cdist configuration management Latest manual: https://www.cdi.st/manual/latest/ Home page: https://www.cdi.st
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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 shutil
import tempfile
log = logging.getLogger(__name__)
class Message:
"""Support messaging between types
"""
def __init__(self, prefix, messages):
self.prefix = prefix
self.global_messages = messages
in_fd, self.messages_in = tempfile.mkstemp(suffix='.cdist_message_in')
out_fd, self.messages_out = tempfile.mkstemp(
suffix='.cdist_message_out')
os.close(in_fd)
os.close(out_fd)
self._copy_messages()
@property
def env(self):
env = {}
env['__messages_in'] = self.messages_in
env['__messages_out'] = self.messages_out
return env
def _copy_messages(self):
"""Copy global contents into our copy"""
shutil.copyfile(self.global_messages, self.messages_in)
def _cleanup(self):
"""remove temporary files"""
if os.path.exists(self.messages_in):
os.remove(self.messages_in)
if os.path.exists(self.messages_out):
os.remove(self.messages_out)
def _merge_messages(self):
"""merge newly written lines into global file"""
with open(self.messages_out) as fd:
content = fd.readlines()
with open(self.global_messages, 'a') as fd:
for line in content:
fd.write("{}:{}".format(self.prefix, line))
def merge_messages(self):
self._merge_messages()
self._cleanup()