64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# Copyright 2013 Cloudscaling Group, 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 inspect
|
|
import os
|
|
import threading
|
|
import webob
|
|
|
|
from gceapi.openstack.common import log as logging
|
|
from gceapi import wsgi_ext as openstack_wsgi
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class Controller(object):
|
|
|
|
_lock = threading.RLock()
|
|
_files = {}
|
|
|
|
def discovery(self, req, version):
|
|
"""Returns appropriate json by its version."""
|
|
|
|
if version in self._files:
|
|
return self._files[version]
|
|
|
|
self._lock.acquire()
|
|
try:
|
|
if version in self._files:
|
|
return self._files[version]
|
|
|
|
jfile = self._load_file(version)
|
|
jfile = jfile.replace("{HOST_URL}", req.host_url)
|
|
self._files[version] = jfile
|
|
return jfile
|
|
finally:
|
|
self._lock.release()
|
|
|
|
def _load_file(self, version):
|
|
current_file = os.path.abspath(inspect.getsourcefile(lambda _: None))
|
|
current_dir = os.path.dirname(current_file)
|
|
file_name = os.path.join(current_dir, "compute", version + ".json")
|
|
try:
|
|
f = open(file_name)
|
|
except Exception as ex:
|
|
raise webob.exc.HTTPNotFound(ex)
|
|
result = f.read()
|
|
f.close()
|
|
return result
|
|
|
|
|
|
def create_resource():
|
|
return openstack_wsgi.Resource(Controller())
|