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
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
|
# Copyright 2012 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.
import datetime
from oslo_log import log as logging
from trove.common import cfg
from trove.common import clients
from trove.common import exception
from trove.common.i18n import _
from trove.common import timeutils
from trove.extensions.mysql import models as mysql_models
from trove.instance import models as instance_models
from trove import rpc
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
def load_mgmt_instances(context, deleted=None, client=None,
include_clustered=None):
if not client:
client = clients.create_nova_client(
context, CONF.service_credentials.region_name
)
mgmt_servers = client.servers.list(search_opts={'all_tenants': 1})
LOG.info("Found %d servers in Nova",
len(mgmt_servers if mgmt_servers else []))
args = {}
if deleted is not None:
args['deleted'] = deleted
if not include_clustered:
args['cluster_id'] = None
db_infos = instance_models.DBInstance.find_all(**args)
instances = MgmtInstances.load_status_from_existing(context, db_infos,
mgmt_servers)
return instances
def load_mgmt_instance(cls, context, id, include_deleted):
try:
instance = instance_models.load_instance(
cls, context, id, needs_server=True,
include_deleted=include_deleted)
client = clients.create_nova_client(
context, CONF.service_credentials.region_name
)
try:
server = client.rdservers.get(instance.server_id)
except AttributeError:
server = client.servers.get(instance.server_id)
if hasattr(server, 'host'):
instance.server.host = server.host
elif hasattr(server, 'hostId'):
instance.server.host = server.hostId
if hasattr(server, 'deleted'):
instance.server.deleted = server.deleted
if hasattr(server, 'deleted_at'):
instance.server.deleted_at = server.deleted_at
if hasattr(server, 'local_id'):
instance.server.local_id = server.local_id
assert instance.server is not None
except Exception as e:
LOG.error(e)
instance = instance_models.load_instance(
cls, context, id, needs_server=False,
include_deleted=include_deleted)
return instance
class SimpleMgmtInstance(instance_models.BaseInstance):
def __init__(self, context, db_info, server, datastore_status):
super(SimpleMgmtInstance, self).__init__(context, db_info, server,
datastore_status)
@property
def status(self):
if self.deleted:
return instance_models.InstanceStatus.SHUTDOWN
return super(SimpleMgmtInstance, self).status
@property
def deleted(self):
return self.db_info.deleted
@property
def deleted_at(self):
return self.db_info.deleted_at
@classmethod
def load(cls, context, id, include_deleted=False):
return load_mgmt_instance(cls, context, id, include_deleted)
@property
def task_description(self):
return self.db_info.task_description
class DetailedMgmtInstance(SimpleMgmtInstance):
def __init__(self, *args, **kwargs):
super(DetailedMgmtInstance, self).__init__(*args, **kwargs)
self.volume = None
self.volume_used = None
self.volume_total = None
self.root_history = None
@classmethod
def load(cls, context, id, include_deleted=False):
instance = load_mgmt_instance(cls, context, id, include_deleted)
client = clients.create_cinder_client(context)
try:
instance.volume = client.volumes.get(instance.volume_id)
except Exception:
instance.volume = None
# Populate the volume_used attribute from the guest agent.
instance_models.load_guest_info(instance, context, id)
instance.root_history = mysql_models.RootHistory.load(context=context,
instance_id=id)
return instance
class MgmtInstance(instance_models.Instance):
def get_diagnostics(self):
return self.get_guest().get_diagnostics()
def stop_db(self):
return self.get_guest().stop_db()
def get_hwinfo(self):
return self.get_guest().get_hwinfo()
def rpc_ping(self):
return self.get_guest().rpc_ping()
class MgmtInstances(instance_models.Instances):
@staticmethod
def load_status_from_existing(context, db_infos, servers):
def load_instance(context, db, status, server=None):
return SimpleMgmtInstance(context, db, server, status)
if context is None:
raise TypeError(_("Argument context not defined."))
find_server = instance_models.create_server_list_matcher(servers)
instances = instance_models.Instances._load_servers_status(
load_instance, context, db_infos, find_server)
_load_servers(instances, find_server)
return instances
def _load_servers(instances, find_server):
for instance in instances:
db = instance.db_info
instance.server = None
try:
server = find_server(db.id, db.compute_instance_id)
instance.server = server
except Exception as ex:
LOG.exception(ex)
return instances
def publish_exist_events(transformer, admin_context):
notifier = rpc.get_notifier("taskmanager")
notifications = transformer()
# clear out admin_context.auth_token so it does not get logged
admin_context.auth_token = None
for notification in notifications:
notifier.info(admin_context, "trove.instance.exists", notification)
class NotificationTransformer(object):
def __init__(self, **kwargs):
pass
@staticmethod
def _get_audit_period():
now = timeutils.utcnow()
start_time = now - datetime.timedelta(
seconds=CONF.exists_notification_interval)
audit_start = timeutils.isotime(start_time)
audit_end = timeutils.isotime(now)
return audit_start, audit_end
def _get_service_id(self, datastore_manager, id_map):
if datastore_manager in id_map:
datastore_manager_id = id_map[datastore_manager]
else:
datastore_manager_id = cfg.UNKNOWN_SERVICE_ID
LOG.error("Datastore ID for Manager (%s) is not configured",
datastore_manager)
return datastore_manager_id
def transform_instance(self, instance, audit_start, audit_end):
payload = {
'audit_period_beginning': audit_start,
'audit_period_ending': audit_end,
'created_at': instance.created,
'display_name': instance.name,
'instance_id': instance.id,
'instance_name': instance.name,
'instance_type_id': instance.flavor_id,
'launched_at': instance.created,
'nova_instance_id': instance.server_id,
'region': CONF.region,
'state_description': instance.status.lower(),
'state': instance.status.lower(),
'tenant_id': instance.tenant_id
}
payload['service_id'] = self._get_service_id(
instance.datastore_version.manager, CONF.notification_service_id)
return payload
def __call__(self):
audit_start, audit_end = NotificationTransformer._get_audit_period()
messages = []
db_infos = instance_models.DBInstance.find_all(deleted=False)
for db_info in db_infos:
try:
service_status = instance_models.InstanceServiceStatus.find_by(
instance_id=db_info.id)
except exception.ModelNotFoundError:
# There is a small window of opportunity during when the db
# resource for an instance exists, but no InstanceServiceStatus
# for it has yet been created. We skip sending the notification
# message for all such instances. These instance are too new
# and will get picked up the next round of notifications.
LOG.debug("InstanceServiceStatus not found for %s. "
"Will wait to send notification.", db_info.id)
continue
instance = SimpleMgmtInstance(None, db_info, None, service_status)
message = self.transform_instance(instance, audit_start, audit_end)
messages.append(message)
return messages
class NovaNotificationTransformer(NotificationTransformer):
def __init__(self, **kwargs):
super(NovaNotificationTransformer, self).__init__(**kwargs)
self.context = kwargs['context']
self.nova_client = clients.create_admin_nova_client(self.context)
self._flavor_cache = {}
def _lookup_flavor(self, flavor_id):
if flavor_id in self._flavor_cache:
LOG.debug("Flavor cache hit for %s", flavor_id)
return self._flavor_cache[flavor_id]
# fetch flavor resource from nova
LOG.info("Flavor cache miss for %s", flavor_id)
flavor = self.nova_client.flavors.get(flavor_id)
self._flavor_cache[flavor_id] = flavor.name if flavor else 'unknown'
return self._flavor_cache[flavor_id]
def __call__(self):
audit_start, audit_end = NotificationTransformer._get_audit_period()
instances = load_mgmt_instances(self.context, deleted=False,
client=self.nova_client)
messages = []
for instance in filter(
lambda inst: inst.status != 'SHUTDOWN' and inst.server,
instances):
message = {
'instance_type': self._lookup_flavor(instance.flavor_id),
'user_id': instance.server.user_id
}
message.update(self.transform_instance(instance,
audit_start,
audit_end))
messages.append(message)
return messages
|