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   
27  LOGGER = logging.getLogger(__name__) 
28   
29  NAMESPACE = 'google-api-client' 
30   
31   
32 -class Cache(base.Cache): 
33    """A cache with app engine memcache API.""" 
34   
35 -  def __init__(self, max_age): 
36        """Constructor. 
37   
38        Args: 
39          max_age: Cache expiration in seconds. 
40        """ 
41        self._max_age = max_age 
42   
43 -  def get(self, url): 
44      try: 
45        return memcache.get(url, namespace=NAMESPACE) 
46      except Exception as e: 
47        LOGGER.warning(e, exc_info=True) 
48   
49 -  def set(self, url, content): 
50      try: 
51        memcache.set(url, content, time=int(self._max_age), namespace=NAMESPACE) 
52      except Exception as e: 
53        LOGGER.warning(e, exc_info=True) 
54   
55  cache = Cache(max_age=DISCOVERY_DOC_MAX_AGE) 
56