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# This file is part of Moksha.
# Copyright (C) 2008-2010 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
log = logging.getLogger(__name__)
from moksha.exc import CacheBackendException
class Cache(object):
""" A memcached-specific caching interface """
def __init__(self, url, timeout=None, prefix=None):
try:
import memcache
except ImportError:
log.warning('Cannot import the `memcache` module. Install the '
'python-memcached package to enable Mokshas memcached '
'integration.')
return
self.mc = memcache.Client([url])
self.timeout = timeout or 300
self.prefix = prefix
if not self.mc.set('x', 'x', 1):
raise CacheBackendException("Cannot connect to Memcached")
def get(self, key):
return self.mc.get(key)
def set(self, key, value, timeout=None):
if self.prefix:
key = self.prefix + key
self.mc.set(key, value, timeout or self.timeout)
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