# Copyright (c) 2023, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Dict, Optional
from nvflare.fuel.utils.config import Config, ConfigFormat, ConfigLoader
[docs]class PyhoconConfig(Config):
def __init__(self, conf, file_path: Optional[str] = None):
super(PyhoconConfig, self).__init__(conf, ConfigFormat.PYHOCON, file_path)
[docs] def to_dict(self, resolve: Optional[bool] = True) -> Dict:
return self._convert_conf_item(self.conf)
[docs] def to_str(self, element: Optional[Dict] = None) -> str:
from pyhocon import ConfigFactory as CF
from pyhocon.converter import HOCONConverter
if element is None:
return HOCONConverter.to_hocon(self.conf)
else:
config = CF.from_dict(element)
return HOCONConverter.to_hocon(config)
def _convert_conf_item(self, conf_item):
from pyhocon import ConfigTree
result = {}
if isinstance(conf_item, ConfigTree):
if len(conf_item) > 0:
for key, item in conf_item.items():
new_key = key.strip('"') # for dotted keys enclosed with "" to not be interpreted as nested key
new_value = self._convert_conf_item(item)
result[new_key] = new_value
elif isinstance(conf_item, list):
if len(conf_item) > 0:
result = [self._convert_conf_item(item) for item in conf_item]
else:
result = []
elif conf_item is True:
return True
elif conf_item is False:
return False
else:
return conf_item
return result
[docs]class PyhoconLoader(ConfigLoader):
def __init__(self):
super(PyhoconLoader, self).__init__(ConfigFormat.PYHOCON)
[docs] def load_config(self, file_path: str) -> Config:
from pyhocon import ConfigTree
conf: ConfigTree = self._from_file(file_path)
return PyhoconConfig(conf, file_path)
[docs] def load_config_from_str(self, config_str: str) -> Config:
from pyhocon import ConfigFactory as CF
conf = CF.parse_string(config_str)
return PyhoconConfig(conf)
[docs] def load_config_from_dict(self, config_dict: dict) -> Config:
from pyhocon import ConfigFactory as CF
conf = CF.from_dict(config_dict)
return PyhoconConfig(conf)
def _from_file(self, file_path):
from pyhocon import ConfigFactory as CF
return CF.parse_file(file_path)