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Copy timestamps from source to FSP dest buffer 

Slice up to history's length worth of (latest) time stamps from source
series read at the start of the history init phase.
samplerd_service
Tyler Goodlet 2022-11-26 15:08:36 -05:00
parent a5bb33b0ff
commit d1b07c625f
2 changed files with 17 additions and 11 deletions
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25
piker/fsp/_engine.py
View File

@ -112,8 +112,9 @@ async def fsp_compute(
flume.rt_shm, flume.rt_shm,
) )
# Conduct a single iteration of fsp with historical bars input # HISTORY COMPUTE PHASE
# and get historical output # conduct a single iteration of fsp with historical bars input
# and get historical output, pack into
history_output: Union[ history_output: Union[
dict[str, np.ndarray], # multi-output case dict[str, np.ndarray], # multi-output case
np.ndarray, # single output case np.ndarray, # single output case
@ -130,7 +131,8 @@ async def fsp_compute(
# each respective field. # each respective field.
fields = getattr(dst.array.dtype, 'fields', None).copy() fields = getattr(dst.array.dtype, 'fields', None).copy()
fields.pop('index') fields.pop('index')
history: Optional[np.ndarray] = None # TODO: nptyping here! history_by_field: Optional[np.ndarray] = None
src_time = src.array['time']
if ( if (
fields and fields and
@ -146,7 +148,7 @@ async def fsp_compute(
if key in history_output: if key in history_output:
output = history_output[key] output = history_output[key]
if history is None: if history_by_field is None:
if output is None: if output is None:
length = len(src.array) length = len(src.array)
@ -156,7 +158,7 @@ async def fsp_compute(
# using the first output, determine # using the first output, determine
# the length of the struct-array that # the length of the struct-array that
# will be pushed to shm. # will be pushed to shm.
history = np.zeros( history_by_field = np.zeros(
length, length,
dtype=dst.array.dtype dtype=dst.array.dtype
) )
@ -164,7 +166,7 @@ async def fsp_compute(
if output is None: if output is None:
continue continue
history[key] = output history_by_field[key] = output
# single-key output stream # single-key output stream
else: else:
@ -173,11 +175,13 @@ async def fsp_compute(
f'`{func_name}` is a single output FSP and should yield an ' f'`{func_name}` is a single output FSP and should yield an '
'`np.ndarray` for history' '`np.ndarray` for history'
) )
history = np.zeros( history_by_field = np.zeros(
len(history_output), len(history_output),
dtype=dst.array.dtype dtype=dst.array.dtype
) )
history[func_name] = history_output history_by_field[func_name] = history_output
history_by_field['time'] = src_time[-len(history_by_field):]
# TODO: XXX: # TODO: XXX:
# THERE'S A BIG BUG HERE WITH THE `index` field since we're # THERE'S A BIG BUG HERE WITH THE `index` field since we're
@ -194,7 +198,10 @@ async def fsp_compute(
# TODO: can we use this `start` flag instead of the manual # TODO: can we use this `start` flag instead of the manual
# setting above? # setting above?
index = dst.push(history, start=first) index = dst.push(
history_by_field,
start=first,
)
profiler(f'{func_name} pushed history') profiler(f'{func_name} pushed history')
profiler.finish() profiler.finish()

3
piker/fsp/_volume.py
View File

@ -268,8 +268,7 @@ async def flow_rates(
'dark_dvlm_rate': None, 'dark_dvlm_rate': None,
} }
# TODO: 3.10 do ``anext()`` quote = await anext(source)
quote = await source.__anext__()
# ltr = 0 # ltr = 0
# lvr = 0 # lvr = 0