/
member.py
379 lines (315 loc) · 16.4 KB
/
member.py
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
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
# Copyright 2014 Rackspace
# Copyright 2016 Blue Box, an IBM Company
#
# 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 oslo_db import exception as odb_exceptions
from oslo_log import log as logging
from oslo_utils import excutils
import pecan
from wsme import types as wtypes
from wsmeext import pecan as wsme_pecan
from octavia.api.drivers import data_models as driver_dm
from octavia.api.drivers import driver_factory
from octavia.api.drivers import utils as driver_utils
from octavia.api.v2.controllers import base
from octavia.api.v2.types import member as member_types
from octavia.common import constants
from octavia.common import data_models
from octavia.common import exceptions
import octavia.common.validate as validate
from octavia.db import api as db_api
from octavia.db import prepare as db_prepare
LOG = logging.getLogger(__name__)
class MemberController(base.BaseController):
RBAC_TYPE = constants.RBAC_MEMBER
def __init__(self, pool_id):
super(MemberController, self).__init__()
self.pool_id = pool_id
@wsme_pecan.wsexpose(member_types.MemberRootResponse, wtypes.text,
[wtypes.text], ignore_extra_args=True)
def get(self, id, fields=None):
"""Gets a single pool member's details."""
context = pecan.request.context.get('octavia_context')
db_member = self._get_db_member(context.session, id,
show_deleted=False)
self._auth_validate_action(context, db_member.project_id,
constants.RBAC_GET_ONE)
result = self._convert_db_to_type(
db_member, member_types.MemberResponse)
if fields is not None:
result = self._filter_fields([result], fields)[0]
return member_types.MemberRootResponse(member=result)
@wsme_pecan.wsexpose(member_types.MembersRootResponse, [wtypes.text],
ignore_extra_args=True)
def get_all(self, fields=None):
"""Lists all pool members of a pool."""
pcontext = pecan.request.context
context = pcontext.get('octavia_context')
pool = self._get_db_pool(context.session, self.pool_id,
show_deleted=False)
self._auth_validate_action(context, pool.project_id,
constants.RBAC_GET_ALL)
db_members, links = self.repositories.member.get_all(
context.session, show_deleted=False,
pool_id=self.pool_id,
pagination_helper=pcontext.get(constants.PAGINATION_HELPER))
result = self._convert_db_to_type(
db_members, [member_types.MemberResponse])
if fields is not None:
result = self._filter_fields(result, fields)
return member_types.MembersRootResponse(
members=result, members_links=links)
def _get_affected_listener_ids(self, session, member=None):
"""Gets a list of all listeners this request potentially affects."""
if member:
listener_ids = [l.id for l in member.pool.listeners]
else:
pool = self._get_db_pool(session, self.pool_id)
listener_ids = [l.id for l in pool.listeners]
return listener_ids
def _test_lb_and_listener_and_pool_statuses(self, session, member=None):
"""Verify load balancer is in a mutable state."""
# We need to verify that any listeners referencing this member's
# pool are also mutable
pool = self._get_db_pool(session, self.pool_id)
load_balancer_id = pool.load_balancer_id
if not self.repositories.test_and_set_lb_and_listeners_prov_status(
session, load_balancer_id,
constants.PENDING_UPDATE, constants.PENDING_UPDATE,
listener_ids=self._get_affected_listener_ids(session, member),
pool_id=self.pool_id):
LOG.info("Member cannot be created or modified because the "
"Load Balancer is in an immutable state")
raise exceptions.ImmutableObject(resource='Load Balancer',
id=load_balancer_id)
def _validate_create_member(self, lock_session, member_dict):
"""Validate creating member on pool."""
try:
return self.repositories.member.create(lock_session, **member_dict)
except odb_exceptions.DBDuplicateEntry as de:
column_list = ['pool_id', 'ip_address', 'protocol_port']
constraint_list = ['uq_member_pool_id_address_protocol_port']
if ['id'] == de.columns:
raise exceptions.IDAlreadyExists()
elif (set(column_list) == set(de.columns) or
set(constraint_list) == set(de.columns)):
raise exceptions.DuplicateMemberEntry(
ip_address=member_dict.get('ip_address'),
port=member_dict.get('protocol_port'))
except odb_exceptions.DBError:
# TODO(blogan): will have to do separate validation protocol
# before creation or update since the exception messages
# do not give any information as to what constraint failed
raise exceptions.InvalidOption(value='', option='')
@wsme_pecan.wsexpose(member_types.MemberRootResponse,
body=member_types.MemberRootPOST, status_code=201)
def post(self, member_):
"""Creates a pool member on a pool."""
member = member_.member
context = pecan.request.context.get('octavia_context')
validate.ip_not_reserved(member.address)
# Validate member subnet
if member.subnet_id and not validate.subnet_exists(member.subnet_id):
raise exceptions.NotFound(resource='Subnet',
id=member.subnet_id)
pool = self.repositories.pool.get(context.session, id=self.pool_id)
member.project_id, provider = self._get_lb_project_id_provider(
context.session, pool.load_balancer_id)
self._auth_validate_action(context, member.project_id,
constants.RBAC_POST)
# Load the driver early as it also provides validation
driver = driver_factory.get_driver(provider)
lock_session = db_api.get_session(autocommit=False)
try:
if self.repositories.check_quota_met(
context.session,
lock_session,
data_models.Member,
member.project_id):
raise exceptions.QuotaException(
resource=data_models.Member._name())
member_dict = db_prepare.create_member(member.to_dict(
render_unsets=True), self.pool_id, bool(pool.health_monitor))
self._test_lb_and_listener_and_pool_statuses(lock_session)
db_member = self._validate_create_member(lock_session, member_dict)
# Prepare the data for the driver data model
provider_member = (
driver_utils.db_member_to_provider_member(db_member))
# Dispatch to the driver
LOG.info("Sending create Member %s to provider %s",
db_member.id, driver.name)
driver_utils.call_provider(
driver.name, driver.member_create, provider_member)
lock_session.commit()
except Exception:
with excutils.save_and_reraise_exception():
lock_session.rollback()
db_member = self._get_db_member(context.session, db_member.id)
result = self._convert_db_to_type(db_member,
member_types.MemberResponse)
return member_types.MemberRootResponse(member=result)
def _graph_create(self, lock_session, member_dict):
pool = self.repositories.pool.get(lock_session, id=self.pool_id)
member_dict = db_prepare.create_member(
member_dict, self.pool_id, bool(pool.health_monitor))
db_member = self._validate_create_member(lock_session, member_dict)
return db_member
@wsme_pecan.wsexpose(member_types.MemberRootResponse,
wtypes.text, body=member_types.MemberRootPUT,
status_code=200)
def put(self, id, member_):
"""Updates a pool member."""
member = member_.member
context = pecan.request.context.get('octavia_context')
db_member = self._get_db_member(context.session, id,
show_deleted=False)
pool = self.repositories.pool.get(context.session,
id=db_member.pool_id)
project_id, provider = self._get_lb_project_id_provider(
context.session, pool.load_balancer_id)
self._auth_validate_action(context, project_id, constants.RBAC_PUT)
# Load the driver early as it also provides validation
driver = driver_factory.get_driver(provider)
with db_api.get_lock_session() as lock_session:
self._test_lb_and_listener_and_pool_statuses(lock_session,
member=db_member)
# Prepare the data for the driver data model
member_dict = member.to_dict(render_unsets=False)
member_dict['id'] = id
provider_member_dict = (
driver_utils.member_dict_to_provider_dict(member_dict))
# Also prepare the baseline object data
old_provider_member = driver_utils.db_member_to_provider_member(
db_member)
# Dispatch to the driver
LOG.info("Sending update Member %s to provider %s", id,
driver.name)
driver_utils.call_provider(
driver.name, driver.member_update,
old_provider_member,
driver_dm.Member.from_dict(provider_member_dict))
# Update the database to reflect what the driver just accepted
member.provisioning_status = constants.PENDING_UPDATE
db_member_dict = member.to_dict(render_unsets=False)
self.repositories.member.update(lock_session, id, **db_member_dict)
# Force SQL alchemy to query the DB, otherwise we get inconsistent
# results
context.session.expire_all()
db_member = self._get_db_member(context.session, id)
result = self._convert_db_to_type(db_member,
member_types.MemberResponse)
return member_types.MemberRootResponse(member=result)
@wsme_pecan.wsexpose(None, wtypes.text, status_code=204)
def delete(self, id):
"""Deletes a pool member."""
context = pecan.request.context.get('octavia_context')
db_member = self._get_db_member(context.session, id,
show_deleted=False)
pool = self.repositories.pool.get(context.session,
id=db_member.pool_id)
project_id, provider = self._get_lb_project_id_provider(
context.session, pool.load_balancer_id)
self._auth_validate_action(context, project_id, constants.RBAC_DELETE)
# Load the driver early as it also provides validation
driver = driver_factory.get_driver(provider)
with db_api.get_lock_session() as lock_session:
self._test_lb_and_listener_and_pool_statuses(lock_session,
member=db_member)
self.repositories.member.update(
lock_session, db_member.id,
provisioning_status=constants.PENDING_DELETE)
LOG.info("Sending delete Member %s to provider %s", id,
driver.name)
provider_member = (
driver_utils.db_member_to_provider_member(db_member))
driver_utils.call_provider(driver.name, driver.member_delete,
provider_member)
class MembersController(MemberController):
def __init__(self, pool_id):
super(MembersController, self).__init__(pool_id)
@wsme_pecan.wsexpose(None, wtypes.text,
body=member_types.MembersRootPUT, status_code=202)
def put(self, members_):
"""Updates all members."""
members = members_.members
context = pecan.request.context.get('octavia_context')
db_pool = self._get_db_pool(context.session, self.pool_id)
old_members = db_pool.members
project_id, provider = self._get_lb_project_id_provider(
context.session, db_pool.load_balancer_id)
# Check POST+PUT+DELETE since this operation is all of 'CUD'
self._auth_validate_action(context, project_id, constants.RBAC_POST)
self._auth_validate_action(context, project_id, constants.RBAC_PUT)
self._auth_validate_action(context, project_id, constants.RBAC_DELETE)
# Validate member subnets
for member in members:
if member.subnet_id and not validate.subnet_exists(
member.subnet_id):
raise exceptions.NotFound(resource='Subnet',
id=member.subnet_id)
# Load the driver early as it also provides validation
driver = driver_factory.get_driver(provider)
with db_api.get_lock_session() as lock_session:
self._test_lb_and_listener_and_pool_statuses(lock_session)
member_count_diff = len(members) - len(old_members)
if member_count_diff > 0 and self.repositories.check_quota_met(
context.session, lock_session, data_models.Member,
db_pool.project_id, count=member_count_diff):
raise exceptions.QuotaException(
resource=data_models.Member._name())
old_member_uniques = {
(m.ip_address, m.protocol_port): m.id for m in old_members}
new_member_uniques = [
(m.address, m.protocol_port) for m in members]
# Find members that are brand new or updated
new_members = []
updated_members = []
for m in members:
if (m.address, m.protocol_port) not in old_member_uniques:
new_members.append(m)
else:
m.id = old_member_uniques[(m.address, m.protocol_port)]
updated_members.append(m)
# Find members that are deleted
deleted_members = []
for m in old_members:
if (m.ip_address, m.protocol_port) not in new_member_uniques:
deleted_members.append(m)
provider_members = []
# Create new members
for m in new_members:
m = m.to_dict(render_unsets=False)
m['project_id'] = db_pool.project_id
created_member = self._graph_create(lock_session, m)
provider_member = driver_utils.db_member_to_provider_member(
created_member)
provider_members.append(provider_member)
# Update old members
for m in updated_members:
m.provisioning_status = constants.PENDING_UPDATE
db_member_dict = m.to_dict(render_unsets=False)
db_member_dict.pop('id')
self.repositories.member.update(
lock_session, m.id, **db_member_dict)
provider_members.append(
driver_utils.db_member_to_provider_member(m))
# Delete old members
for m in deleted_members:
self.repositories.member.update(
lock_session, m.id,
provisioning_status=constants.PENDING_DELETE)
# Dispatch to the driver
LOG.info("Sending Pool %s batch member update to provider %s",
db_pool.id, driver.name)
driver_utils.call_provider(
driver.name, driver.member_batch_update, provider_members)