Package googleapiclient :: Package discovery_cache |
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# Source Code for Package googleapiclient.discovery_cache

     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  """Caching utility for the discovery document."""
    16
    17  from __future__ import absolute_import
    18
    19  import logging
    20  import datetime
    21  import os
    22
    23  LOGGER = logging.getLogger(__name__)
    24
    25  DISCOVERY_DOC_MAX_AGE = 60 * 60 * 24  # 1 day
    26
    27
    28 -def autodetect():
    29      """Detects an appropriate cache module and returns it.
    30
    31    Returns:
    32      googleapiclient.discovery_cache.base.Cache, a cache object which
    33      is auto detected, or None if no cache object is available.
    34    """
    35      if 'APPENGINE_RUNTIME' in os.environ:
    36          try:
    37              from google.appengine.api import memcache
    38              from . import appengine_memcache
    39
    40              return appengine_memcache.cache
    41          except Exception:
    42              pass
    43      try:
    44          from . import file_cache
    45
    46          return file_cache.cache
    47      except Exception as e:
    48          LOGGER.warning(e, exc_info=True)
    49          return None
    50