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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
# Copyright 2016 Cisco Systems, Inc. All rights reserved.
#
# 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 time
import traceback
from glanceclient import exc as glance_exception
try:
from glanceclient.openstack.common.apiclient.exceptions import NotFound as GlanceImageNotFound
except ImportError:
from glanceclient.v1.apiclient.exceptions import NotFound as GlanceImageNotFound
import keystoneauth1
import novaclient
from log import LOG
class Compute(object):
def __init__(self, nova_client, glance_client, config):
self.novaclient = nova_client
self.glance_client = glance_client
self.config = config
def find_image(self, image_name):
try:
return next(self.glance_client.images.list(filters={'name': image_name}), None)
except (novaclient.exceptions.NotFound, keystoneauth1.exceptions.http.NotFound,
GlanceImageNotFound):
pass
return None
def upload_image_via_url(self, final_image_name, image_file, retry_count=60):
"""Directly upload image to Nova via URL if image is not present."""
retry = 0
try:
# check image is file/url based.
with open(image_file) as f_image:
img = self.glance_client.images.create(name=str(final_image_name),
disk_format="qcow2",
container_format="bare",
visibility="public")
self.glance_client.images.upload(img.id, image_data=f_image)
# Check for the image in glance
while img.status in ['queued', 'saving'] and retry < retry_count:
img = self.glance_client.images.get(img.id)
retry += 1
LOG.debug("Image not yet active, retrying %s of %s...", retry, retry_count)
time.sleep(self.config.generic_poll_sec)
if img.status != 'active':
LOG.error("Image uploaded but too long to get to active state")
raise Exception("Image update active state timeout")
except glance_exception.HTTPForbidden:
LOG.error("Cannot upload image without admin access. Please make "
"sure the image is uploaded and is either public or owned by you.")
return False
except IOError:
# catch the exception for file based errors.
LOG.error("Failed while uploading the image. Please make sure the "
"image at the specified location %s is correct.", image_file)
return False
except keystoneauth1.exceptions.http.NotFound as exc:
LOG.error("Authentication error while uploading the image: %s", str(exc))
return False
except Exception:
LOG.error(traceback.format_exc())
LOG.error("Failed to upload image %s.", image_file)
return False
return True
def delete_image(self, img_name):
try:
LOG.log("Deleting image %s...", img_name)
img = self.find_image(image_name=img_name)
self.glance_client.images.delete(img.id)
except Exception:
LOG.error("Failed to delete the image %s.", img_name)
return False
return True
# Create a server instance with name vmname
# and check that it gets into the ACTIVE state
def create_server(self, vmname, image, flavor, key_name,
nic, sec_group, avail_zone=None, user_data=None,
config_drive=None, files=None):
if sec_group:
security_groups = [sec_group['id']]
else:
security_groups = None
# Also attach the created security group for the test
instance = self.novaclient.servers.create(name=vmname,
image=image,
flavor=flavor,
key_name=key_name,
nics=nic,
availability_zone=avail_zone,
userdata=user_data,
config_drive=config_drive,
files=files,
security_groups=security_groups)
return instance
def poll_server(self, instance):
return self.novaclient.servers.get(instance.id)
def get_server_list(self):
servers_list = self.novaclient.servers.list()
return servers_list
def delete_server(self, server):
self.novaclient.servers.delete(server)
def find_flavor(self, flavor_type):
try:
flavor = self.novaclient.flavors.find(name=flavor_type)
return flavor
except Exception:
return None
def create_flavor(self, name, ram, vcpus, disk, ephemeral=0):
return self.novaclient.flavors.create(name=name, ram=ram, vcpus=vcpus, disk=disk,
ephemeral=ephemeral)
def normalize_az_host(self, az, host):
if not az:
az = self.config.availability_zone
return az + ':' + host
def auto_fill_az(self, host_list, host):
"""Auto fill az:host.
no az provided, if there is a host list we can auto-fill the az
else we use the configured az if available
else we return an error
"""
if host_list:
for hyp in host_list:
if hyp.host == host:
return self.normalize_az_host(hyp.zone, host)
# no match on host
LOG.error('Passed host name does not exist: %s', host)
return None
if self.config.availability_zone:
return self.normalize_az_host(None, host)
LOG.error('--hypervisor passed without an az and no az configured')
return None
def sanitize_az_host(self, host_list, az_host):
"""Sanitize the az:host string.
host_list: list of hosts as retrieved from openstack (can be empty)
az_host: either a host or a az:host string
if a host, will check host is in the list, find the corresponding az and
return az:host
if az:host is passed will check the host is in the list and az matches
if host_list is empty, will return the configured az if there is no
az passed
"""
if ':' in az_host:
# no host_list, return as is (no check)
if not host_list:
return az_host
# if there is a host_list, extract and verify the az and host
az_host_list = az_host.split(':')
zone = az_host_list[0]
host = az_host_list[1]
for hyp in host_list:
if hyp.host == host:
if hyp.zone == zone:
# matches
return az_host
# else continue - another zone with same host name?
# no match
LOG.error('No match for availability zone and host %s', az_host)
return None
else:
return self.auto_fill_az(host_list, az_host)
#
# Return a list of 0, 1 or 2 az:host
#
# The list is computed as follows:
# The list of all hosts is retrieved first from openstack
# if this fails, checks and az auto-fill are disabled
#
# If the user provides a configured az name (config.availability_zone)
# up to the first 2 hosts from the list that match the az are returned
#
# If the user did not configure an az name
# up to the first 2 hosts from the list are returned
# Possible return values:
# [ az ]
# [ az:hyp ]
# [ az1:hyp1, az2:hyp2 ]
# [] if an error occurred (error message printed to console)
#
def get_enabled_az_host_list(self, required_count=1):
"""Check which hypervisors are enabled and on which compute nodes they are running.
Pick up to the required count of hosts (can be less or zero)
:param required_count: count of compute-nodes to return
:return: list of enabled available compute nodes
"""
host_list = []
hypervisor_list = []
try:
hypervisor_list = self.novaclient.hypervisors.list()
host_list = self.novaclient.services.list()
except novaclient.exceptions.Forbidden:
LOG.warning('Operation Forbidden: could not retrieve list of hypervisors'
' (likely no permission)')
hypervisor_list = [h for h in hypervisor_list if h.status == 'enabled' and h.state == 'up']
if self.config.availability_zone:
host_list = [h for h in host_list if h.zone == self.config.availability_zone]
if self.config.compute_nodes:
host_list = [h for h in host_list if h.host in self.config.compute_nodes]
hosts = [h.hypervisor_hostname for h in hypervisor_list]
host_list = [h for h in host_list if h.host in hosts]
avail_list = []
for host in host_list:
candidate = self.normalize_az_host(host.zone, host.host)
if candidate:
avail_list.append(candidate)
if len(avail_list) == required_count:
return avail_list
return avail_list
def get_hypervisor(self, hyper_name):
# can raise novaclient.exceptions.NotFound
# first get the id from name
hyper = self.novaclient.hypervisors.search(hyper_name)[0]
# get full hypervisor object
return self.novaclient.hypervisors.get(hyper.id)
|
