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()
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 remote_stop(lock_engine_id):
rpc = proxy.RpcProxy(lock_engine_id, "1.0")
msg = rpc.make_msg("stop_stack", stack_identity=stack_identity)
timeout = cfg.CONF.engine_life_check_timeout
try:
rpc.call(cnxt, msg, topic=lock_engine_id, timeout=timeout)
except rpc_common.Timeout:
return False
def engine_alive(context, engine_id):
topic = engine_id
rpc = proxy.RpcProxy(topic, "1.0")
msg = rpc.make_msg("listening")
try:
return rpc.call(context, msg, topic=topic,
timeout=cfg.CONF.engine_life_check_timeout)
except rpc_common.Timeout:
return False
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(rpc_common.ClientException, slock.acquire)
self.m.VerifyAll()
