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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.services import Services
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 DnsaasDelegate(Services):
'''
DNSaaS delegate service
'''
def __init__(self):
self._logger = logger
def _do_action(self, action, request, vim_id, servicetype, requri):
tmp_auth_token = self._get_token(request)
try:
# fetch the auth_state out of cache
auth_state_str, metadata_catalog_str = VimDriverUtils.get_token_cache(tmp_auth_token)
if not auth_state_str:
#invalid token
return Response(data={'error': "request token %s is not valid" % (tmp_auth_token)},
status=status.HTTP_404_NOT_FOUND)
# get project name from auth_state
auth_state = json.loads(auth_state_str)
if not auth_state:
# invalid token
return Response(data={'error': "request token %s is broken" % (tmp_auth_token)},
status=status.HTTP_404_NOT_FOUND)
tenant_name = auth_state['body']['token']['project']['name']
#find out the delegated DNSaaS provider
viminfo = VimDriverUtils.get_vim_info(vim_id)
if not viminfo:
return Response(data={'error': "vimid %s is not found" % (vim_id)},
status=status.HTTP_404_NOT_FOUND)
cloud_dns_delegate_info = None
cloud_extra_info_str = viminfo.get('cloud_extra_info')
if cloud_extra_info_str:
cloud_extra_info = json.loads(cloud_extra_info_str)
cloud_dns_delegate_info = cloud_extra_info.get("dns-delegate")
if not cloud_dns_delegate_info \
or not cloud_dns_delegate_info.get("cloud-owner") \
or not cloud_dns_delegate_info.get("cloud-region-id"):
return Response(data={'error': "dns-delegate for vimid %s is not configured"
% (vim_id)},
status=status.HTTP_404_NOT_FOUND)
vimid_delegate = cloud_dns_delegate_info.get("cloud-owner") \
+ "_" \
+ cloud_dns_delegate_info.get("cloud-region-id")
#now forward request to delegated DNS service endpoint
vim = VimDriverUtils.get_vim_info(vimid_delegate)
if not vim:
return Response(data={'error': "vimid %s is not found" % (vimid_delegate)},
status=status.HTTP_404_NOT_FOUND)
sess = VimDriverUtils.get_session(vim, tenantname=tenant_name, auth_state=None)
cloud_owner, regionid = extsys.decode_vim_id(vimid_delegate)
interface = 'public'
service = {
'service_type': servicetype,
'interface': interface,
'region_id': regionid
}
req_resource = requri
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}, data=content, status=resp.status_code)
return Response(headers={'X-Subject-Token': tmp_auth_token}, 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="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("get", request, vimid, "dns", requri)
def head(self, request, vimid="", servicetype="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("head", request, vimid, "dns", requri)
def post(self, request, vimid="", servicetype="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("post", request, vimid, "dns", requri)
def put(self, request, vimid="", servicetype="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("put", request, vimid, "dns", requri)
def patch(self, request, vimid="", servicetype="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("patch", request, vimid, "dns", requri)
def delete(self, request, vimid="", servicetype="dns-delegate", requri=""):
self._logger.debug("DnsaasDelegate--get::META> %s" % request.META)
self._logger.debug("DnsaasDelegate--get::data> %s" % request.data)
self._logger.debug("DnsaasDelegate--get::vimid, servicetype, requri> %s,%s,%s"
% (vimid, servicetype, requri))
return self._do_action("delete", request, vimid, "dns", requri)
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