78 lines
2.2 KiB
Python
78 lines
2.2 KiB
Python
# -*- coding: utf-8 -*-
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#
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# 2013 Nico Schottelius (nico-cdist at schottelius.org)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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import logging
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import os
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import shutil
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import tempfile
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log = logging.getLogger(__name__)
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class Message:
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"""Support messaging between types
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"""
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def __init__(self, prefix, messages):
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self.prefix = prefix
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self.global_messages = messages
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in_fd, self.messages_in = tempfile.mkstemp(suffix='.cdist_message_in')
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out_fd, self.messages_out = tempfile.mkstemp(
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suffix='.cdist_message_out')
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os.close(in_fd)
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os.close(out_fd)
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self._copy_messages()
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@property
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def env(self):
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env = {}
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env['__messages_in'] = self.messages_in
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env['__messages_out'] = self.messages_out
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return env
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def _copy_messages(self):
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"""Copy global contents into our copy"""
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shutil.copyfile(self.global_messages, self.messages_in)
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def _cleanup(self):
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"""remove temporary files"""
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if os.path.exists(self.messages_in):
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os.remove(self.messages_in)
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if os.path.exists(self.messages_out):
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os.remove(self.messages_out)
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def _merge_messages(self):
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"""merge newly written lines into global file"""
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with open(self.messages_out) as fd:
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content = fd.readlines()
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with open(self.global_messages, 'a') as fd:
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for line in content:
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fd.write("{}:{}".format(self.prefix, line))
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def merge_messages(self):
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self._merge_messages()
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self._cleanup()
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