57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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# Copyright 2014 Google Inc. All Rights Reserved.
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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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""App Engine memcache based cache for the discovery document."""
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import logging
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# This is only an optional dependency because we only import this
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# module when google.appengine.api.memcache is available.
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from google.appengine.api import memcache
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from . import base
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from ..discovery_cache import DISCOVERY_DOC_MAX_AGE
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LOGGER = logging.getLogger(__name__)
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NAMESPACE = "google-api-client"
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class Cache(base.Cache):
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"""A cache with app engine memcache API."""
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def __init__(self, max_age):
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"""Constructor.
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Args:
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max_age: Cache expiration in seconds.
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"""
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self._max_age = max_age
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def get(self, url):
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try:
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return memcache.get(url, namespace=NAMESPACE)
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except Exception as e:
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LOGGER.warning(e, exc_info=True)
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def set(self, url, content):
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try:
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memcache.set(url, content, time=int(self._max_age), namespace=NAMESPACE)
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except Exception as e:
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LOGGER.warning(e, exc_info=True)
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cache = Cache(max_age=DISCOVERY_DOC_MAX_AGE)
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