summaryrefslogtreecommitdiffstats
path: root/windriver/titanium_cloud/resource/views/capacity.py
blob: 6adb8785e1eb8147dae3b2802a454f79c2e223c4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
# Copyright (c) 2017-2018 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 rest_framework import status

from django.conf import settings
from common.exceptions import VimDriverNewtonException
from newton_base.util import VimDriverUtils

from keystoneauth1.exceptions import HttpError
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from common.msapi import extsys


logger = logging.getLogger(__name__)


class CapacityCheck(APIView):

    def __init__(self):
        self._logger = logger

    def post(self, request, vimid=""):
        self._logger.info("vimid, data> %s, %s" % (vimid, request.data))
        self._logger.debug("META> %s" % request.META)

        hasEnoughResource = False
        try :
            resource_demand = request.data

            #get token:
            cloud_owner, regionid = extsys.decode_vim_id(vimid)
            interface = 'public'
            service = {'service_type': 'compute',
                       'interface': interface,
                       'region_id': regionid}

            tenant_name = None
            vim = VimDriverUtils.get_vim_info(vimid)
            sess = VimDriverUtils.get_session(vim, tenant_name)

            #get limit for this tenant
            req_resouce = "/limits"
            self._logger.info("check limits> URI:%s" % req_resouce)
            resp = sess.get(req_resouce, endpoint_filter=service)
            self._logger.info("check limits> status:%s" % resp.status_code)
            content = resp.json()
            compute_limits = content['limits']['absolute']
            self._logger.debug("check limits> resp data:%s" % content)

            #get total resource of this cloud region
            try:
                req_resouce = "/os-hypervisors/statistics"
                self._logger.info("check os-hypervisors statistics> URI:%s" % req_resouce)
                resp = sess.get(req_resouce, endpoint_filter=service)
                self._logger.info("check os-hypervisors statistics> status:%s" % resp.status_code)
                content = resp.json()
                hypervisor_statistics = content['hypervisor_statistics']
                self._logger.debug("check os-hypervisors statistics> resp data:%s" % content)
            except HttpError as e:
                if e.http_status == status.HTTP_403_FORBIDDEN:
                    # Due to non administrator account cannot get hypervisor data,
                    # so construct enough resource data
                    conVCPUS = int(resource_demand['vCPU'])
                    conFreeRamMB = int(resource_demand['Memory'])
                    conFreeDiskGB = int(resource_demand['Storage'])
                    self._logger.info("Non administator forbidden to access hypervisor statistics data")
                    hypervisor_statistics = {'vcpus_used':0, 'vcpus':conVCPUS, 'free_ram_mb':conFreeRamMB, 'free_disk_gb':conFreeDiskGB}
                else:
                    # non forbiden exeption will be redirected
                    raise e

            #get storage limit for this tenant
            service['service_type'] = 'volumev2'
            req_resouce = "/limits"
            self._logger.info("check volumev2 limits> URI:%s" % req_resouce)
            resp = sess.get(req_resouce, endpoint_filter=service)
            self._logger.info("check volumev2> status:%s" % resp.status_code)
            content = resp.json()
            storage_limits = content['limits']['absolute']
            self._logger.debug("check volumev2> resp data:%s" % content)

            # compute actual available resource for this tenant
            remainVCPU = compute_limits['maxTotalCores'] - compute_limits['totalCoresUsed']
            remainHypervisorVCPU = hypervisor_statistics['vcpus'] - hypervisor_statistics['vcpus_used']

            if (remainVCPU > remainHypervisorVCPU):
                remainVCPU = remainHypervisorVCPU

            remainMEM = compute_limits['maxTotalRAMSize'] - compute_limits['totalRAMUsed']
            remainHypervisorMEM = hypervisor_statistics['free_ram_mb']
            if remainMEM > remainHypervisorMEM:
                remainMEM = remainHypervisorMEM

            remainStorage = storage_limits['maxTotalVolumeGigabytes'] - storage_limits['totalGigabytesUsed']
            remainHypervisorStorage = hypervisor_statistics['free_disk_gb']
            if (remainStorage > remainHypervisorStorage):
                remainStorage = remainHypervisorStorage

            # compare resource demanded with available
            if (int(resource_demand['vCPU']) > remainVCPU):
                hasEnoughResource = False
            elif (int(resource_demand['Memory']) > remainMEM):
                hasEnoughResource = False
            elif (int(resource_demand['Storage']) > remainStorage):
                hasEnoughResource = False
            else:
                hasEnoughResource = True

            self._logger.info("RESP with data> result:%s" % hasEnoughResource)
            return Response(data={'result': hasEnoughResource}, status=status.HTTP_200_OK)
        except VimDriverNewtonException as e:
            self._logger.error("Plugin exception> status:%s,error:%s"
                                  % (e.status_code, e.content))
            return Response(data={'result': hasEnoughResource,'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()))
            resp = e.response.json()
            resp.update({'result': hasEnoughResource})
            return Response(data=e.response.json(), status=e.http_status)
        except Exception as e:
            self._logger.error(traceback.format_exc())
            return Response(data={'result': hasEnoughResource, 'error': str(e)},
                            status=status.HTTP_500_INTERNAL_SERVER_ERROR)