.remote_object_dir = os.path.join(self.remote_base_dir, "object")
self.remote_type_dir = os.path.join(self.remote_conf_dir, "type")
self.remote_global_explorer_dir = os.path.join(self.remote_conf_dir, "explorer")
# Create directories
self.__init_out_dirs()
def cleanup(self):
# Do not use in __del__:
# http://docs.python.org/reference/datamodel.html#customization
# "other globals referenced by the __del__() method may already have been deleted
# or in the process of being torn down (e.g. the import machinery shutting down)"
#
log.debug("Saving" + self.base_dir + "to " + self.cache_dir)
# Remove previous cache
if os.path.exists(self.cache_dir):
shutil.rmtree(self.cache_dir)
shutil.move(self.base_dir, self.cache_dir)
def __init_env(self):
"""Setup environment"""
os.environ['__cdist_out_dir'] = self.out_dir
def __init_out_dirs(self):
"""Initialise output directory structure"""
# Create base dir, if user supplied and not existing
if not os.isdir(self.base_dir):
os.mkdir(self.base_dir)
os.mkdir(self.out_dir)
os.mkdir(self.global_explorer_out_dir)
os.mkdir(self.bin_dir)
def remote_mkdir(self, directory):
"""Create directory on remote side"""
cdist.exec.run_or_fail(["mkdir", "-p", directory], remote_prefix=True)
def remove_remote_dir(self, destination):
cdist.exec.run_or_fail(["rm", "-rf", destination], remote_prefix=True)