def test_retry_policy_says_retry(self):
session = self.make_session()
pool = session._pools.get.return_value
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.QUORUM)
connection = Mock(spec=Connection)
pool.borrow_connection.return_value = (connection, 1)
retry_policy = Mock()
retry_policy.on_unavailable.return_value = (RetryPolicy.RETRY,
ConsistencyLevel.ONE)
rf = ResponseFuture(session,
message,
query,
1,
retry_policy=retry_policy)
rf.send_request()
rf.session._pools.get.assert_called_once_with('ip1')
pool.borrow_connection.assert_called_once_with(timeout=ANY)
connection.send_msg.assert_called_once_with(
rf.message,
1,
cb=ANY,
encoder=ProtocolHandler.encode_message,
decoder=ProtocolHandler.decode_message,
result_metadata=[])
result = Mock(spec=UnavailableErrorMessage, info={})
host = Mock()
rf._set_result(host, None, None, result)
session.submit.assert_called_once_with(rf._retry_task, True, host)
self.assertEqual(1, rf._query_retries)
connection = Mock(spec=Connection)
pool.borrow_connection.return_value = (connection, 2)
# simulate the executor running this
rf._retry_task(True, host)
# it should try again with the same host since this was
# an UnavailableException
rf.session._pools.get.assert_called_with(host)
pool.borrow_connection.assert_called_with(timeout=ANY)
connection.send_msg.assert_called_with(
rf.message,
2,
cb=ANY,
encoder=ProtocolHandler.encode_message,
decoder=ProtocolHandler.decode_message,
result_metadata=[])
def test_all_pools_shutdown(self):
session = self.make_basic_session()
session.cluster._default_load_balancing_policy.make_query_plan.return_value = [
'ip1', 'ip2'
]
session._pools.get.return_value.is_shutdown = True
rf = ResponseFuture(session, Mock(), Mock(), 1)
rf.send_request()
self.assertRaises(NoHostAvailable, rf.result)
def test_unavailable_error_message(self):
session = self.make_session()
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
query.retry_policy = Mock()
query.retry_policy.on_unavailable.return_value = (RetryPolicy.RETHROW,
None)
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
rf = ResponseFuture(session, message, query, 1)
rf.send_request()
result = Mock(spec=UnavailableErrorMessage, info={})
rf._set_result(None, None, None, result)
self.assertRaises(Exception, rf.result)
def test_read_timeout_error_message(self):
session = self.make_session()
query = SimpleStatement("SELECT * FROM foo")
query.retry_policy = Mock()
query.retry_policy.on_read_timeout.return_value = (RetryPolicy.RETHROW,
None)
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
rf = ResponseFuture(session, message, query, 1)
rf.send_request()
result = Mock(spec=ReadTimeoutErrorMessage, info={})
rf._set_result(None, None, None, result)
self.assertRaises(Exception, rf.result)
def test_retry_policy_says_ignore(self):
session = self.make_session()
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
retry_policy = Mock()
retry_policy.on_unavailable.return_value = (RetryPolicy.IGNORE, None)
rf = ResponseFuture(session,
message,
query,
1,
retry_policy=retry_policy)
rf.send_request()
result = Mock(spec=UnavailableErrorMessage, info={})
rf._set_result(None, None, None, result)
self.assertFalse(rf.result())
def test_add_callbacks(self):
session = self.make_session()
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
query.retry_policy = Mock()
query.retry_policy.on_unavailable.return_value = (RetryPolicy.RETHROW,
None)
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
# test errback
rf = ResponseFuture(session, message, query, 1)
rf.send_request()
rf.add_callbacks(callback=self.assertEqual,
callback_args=([{
'col': 'val'
}], ),
errback=self.assertIsInstance,
errback_args=(Exception, ))
result = Mock(spec=UnavailableErrorMessage, info={})
rf._set_result(None, None, None, result)
self.assertRaises(Exception, rf.result)
# test callback
rf = ResponseFuture(session, message, query, 1)
rf.send_request()
callback = Mock()
expected_result = (object(), object())
arg = "positional"
kwargs = {'one': 1, 'two': 2}
rf.add_callbacks(callback=callback,
callback_args=(arg, ),
callback_kwargs=kwargs,
errback=self.assertIsInstance,
errback_args=(Exception, ))
rf._set_result(
None, None, None,
self.make_mock_response(expected_result[0], expected_result[1]))
self.assertEqual(rf.result()[0], expected_result)
callback.assert_called_once_with([expected_result], arg, **kwargs)
def test_multiple_errbacks(self):
session = self.make_session()
pool = session._pools.get.return_value
connection = Mock(spec=Connection)
pool.borrow_connection.return_value = (connection, 1)
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
retry_policy = Mock()
retry_policy.on_unavailable.return_value = (RetryPolicy.RETHROW, None)
rf = ResponseFuture(session,
message,
query,
1,
retry_policy=retry_policy)
rf.send_request()
callback = Mock()
arg = "positional"
kwargs = {'one': 1, 'two': 2}
rf.add_errback(callback, arg, **kwargs)
callback2 = Mock()
arg2 = "another"
kwargs2 = {'three': 3, 'four': 4}
rf.add_errback(callback2, arg2, **kwargs2)
expected_exception = Unavailable("message", 1, 2, 3)
result = Mock(spec=UnavailableErrorMessage, info={'something': 'here'})
result.to_exception.return_value = expected_exception
rf._set_result(None, None, None, result)
self.assertRaises(Exception, rf.result)
callback.assert_called_once_with(expected_exception, arg, **kwargs)
callback2.assert_called_once_with(expected_exception, arg2, **kwargs2)
def test_errback(self):
session = self.make_session()
pool = session._pools.get.return_value
connection = Mock(spec=Connection)
pool.borrow_connection.return_value = (connection, 1)
query = SimpleStatement("INSERT INFO foo (a, b) VALUES (1, 2)")
query.retry_policy = Mock()
query.retry_policy.on_unavailable.return_value = (RetryPolicy.RETHROW,
None)
message = QueryMessage(query=query,
consistency_level=ConsistencyLevel.ONE)
rf = ResponseFuture(session, message, query, 1)
rf.send_request()
rf.add_errback(self.assertIsInstance, Exception)
result = Mock(spec=UnavailableErrorMessage, info={})
rf._set_result(None, None, None, result)
self.assertRaises(Exception, rf.result)
# this should get called immediately now that the error is set
rf.add_errback(self.assertIsInstance, Exception)
def _send_query_message(self, session, timeout, **kwargs):
query = "SELECT * FROM test3rf.test"
message = QueryMessage(query=query, **kwargs)
future = ResponseFuture(session, message, query=None, timeout=timeout)
future.send_request()
return future