sdk/python/arvados/safeapi.py

   1 import threading
   2 import api
   3 import keep
   4 import config
   5 import copy
   6
   7 class ThreadSafeApiCache(object):
   8     """Threadsafe wrapper for API objects.
   9
  10     This stores and returns a different api object per thread, because httplib2
  11     which underlies apiclient is not threadsafe.
  12
  13     """
  14
  15     def __init__(self, apiconfig=None, keep_params={}):
  16         if apiconfig is None:
  17             apiconfig = config.settings()
  18         self.apiconfig = copy.copy(apiconfig)
  19         self.local = threading.local()
  20         self.keep = keep.KeepClient(api_client=self, **keep_params)
  21
  22     def localapi(self):
  23         if 'api' not in self.local.__dict__:
  24             self.local.api = api.api_from_config('v1', apiconfig=self.apiconfig)
  25         return self.local.api
  26
  27     def __getattr__(self, name):
  28         # Proxy nonexistent attributes to the thread-local API client.
  29         if name == "api_token":
  30             return self.apiconfig['ARVADOS_API_TOKEN']
  31         return getattr(self.localapi(), name)