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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 django.core.cache import cache
from keystoneauth1 import access
from keystoneauth1.access import service_catalog
from keystoneauth1.exceptions import HttpError
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from newton.pub.config import config
from newton.pub.exceptions import VimDriverNewtonException
from newton.requests.views.util import VimDriverUtils
logger = logging.getLogger(__name__)
DEBUG=True
MULTICLOUD_PREFIX = "http://%s:%s/api/multicloud-newton/v0" %(config.MSB_SERVICE_IP, config.MSB_SERVICE_PORT)
def update_catalog(vimid, catalog, multicould_namespace):
'''
replace the orignal endpoints with multicloud's
return the catalog with updated endpoints, and also another catalog with prefix and suffix of each endpoint
:param vimid:
:param catalog: service catalog to be updated
:param multicould_namespace: multicloud namespace prefix to replace the real one in catalog endpoints url
:return:updated catalog, and metadata_catalog looks like:
{
'compute': {
'prefix': 'http://ip:port',
'proxy_prefix': 'http://another_ip: another_port',
'suffix': 'v2.1/53a4ab9015c84ee892e46d294f3b8b2d',
},
'network': {
'prefix': 'http://ip:port',
'proxy_prefix': 'http://another_ip: another_port',
'suffix': '',
},
}
'''
metadata_catalog = {}
if catalog:
# filter and replace endpoints of catalogs
for item in catalog:
one_catalog = {}
metadata_catalog[item['type']] = one_catalog
endpoints = item['endpoints']
item['endpoints']=[]
for endpoint in endpoints:
interface = endpoint.get('interface', None)
if interface != 'public':
continue
# elif item["type"] == "identity":
# endpoint["url"] = multicould_namespace + "/%s/identity/v3" % vimid
else:
# replace the endpoint with MultiCloud's proxy
import re
endpoint_url = endpoint["url"]
# m = re.search(r'^http[s]*://([0-9.]+:[0-9]+)[/]*([0-9a-zA-Z/._-]*)$', endpoint_url)
m = re.search(r'^(http[s]?://[0-9.]+:[0-9]+)(/([0-9a-zA-Z/._-]+)$)?', endpoint_url)
if m:
real_prefix = m.group(1)
real_suffix = m.group(3)
# populate metadata_catalog
one_catalog['prefix'] = real_prefix
one_catalog['suffix'] = real_suffix if real_suffix else ''
one_catalog['proxy_prefix'] = multicould_namespace + "/%s" % vimid + "/" + item["type"]
endpoint_url = multicould_namespace + "/%s" % vimid + "/" + item["type"]
if real_suffix:
endpoint_url += "/" + real_suffix
if item["type"] == "identity":
endpoint_url = multicould_namespace + "/%s/identity/v3" % vimid
# endpoint["url"] = re.sub(r"^http([s]*)://([0-9.]+):([0-9]+)",
# multicould_namespace + "/%s/" % vimid + item["type"],
# endpoint["url"])
endpoint["url"] = endpoint_url
item['endpoints'].append( endpoint )
return catalog, metadata_catalog
else:
return None
pass
class Tokens(APIView):
service = {'service_type': 'identity',
'interface': 'public'}
def __init__(self):
self.proxy_prefix = MULTICLOUD_PREFIX
def post(self, request, vimid=""):
logger.debug("identityV3--post::> %s" % request.data)
sess = None
resp = None
resp_body = None
try:
# prepare request resource to vim instance
vim = VimDriverUtils.get_vim_info(vimid)
sess = VimDriverUtils.get_session(vim)
tmp_auth_state = VimDriverUtils.get_auth_state(vim, sess)
tmp_auth_info = json.loads(tmp_auth_state)
tmp_auth_token = tmp_auth_info['auth_token']
tmp_auth_data = tmp_auth_info['body']
#store the auth_state, redis/memcached
#set expiring in 1 hour
#update the catalog
tmp_auth_data['token']['catalog'], tmp_metadata_catalog = update_catalog(vimid, tmp_auth_data['token']['catalog'], self.proxy_prefix)
VimDriverUtils.update_token_cache(vim, sess, tmp_auth_token, tmp_auth_state, json.dumps(tmp_metadata_catalog))
resp = Response(headers={'X-Subject-Token': tmp_auth_token}, data=tmp_auth_data, status=status.HTTP_201_CREATED)
return resp
except VimDriverNewtonException as e:
return Response(data={'error': e.content}, status=e.status_code)
except HttpError as e:
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:
logger.error(traceback.format_exc())
return Response(data={'error': str(e)},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
pass
class Catalog(APIView):
service = {'service_type': 'identity',
'interface': 'public'}
def __init__(self):
self.proxy_prefix = MULTICLOUD_PREFIX
def get(self, request, vimid=""):
logger.debug("Catalog--get::data> %s" % request.data)
# logger.debug("Catalog--get::META> %s" % request.META)
try:
# prepare request resource to vim instance
#get token:
tmp_auth_token = request.META.get('HTTP_X_AUTH_TOKEN', None)
if not tmp_auth_token:
return Response(data={'error': "No X-Auth-Token found in headers"}, status=status.HTTP_401_UNAUTHORIZED)
vim = VimDriverUtils.get_vim_info(vimid)
#fetch the auth_state out of cache
tmp_auth_state, metadata_catalog = VimDriverUtils.get_token_cache(vim, tmp_auth_token)
if not tmp_auth_state:
return Response(data={'error': "Expired X-Auth-Token found in headers"}, status=status.HTTP_401_UNAUTHORIZED)
sess = VimDriverUtils.get_session(vim, auth_state=tmp_auth_state)
req_resource = "/auth/catalog"
resp = sess.get(req_resource, endpoint_filter=self.service)
#update token cache in case the token was required during the requests
tmp_auth_token = VimDriverUtils.update_token_cache(vim, sess, tmp_auth_token, tmp_auth_state)
content = resp.json()
tmp_auth_catalog = content['catalog']
update_catalog(vimid, tmp_auth_catalog, self.proxy_prefix)
return Response(headers={'X-Subject-Token':tmp_auth_token}, data={'catalog': tmp_auth_catalog}, status=resp.status_code)
except VimDriverNewtonException as e:
return Response(data={'error': e.content}, status=e.status_code)
except HttpError as e:
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:
logger.error(traceback.format_exc())
return Response(data={'error': str(e)},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
pass
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