vitrage/vitrage/utils/file.py

71 lines
2.0 KiB
Python

# Copyright 2016 - Nokia
#
# 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 os
from oslo_log import log
import yaml
LOG = log.getLogger(__name__)
def list_files(dir_path,
suffix=None,
with_pathname=False,
with_exception=False):
if not os.path.isdir(dir_path):
return []
try:
file_list = os.listdir(dir_path)
except Exception as e:
if with_exception:
raise
else:
LOG.error("Fails to list files in %s: %s" % (dir_path, e))
return []
if suffix:
file_list = [os.path.join(dir_path, f) if with_pathname else f
for f in file_list if f.endswith(suffix)]
return file_list
def load_yaml_files(dir_path, with_exception=False):
files = list_files(dir_path, '.yaml', with_pathname=True)
yaml_files = []
for f in files:
config = load_yaml_file(f, with_exception)
if config:
yaml_files.append(config)
return yaml_files
def load_yaml_file(full_path, with_exception=False):
if not os.path.isfile(full_path):
LOG.error("File doesn't exist: %s." % full_path)
return None
with open(full_path, 'r') as stream:
try:
return yaml.load(stream, Loader=yaml.BaseLoader)
except Exception as e:
if with_exception:
raise
else:
LOG.error("Fails to parse file: %s. %s" % (full_path, e))
return None