+
+def api_from_config(version=None, apiconfig=None, **kwargs):
+ """Return an apiclient Resources object enabling access to an Arvados server
+ instance.
+
+ :version:
+ A string naming the version of the Arvados REST API to use (for
+ example, 'v1').
+
+ :cache:
+ Use a cache (~/.cache/arvados/discovery) for the discovery
+ document.
+
+ :apiconfig:
+ If provided, this should be a dict-like object (must support the get()
+ method) with entries for ARVADOS_API_HOST, ARVADOS_API_TOKEN, and
+ optionally ARVADOS_API_HOST_INSECURE. If not provided, use
+ arvados.config (which gets these parameters from the environment by
+ default.)
+
+ """
+ # Load from user configuration or environment
+ if apiconfig is None:
+ apiconfig = config.settings()
+
+ for x in ['ARVADOS_API_HOST', 'ARVADOS_API_TOKEN']:
+ if x not in apiconfig:
+ raise ValueError("%s is not set. Aborting." % x)
+ host = apiconfig.get('ARVADOS_API_HOST')
+ token = apiconfig.get('ARVADOS_API_TOKEN')
+ insecure = config.flag_is_true('ARVADOS_API_HOST_INSECURE', apiconfig)
+
+ return api(version=version, host=host, token=token, insecure=insecure, **kwargs)