multivimbroker/multivimbroker/forwarder/views.py

   1 # Copyright 2017 Wind River Systems, Inc.
   2 # Copyright (c) 2017-2018 VMware, Inc.
   3 #
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7 #
   8 #         http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 import os
  17 import json
  18
  19 from rest_framework.views import APIView
  20 from rest_framework.views import Response
  21 from rest_framework.views import status
  22 from multivimbroker.forwarder.base import BaseHandler
  23 from multivimbroker.pub.utils.syscomm import originHeaders
  24
  25
  26 class BaseServer(BaseHandler, APIView):
  27
  28     def get(self, request, vimid):
  29         raise NotImplementedError()
  30
  31     def post(self, request, vimid):
  32         raise NotImplementedError()
  33
  34     def put(self, request, vimid):
  35         raise NotImplementedError()
  36
  37     def delete(self, request, vimid):
  38         raise NotImplementedError()
  39
  40     def head(self, request, vimid):
  41         raise NotImplementedError()
  42
  43     def patch(self, request, vimid):
  44         raise NotImplementedError()
  45
  46
  47 # proxy handler
  48 class Identity(BaseServer):
  49
  50     def get(self, request, vimid):
  51
  52         return self.send(vimid, request.get_full_path(), request.body, "GET",
  53                          headers=originHeaders(request))
  54
  55     def post(self, request, vimid):
  56
  57         return self.send(vimid, request.get_full_path(), request.body, "POST",
  58                          headers=originHeaders(request))
  59
  60
  61 class Registry(BaseServer):
  62
  63     def post(self, request, vimid):
  64
  65         return self.send(vimid, request.get_full_path(), request.body, "POST",
  66                          headers=originHeaders(request))
  67
  68
  69 class UnRegistry(BaseServer):
  70
  71     def delete(self, request, vimid):
  72
  73         return self.send(vimid, request.get_full_path(), request.body,
  74                          "DELETE", headers=originHeaders(request))
  75
  76
  77 class Extension(BaseServer):
  78
  79     def get(self, request, vimid):
  80
  81         return self.send(vimid, request.get_full_path(), request.body, "GET",
  82                          headers=originHeaders(request))
  83
  84
  85 class VIMTypes(BaseServer):
  86
  87     def get(self, request):
  88         # Fix here unless we have plugin registry
  89         json_file = os.path.join(os.path.dirname(__file__),
  90                                  '../pub/config/provider-plugin.json')
  91         with open(json_file, "r") as f:
  92             plugins = json.load(f)
  93         ret = []
  94         for k, v in plugins.items():
  95             item = {}
  96             item["vim_type"] = v.get("vim_type")
  97             item["versions"] = [k for k in v.get('versions', {})]
  98             ret.append(item)
  99         return Response(data=ret, status=status.HTTP_200_OK)
 100
 101
 102 class CheckCapacity(BaseServer):
 103
 104     def post(self, request):
 105         try:
 106             body = json.loads(request.body)
 107         except ValueError as e:
 108             return Response(
 109                 data={'error': 'Invalidate request body %s.' % e},
 110                 status=status.HTTP_400_BAD_REQUEST)
 111
 112         ret = {"VIMs": []}
 113         newbody = {
 114             "vCPU": body.get("vCPU", 0),
 115             "Memory": body.get("Memory", 0),
 116             "Storage": body.get("Storage", 0)
 117         }
 118         for vim in body.get("VIMs", []):
 119             url = request.get_full_path().replace(
 120                 "check_vim_capacity", "%s/capacity_check" % vim)
 121             resp = self.send(vim, url, newbody, "POST")
 122             if resp.status_code != status.HTTP_200_OK:
 123                 continue
 124             try:
 125                 resp_body = json.loads(resp.body)
 126             except ValueError:
 127                 continue
 128             if not resp_body.get("result", False):
 129                 continue
 130             ret['VIMs'].append(vim)
 131         return Response(data=ret, status=status.HTTP_200_OK)
 132
 133
 134 # forward  handler
 135 class Forward(BaseServer):
 136
 137     def get(self, request, vimid):
 138
 139         return self.send(vimid, request.get_full_path(), request.body, "GET")
 140
 141     def post(self, request, vimid):
 142
 143         return self.send(vimid, request.get_full_path(), request.body, "POST",
 144                          headers=None)
 145
 146     def patch(self, request, vimid):
 147
 148         return self.send(vimid, request.get_full_path(), request.body, "PATCH",
 149                          headers=None)
 150
 151     def delete(self, request, vimid):
 152
 153         return self.send(vimid, request.get_full_path(), request.body,
 154                          "DELETE", headers=None)
 155
 156     def head(self, request, vimid):
 157
 158         return self.send(vimid, request.get_full_path(), request.body, "HEAD")
 159
 160     def put(self, request, vimid):
 161
 162         return self.send(vimid, request.get_full_path(), request.body, "PUT",
 163                          headers=None)