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path: root/newton/newton/requests/views/subnet.py
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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

from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView

from newton.pub.exceptions import VimDriverNewtonException

from util import VimDriverUtils

logger = logging.getLogger(__name__)


class Subnets(APIView):
    service = {'service_type': 'network',
               'interface': 'public',
               'region_name': 'RegionOne'}
    keys_mapping = [
        ("project_id", "tenantId"),
        ("network_id", "networkId"),
        ("ip_version", "ipVersion"),
        ("enable_dhcp", "enableDhcp"),
        ("gateway_ip", "gatewayIp"),
        ("dns_nameservers", "dnsNameservers"),
        ("host_routes", "hostRoutes"),
        ("allocation_pools", "allocationPools"),
    ]

    def get(self, request, vimid="", tenantid="", subnetid=""):
        logger.debug("Subnets--get::> %s" % request.data)
        try:
            # prepare request resource to vim instance
            req_resouce = "v2.0/subnets"
            if subnetid:
                req_resouce += "/%s" % subnetid

            query = VimDriverUtils.get_query_part(request)
            if query:
                req_resouce += "?%s" % query

            vim = VimDriverUtils.get_vim_info(vimid)
            sess = VimDriverUtils.get_session(vim, tenantid)
            resp = sess.get(req_resouce, endpoint_filter=self.service)
            content = resp.json()
            vim_dict = {
                "vimName": vim["name"],
                "vimId": vim["vimId"],
                "tenantId": tenantid,
            }
            content.update(vim_dict)

            if not subnetid:
                # convert the key naming in subnets
                for subnet in content["subnets"]:
                    VimDriverUtils.replace_key_by_mapping(subnet,
                                                          self.keys_mapping)
            else:
                # convert the key naming in the subnet specified by id
                old_subnet = content["subnet"]
                content.pop("subnet", None)
                VimDriverUtils.replace_key_by_mapping(old_subnet,
                                                      self.keys_mapping)
                content.update(old_subnet)

            return Response(data=content, status=resp.status_code)
        except VimDriverNewtonException as e:
            return Response(data={'error': e.content}, status=e.status_code)
        except Exception as e:
            return Response(data={'error': str(e)},
                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)

    def post(self, request, vimid="", tenantid="", subnetid=""):
        logger.debug("Subnets--post::> %s" % request.data)
        try:
            # prepare request resource to vim instance
            req_resouce = "v2.0/subnets"

            vim = VimDriverUtils.get_vim_info(vimid)
            sess = VimDriverUtils.get_session(vim, tenantid)
            subnet = request.data
            VimDriverUtils.replace_key_by_mapping(subnet,
                                                  self.keys_mapping, True)
            req_body = json.JSONEncoder().encode({"subnet": subnet})
            resp = sess.post(req_resouce, data=req_body,
                             endpoint_filter=self.service)
            resp_body = resp.json()["subnet"]
            VimDriverUtils.replace_key_by_mapping(resp_body, self.keys_mapping)
            vim_dict = {
                "vimName": vim["name"],
                "vimId": vim["vimId"],
                "tenantId": tenantid,
            }
            resp_body.update(vim_dict)
            return Response(data=resp_body, status=resp.status_code)
        except VimDriverNewtonException as e:
            return Response(data={'error': e.content}, status=e.status_code)
        except Exception as e:
            return Response(data={'error': str(e)},
                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
        pass

    def delete(self, request, vimid="", tenantid="", subnetid=""):
        logger.debug("Subnets--delete::> %s" % request.data)
        try:
            # prepare request resource to vim instance
            req_resouce = "v2.0/subnets"
            if subnetid:
                req_resouce += "/%s" % subnetid
            query = VimDriverUtils.get_query_part(request)
            if query:
                req_resouce += "?%s" % query

            vim = VimDriverUtils.get_vim_info(vimid)
            sess = VimDriverUtils.get_session(vim, tenantid)
            resp = sess.delete(req_resouce, endpoint_filter=self.service)
            return Response(status=resp.status_code)
        except VimDriverNewtonException as e:
            return Response(data={'error': e.content}, status=e.status_code)
        except Exception as e:
            return Response(data={'error': str(e)},
                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)
        pass