def accessor_from_settings(settings):
"""Get Accessor from configuration.
Args:
settings: dict(str -> value).
Returns:
Accessor (not connected).
"""
driver_name = settings.get('driver', DEFAULT_DRIVER)
metadata_driver = settings.get('metadata_driver', None)
data_driver = settings.get('data_driver', None)
if metadata_driver is None and data_driver is None:
return _build_simple_accessor(driver_name, settings)
else:
if metadata_driver is None:
raise ConfigError(
"Metadata driver is not provided. Please specify --metadata_driver"
)
if data_driver is None:
raise ConfigError(
"Data driver is not provided. Please specify --data_driver")
metadata_accessor = _build_simple_accessor(metadata_driver, settings)
data_accessor = _build_simple_accessor(data_driver, settings)
return bg_hybrid.HybridAccessor(
"%s_%s" % (metadata_driver, data_driver), metadata_accessor,
data_accessor)
def setUp(self):
self._metadata_accessor = Mock()
self._metadata_accessor.TYPE = 'mock'
self._data_accessor = Mock()
self._data_accessor.TYPE = 'mock'
self._accessor = hybrid.HybridAccessor("test_hybrid",
self._metadata_accessor,
self._data_accessor)
def accessor_from_settings(settings):
"""Get Accessor from configuration.
Args:
settings: dict(str -> value).
Returns:
Accessor (not connected).
"""
driver_name = settings.get("driver", DEFAULT_DRIVER)
metadata_driver = settings.get("metadata_driver", None)
data_driver = settings.get("data_driver", None)
if metadata_driver is None and data_driver is None:
return _build_simple_accessor(driver_name, settings)
else:
if metadata_driver is None:
raise ConfigError(
"Metadata driver is not provided. Please specify --metadata_driver"
)
if data_driver is None:
raise ConfigError(
"Data driver is not provided. Please specify --data_driver")
if metadata_driver == data_driver:
return _build_simple_accessor(data_driver, settings)
else:
# The data accessor may still update the metadata in its own storage
# (update_on on insert_points(), read_on on fetch_points()). Since we
# are in hybrid mode, the metadata accessor is responsible for these
# actions, therefore we can disable the metadata handling in the data
# accessor.
enable_metadata_key = data_driver + '_enable_metadata'
settings[enable_metadata_key] = False
metadata_accessor = _build_simple_accessor(metadata_driver,
settings)
data_accessor = _build_simple_accessor(data_driver, settings)
return bg_hybrid.HybridAccessor(
"%s_%s" % (metadata_driver, data_driver), metadata_accessor,
data_accessor)