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# Copyright (c) 2017 Wind River Systems, 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 logging
import json
import traceback
from keystoneauth1.exceptions import HttpError
import re
from rest_framework.permissions import BasePermission
from rest_framework.response import Response
from rest_framework import status
from rest_framework.views import APIView
from newton.proxy.views.proxy_utils import ProxyUtils
from newton.pub.exceptions import VimDriverNewtonException
from newton.pub.msapi import extsys
from newton.requests.views.util import VimDriverUtils
logger = logging.getLogger(__name__)
DEBUG=True
class HasValidToken(BasePermission):
def has_permission(self, request, view):
logger.debug("HasValidToken--has_permission::META> %s" % request.META)
token = request.META.get('HTTP_X_AUTH_TOKEN', None)
if token:
state, metadata = VimDriverUtils.get_token_cache(token)
if state:
return True
return False
class Services(APIView):
permission_classes = (HasValidToken,)
def __init__(self):
self._logger = logger
def _get_token(self, request):
return request.META.get('HTTP_X_AUTH_TOKEN', None)
def _get_resource_and_metadata(self, servicetype, metadata_catalog, requri):
real_prefix = None
proxy_prefix = None
suffix = None
if servicetype and metadata_catalog:
metadata_catalog = json.loads(metadata_catalog)
service_metadata = metadata_catalog.get(servicetype, None)
if service_metadata:
real_prefix = service_metadata['prefix']
proxy_prefix = service_metadata['proxy_prefix']
suffix = service_metadata['suffix']
if not real_prefix or not proxy_prefix:
raise VimDriverNewtonException(message="internal state error",
content="invalid cached metadata",
status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
if requri == suffix:
requri = None
if suffix and requri:
# remove the suffix from the requri to avoid duplicated suffix in real request uri later
tmp_pattern = re.compile(suffix)
requri = tmp_pattern.sub('', requri)
req_resource = ''
if requri and requri != '':
req_resource = "/" if re.match(r'//', requri) else '' + requri
return req_resource, metadata_catalog
def _do_action(self, action, request, vim_id, servicetype, requri):
tmp_auth_token = self._get_token(request)
try:
#special handling of compute/v2 request from APPC, temp solution for A release
if servicetype == 'compute':
tmp_pattern = re.compile(r'^v2/(.+)')
requri = tmp_pattern.sub(r'v2.1/' + r'\1', requri)
vim = VimDriverUtils.get_vim_info(vim_id)
# fetch the auth_state out of cache
auth_state, metadata_catalog = VimDriverUtils.get_token_cache(tmp_auth_token)
req_resource, metadata_catalog = self._get_resource_and_metadata(servicetype, metadata_catalog, requri)
sess = VimDriverUtils.get_session(vim, tenantid=None, auth_state=auth_state)
cloud_owner, regionid = extsys.decode_vim_id(vim_id)
interface = 'public'
service = {
'service_type': servicetype,
'interface': interface,
'region_id': regionid
}
querystr = VimDriverUtils.get_query_part(request)
if querystr:
req_resource += "?" + querystr
self._logger.debug("service " + action + " request uri %s" % (req_resource))
if(action == "get"):
resp = sess.get(req_resource, endpoint_filter=service,
headers={"Content-Type": "application/json",
"Accept": "application/json"})
elif(action == "post"):
resp = sess.post(req_resource, data=json.JSONEncoder().encode(request.data),
endpoint_filter=service,
headers={"Content-Type": "application/json",
"Accept": "application/json"})
elif(action == "put"):
resp = sess.put(req_resource, data=json.JSONEncoder().encode(request.data),
endpoint_filter=service,
headers={"Content-Type": "application/json",
"Accept": "application/json"})
elif(action == "patch"):
resp = sess.patch(req_resource, data=json.JSONEncoder().encode(request.data),
endpoint_filter=service,
headers={"Content-Type": "application/json",
"Accept": "application/json"})
elif (action == "delete"):
resp = sess.delete(req_resource, endpoint_filter=service,
headers={"Content-Type": "application/json",
"Accept": "application/json"})
content = resp.json() if resp.content else None
self._logger.debug("service " + action + " response: %s, %s" % (resp.status_code, content))
if (action == "delete"):
return Response(headers={'X-Subject-Token': tmp_auth_token}, status=resp.status_code)
else:
content = ProxyUtils.update_prefix(metadata_catalog, content)
if (action == "get"):
if requri == '/v3/auth/catalog' and content and content.get("catalog"):
content['catalog'] = ProxyUtils.update_catalog_dnsaas(
vim_id, content['catalog'], self.proxy_prefix, vim)
return Response(headers={'X-Subject-Token': tmp_auth_token}, data=content, status=resp.status_code)
except VimDriverNewtonException as e:
return Response(data={'error': e.content}, status=e.status_code)
except HttpError as e:
self._logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
return Response(data=e.response.json(), status=e.http_status)
except Exception as e:
self._logger.error(traceback.format_exc())
return Response(data={'error': str(e)},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
def head(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--head::META> %s" % request.META)
self._logger.debug("Services--head::data> %s" % request.data)
self._logger.debug("Services--head::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
token = self._get_token(request)
try:
vim = VimDriverUtils.get_vim_info(vimid)
auth_state, metadata_catalog = VimDriverUtils.get_token_cache(token)
sess = VimDriverUtils.get_session(vim, auth_state=auth_state)
req_resource = ''
if requri and requri != '':
req_resource = "/" if re.match(r'//', requri) else ''+ requri
cloud_owner, regionid = extsys.decode_vim_id(vimid)
interface = 'public'
service = {'service_type': servicetype,
'interface': interface,
'region_id': regionid}
self._logger.debug("service head request uri %s" % (req_resource))
resp = sess.head(req_resource, endpoint_filter=service)
content = resp.json() if resp.content else None
self._logger.debug("service head response: %s, %s" % (resp.status_code, content))
return Response(headers={'X-Subject-Token': token}, data=content, status=resp.status_code)
except VimDriverNewtonException as e:
return Response(data={'error': e.content}, status=e.status_code)
except HttpError as e:
self._logger.error("HttpError: status:%s, response:%s" % (e.http_status, e.response.json()))
return Response(data=e.response.json(), status=e.http_status)
except Exception as e:
self._logger.error(traceback.format_exc())
return Response(data={'error': str(e)},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
def get(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--get::META> %s" % request.META)
self._logger.debug("Services--get::data> %s" % request.data)
self._logger.debug("Services--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("get", request, vimid, servicetype, requri)
def post(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--post::META> %s" % request.META)
self._logger.debug("Services--post::data> %s" % request.data)
self._logger.debug("Services--post::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("post", request, vimid, servicetype, requri)
def put(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--put::META> %s" % request.META)
self._logger.debug("Services--put::data> %s" % request.data)
self._logger.debug("Services--put::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("put", request, vimid, servicetype, requri)
def patch(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--patch::META> %s" % request.META)
self._logger.debug("Services--patch::data> %s" % request.data)
self._logger.debug("Services--patch::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("patch", request, vimid, servicetype, requri)
def delete(self, request, vimid="", servicetype="", requri=""):
#self._logger.debug("Services--delete::META> %s" % request.META)
self._logger.debug("Services--delete::data> %s" % request.data)
self._logger.debug("Services--delete::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("delete", request, vimid, servicetype, requri)
class GetTenants(Services):
'''
Backward compatible API for /v2.0/tenants
'''
def __init__(self):
self._logger = logger
def get(self, request, vimid="", servicetype="identity", requri='projects'):
#self._logger.debug("GetTenants--get::META> %s" % request.META)
self._logger.debug("GetTenants--get::data> %s" % request.data)
self._logger.debug("GetTenants--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
tmp_auth_token = request.META.get('HTTP_X_AUTH_TOKEN', None)
resp = super(GetTenants,self).get(request, vimid, servicetype, requri)
if resp.status_code == status.HTTP_200_OK:
content = resp.data
return Response(headers={'X-Subject-Token': tmp_auth_token}, data={'tenants': content['projects'],'tenants_links':[]},
status=resp.status_code)
else:
return resp
def head(self, request, vimid="", servicetype="", requri=""):
return Response(data={'error': 'unsupported operation'}, status=status.HTTP_400_BAD_REQUEST)
def post(self, request, vimid="", servicetype="", requri=""):
return Response(data={'error': 'unsupported operation'}, status=status.HTTP_400_BAD_REQUEST)
def put(self, request, vimid="", servicetype="", requri=""):
return Response(data={'error': 'unsupported operation'}, status=status.HTTP_400_BAD_REQUEST)
def patch(self, request, vimid="", servicetype="", requri=""):
return Response(data={'error': 'unsupported operation'}, status=status.HTTP_400_BAD_REQUEST)
def delete(self, request, vimid="", servicetype="", requri=""):
return Response(data={'error': 'unsupported operation'}, status=status.HTTP_400_BAD_REQUEST)
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