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Replace examples with ..literalinclude directives 

This should address both #98 and #108 by using our now tested examples
scripts directly in the documentation (so we know they must work or CI
will fail).

Resolves #98 #108
init_sphinx_docs
Tyler Goodlet 2020-02-10 00:20:32 -05:00
parent 5d2fd0eb05
commit 66b803780f
1 changed files with 5 additions and 217 deletions
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docs/index.rst
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@ -108,49 +108,7 @@ A trynamic first scene
Let's direct a couple *actors* and have them run their lines for
the hip new film we're shooting:
.. code:: python
import tractor
_this_module = __name__
the_line = 'Hi my name is {}'
async def hi():
return the_line.format(tractor.current_actor().name)
async def say_hello(other_actor):
async with tractor.wait_for_actor(other_actor) as portal:
return await portal.run(_this_module, 'hi')
async def main():
"""Main tractor entry point, the "master" process (for now
acts as the "director").
"""
async with tractor.open_nursery() as n:
print("Alright... Action!")
donny = await n.run_in_actor(
'donny',
say_hello,
# arguments are always named
other_actor='gretchen',
)
gretchen = await n.run_in_actor(
'gretchen',
say_hello,
other_actor='donny',
)
print(await gretchen.result())
print(await donny.result())
print("CUTTTT CUUTT CUT!!! Donny!! You're supposed to say...")
if __name__ == '__main__':
tractor.run(main)
.. literalinclude:: ../examples/a_trynamic_first_scene.py
We spawn two *actors*, *donny* and *gretchen*.
Each actor starts up and executes their *main task* defined by an
@ -174,31 +132,7 @@ spawned by the same nursery to be cancelled_.
To spawn an actor and run a function in it, open a *nursery block*
and use the ``run_in_actor()`` method:
.. code:: python
import tractor
def cellar_door():
return "Dang that's beautiful"
async def main():
"""The main ``tractor`` routine.
"""
async with tractor.open_nursery() as n:
portal = await n.run_in_actor('some_linguist', cellar_door)
# The ``async with`` will unblock here since the 'some_linguist'
# actor has completed its main task ``cellar_door``.
print(await portal.result())
if __name__ == '__main__':
tractor.run(main)
.. literalinclude:: ../examples/actor_spawning_and_causality.py
What's going on?
@ -388,41 +322,7 @@ you can ``async for`` to receive each value on the calling side.
As an example here's a parent actor that streams for 1 second from a
spawned subactor:
.. code:: python
from itertools import repeat
import trio
import tractor
async def stream_forever():
for i in repeat("I can see these little future bubble things"):
# each yielded value is sent over the ``Channel`` to the
# parent actor
yield i
await trio.sleep(0.01)
async def main():
# stream for at most 1 seconds
with trio.move_on_after(1) as cancel_scope:
async with tractor.open_nursery() as n:
portal = await n.start_actor(
f'donny',
rpc_module_paths=[__name__],
)
# this async for loop streams values from the above
# async generator running in a separate process
async for letter in await portal.run(__name__, 'stream_forever'):
print(letter)
# we support trio's cancellation system
assert cancel_scope.cancelled_caught
assert n.cancelled
tractor.run(main)
.. literalinclude:: ../examples/asynchronous_generators.py
By default async generator functions are treated as inter-actor
*streams* when invoked via a portal (how else could you really interface
@ -513,104 +413,7 @@ You also want to aggregate these feeds, do some processing on them and then
deliver the final result stream to a client (or in this case parent) actor
and print the results to your screen:
.. code:: python
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 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)
send_chan, recv_chan = trio.open_memory_channel(500)
async def push_to_chan(portal, send_chan):
async with send_chan:
async for value in await portal.run(
__name__, 'stream_data', seed=seed
):
# leverage trio's built-in backpressure
await send_chan.send(value)
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_chan, portal, send_chan.clone())
# close this local task's reference to send side
await send_chan.aclose()
unique_vals = set()
async with recv_chan:
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
assert value in unique_vals
print("FINISHED ITERATING in aggregator")
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:
seed = int(1e3)
import time
pre_start = time.time()
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)
print(f"STREAM TIME = {time.time() - start}")
print(f"STREAM + SPAWN TIME = {time.time() - pre_start}")
assert result_stream == list(range(seed))
return result_stream
final_stream = tractor.run(main, arbiter_addr=('127.0.0.1', 1616))
.. literalinclude:: ../examples/full_fledged_streaming_service.py
Here there's four actors running in separate processes (using all the
cores on you machine). Two are streaming by *yielding* values from the
@ -672,22 +475,7 @@ now it does the trick.
To find the arbiter from the current actor use the ``get_arbiter()`` function and to
find an actor's socket address by name use the ``find_actor()`` function:
.. code:: python
import tractor
async def main(service_name):
async with tractor.get_arbiter() as portal:
print(f"Arbiter is listening on {portal.channel}")
async with tractor.find_actor(service_name) as sockaddr:
print(f"my_service is found at {my_service}")
tractor.run(main, 'some_actor_name')
.. literalinclude:: ../examples/service_discovery.py
The ``name`` value you should pass to ``find_actor()`` is the one you passed as the
*first* argument to either ``tractor.run()`` or ``ActorNursery.start_actor()``.