51 lines
1.4 KiB
Python
51 lines
1.4 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):
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cache_dir = self._get_cache_dir(cachedir)
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self.region = make_region().configure(
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'dogpile.cache.dbm',
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arguments={
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'filename': os.path.join(cache_dir, 'cache.dbm')
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}
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)
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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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