def get_parameter_values(self, group_name):
if group_name not in self._groups:
self.log.info("Unknown parameter group: %s", group_name)
return {}
result = {}
group = self._groups[group_name]
multi_level_access = MultiLevelDictionaryAccess(result)
for parameter in group["parameters"].values():
value = parameter["get_func"]()
try:
multi_level_access.set_value(parameter["name"], value)
except TypeError as exc:
self.log.error(
"Failed to get parameter '%s' for group '%s': %s",
parameter["name"], group_name, exc)
return result
def set_parameter_values(self, group_name, value_dict):
if group_name not in self._groups:
self.log.info("Unknown parameter group: %s", group_name)
return
group = self._groups[group_name]
multi_level_access = MultiLevelDictionaryAccess(value_dict)
for parameter in group["parameters"].values():
try:
value = multi_level_access.get_value(parameter["name"])
except KeyError:
# the incoming value dictionary does not contain the key - we can skip it
pass
except TypeError as exc:
# this should not happen: the value dictionary is malformed
self.log.error(
"Failed to get parameter '%s' for group '%s': %s",
parameter["name"], group_name, exc)
else:
parameter["set_func"](value)
def get_default_parameter_values(self, group_name, set_name=None):
""" retrieve the default values of a given parameter group
@param group_name: name of the parameter group
"""
result = {}
if group_name not in self._groups:
self.log.info(
"Default Parameter Values: unknown parameter group: %s",
group_name)
return result
group = self._groups[group_name]
if not group["sets"]:
self.log.info(
"Default Parameter Values: missing parameter sets in group: %s",
group_name)
return result
multi_level_access = MultiLevelDictionaryAccess(result)
if set_name is None:
default_set = sorted(group["sets"].values(),
key=lambda item: item["weight"])[0]
else:
try:
default_set = group["sets"][set_name]
except KeyError:
self.log.warning(
"Default Parameter Values: failed to find request set: %s",
set_name)
return result
for key, value in default_set["parameters"].items():
try:
multi_level_access.set_value(key, value)
except TypeError as exc:
self.log.error(
"Failed to get default parameter '%s' for group '%s': %s",
key, group_name, exc)
return result