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Support injecting a `info: dict` to `Sampler.broadcast_all()` calls

basic_buy_bot
Tyler Goodlet 2023-06-06 17:29:03 -04:00
parent f1252983e4
commit 7a5c43d01a
1 changed files with 30 additions and 9 deletions
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39
piker/data/_sampling.py
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@ -230,6 +230,7 @@ class Sampler:
self, self,
period_s: float, period_s: float,
time_stamp: float | None = None, time_stamp: float | None = None,
info: dict | None = None,
) -> None: ) -> None:
''' '''
@ -258,10 +259,14 @@ class Sampler:
try: try:
for stream in (subs - sent): for stream in (subs - sent):
try: try:
await stream.send({ msg = {
'index': time_stamp or last_ts, 'index': time_stamp or last_ts,
'period': period_s, 'period': period_s,
}) }
if info:
msg.update(info)
await stream.send(msg)
sent.add(stream) sent.add(stream)
except ( except (
@ -287,9 +292,15 @@ class Sampler:
) )
@classmethod @classmethod
async def broadcast_all(self) -> None: async def broadcast_all(
self,
info: dict | None = None,
) -> None:
for period_s in self.subscribers: for period_s in self.subscribers:
await self.broadcast(period_s) await self.broadcast(
period_s,
info=info,
)
@tractor.context @tractor.context
@ -359,8 +370,10 @@ async def register_with_sampler(
# except broadcast requests from the subscriber # except broadcast requests from the subscriber
async for msg in stream: async for msg in stream:
if msg == 'broadcast_all': if 'broadcast_all' in msg:
await Sampler.broadcast_all() await Sampler.broadcast_all(
info=msg['broadcast_all'],
)
finally: finally:
if ( if (
sub_for_broadcasts sub_for_broadcasts
@ -468,6 +481,8 @@ async def open_sample_stream(
cache_key: str | None = None, cache_key: str | None = None,
allow_new_sampler: bool = True, allow_new_sampler: bool = True,
ensure_is_active: bool = False,
) -> AsyncIterator[dict[str, float]]: ) -> AsyncIterator[dict[str, float]]:
''' '''
Subscribe to OHLC sampling "step" events: when the time aggregation Subscribe to OHLC sampling "step" events: when the time aggregation
@ -510,12 +525,18 @@ async def open_sample_stream(
}, },
) as (ctx, first) ) as (ctx, first)
): ):
assert len(first) > 1 if ensure_is_active:
assert len(first) > 1
async with ( async with (
ctx.open_stream() as istream, ctx.open_stream() as istream,
# TODO: we don't need this task-bcasting right? # TODO: we DO need this task-bcasting so that
# istream.subscribe() as istream, # for eg. the history chart update loop eventually
# receceives all backfilling event msgs such that
# the underlying graphics format arrays are
# re-allocated until all history is loaded!
istream.subscribe() as istream,
): ):
yield istream yield istream