murano-agent/python-agent/muranoagent/files_manager.py

72 lines
2.3 KiB
Python

# Copyright (c) 2013 Mirantis Inc.
#
# 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
import base64
import shutil
from config import CONF
class FilesManager(object):
def __init__(self, execution_pan):
self._fetched_files = {}
self._files = execution_pan.get('Files') or {}
self._cache_folder = os.path.join(
CONF.storage, 'files', execution_pan.ID)
if os.path.exists(self._cache_folder):
self.clear()
os.makedirs(self._cache_folder)
def put_file(self, file_id, script):
cache_path = self._fetch_file(file_id)
script_folder = os.path.join(self._cache_folder, script)
if not os.path.exists(script_folder):
os.mkdir(script_folder)
filedef = self._files[file_id]
filename = filedef['Name']
file_folder = os.path.join(script_folder, os.path.dirname(filename))
if not os.path.exists(file_folder):
os.makedirs(file_folder)
script_path = os.path.join(script_folder, filename)
os.symlink(cache_path, script_path)
return script_path
def _fetch_file(self, file_id):
if file_id in self._fetched_files:
return self._fetched_files[file_id]
filedef = self._files[file_id]
out_path = os.path.join(self._cache_folder, file_id)
body_type = filedef.get('BodyType', 'Text')
with open(out_path, 'w') as out_file:
if body_type == 'Text':
out_file.write(filedef['Body'])
elif body_type == 'Base64':
out_file.write(base64.b64decode(filedef['Body']))
self._fetched_files[file_id] = out_path
return out_path
def clear(self):
os.chdir(os.path.dirname(self._cache_folder))
shutil.rmtree(self._cache_folder, ignore_errors=True)
shutil.rmtree(self._cache_folder, ignore_errors=True)