deb-heat/heat/tests/test_stack_lock.py

183 lines
7.0 KiB
Python

#
# 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 heat.common import exception
from heat.db import api as db_api
from heat.engine import stack_lock
from heat.openstack.common.rpc import common as rpc_common
from heat.openstack.common.rpc import proxy
from heat.tests.common import HeatTestCase
from heat.tests import utils
class StackLockTest(HeatTestCase):
def setUp(self):
super(StackLockTest, self).setUp()
utils.setup_dummy_db()
self.context = utils.dummy_context()
self.stack = self.m.CreateMockAnything()
self.stack.id = "aae01f2d-52ae-47ac-8a0d-3fde3d220fea"
self.stack.name = "test_stack"
self.stack.action = "CREATE"
self.engine_id = stack_lock.StackLock.generate_engine_id()
def test_successful_acquire_new_lock(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn(None)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
slock.acquire()
self.m.VerifyAll()
def test_failed_acquire_existing_lock_current_engine(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn(self.engine_id)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
self.assertRaises(exception.ActionInProgress, slock.acquire)
self.m.VerifyAll()
def test_successful_acquire_existing_lock_engine_dead(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
self.m.StubOutWithMock(proxy.RpcProxy, "call")
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
self.m.StubOutWithMock(db_api, "stack_lock_steal")
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).AndReturn(None)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
slock.acquire()
self.m.VerifyAll()
def test_failed_acquire_existing_lock_engine_alive(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
self.m.StubOutWithMock(proxy.RpcProxy, "call")
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndReturn(True)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
self.assertRaises(exception.ActionInProgress, slock.acquire)
self.m.VerifyAll()
def test_failed_acquire_existing_lock_engine_dead(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
self.m.StubOutWithMock(proxy.RpcProxy, "call")
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
self.m.StubOutWithMock(db_api, "stack_lock_steal")
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).\
AndReturn("fake-engine-id2")
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
self.assertRaises(exception.ActionInProgress, slock.acquire)
self.m.VerifyAll()
def test_successful_acquire_with_retry(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
self.m.StubOutWithMock(proxy.RpcProxy, "call")
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
self.m.StubOutWithMock(db_api, "stack_lock_steal")
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).\
AndReturn(True)
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).\
AndReturn(None)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
slock.acquire()
self.m.VerifyAll()
def test_failed_acquire_one_retry_only(self):
self.m.StubOutWithMock(db_api, "stack_lock_create")
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
self.m.StubOutWithMock(proxy.RpcProxy, "call")
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
self.m.StubOutWithMock(db_api, "stack_lock_steal")
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).\
AndReturn(True)
db_api.stack_lock_create(self.stack.id, self.engine_id).\
AndReturn("fake-engine-id")
topic = self.stack.id
rpc = proxy.RpcProxy(topic, "1.0")
rpc.call(self.context, rpc.make_msg("listening"), timeout=2,
topic="fake-engine-id").AndRaise(rpc_common.Timeout)
db_api.stack_lock_steal(self.stack.id, "fake-engine-id",
self.engine_id).\
AndReturn(True)
self.m.ReplayAll()
slock = stack_lock.StackLock(self.context, self.stack, self.engine_id)
self.assertRaises(exception.ActionInProgress, slock.acquire)
self.m.VerifyAll()