RETIRED, Function as a Service for OpenStack
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# Copyright 2017 Catalyst IT Limited
#
# 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 zipfile
from oslo_config import cfg
from oslo_log import log as logging
from oslo_utils import fileutils
from qinling import exceptions as exc
from qinling.storage import base
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class FileSystemStorage(base.PackageStorage):
"""Interact with file system for function package storage."""
def __init__(self, *args, **kwargs):
fileutils.ensure_tree(CONF.storage.file_system_dir)
def store(self, project_id, function, data):
LOG.info(
'Store package, function: %s, project: %s', function, project_id
)
project_path = os.path.join(CONF.storage.file_system_dir, project_id)
fileutils.ensure_tree(project_path)
func_zip = os.path.join(project_path, '%s.zip' % function)
with open(func_zip, 'wb') as fd:
fd.write(data)
if not zipfile.is_zipfile(func_zip):
fileutils.delete_if_exists(func_zip)
raise exc.InputException("Package is not a valid ZIP package.")
def retrieve(self, project_id, function):
LOG.info(
'Get package data, function: %s, project: %s', function, project_id
)
func_zip = os.path.join(
CONF.storage.file_system_dir,
'%s/%s.zip' % (project_id, function)
)
if not os.path.exists(func_zip):
raise exc.StorageNotFoundException(
'Package of function %s for project %s not found.' %
(function, project_id)
)
f = open(func_zip, 'rb')
return f
def delete(self, project_id, function):
LOG.info(
'Delete package data, function: %s, project: %s', function,
project_id
)
func_zip = os.path.join(
CONF.storage.file_system_dir,
'%s/%s.zip' % (project_id, function)
)
if os.path.exists(func_zip):
os.remove(func_zip)