def test_new_view_message_is_not_sent_by_non_primary_when_view_change_certificate_is_reached( internal_bus, external_bus, validators, primary, view_change_service_builder, initial_view_no, some_item, is_master): # TODO: Need to decide on how we handle this case if not is_master: return next_view_no = initial_view_no + 1 primary_name = primary(next_view_no) non_primary_name = some_item(validators, exclude=[primary_name]) service = view_change_service_builder(non_primary_name) # start view change internal_bus.send(NeedViewChange()) external_bus.sent_messages.clear() # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] vc = create_view_change(initial_view_no) for vc_frm in non_primaries: external_bus.process_incoming( vc, generateName(vc_frm, service._data.inst_id)) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): external_bus.process_incoming( ack, generateName(ack_frm, service._data.inst_id)) # check that NewView hasn't been sent assert all(not isinstance(msg, NewView) for msg in external_bus.sent_messages)
def test_view_change_finished_is_sent_by_non_primary_once_view_change_certificate_is_reached_and_new_view_from_primary( internal_bus, external_bus, validators, primary, view_change_service_builder, initial_view_no, some_item, is_master): # TODO: Need to decide on how we handle this case if not is_master: return handler = Mock() internal_bus.subscribe(NewViewAccepted, handler) next_view_no = initial_view_no + 1 primary_name = primary(next_view_no) non_primary_name = some_item(validators, exclude=[primary_name]) service = view_change_service_builder(non_primary_name) vc = create_view_change(initial_view_no) service._data.preprepared = vc.preprepared service._data.prepared = vc.prepared service._data.stable_checkpoint = vc.stableCheckpoint service._data.checkpoints = vc.checkpoints old_data = copy_shared_data(service._data) # start view change internal_bus.send(NeedViewChange()) external_bus.sent_messages.clear() # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] non_primaries = random.sample(non_primaries, service._data.quorums.view_change.value) new_view = create_new_view_from_vc(vc, non_primaries) for vc_frm in non_primaries: external_bus.process_incoming( vc, generateName(vc_frm, service._data.inst_id)) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): external_bus.process_incoming( ack, generateName(ack_frm, service._data.inst_id)) # check that NewViewAccepted hasn't been sent if NewView is from non-primary external_bus.process_incoming( new_view, generateName(non_primary_name, service._data.inst_id)) handler.assert_not_called() assert service._data.view_no == initial_view_no + 1 assert service._data.waiting_for_new_view # check that NewViewAccepted has been sent if NewView is from primary external_bus.process_incoming( new_view, generateName(primary_name, service._data.inst_id)) expected_finish_vc = NewViewAccepted(view_no=initial_view_no + 1, view_changes=new_view.viewChanges, checkpoint=new_view.checkpoint, batches=new_view.batches) handler.assert_called_with(expected_finish_vc) # check that shared data is updated new_data = copy_shared_data(service._data) check_service_changed_only_owned_fields_in_shared_data( ViewChangeService, old_data, new_data) assert service._data.view_no == initial_view_no + 1 assert not service._data.waiting_for_new_view
def test_send_instance_change_on_new_view_with_incorrect_checkpoint( internal_bus, external_bus, validators, primary, view_change_service_builder, initial_view_no, some_item, is_master): # TODO: Need to decide on how we handle this case if not is_master: return next_view_no = initial_view_no + 1 primary_name = primary(next_view_no) non_primary_name = some_item(validators, exclude=[primary_name]) service = view_change_service_builder(non_primary_name) vc = create_view_change(initial_view_no) service._data.preprepared = vc.preprepared service._data.prepared = vc.prepared service._data.stable_checkpoint = vc.stableCheckpoint service._data.checkpoints = vc.checkpoints # start view change internal_bus.send(NeedViewChange()) external_bus.sent_messages.clear() # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] non_primaries = random.sample(non_primaries, service._data.quorums.view_change.value) for vc_frm in non_primaries: external_bus.process_incoming( vc, generateName(vc_frm, service._data.inst_id)) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): external_bus.process_incoming( ack, generateName(ack_frm, service._data.inst_id)) cp = Checkpoint(instId=0, viewNo=initial_view_no, seqNoStart=0, seqNoEnd=1000, digest=cp_digest(1000)) new_view = create_new_view_from_vc(vc, non_primaries, checkpoint=cp) # send NewView by Primary init_network_msg_count = len(external_bus.sent_messages) external_bus.process_incoming( new_view, generateName(primary_name, service._data.inst_id)) # we don't go to new view, just send Instance Change assert service._data.view_no == initial_view_no + 1 assert init_network_msg_count + 1 == len(external_bus.sent_messages) msg, dst = external_bus.sent_messages[-1] assert dst is None # broadcast assert isinstance(msg, InstanceChange) assert msg.viewNo == initial_view_no + 2 assert msg.reason == Suspicions.NEW_VIEW_INVALID_CHECKPOINTS.code
def test_do_not_send_instance_change_on_timeout_when_multiple_view_change_finished_on_time(internal_bus, external_bus, validators, primary, view_change_service_builder, timer, initial_view_no, is_master): # TODO: Need to decide on how we handle this case if not is_master: return primary_name = primary(initial_view_no + 2) service = view_change_service_builder(primary_name) # start first view change internal_bus.send(NeedViewChange()) # start second view change internal_bus.send(NeedViewChange()) external_bus.sent_messages.clear() # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] vc = create_view_change(initial_view_no + 1) service._data.checkpoints.append(Checkpoint(instId=0, viewNo=initial_view_no + 1, seqNoStart=0, seqNoEnd=DEFAULT_STABLE_CHKP, digest=cp_digest(DEFAULT_STABLE_CHKP))) for vc_frm in non_primaries: external_bus.process_incoming(vc, generateName(vc_frm, service._data.inst_id)) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): external_bus.process_incoming(ack, generateName(ack_frm, service._data.inst_id)) # check that view change is finished assert service._data.view_no == initial_view_no + 2 assert not service._data.waiting_for_new_view assert len(external_bus.sent_messages) == 1 msg, dst = external_bus.sent_messages[0] assert isinstance(msg, NewView) # make sure view change hasn't been started again timer.sleep(service._config.NEW_VIEW_TIMEOUT + 1) assert service._data.view_no == initial_view_no + 2 assert len(external_bus.sent_messages) == 1 msg, dst = external_bus.sent_messages[0] assert isinstance(msg, NewView)
def test_new_view_incorrect_checkpoint(internal_bus, validators, primary, view_change_service_builder, initial_view_no, some_item): next_view_no = initial_view_no + 1 primary_name = primary(next_view_no) non_primary_name = some_item(validators, exclude=[primary_name]) service = view_change_service_builder(non_primary_name) vc = create_view_change(initial_view_no) service._data.preprepared = vc.preprepared service._data.prepared = vc.prepared service._data.stable_checkpoint = vc.stableCheckpoint service._data.checkpoints = vc.checkpoints # start view change internal_bus.send(NeedViewChange()) service._network.sent_messages.clear() handler = Mock() internal_bus.subscribe(NeedViewChange, handler) # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] non_primaries = random.sample(non_primaries, service._data.quorums.view_change.value) for vc_frm in non_primaries: service._network.process_incoming(vc, vc_frm) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): service._network.process_incoming(ack, ack_frm) cp = Checkpoint(instId=0, viewNo=initial_view_no, seqNoStart=0, seqNoEnd=1000, digest=cp_digest(1000)) new_view = create_new_view_from_vc(vc, non_primaries, checkpoint=cp) # send NewView by Primary service._network.process_incoming(new_view, primary_name) # make sure that NeedViewChange is called handler.assert_called_with(NeedViewChange()) # make sure that we get to the next view assert service._data.view_no == initial_view_no + 2 assert service._data.waiting_for_new_view
def test_view_change_finished_is_sent_by_primary_once_view_change_certificate_is_reached( internal_bus, validators, primary, view_change_service_builder, initial_view_no): handler = Mock() internal_bus.subscribe(NewViewAccepted, handler) primary_name = primary(initial_view_no + 1) service = view_change_service_builder(primary_name) # start view change internal_bus.send(NeedViewChange()) service._network.sent_messages.clear() old_data = copy_shared_data(service._data) # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] non_primaries = random.sample(non_primaries, service._data.quorums.view_change.value) vc = create_view_change(initial_view_no) new_view = create_new_view_from_vc(vc, non_primaries) for vc_frm in non_primaries: service._network.process_incoming(vc, vc_frm) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): service._network.process_incoming(ack, ack_frm) # check that NewViewAccepted has been sent expected_finish_vc = NewViewAccepted(view_no=initial_view_no + 1, view_changes=new_view.viewChanges, checkpoint=new_view.checkpoint, batches=new_view.batches) handler.assert_called_with(expected_finish_vc) # check that shared data is updated new_data = copy_shared_data(service._data) check_service_changed_only_owned_fields_in_shared_data( ViewChangeService, old_data, new_data) assert service._data.view_no == initial_view_no + 1 assert not service._data.waiting_for_new_view
def test_new_view_message_is_not_sent_by_non_primary_when_view_change_certificate_is_reached( internal_bus, validators, primary, view_change_service_builder, initial_view_no, some_item): next_view_no = initial_view_no + 1 primary_name = primary(next_view_no) non_primary_name = some_item(validators, exclude=[primary_name]) service = view_change_service_builder(non_primary_name) # start view change internal_bus.send(NeedViewChange()) service._network.sent_messages.clear() # receive quorum of ViewChanges and ViewChangeAcks non_primaries = [item for item in validators if item != primary_name] vc = create_view_change(initial_view_no) for vc_frm in non_primaries: service._network.process_incoming(vc, vc_frm) for ack, ack_frm in create_view_change_acks(vc, vc_frm, non_primaries): service._network.process_incoming(ack, ack_frm) # check that NewView hasn't been sent assert all(not isinstance(msg, NewView) for msg in service._network.sent_messages)