Package googleapiclient :: Package discovery_cache :: Module appengine_memcache
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Source Code for Module googleapiclient.discovery_cache.appengine_memcache

 1  # Copyright 2014 Google Inc. All Rights Reserved. 
 2  # 
 3  # Licensed under the Apache License, Version 2.0 (the "License"); 
 4  # you may not use this file except in compliance with the License. 
 5  # You may obtain a copy of the License at 
 6  # 
 7  #      http://www.apache.org/licenses/LICENSE-2.0 
 8  # 
 9  # Unless required by applicable law or agreed to in writing, software 
10  # distributed under the License is distributed on an "AS IS" BASIS, 
11  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
12  # See the License for the specific language governing permissions and 
13  # limitations under the License. 
14   
15  """App Engine memcache based cache for the discovery document.""" 
16   
17  import logging 
18   
19  # This is only an optional dependency because we only import this 
20  # module when google.appengine.api.memcache is available. 
21  from google.appengine.api import memcache 
22   
23  from . import base 
24  from ..discovery_cache import DISCOVERY_DOC_MAX_AGE 
25   
26  NAMESPACE = 'google-api-client' 
27   
28   
29 -class Cache(base.Cache):
30 """A cache with app engine memcache API.""" 31
32 - def __init__(self, max_age):
33 """Constructor. 34 35 Args: 36 max_age: Cache expiration in seconds. 37 """ 38 self._max_age = max_age
39
40 - def get(self, url):
41 try: 42 return memcache.get(url, namespace=NAMESPACE) 43 except Exception as e: 44 logging.warning(e, exc_info=True)
45
46 - def set(self, url, content):
47 try: 48 memcache.set(url, content, time=int(self._max_age), namespace=NAMESPACE) 49 except Exception as e: 50 logging.warning(e, exc_info=True)
51 52 cache = Cache(max_age=DISCOVERY_DOC_MAX_AGE) 53