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69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
# (c) 2014, Michael DeHaan <michael.dehaan@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible 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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# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import absolute_import
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import collections
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import json
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import os
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import shutil
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import sys
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import tempfile
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from datetime import datetime
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from ansible import constants as C
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from ansible.cache.memory import CacheModule as MemoryCacheModule
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class CacheModule(MemoryCacheModule):
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def __init__(self):
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super(CacheModule, self).__init__()
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self._timeout = int(C.CACHE_PLUGIN_TIMEOUT)
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self._filename = '/tmp/ansible_facts.json'
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if os.access(self._filename, os.R_OK):
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mtime = datetime.fromtimestamp(os.path.getmtime(self._filename))
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if self._timeout == 0 or (datetime.now() - mtime).total_seconds() < self._timeout:
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with open(self._filename, 'rb') as f:
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# we could make assumptions about the MemoryCacheModule here if we wanted
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# to be more efficient, but performance isn't the priority with this module
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data = json.load(f)
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if isinstance(data, collections.Mapping):
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for k, v in data.items():
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super(CacheModule, self).set(k, v)
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def set(self, *args, **kwargs):
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super(CacheModule, self).set(*args, **kwargs)
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self.fsync()
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def delete(self, *args, **kwargs):
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super(CacheModule, self).delete(*args, **kwargs)
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self.fsync()
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def fsync(self):
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temp = tempfile.TemporaryFile('r+b')
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try:
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json.dump(self._cache, temp, separators=(',', ':'))
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temp.seek(0)
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with open(self._filename, 'w+b') as f:
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shutil.copyfileobj(temp, f)
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finally:
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temp.close()
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def flush(self):
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super(CacheModule, self).flush()
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self.fsync()
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