py-libp2p/tests_interop/test_pubsub.py

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import asyncio
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import functools
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from p2pclient.pb import p2pd_pb2
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import pytest
from libp2p.peer.id import ID
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from libp2p.pubsub.pb import rpc_pb2
from libp2p.tools.interop.utils import connect
from libp2p.utils import read_varint_prefixed_bytes
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TOPIC_0 = "ABALA"
TOPIC_1 = "YOOOO"
async def p2pd_subscribe(p2pd, topic) -> "asyncio.Queue[rpc_pb2.Message]":
reader, writer = await p2pd.control.pubsub_subscribe(topic)
queue = asyncio.Queue()
async def _read_pubsub_msg() -> None:
writer_closed_task = asyncio.ensure_future(writer.wait_closed())
while True:
done, pending = await asyncio.wait(
[read_varint_prefixed_bytes(reader), writer_closed_task],
return_when=asyncio.FIRST_COMPLETED,
)
done_tasks = tuple(done)
if writer.is_closing():
return
read_task = done_tasks[0]
# Sanity check
assert read_task._coro.__name__ == "read_varint_prefixed_bytes"
msg_bytes = read_task.result()
ps_msg = p2pd_pb2.PSMessage()
ps_msg.ParseFromString(msg_bytes)
# Fill in the message used in py-libp2p
msg = rpc_pb2.Message(
from_id=ps_msg.from_id,
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data=ps_msg.data,
seqno=ps_msg.seqno,
topicIDs=ps_msg.topicIDs,
signature=ps_msg.signature,
key=ps_msg.key,
)
queue.put_nowait(msg)
asyncio.ensure_future(_read_pubsub_msg())
await asyncio.sleep(0)
return queue
def validate_pubsub_msg(msg: rpc_pb2.Message, data: bytes, from_peer_id: ID) -> None:
assert msg.data == data and msg.from_id == from_peer_id
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@pytest.mark.parametrize("is_gossipsub", (True, False))
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@pytest.mark.parametrize("num_hosts, num_p2pds", ((1, 2),))
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@pytest.mark.asyncio
async def test_pubsub(pubsubs, p2pds):
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#
# Test: Recognize pubsub peers on connection.
#
py_pubsub = pubsubs[0]
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# go0 <-> py <-> go1
await connect(p2pds[0], py_pubsub.host)
await connect(py_pubsub.host, p2pds[1])
py_peer_id = py_pubsub.host.get_id()
# Check pubsub peers
pubsub_peers_0 = await p2pds[0].control.pubsub_list_peers("")
assert len(pubsub_peers_0) == 1 and pubsub_peers_0[0] == py_peer_id
pubsub_peers_1 = await p2pds[1].control.pubsub_list_peers("")
assert len(pubsub_peers_1) == 1 and pubsub_peers_1[0] == py_peer_id
assert (
len(py_pubsub.peers) == 2
and p2pds[0].peer_id in py_pubsub.peers
and p2pds[1].peer_id in py_pubsub.peers
)
#
# Test: `subscribe`.
#
# (name, topics)
# (go_0, [0, 1]) <-> (py, [0, 1]) <-> (go_1, [1])
sub_py_topic_0 = await py_pubsub.subscribe(TOPIC_0)
sub_py_topic_1 = await py_pubsub.subscribe(TOPIC_1)
sub_go_0_topic_0 = await p2pd_subscribe(p2pds[0], TOPIC_0)
sub_go_0_topic_1 = await p2pd_subscribe(p2pds[0], TOPIC_1)
sub_go_1_topic_1 = await p2pd_subscribe(p2pds[1], TOPIC_1)
# Check topic peers
await asyncio.sleep(0.1)
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# go_0
go_0_topic_0_peers = await p2pds[0].control.pubsub_list_peers(TOPIC_0)
assert len(go_0_topic_0_peers) == 1 and py_peer_id == go_0_topic_0_peers[0]
go_0_topic_1_peers = await p2pds[0].control.pubsub_list_peers(TOPIC_1)
assert len(go_0_topic_1_peers) == 1 and py_peer_id == go_0_topic_1_peers[0]
# py
py_topic_0_peers = py_pubsub.peer_topics[TOPIC_0]
assert len(py_topic_0_peers) == 1 and p2pds[0].peer_id == py_topic_0_peers[0]
# go_1
go_1_topic_1_peers = await p2pds[1].control.pubsub_list_peers(TOPIC_1)
assert len(go_1_topic_1_peers) == 1 and py_peer_id == go_1_topic_1_peers[0]
#
# Test: `publish`
#
# 1. py publishes
# - 1.1. py publishes data_11 to topic_0, py and go_0 receives.
# - 1.2. py publishes data_12 to topic_1, all receive.
# 2. go publishes
# - 2.1. go_0 publishes data_21 to topic_0, py and go_0 receive.
# - 2.2. go_1 publishes data_22 to topic_1, all receive.
# 1.1. py publishes data_11 to topic_0, py and go_0 receives.
data_11 = b"data_11"
await py_pubsub.publish(TOPIC_0, data_11)
validate_11 = functools.partial(
validate_pubsub_msg, data=data_11, from_peer_id=py_peer_id
)
validate_11(await sub_py_topic_0.get())
validate_11(await sub_go_0_topic_0.get())
# 1.2. py publishes data_12 to topic_1, all receive.
data_12 = b"data_12"
validate_12 = functools.partial(
validate_pubsub_msg, data=data_12, from_peer_id=py_peer_id
)
await py_pubsub.publish(TOPIC_1, data_12)
validate_12(await sub_py_topic_1.get())
validate_12(await sub_go_0_topic_1.get())
validate_12(await sub_go_1_topic_1.get())
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# 2.1. go_0 publishes data_21 to topic_0, py and go_0 receive.
data_21 = b"data_21"
validate_21 = functools.partial(
validate_pubsub_msg, data=data_21, from_peer_id=p2pds[0].peer_id
)
await p2pds[0].control.pubsub_publish(TOPIC_0, data_21)
validate_21(await sub_py_topic_0.get())
validate_21(await sub_go_0_topic_0.get())
# 2.2. go_1 publishes data_22 to topic_1, all receive.
data_22 = b"data_22"
validate_22 = functools.partial(
validate_pubsub_msg, data=data_22, from_peer_id=p2pds[1].peer_id
)
await p2pds[1].control.pubsub_publish(TOPIC_1, data_22)
validate_22(await sub_py_topic_1.get())
validate_22(await sub_go_0_topic_1.get())
validate_22(await sub_go_1_topic_1.get())
#
# Test: `unsubscribe` and re`subscribe`
#
await py_pubsub.unsubscribe(TOPIC_0)
await asyncio.sleep(0.1)
assert py_peer_id not in (await p2pds[0].control.pubsub_list_peers(TOPIC_0))
assert py_peer_id not in (await p2pds[1].control.pubsub_list_peers(TOPIC_0))
await py_pubsub.subscribe(TOPIC_0)
await asyncio.sleep(0.1)
assert py_peer_id in (await p2pds[0].control.pubsub_list_peers(TOPIC_0))
assert py_peer_id in (await p2pds[1].control.pubsub_list_peers(TOPIC_0))