cdist/cdist/shell.py

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# -*- coding: utf-8 -*-
#
# 2013 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 subprocess
# initialise cdist
import cdist.exec.local
import cdist.config
log = logging.getLogger(__name__)
class Shell(object):
def __init__(self, shell=None):
self.shell = shell
self.target_host = "cdist-shell-no-target-host"
self.local = cdist.exec.local.Local(
target_host=self.target_host)
def _init_shell(self):
"""Select shell to execute, if not specified by user"""
if not self.shell:
if 'SHELL' in os.environ:
self.shell = os.environ['SHELL']
else:
self.shell = "/bin/sh"
def _init_files_dirs(self):
self.local.create_files_dirs()
def _init_environment(self):
self.env = os.environ.copy()
additional_env = {
'PATH': "%s:%s" % (self.local.bin_path, os.environ['PATH']),
'__cdist_type_base_path': self.local.type_path, # for use in type emulator
'__cdist_manifest': "cdist shell",
'__global': self.local.base_path,
'__target_host': self.target_host,
'__manifest': self.local.manifest_path,
'__explorer': self.local.global_explorer_path,
}
self.env.update(additional_env)
def run(self):
self._init_shell()
self._init_files_dirs()
self._init_environment()
log.info("Starting shell...")
self.local.run([self.shell], self.env)
log.info("Finished shell.")
@classmethod
def commandline(cls, args):
shell = cls(args.shell)
shell.run()