Adjust streaming ex to use memory channel
Tyler Goodlet
parent
78ddd33e3a
commit
fd4e126e1f
142
README.rst
142
README.rst
|
|
@ -343,99 +343,99 @@ and print the results to your screen:
|
|||
|
||||
.. code:: python
|
||||
|
||||
import time
|
||||
import trio
|
||||
import tractor
|
||||
import time
|
||||
import trio
|
||||
import tractor
|
||||
|
||||
|
||||
# this is the first 2 actors, streamer_1 and streamer_2
|
||||
async def stream_data(seed):
|
||||
for i in range(seed):
|
||||
yield i
|
||||
await trio.sleep(0) # trigger scheduler
|
||||
# this is the first 2 actors, streamer_1 and streamer_2
|
||||
async def stream_data(seed):
|
||||
for i in range(seed):
|
||||
yield i
|
||||
await trio.sleep(0) # trigger scheduler
|
||||
|
||||
|
||||
# this is the third actor; the aggregator
|
||||
async def aggregate(seed):
|
||||
"""Ensure that the two streams we receive match but only stream
|
||||
a single set of values to the parent.
|
||||
"""
|
||||
async with tractor.open_nursery() as nursery:
|
||||
portals = []
|
||||
for i in range(1, 3):
|
||||
# fork point
|
||||
portal = await nursery.start_actor(
|
||||
name=f'streamer_{i}',
|
||||
rpc_module_paths=[__name__],
|
||||
)
|
||||
# this is the third actor; the aggregator
|
||||
async def aggregate(seed):
|
||||
"""Ensure that the two streams we receive match but only stream
|
||||
a single set of values to the parent.
|
||||
"""
|
||||
async with tractor.open_nursery() as nursery:
|
||||
portals = []
|
||||
for i in range(1, 3):
|
||||
# fork point
|
||||
portal = await nursery.start_actor(
|
||||
name=f'streamer_{i}',
|
||||
rpc_module_paths=[__name__],
|
||||
)
|
||||
|
||||
portals.append(portal)
|
||||
portals.append(portal)
|
||||
|
||||
q = trio.Queue(500)
|
||||
send_chan, recv_chan = trio.open_memory_channel(500)
|
||||
|
||||
async def push_to_q(portal):
|
||||
async for value in await portal.run(
|
||||
__name__, 'stream_data', seed=seed
|
||||
):
|
||||
# leverage trio's built-in backpressure
|
||||
await q.put(value)
|
||||
async def push_to_q(portal):
|
||||
async for value in await portal.run(
|
||||
__name__, 'stream_data', seed=seed
|
||||
):
|
||||
# leverage trio's built-in backpressure
|
||||
await send_chan.send(value)
|
||||
|
||||
await q.put(None)
|
||||
print(f"FINISHED ITERATING {portal.channel.uid}")
|
||||
await send_chan.send(None)
|
||||
print(f"FINISHED ITERATING {portal.channel.uid}")
|
||||
|
||||
# spawn 2 trio tasks to collect streams and push to a local queue
|
||||
async with trio.open_nursery() as n:
|
||||
for portal in portals:
|
||||
n.start_soon(push_to_q, portal)
|
||||
# spawn 2 trio tasks to collect streams and push to a local queue
|
||||
async with trio.open_nursery() as n:
|
||||
for portal in portals:
|
||||
n.start_soon(push_to_q, portal)
|
||||
|
||||
unique_vals = set()
|
||||
async for value in q:
|
||||
if value not in unique_vals:
|
||||
unique_vals.add(value)
|
||||
# yield upwards to the spawning parent actor
|
||||
yield value
|
||||
unique_vals = set()
|
||||
async for value in recv_chan:
|
||||
if value not in unique_vals:
|
||||
unique_vals.add(value)
|
||||
# yield upwards to the spawning parent actor
|
||||
yield value
|
||||
|
||||
if value is None:
|
||||
break
|
||||
if value is None:
|
||||
break
|
||||
|
||||
assert value in unique_vals
|
||||
assert value in unique_vals
|
||||
|
||||
print("FINISHED ITERATING in aggregator")
|
||||
print("FINISHED ITERATING in aggregator")
|
||||
|
||||
await nursery.cancel()
|
||||
print("WAITING on `ActorNursery` to finish")
|
||||
print("AGGREGATOR COMPLETE!")
|
||||
await nursery.cancel()
|
||||
print("WAITING on `ActorNursery` to finish")
|
||||
print("AGGREGATOR COMPLETE!")
|
||||
|
||||
|
||||
# this is the main actor and *arbiter*
|
||||
async def main():
|
||||
# a nursery which spawns "actors"
|
||||
async with tractor.open_nursery() as nursery:
|
||||
# this is the main actor and *arbiter*
|
||||
async def main():
|
||||
# a nursery which spawns "actors"
|
||||
async with tractor.open_nursery() as nursery:
|
||||
|
||||
seed = int(1e3)
|
||||
import time
|
||||
pre_start = time.time()
|
||||
seed = int(1e3)
|
||||
import time
|
||||
pre_start = time.time()
|
||||
|
||||
portal = await nursery.run_in_actor(
|
||||
'aggregator',
|
||||
aggregate,
|
||||
seed=seed,
|
||||
)
|
||||
portal = await nursery.run_in_actor(
|
||||
'aggregator',
|
||||
aggregate,
|
||||
seed=seed,
|
||||
)
|
||||
|
||||
start = time.time()
|
||||
# the portal call returns exactly what you'd expect
|
||||
# as if the remote "aggregate" function was called locally
|
||||
result_stream = []
|
||||
async for value in await portal.result():
|
||||
result_stream.append(value)
|
||||
start = time.time()
|
||||
# the portal call returns exactly what you'd expect
|
||||
# as if the remote "aggregate" function was called locally
|
||||
result_stream = []
|
||||
async for value in await portal.result():
|
||||
result_stream.append(value)
|
||||
|
||||
print(f"STREAM TIME = {time.time() - start}")
|
||||
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
|
||||
assert result_stream == list(range(seed)) + [None]
|
||||
return result_stream
|
||||
print(f"STREAM TIME = {time.time() - start}")
|
||||
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
|
||||
assert result_stream == list(range(seed)) + [None]
|
||||
return result_stream
|
||||
|
||||
|
||||
final_stream = tractor.run(main, arbiter_addr=('127.0.0.1', 1616))
|
||||
final_stream = tractor.run(main, arbiter_addr=('127.0.0.1', 1616))
|
||||
|
||||
|
||||
Here there's four actors running in separate processes (using all the
|
||||
|
|
|
|||
Loading…
Reference in New Issue