py-libp2p/tests/libp2p/test_notify.py

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import multiaddr
import pytest, asyncio
from tests.utils import cleanup
from libp2p import new_node
from libp2p.peer.peerinfo import info_from_p2p_addr
from libp2p.network.notifee_interface import INotifee
# pylint: disable=too-many-locals
"""
Test Notify and Notifee by ensuring that the proper events get
called at the proper time, and that the stream passed into
opened_stream is correct
Note: Listen event does not get hit because MyNotifee is passed
into network after network has already started listening
TODO: Add tests to ensure conn is the correct connection
TODO: Add tests for closed_stream disconnected, listen_close as those
features are implemented in network
passed into connected
"""
class MyNotifee(INotifee):
# pylint: disable=too-many-instance-attributes, cell-var-from-loop
def __init__(self, events, val_to_append_to_event):
self.events = events
self.val_to_append_to_event = val_to_append_to_event
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async def opened_stream(self, network, stream):
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self.events.append(["opened_stream" + \
self.val_to_append_to_event, stream])
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async def closed_stream(self, network, stream):
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pass
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async def connected(self, network, conn):
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self.events.append("connected" + self.val_to_append_to_event)
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async def disconnected(self, network, conn):
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pass
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async def listen(self, network, multiaddr):
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pass
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async def listen_close(self, network, multiaddr):
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pass
@pytest.mark.asyncio
async def test_one_notifier():
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
response = "ack:" + read_string
await stream.write(response.encode())
node_b.set_stream_handler("/echo/1.0.0", stream_handler)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
# Add notifee for node_a
events = []
node_a.get_network().notify(MyNotifee(events, "0"))
stream = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
# Ensure the connected and opened_stream events were hit in MyNotifee obj
# and that stream passed into opened_stream matches the stream created on
# node_a
assert events == ["connected0", ["opened_stream0", stream]]
messages = ["hello", "hello"]
for message in messages:
await stream.write(message.encode())
response = (await stream.read()).decode()
assert response == ("ack:" + message)
# Success, terminate pending tasks.
await cleanup()
@pytest.mark.asyncio
async def test_two_notifiers():
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
response = "ack:" + read_string
await stream.write(response.encode())
node_b.set_stream_handler("/echo/1.0.0", stream_handler)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
# Add notifee for node_a
events0 = []
node_a.get_network().notify(MyNotifee(events0, "0"))
events1 = []
node_a.get_network().notify(MyNotifee(events1, "1"))
stream = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
# Ensure the connected and opened_stream events were hit in both Notifee objs
# and that the stream passed into opened_stream matches the stream created on
# node_a
assert events0 == ["connected0", ["opened_stream0", stream]]
assert events1 == ["connected1", ["opened_stream1", stream]]
messages = ["hello", "hello"]
for message in messages:
await stream.write(message.encode())
response = (await stream.read()).decode()
assert response == ("ack:" + message)
# Success, terminate pending tasks.
await cleanup()
@pytest.mark.asyncio
async def test_ten_notifiers():
num_notifiers = 10
node_a = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
node_b = await new_node(transport_opt=["/ip4/127.0.0.1/tcp/0"])
async def stream_handler(stream):
while True:
read_string = (await stream.read()).decode()
response = "ack:" + read_string
await stream.write(response.encode())
node_b.set_stream_handler("/echo/1.0.0", stream_handler)
# Associate the peer with local ip address (see default parameters of Libp2p())
node_a.get_peerstore().add_addrs(node_b.get_id(), node_b.get_addrs(), 10)
# Add notifee for node_a
events_lst = []
for i in range(num_notifiers):
events_lst.append([])
node_a.get_network().notify(MyNotifee(events_lst[i], str(i)))
stream = await node_a.new_stream(node_b.get_id(), ["/echo/1.0.0"])
# Ensure the connected and opened_stream events were hit in both Notifee objs
# and that the stream passed into opened_stream matches the stream created on
# node_a
for i in range(num_notifiers):
assert events_lst[i] == ["connected" + str(i), \
["opened_stream" + str(i), stream]]
messages = ["hello", "hello"]
for message in messages:
await stream.write(message.encode())
response = (await stream.read()).decode()
assert response == ("ack:" + message)
# Success, terminate pending tasks.
await cleanup()