async def test_reclaim_lost_messages(loop, redis_client, redis_pool, dummy_api):
"""Test that messages which another consumer has timed out on can be reclaimed"""
# Add a message
await redis_client.xadd(
"my.dummy.my_event:stream",
fields={
b"api_name": b"my.dummy",
b"event_name": b"my_event",
b"id": b"123",
b"version": b"1",
b":field": b'"value"',
},
)
# Create the consumer group
await redis_client.xgroup_create(
stream="my.dummy.my_event:stream", group_name="test_service", latest_id="0"
)
# Claim it in the name of another consumer
result = await redis_client.xread_group(
group_name="test_service",
consumer_name="bad_consumer",
streams=["my.dummy.my_event:stream"],
latest_ids=[">"],
)
assert result, "Didn't actually manage to claim any message"
# Sleep a moment to fake a short timeout
await asyncio.sleep(0.1)
event_transport = RedisEventTransport(
redis_pool=redis_pool,
service_name="test_service",
consumer_name="good_consumer",
acknowledgement_timeout=0.01, # in ms, short for the sake of testing
stream_use=StreamUse.PER_EVENT,
)
reclaimer = event_transport._reclaim_lost_messages(
stream_names=["my.dummy.my_event:stream"],
consumer_group="test_service",
expected_events={"my_event"},
)
reclaimed_messages = []
async for m in reclaimer:
reclaimed_messages.extend(m)
assert len(reclaimed_messages) == 1
assert reclaimed_messages[0].native_id
assert type(reclaimed_messages[0].native_id) == str
async def test_reclaim_lost_messages_ignores_non_timed_out_messages(
loop, redis_client, redis_pool, dummy_api
):
"""Ensure messages which have not timed out are not reclaimed"""
# Add a message
await redis_client.xadd(
"my.dummy.my_event:stream",
fields={
b"api_name": b"my.dummy",
b"event_name": b"my_event",
b"id": b"123",
b":field": b'"value"',
},
)
# Create the consumer group
await redis_client.xgroup_create(
stream="my.dummy.my_event:stream", group_name="test_service", latest_id="0"
)
# Claim it in the name of another consumer
await redis_client.xread_group(
group_name="test_service",
consumer_name="bad_consumer",
streams=["my.dummy.my_event:stream"],
latest_ids=[">"],
)
# Sleep a moment to fake a short timeout
await asyncio.sleep(0.1)
event_transport = RedisEventTransport(
redis_pool=redis_pool,
service_name="test_service",
consumer_name="good_consumer",
# in ms, longer as we want to check that the messages is not reclaimed
acknowledgement_timeout=0.9,
stream_use=StreamUse.PER_EVENT,
)
reclaimer = event_transport._reclaim_lost_messages(
stream_names=["my.dummy.my_event:stream"],
consumer_group="test_service",
expected_events={"my_event"},
)
reclaimed_messages = [m async for m in reclaimer]
assert len(reclaimed_messages) == 0
async def test_reclaim_lost_messages(loop, redis_client, redis_pool,
dummy_api):
"""Test that messages which another consumer has timed out on can be reclaimed"""
# Add a message
await redis_client.xadd(
"my.dummy.my_event:stream",
fields={
b"api_name": b"my.dummy",
b"event_name": b"my_event",
b"id": b"123",
b"version": b"1",
b":field": b'"value"',
},
)
# Create the consumer group
await redis_client.xgroup_create("my.dummy.my_event:stream",
"test_group",
latest_id="0")
# Claim it in the name of another consumer
await redis_client.xread_group("test_group",
"bad_consumer",
["my.dummy.my_event:stream"],
latest_ids=[0])
# Sleep a moment to fake a short timeout
await asyncio.sleep(0.02)
event_transport = RedisEventTransport(
redis_pool=redis_pool,
consumer_group_prefix="test_group",
consumer_name="good_consumer",
acknowledgement_timeout=0.01, # in ms, short for the sake of testing
stream_use=StreamUse.PER_EVENT,
)
reclaimer = event_transport._reclaim_lost_messages(
stream_names=["my.dummy.my_event:stream"],
consumer_group="test_group",
expected_events={"my_event"},
)
reclaimed_messages = [m async for m, id_ in reclaimer]
assert len(reclaimed_messages) == 1
assert reclaimed_messages[0].native_id
assert type(reclaimed_messages[0].native_id) == str
