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tractor
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Verify subs topics at each step

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Tyler Goodlet 2019-01-23 22:35:04 -05:00
parent 7675b01722
commit 2b1e8773bb
2 changed files with 67 additions and 16 deletions
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1
tests/test_local.py
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@ -7,7 +7,6 @@ import pytest
import trio
import tractor
from conftest import tractor_test

82
tests/test_pubsub.py
View File

@ -1,3 +1,4 @@
import time
from functools import partial
from itertools import cycle
@ -14,13 +15,18 @@ def is_even(i):
@tractor.msg.pub
async def pubber(get_topics):
ss = tractor.current_actor().statespace
for i in cycle(range(10)):
topics = get_topics()
# ensure topic subscriptions are as expected
ss['get_topics'] = get_topics
yield {'even' if is_even(i) else 'odd': i}
await trio.sleep(0.1)
async def subs(which):
async def subs(which, pub_actor_name):
if len(which) == 1:
if which[0] == 'even':
pred = is_even
@ -29,7 +35,7 @@ async def subs(which):
else:
pred = lambda i: isinstance(i, int)
async with tractor.find_actor('streamer') as portal:
async with tractor.find_actor(pub_actor_name) as portal:
agen = await portal.run(__name__, 'pubber', topics=which)
async with aclosing(agen) as agen:
async for pkt in agen:
@ -37,25 +43,60 @@ async def subs(which):
assert pred(value)
@pytest.mark.parametrize(
'pub_actor',
['streamer', 'arbiter']
)
def test_pubsub_multi_actor_subs(
loglevel,
arb_addr,
pub_actor,
):
"""Try out the neato @pub decorator system.
"""
async def main():
async with tractor.open_nursery() as n:
# start the publisher as a daemon
master_portal = await n.start_actor(
'streamer',
rpc_module_paths=[__name__],
)
ss = tractor.current_actor().statespace
even_portal = await n.run_in_actor('evens', subs, which=['even'])
odd_portal = await n.run_in_actor('odds', subs, which=['odd'])
async with tractor.open_nursery() as n:
name = 'arbiter'
if pub_actor is 'streamer':
# start the publisher as a daemon
master_portal = await n.start_actor(
'streamer',
rpc_module_paths=[__name__],
)
even_portal = await n.run_in_actor(
'evens', subs, which=['even'], pub_actor_name=name)
odd_portal = await n.run_in_actor(
'odds', subs, which=['odd'], pub_actor_name=name)
async with tractor.wait_for_actor('evens'):
# block until 2nd actor is initialized
pass
if pub_actor is 'arbiter':
# wait for publisher task to be spawned in a local RPC task
while not ss.get('get_topics'):
await trio.sleep(0.1)
get_topics = ss.get('get_topics')
assert 'even' in get_topics()
async with tractor.wait_for_actor('odds'):
# block until 2nd actor is initialized
pass
if pub_actor is 'arbiter':
start = time.time()
while 'odd' not in get_topics():
await trio.sleep(0.1)
if time.time() - start > 1:
pytest.fail("odds subscription never arrived?")
# TODO: how to make this work when the arbiter gets
# a portal to itself? Currently this causes a hang
# when the channel server is torn down due to a lingering
@ -67,12 +108,23 @@ def test_pubsub_multi_actor_subs(
# blocking due to actor never terminating loop
# await even_portal.result()
await trio.sleep(1)
await trio.sleep(0.5)
await even_portal.cancel_actor()
await trio.sleep(1)
await odd_portal.cancel_actor()
await trio.sleep(0.5)
await master_portal.cancel_actor()
if pub_actor is 'arbiter':
assert 'even' not in get_topics()
await odd_portal.cancel_actor()
await trio.sleep(1)
if pub_actor is 'arbiter':
while get_topics():
await trio.sleep(0.1)
if time.time() - start > 1:
pytest.fail("odds subscription never dropped?")
else:
await master_portal.cancel_actor()
tractor.run(
main,