def _get_available_backends(self):
try:
qconfig = get_qconfig()
if qconfig is None or \
qconfig.APItoken is None or \
len(qconfig.APItoken) == 0 or \
'url' not in qconfig.config:
qconfig = None
self._available_backends = QuantumAlgorithm.register_and_get_operational_backends(
qconfig)
except Exception as e:
logger.debug(str(e))
finally:
self._backendsthread = None
def __init__(self):
"""Create Preferences object."""
self._preferences = {'version': Preferences._VERSION}
self._qconfig_changed = False
self._logging_config_changed = False
self._token = None
self._url = Preferences.URL
self._hub = None
self._group = None
self._project = None
self._verify = Preferences.VERIFY
self._provider_name = Preferences.PROVIDER_NAME
self._proxy_urls = None
template_file = os.path.join(os.path.dirname(__file__),
'Qconfig_template.txt')
self._qconfig_template = []
with open(template_file, 'r') as stream:
for line in stream:
self._qconfig_template.append(line)
qconfig = qiskit_acqua.get_qconfig()
if qconfig is not None:
self._token = qconfig.APItoken
if 'url' in qconfig.config:
self._url = qconfig.config['url']
if 'hub' in qconfig.config:
self._hub = qconfig.config['hub']
if 'group' in qconfig.config:
self._group = qconfig.config['group']
if 'project' in qconfig.config:
self._project = qconfig.config['project']
if 'verify' in qconfig.config:
self._verify = qconfig.config['verify']
if 'provider_name' in qconfig.config:
self._provider_name = qconfig.config['provider_name']
if 'proxies' in qconfig.config and isinstance(
qconfig.config['proxies'],
dict) and 'urls' in qconfig.config['proxies']:
self._proxy_urls = qconfig.config['proxies']['urls']
home = os.path.expanduser("~")
self._filepath = os.path.join(home, Preferences._FILENAME)
try:
with open(self._filepath) as json_pref:
self._preferences = json.load(json_pref)
except:
pass
def get_qconfig_path(self, default_value=None):
qconfig = qiskit_acqua.get_qconfig()
if qconfig is not None:
return os.path.abspath(qconfig.__file__)
return default_value
def qconfig(self):
"""Return Qconfig configuration"""
if self._qconfig is None:
self._qconfig = get_qconfig()
return self._qconfig
