cdist configuration management
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77 lines
2.2 KiB
77 lines
2.2 KiB
# -*- 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("%s:%s" % (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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