/usr/share/pyshared/os_apply_config/collect_config.py is in python-os-apply-config 0.1.14-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | # Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
#
# 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.
import copy
import json
import os
from os_apply_config import config_exception as exc
def read_configs(config_files):
'''Generator yields data from any existing file in list config_files.'''
for input_path in [x for x in config_files if x]:
if os.path.exists(input_path):
try:
with open(input_path) as input_file:
yield((input_file.read(), input_path))
except IOError as e:
raise exc.ConfigException('Could not open %s for reading. %s' %
(input_path, e))
def parse_configs(config_data):
'''Generator yields parsed json for each item passed in config_data.'''
for input_data, input_path in config_data:
try:
yield(json.loads(input_data))
except ValueError:
raise exc.ConfigException('Could not parse metadata file: %s' %
input_path)
def _deep_merge_dict(a, b):
if not isinstance(b, dict):
return b
new_dict = copy.deepcopy(a)
for k, v in iter(b.items()):
if k in new_dict and isinstance(new_dict[k], dict):
new_dict[k] = _deep_merge_dict(new_dict[k], v)
else:
new_dict[k] = copy.deepcopy(v)
return new_dict
def merge_configs(parsed_configs):
'''Returns deep-merged dict from passed list of dicts.'''
final_conf = {}
for conf in parsed_configs:
final_conf = _deep_merge_dict(final_conf, conf)
return final_conf
def collect_config(os_config_files, fallback_paths=None):
'''Convenience method to read, parse, and merge all paths.'''
if fallback_paths:
os_config_files = fallback_paths + os_config_files
return merge_configs(parse_configs(read_configs(os_config_files)))
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