af5f511cf5
Rather then hacking up our cache object while using a file backend, we can simply ask dogpile.cache to use a null backend. This way we keep things simple. Change-Id: Ibf34c4e26652629c3ee589fdcdd65188792aafef Signed-off-by: Paul Belanger <pabelanger@redhat.com>
56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# Copyright 2015 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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from dogpile.cache.region import make_region
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LOG = logging.getLogger(__name__)
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class Cache(object):
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def __init__(self, cachedir, enabled=True):
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if enabled:
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backend = 'dogpile.cache.dbm'
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cache_dir = self._get_cache_dir(cachedir)
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filename = os.path.join(cache_dir, 'cache.dbm')
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LOG.debug('Using cache: %s' % filename)
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arguments = {
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'filename': filename,
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}
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else:
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backend = 'dogpile.cache.null'
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arguments = {}
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self.region = make_region().configure(backend, arguments=arguments)
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def get(self, title):
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res = self.region.get(title)
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return res if res else None
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def has_changed(self, title, md5):
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if self.get(title) == md5:
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return False
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return True
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def set(self, title, md5):
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self.region.set(title, md5)
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def _get_cache_dir(self, cachedir):
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path = os.path.expanduser(cachedir)
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if not os.path.isdir(path):
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os.makedirs(path)
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return path
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