def test_join_invalid_discovery(
    skip_if_not_matrix,
    local_matrix_server,
    private_rooms,
    retry_interval,
    retries_before_backoff,
):
    """_join_discovery_room tries to join on all servers on available_servers config

    If any of the servers isn't reachable by synapse, it'll return a 500 response, which needs
    to be handled, and if no discovery room is found on any of the available_servers, one in
    our current server should be created
    """
    transport = MatrixTransport({
        'discovery_room': 'discovery',
        'retries_before_backoff': retries_before_backoff,
        'retry_interval': retry_interval,
        'server': local_matrix_server,
        'server_name': 'matrix.local.raiden',
        'available_servers': ['http://invalid.server'],
        'private_rooms': private_rooms,
    })
    transport._client.api.retry_timeout = 0
    transport._send_raw = MagicMock()
    raiden_service = MockRaidenService(None)

    transport.start(
        raiden_service,
        raiden_service.message_handler,
        None,
    )
    transport.log = MagicMock()

    transport._join_discovery_room()
    assert isinstance(transport._discovery_room, Room)

    transport.stop()
    transport.get()
def test_matrix_message_retry(
    local_matrix_servers,
    private_rooms,
    retry_interval,
    retries_before_backoff,
):
    """ Test the retry mechanism implemented into the matrix client.
    The test creates a transport and sends a message. Given that the
    receiver was online, the initial message is sent but the receiver
    doesn't respond in time and goes offline. The retrier should then
    wait for the `retry_interval` duration to pass and send the message
    again but this won't work because the receiver is offline. Once
    the receiver comes back again, the message should be sent again.
    """
    partner_address = make_address()

    transport = MatrixTransport({
        'discovery_room': 'discovery',
        'retries_before_backoff': retries_before_backoff,
        'retry_interval': retry_interval,
        'server': local_matrix_servers[0],
        'server_name': local_matrix_servers[0].netloc,
        'available_servers': [],
        'private_rooms': private_rooms,
    })
    transport._send_raw = MagicMock()
    raiden_service = MockRaidenService(None)

    transport.start(
        raiden_service,
        raiden_service.message_handler,
        None,
    )
    transport.log = MagicMock()

    # Receiver is online
    transport._address_to_presence[partner_address] = UserPresence.ONLINE

    queueid = QueueIdentifier(
        recipient=partner_address,
        channel_identifier=CHANNEL_IDENTIFIER_GLOBAL_QUEUE,
    )
    chain_state = raiden_service.wal.state_manager.current_state

    retry_queue: _RetryQueue = transport._get_retrier(partner_address)
    assert bool(retry_queue), 'retry_queue not running'

    # Send the initial message
    message = Processed(0)
    message.sign(transport._raiden_service.private_key)
    chain_state.queueids_to_queues[queueid] = [message]
    retry_queue.enqueue_global(message)

    gevent.sleep(1)

    transport._send_raw.call_count = 1

    # Receiver goes offline
    transport._address_to_presence[partner_address] = UserPresence.OFFLINE

    gevent.sleep(retry_interval)

    transport.log.debug.assert_called_with(
        'Partner not reachable. Skipping.',
        partner=pex(partner_address),
        status=UserPresence.OFFLINE,
    )

    # Retrier did not call send_raw given that the receiver is still offline
    assert transport._send_raw.call_count == 1

    # Receiver comes back online
    transport._address_to_presence[partner_address] = UserPresence.ONLINE

    gevent.sleep(retry_interval)

    # Retrier now should have sent the message again
    assert transport._send_raw.call_count == 2

    transport.stop()
    transport.get()