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The idea here is tomake the bluesky scans look the same as det-config scans. Mona’s step-store (from “detnames -s”) contains a list of variables, which in both cases includes step_value, step_docstring ("metadata"). In the case of a bluesky scan it also includes the PV values. In the case of a config scan the configs themselves get updated on each step.
Sample Scan Script
Note that the step_docstring is json as per Mikhail's suggestion above.
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from psana import DataSource
import sys
# a config scan for epix
ds = DataSource(exp='ueddaq02',run=28)
myrun = next(ds.runs())
step_value = myrun.Detector('step_value')
step_docstring = myrun.Detector('step_docstring')
for nstep,step in enumerate(myrun.steps()):
print('step:',nstep,step_value(step),step_docstring(step))
for nevt,evt in enumerate(step.events()):
if nevt==3: print('evt3:',nstep,step_value(evt),step_docstring(evt)) |
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