openstack/deb-manila
Code Issues Proposed changes

Fix update_access concurrency issue

Browse Source 
With the new update_access interface, concurrent requests to allow
access might get lost when the driver takes a long time to process
the new rules. This patch fixes this issue by verifying for the
existence of new unprocessed rules at the end of the update_access
method.

APIImpact
access_allow action on shares with access_rules_status 'out_of_sync'
was previously disallowed with HTTPBadRequest. Now, the action is
disallowed only for shares with access_rules_status set to 'error'.

Change-Id: I0f863cbae4d8af0660114161deda7bf7aa60d71d
Closes-bug: #1550295
This commit is contained in:
tpsilva 2016-03-03 09:20:58 -03:00
parent f5a537f039
commit 70f59f7b7c
8 changed files with 179 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
manila/common/constants.py
View File

@ -23,6 +23,8 @@ STATUS_AVAILABLE = 'available'
STATUS_ACTIVE = 'active'
STATUS_INACTIVE = 'inactive'
STATUS_OUT_OF_SYNC = 'out_of_sync'
STATUS_UPDATING = 'updating'
STATUS_UPDATING_MULTIPLE = 'updating_multiple'
STATUS_MANAGING = 'manage_starting'
STATUS_MANAGE_ERROR = 'manage_error'
STATUS_UNMANAGING = 'unmanage_starting'
@ -79,6 +81,11 @@ TRANSITIONAL_STATUSES = (
STATUS_MIGRATING, STATUS_MIGRATING_TO,
)
UPDATING_RULES_STATUSES = (
STATUS_UPDATING,
STATUS_UPDATING_MULTIPLE,
)
SUPPORTED_SHARE_PROTOCOLS = (
'NFS', 'CIFS', 'GLUSTERFS', 'HDFS', 'CEPHFS')

11
manila/db/sqlalchemy/models.py
View File

@ -370,11 +370,15 @@ class ShareInstance(BASE, ManilaBase):
ACCESS_STATUS_PRIORITIES = {
constants.STATUS_ACTIVE: 0,
constants.STATUS_OUT_OF_SYNC: 1,
constants.STATUS_ERROR: 2,
constants.STATUS_UPDATING: 2,
constants.STATUS_UPDATING_MULTIPLE: 3,
constants.STATUS_ERROR: 4,
}
access_rules_status = Column(Enum(constants.STATUS_ACTIVE,
constants.STATUS_OUT_OF_SYNC,
constants.STATUS_UPDATING,
constants.STATUS_UPDATING_MULTIPLE,
constants.STATUS_ERROR),
default=constants.STATUS_ACTIVE)
@ -554,7 +558,10 @@ class ShareAccessMapping(BASE, ManilaBase):
instances = [im.instance for im in self.instance_mappings]
access_rules_status = get_access_rules_status(instances)
if access_rules_status == constants.STATUS_OUT_OF_SYNC:
if access_rules_status in (
constants.STATUS_OUT_OF_SYNC,
constants.STATUS_UPDATING,
constants.STATUS_UPDATING_MULTIPLE):
return constants.STATUS_NEW
else:
return access_rules_status

28
manila/share/access.py
View File

@ -41,6 +41,12 @@ class ShareInstanceAccess(object):
be deleted.
:param share_server: Share server model or None
"""
self.db.share_instance_update_access_status(
context,
share_instance_id,
constants.STATUS_UPDATING
)
share_instance = self.db.share_instance_get(
context, share_instance_id, with_share_data=True)
@ -56,8 +62,8 @@ class ShareInstanceAccess(object):
context, share_instance['id'])
rules = []
else:
rules = self.db.share_access_get_all_for_share(
context, share_instance['share_id'])
rules = self.db.share_access_get_all_for_instance(
context, share_instance['id'])
if delete_rules:
delete_ids = [rule['id'] for rule in delete_rules]
rules = list(filter(lambda r: r['id'] not in delete_ids,
@ -98,6 +104,13 @@ class ShareInstanceAccess(object):
self._remove_access_rules(context, delete_rules, share_instance['id'])
share_instance = self.db.share_instance_get(context, share_instance_id,
with_share_data=True)
if self._check_needs_refresh(context, rules, share_instance):
self.update_access_rules(context, share_instance_id,
share_server=share_server)
else:
self.db.share_instance_update_access_status(
context,
share_instance['id'],
@ -108,6 +121,17 @@ class ShareInstanceAccess(object):
"share instance: %s"),
share_instance['id'])
def _check_needs_refresh(self, context, rules, share_instance):
rule_ids = set([rule['id'] for rule in rules])
queried_rules = self.db.share_access_get_all_for_instance(
context, share_instance['id'])
queried_ids = set([rule['id'] for rule in queried_rules])
access_rules_status = share_instance['access_rules_status']
return (access_rules_status == constants.STATUS_UPDATING_MULTIPLE or
rule_ids != queried_ids)
def _update_access_fallback(self, add_rules, context, delete_rules,
remove_rules, share_instance, share_server):
for rule in add_rules:

32
manila/share/api.py
View File

@ -1122,21 +1122,30 @@ class API(base.Base):
msg = _("Invalid share instance host: %s") % share_instance['host']
raise exception.InvalidShareInstance(reason=msg)
if share_instance['access_rules_status'] != constants.STATUS_ACTIVE:
status = share_instance['access_rules_status']
msg = _("Share instance should have '%(valid_status)s' "
"access rules status, but current status is: "
"%(status)s.") % {
'valid_status': constants.STATUS_ACTIVE,
if status == constants.STATUS_ERROR:
values = {
'instance_id': share_instance['id'],
'status': status,
'valid_status': constants.STATUS_ACTIVE
}
msg = _("Share instance %(instance_id)s access rules status is: "
"%(status)s. Please remove any incorrect rules to get it "
"back to %(valid_status)s.") % values
raise exception.InvalidShareInstance(reason=msg)
else:
if status == constants.STATUS_ACTIVE:
self.db.share_instance_update_access_status(
context, share_instance['id'],
constants.STATUS_OUT_OF_SYNC
)
elif status == constants.STATUS_UPDATING:
self.db.share_instance_update_access_status(
context, share_instance['id'],
constants.STATUS_UPDATING_MULTIPLE
)
self.share_rpcapi.allow_access(context, share_instance, access)
@ -1168,10 +1177,17 @@ class API(base.Base):
msg = _("Invalid share instance host: %s") % share_instance['host']
raise exception.InvalidShareInstance(reason=msg)
if share_instance['access_rules_status'] != constants.STATUS_ERROR:
status = share_instance['access_rules_status']
if status != constants.STATUS_ERROR:
new_status = constants.STATUS_OUT_OF_SYNC
if status in constants.UPDATING_RULES_STATUSES:
new_status = constants.STATUS_UPDATING_MULTIPLE
self.db.share_instance_update_access_status(
context, share_instance['id'],
constants.STATUS_OUT_OF_SYNC)
new_status)
self.share_rpcapi.deny_access(context, share_instance, access)

7
manila/share/manager.py
View File

@ -1849,10 +1849,15 @@ class ShareManager(manager.SchedulerDependentManager):
@utils.require_driver_initialized
def allow_access(self, context, share_instance_id, access_rules):
"""Allow access to some share instance."""
share_instance = self._get_share_instance(context, share_instance_id)
status = share_instance['access_rules_status']
if status not in (constants.STATUS_UPDATING,
constants.STATUS_UPDATING_MULTIPLE,
constants.STATUS_ACTIVE):
add_rules = [self.db.share_access_get(context, rule_id)
for rule_id in access_rules]
share_instance = self._get_share_instance(context, share_instance_id)
share_server = self._get_share_server(context, share_instance)
return self.access_helper.update_access_rules(

29
manila/tests/share/test_access.py
View File

@ -65,6 +65,8 @@ class ShareInstanceAccessTestCase(test.TestCase):
return_value=self.share_instance))
self.mock_object(db, "share_access_get_all_for_share",
mock.Mock(return_value=original_rules))
self.mock_object(db, "share_access_get_all_for_instance",
mock.Mock(return_value=original_rules))
self.mock_object(db, "share_instance_update_access_status",
mock.Mock())
self.mock_object(self.driver, "update_access",
@ -117,3 +119,30 @@ class ShareInstanceAccessTestCase(test.TestCase):
db.share_instance_update_access_status.assert_called_with(
self.context, self.share_instance['id'], constants.STATUS_ERROR)
def test_update_access_rules_recursive_call(self):
share_instance = db_utils.create_share_instance(
access_rules_status=constants.STATUS_ACTIVE,
share_id=self.share['id'])
add_rules = [db_utils.create_access(
share_id=self.share['id'])]
original_rules = []
self.mock_object(db, "share_instance_get", mock.Mock(
return_value=share_instance))
self.mock_object(db, "share_access_get_all_for_instance",
mock.Mock(return_value=original_rules))
mock_update_access = self.mock_object(self.driver, "update_access")
self.mock_object(self.share_access_helper, '_check_needs_refresh',
mock.Mock(side_effect=[True, False]))
self.share_access_helper.update_access_rules(self.context,
share_instance['id'],
add_rules=add_rules)
mock_update_access.assert_has_calls([
mock.call(self.context, share_instance, original_rules,
add_rules=add_rules, delete_rules=[], share_server=None),
mock.call(self.context, share_instance, original_rules,
add_rules=[], delete_rules=[], share_server=None)
])

39
manila/tests/share/test_api.py
View File

@ -1378,15 +1378,18 @@ class ShareAPITestCase(test.TestCase):
self.assertRaises(exception.InvalidShare, self.api.allow_access,
self.context, share, 'fakeacctype', 'fakeaccto')
def test_allow_access_to_instance(self):
@ddt.data(constants.STATUS_ACTIVE, constants.STATUS_UPDATING)
def test_allow_access_to_instance(self, status):
share = db_utils.create_share(host='fake')
share_instance = db_utils.create_share_instance(
share_id=share['id'], access_rules_status=status, host='fake')
access = db_utils.create_access(share_id=share['id'])
rpc_method = self.mock_object(self.api.share_rpcapi, 'allow_access')
self.api.allow_access_to_instance(self.context, share.instance, access)
self.api.allow_access_to_instance(self.context, share_instance, access)
rpc_method.assert_called_once_with(
self.context, share.instance, access)
self.context, share_instance, access)
def test_allow_access_to_instance_exception(self):
share = db_utils.create_share(host='fake')
@ -1398,22 +1401,42 @@ class ShareAPITestCase(test.TestCase):
self.api.allow_access_to_instance, self.context,
share.instance, access)
def test_deny_access_to_instance(self):
def test_allow_access_to_instance_out_of_sync(self):
share = db_utils.create_share(host='fake')
access = db_utils.create_access(share_id=share['id'])
rpc_method = self.mock_object(self.api.share_rpcapi, 'allow_access')
share.instance['access_rules_status'] = constants.STATUS_OUT_OF_SYNC
self.api.allow_access_to_instance(self.context, share.instance, access)
rpc_method.assert_called_once_with(
self.context, share.instance, access)
@ddt.data(constants.STATUS_ACTIVE, constants.STATUS_UPDATING,
constants.STATUS_UPDATING_MULTIPLE)
def test_deny_access_to_instance(self, status):
share = db_utils.create_share(host='fake')
share_instance = db_utils.create_share_instance(
share_id=share['id'], access_rules_status=status, host='fake')
access = db_utils.create_access(share_id=share['id'])
rpc_method = self.mock_object(self.api.share_rpcapi, 'deny_access')
self.mock_object(db_api, 'share_instance_access_get',
mock.Mock(return_value=access.instance_mappings[0]))
self.mock_object(db_api, 'share_instance_update_access_status')
self.api.deny_access_to_instance(self.context, share.instance, access)
self.api.deny_access_to_instance(self.context, share_instance, access)
if status == constants.STATUS_ACTIVE:
expected_new_status = constants.STATUS_OUT_OF_SYNC
else:
expected_new_status = constants.STATUS_UPDATING_MULTIPLE
rpc_method.assert_called_once_with(
self.context, share.instance, access)
self.context, share_instance, access)
db_api.share_instance_update_access_status.assert_called_once_with(
self.context,
share.instance['id'],
constants.STATUS_OUT_OF_SYNC
share_instance['id'],
expected_new_status
)
@ddt.data('allow_access_to_instance', 'deny_access_to_instance')

33
manila/tests/share/test_manager.py
View File

@ -2195,6 +2195,10 @@ class ShareManagerTestCase(test.TestCase):
self.share_manager.driver, 'delete_share',
mock.Mock(side_effect=exception.ShareResourceNotFound(
share_id=share['id'])))
self.mock_object(
self.share_manager.access_helper, '_check_needs_refresh',
mock.Mock(return_value=False)
)
self.mock_object(manager.LOG, 'warning')
@ -2215,22 +2219,28 @@ class ShareManagerTestCase(test.TestCase):
share = db_utils.create_share()
share_id = share['id']
access = db_utils.create_access(share_id=share_id)
share_instance = db_utils.create_share_instance(
share_id=share_id,
access_rules_status=constants.STATUS_OUT_OF_SYNC)
share_instance_id = share_instance['id']
access = db_utils.create_access(share_id=share_id,
share_instance_id=share_instance_id)
access_id = access['id']
self.share_manager.allow_access(self.context, share.instance['id'],
self.share_manager.allow_access(self.context, share_instance_id,
[access_id])
self.assertEqual('active', db.share_instance_get(
self.context, share.instance['id']).access_rules_status)
self.context, share_instance_id).access_rules_status)
share_access.LOG.info.assert_called_with(mock.ANY,
share.instance['id'])
share_instance_id)
share_access.LOG.info.reset_mock()
self.share_manager.deny_access(self.context, share.instance['id'],
self.share_manager.deny_access(self.context, share_instance_id,
[access_id])
share_access.LOG.info.assert_called_with(mock.ANY,
share.instance['id'])
share_instance_id)
share_access.LOG.info.reset_mock()
def test_allow_deny_access_error(self):
@ -2249,14 +2259,19 @@ class ShareManagerTestCase(test.TestCase):
share = db_utils.create_share()
share_id = share['id']
access = db_utils.create_access(share_id=share_id)
share_instance = db_utils.create_share_instance(
share_id=share_id,
access_rules_status=constants.STATUS_OUT_OF_SYNC)
share_instance_id = share_instance['id']
access = db_utils.create_access(share_id=share_id,
share_instance_id=share_instance_id)
access_id = access['id']
def validate(method):
self.assertRaises(exception.ManilaException, method, self.context,
share.instance['id'], [access_id])
share_instance_id, [access_id])
inst = db.share_instance_get(self.context, share.instance['id'])
inst = db.share_instance_get(self.context, share_instance_id)
self.assertEqual(constants.STATUS_ERROR,
inst['access_rules_status'])