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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
# Copyright (c) 2017-2018 VMware, 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.
import json
import logging
from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import APIView
from vio.pub.exceptions import VimDriverVioException
from vio.pub.msapi import extsys
from vio.pub.vim.vimapi.nova import OperateHypervisor
from vio.pub.vim.vimapi.nova import OperateLimits
from vio.pub.vim.vimapi.nova import OperateNova
from cinderclient import client
logger = logging.getLogger(__name__)
class CapacityCheck(APIView):
def _check_capacity(self, hypervisor, requirement):
avail_vcpu = hypervisor.get("vcpus") - hypervisor.get("vcpus_used")
avail_mem = (hypervisor.get("memory_size") - hypervisor.get(
"memory_used"))/1024
avail_disk = hypervisor.get("local_disk_size") - hypervisor.get(
"local_disk_used")
req_vcpu = requirement.get("vCPU")
req_mem = requirement.get("Memory")
req_disk = requirement.get("Storage")
if avail_vcpu < req_vcpu:
return False
if avail_mem < req_mem:
return False
if avail_disk < req_disk:
return False
return True
def _check_nova_limits(self, limits, requirement):
avail_vcpu = (
limits.absolute.total_cores - limits.absolute.total_cores_used)
avail_mem = (
limits.absolute.total_ram - limits.absolute.total_ram_used)/1024
req_vcpu = requirement.get("vCPU")
req_mem = requirement.get("Memory")
if avail_vcpu >= 0 and avail_vcpu < req_vcpu:
return False
if avail_mem >= 0 and avail_mem < req_mem:
return False
return True
def _check_cinder_limits(self, limits, requirement):
absolute = limits['absolute']
avail_disk = (absolute.get(
"maxTotalVolumeGigabytes") - absolute.get("totalGigabytesUsed"))
req_disk = requirement.get("Storage")
if avail_disk < req_disk:
return False
return True
def _post_handler(self, request, vimid):
try:
requirement = json.loads(request.body)
except ValueError as ex:
return {'error': str(ex),
"status_code": status.HTTP_400_BAD_REQUEST}
try:
vim_info = extsys.get_vim_by_id(vimid)
except VimDriverVioException as e:
return {'error': str(e), "status_code": e.status_code}
auth_info = {
"username": vim_info['userName'],
"password": vim_info['password'],
"url": vim_info['url'],
"project_name": vim_info['tenant']
}
# check nova limits
servers_op = OperateLimits.OperateLimits()
try:
nova_limits = servers_op.get_limits(auth_info, None)
except Exception as e:
logger.exception("get nova limits error %(e)s", {"e": e})
return {'error': str(e), "status_code": e.status_code}
if not self._check_nova_limits(nova_limits, requirement):
return {'result': False, "status_code": status.HTTP_200_OK}
# check cinder limits
cinder = client.Client(
"3", auth_info['username'], auth_info['password'],
auth_info['project_name'], auth_info['url'], insecure=True)
try:
limits = cinder.limits.get().to_dict()
except Exception as e:
logger.exception("get cinder limits error %(e)s", {"e": e})
return {'error': str(e), "status_code": e.status_code}
if not self._check_cinder_limits(limits, requirement):
return {'result': False, "status_code": status.HTTP_200_OK}
# Get Availability zones info
nova_op = OperateNova.OperateAZ()
try:
azs = nova_op.list_availability_zones(auth_info, details=True)
except Exception as e:
logger.exception("get availability_zones error %(e)s", {"e": e})
return {'error': str(e), "status_code": e.status_code}
availability_zones = []
for az in azs:
if az.name == "internal":
continue
availability_zones.append({
"availability-zone-name": az.name,
"hosts": az.hosts,
"vCPUTotal": 0,
"vCPUAvail": 0,
"MemoryTotal": 0,
"MemoryAvail": 0,
"StorageTotal": 0,
"StorageAvail": 0,
})
# check hypervisor resources
hypervisor_op = OperateHypervisor.OperateHypervisor()
try:
hypervisors = hypervisor_op.list_hypervisors(auth_info)
except Exception as e:
logger.exception("get hypervisors error %(e)s", {"e": e})
return {'error': str(e), "status_code": e.status_code}
ret = {'result': False, "status_code": status.HTTP_200_OK}
# import ipdb; ipdb.set_trace()
for hypervisor in hypervisors:
if hypervisor.status != "enabled":
continue
hyper = hypervisor_op.get_hypervisor(auth_info, hypervisor.id)
hyper_dict = hyper.to_dict()
for az in availability_zones:
if az['hosts'].get(hyper_dict["service_details"]['host']):
az['vCPUTotal'] += hyper_dict["vcpus"]
az['vCPUAvail'] += hyper_dict["vcpus"] - hyper_dict[
"vcpus_used"]
az['MemoryTotal'] += hyper_dict["memory_size"]
az['MemoryAvail'] += hyper_dict["memory_free"]
az['StorageTotal'] += hyper_dict["local_disk_size"]
az['StorageAvail'] += hyper_dict["local_disk_free"]
if self._check_capacity(hyper_dict, requirement):
ret["result"] = True
if ret["result"]:
for az in availability_zones:
del az["hosts"]
ret["AZs"] = availability_zones
return ret
def post(self, request, vimid):
ret = self._post_handler(request, vimid)
status_code = ret["status_code"]
del ret["status_code"]
if ret.get("AZs"):
del ret["AZs"]
return Response(data=ret, status=status_code)
class CapacityCheckV1(CapacityCheck):
def post(self, request, cloud_owner, cloud_region):
# import ipdb; ipdb.set_trace()
vimid = cloud_owner + "_" + cloud_region
ret = self._post_handler(request, vimid)
status_code = ret["status_code"]
del ret["status_code"]
return Response(data=ret, status=status_code)
|
