async def test_on_receive_handles_gapfill(
self, pipeline_with_messages, user_notification_message
):
seq_num_app = SeqNumManagerApp(pipeline_with_messages)
seq_num_app.startup_time = datetime.utcnow() - timedelta(
seconds=10
) # Don't wait for resend requests
seq_num_app.receive_seq_num = 5 # 5 Messages received so far
user_notification_message.seq_num = 8 # Simulate missing messages 6 and 7
try:
await seq_num_app.on_receive(user_notification_message)
assert pipeline_with_messages.send.call_count == 1 # Resend request sent
except StopMessageProcessing:
# Expected
pass
# Simulate resend of 6 and 7
for seq_num in [6, 7]:
message = user_notification_message.copy()
message.seq_num = seq_num
message.PossDupFlag = True
await seq_num_app.on_receive(message)
# Wait for separate 'send' tasks to complete
tasks = asyncio.all_tasks()
await asyncio.wait(tasks, timeout=0.1)
assert (
pipeline_with_messages.receive.call_count == 1
) # One queued message (with sequence number 8) processed
async def test_send_resend_request_waits_for_target_before_doing_gapfill(
self, pipeline_with_messages):
seq_num_app = SeqNumManagerApp(pipeline_with_messages)
seq_num_app.startup_time = datetime.utcnow() - timedelta(
seconds=5) # Don't wait
assert not seq_num_app.waited_for_resend_request_event.is_set()
await seq_num_app._send_resend_request([1, 2])
assert seq_num_app.waited_for_resend_request_event.is_set()
async def test_send_resend_request_sends_resend_request(
self, pipeline_with_messages):
seq_num_app = SeqNumManagerApp(pipeline_with_messages)
seq_num_app.startup_time = datetime.utcnow() - timedelta(
seconds=5) # Don't wait
await seq_num_app._send_resend_request([1, 2])
# Wait for separate 'send' tasks to complete
tasks = asyncio.all_tasks()
await asyncio.wait(tasks, timeout=0.1)
assert pipeline_with_messages.send.call_count == 1
async def test_handle_seq_num_too_high_starts_buffer_and_sends_resend_request(
self, pipeline_with_messages, email_message):
with pytest.raises(StopMessageProcessing):
seq_num_app = SeqNumManagerApp(pipeline_with_messages)
seq_num_app.startup_time = datetime.utcnow() - timedelta(
seconds=5) # Don't wait
email_message.MsgSeqNum = 99
await seq_num_app._handle_sequence_number_too_high(email_message)
# Wait for separate 'send' tasks to complete
tasks = asyncio.all_tasks()
await asyncio.wait(tasks, timeout=0.1)
assert len(seq_num_app.receive_buffer) == 1
assert seq_num_app.receive_buffer[0] == email_message
assert pipeline_with_messages.send.call_count == 1
async def test_handle_seq_num_too_high_buffers_messages_received_out_of_order(
self, pipeline_with_messages, user_notification_message):
seq_num_app = SeqNumManagerApp(pipeline_with_messages)
seq_num_app.startup_time = datetime.utcnow() - timedelta(
seconds=5) # Don't wait
for idx in range(5):
out_of_sequence_msg = user_notification_message.copy()
out_of_sequence_msg.MsgSeqNum = 5 + idx
try:
await seq_num_app._handle_sequence_number_too_high(
out_of_sequence_msg)
except StopMessageProcessing:
# Expected
pass
# Wait for separate 'send' tasks to complete
tasks = asyncio.all_tasks()
await asyncio.wait(tasks, timeout=0.1)
assert len(seq_num_app.receive_buffer) == 5
assert pipeline_with_messages.send.call_count == 1