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
|
# Copyright 2013 OpenStack Foundation
#
# 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.
from webob import exc
from nova.api.openstack import common
from nova.api.openstack import extensions
from nova.api.openstack import wsgi
from nova import compute
from nova import exception
from nova.openstack.common import log as logging
from nova.openstack.common import strutils
from nova import utils
LOG = logging.getLogger(__name__)
ALIAS = "os-evacuate"
authorize = extensions.extension_authorizer('compute', 'v3:' + ALIAS)
class EvacuateController(wsgi.Controller):
def __init__(self, *args, **kwargs):
super(EvacuateController, self).__init__(*args, **kwargs)
self.compute_api = compute.API()
@wsgi.action('evacuate')
def _evacuate(self, req, id, body):
"""
Permit admins to evacuate a server from a failed host
to a new one.
"""
context = req.environ["nova.context"]
authorize(context)
try:
if len(body) != 1:
raise exc.HTTPBadRequest(_("Malformed request body"))
evacuate_body = body["evacuate"]
host = evacuate_body["host"]
on_shared_storage = strutils.bool_from_string(
evacuate_body["onSharedStorage"])
password = None
if 'adminPass' in evacuate_body:
# check that if requested to evacuate server on shared storage
# password not specified
if on_shared_storage:
msg = _("admin password can't be changed on existing disk")
raise exc.HTTPBadRequest(explanation=msg)
password = evacuate_body['adminPass']
elif not on_shared_storage:
password = utils.generate_password()
except (TypeError, KeyError):
msg = _("host and onSharedStorage must be specified.")
raise exc.HTTPBadRequest(explanation=msg)
try:
instance = self.compute_api.get(context, id)
self.compute_api.evacuate(context, instance, host,
on_shared_storage, password)
except exception.InstanceInvalidState as state_error:
common.raise_http_conflict_for_instance_invalid_state(state_error,
'evacuate')
except Exception as e:
msg = _("Error in evacuate, %s") % e
LOG.exception(msg, instance=instance)
raise exc.HTTPBadRequest(explanation=msg)
if password:
return {'adminPass': password}
class Evacuate(extensions.V3APIExtensionBase):
"""Enables server evacuation."""
name = "Evacuate"
alias = ALIAS
namespace = "http://docs.openstack.org/compute/ext/evacuate/api/v3"
version = 1
def get_resources(self):
return []
def get_controller_extensions(self):
controller = EvacuateController()
extension = extensions.ControllerExtension(self, 'servers', controller)
return [extension]
|
